2019年第2期Ei收录情况
发布人:liuy 发布时间:7/11/2019 10:18:27 AM  浏览次数:743次
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经检索,本刊2019年第2期所发文章均被Ei收录,具体如下:

1.
Title: Synthesis and Theoretical Calculation of Properties for 7H-Trifurazano [3,4-b:3',4'-f:3",4"-d]azepine and Its Novel Energetic Derivatives
Accession number: 20191906870146
Title of translation: 7H-三呋咱并[3,4-b:3',4'-f:3",4"-d]氮杂环庚三烯及新型含能衍生物合成及性能的理论计算
Authors: Duan, Bing-Hui1 ; Liu, Ning1 ; Wang, Bo-Zhou1; Lu, Xian-Ming1; Mo, Hong-Chang1; Xu, Ming-Hui1; Shu, Yuan-Jie1
Author affiliation: 1 Xi'an Modern Chemistry Research Institute, Xi'an; 710065, China
Corresponding author: Liu, Ning (flackliu@sina.com)
Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title: Huozhayao Xuebao
Volume: 42
Issue: 2
Issue date: April 1, 2019
Publication year: 2019
Pages: 114-119
Language: Chinese
ISSN: 10077812
CODEN: HUXUFP
Document type: Journal article (JA)
Publisher: China Ordnance Industry Corporation
Abstract: 7H-Trifurazano[3,4-b:3',4'-f:3",4"-d]azepine (HTFAZ) was synthesized via the reactions of nucleophilic substitution, cyclization and reduction using 3,4-bis(3'-nitrofurazano-4'-yl)furoxan (DNTF) as starting material. Based on the reactivity of HTFAZ, the two novel energetic compounds 7-(2,4,6-trinitrophenyl)-trifurazano[3,4-b:3',4'-f:3",4"-d]azepine (compound 1) and 7-(2,4,6-trinitro-3,5-diaminophenyl)-trifurazano[3,4-b:3',4'-f:3",4"-d]azepine (compound 2) were self-designed and synthesized. The structures of the target compounds were characterized by IR, 1H NMR, 13C NMR and elemental analysis. The thermal behaviors of compounds 1 and compound 2 were investigated by DSC and the detonation performances of the two compounds were predicted by Kamlet-Jacobs equations. The results show that the yield of HTFAZ reaches 63.2% after improving synthetic route. The thermal decomposition temperatures of compound 1 and compound 2 are 371.7℃ and 296.3℃, respectively, showing good thermal stability. The density of compound 1 is 1.90g/cm3, the peak temperature of thermal decomposition is 371.7℃, the theoretical detonation velocity is 8033m/s and theoretical detonation pressure is 30.11GPa, The detonation performance of compound 1 is better than that of TNT, and the density and thermal stability are greater than those of TNT and RDX.
2019, Editorial Board of Journal of Explosives & Propellants. All right

reserved.
Number of references: 20
Main heading: Detonation
Controlled terms: Decomposition - Thermodynamic stability - Thermolysis
Uncontrolled terms: 7H-trifurazano[3,4-b:3',4'-f:3,4-d]azepine (HTFAZ) -

Detonation performance - Detonation velocity - Furoxan - Nucleophilic

substitutions - Organic Chemistry - Theoretical calculations - Thermal

decomposition temperature
Classification code: 641.1Thermodynamics - 802.2Chemical Reactions
Numerical data indexing: Mass_Density 1.90e+03kg/m3, Percentage 6.32e+01%,

Pressure 3.01e+10Pa, Velocity 8.03e+03m/s
DOI: 10.14077/j.issn.1007-7812.2019.02.002
Database: Compendex Compilation and indexing terms, 2019 Elsevier Inc.



2.
Title: Experimental Study on Response and Protection of Charge with Shell under High Velocity Fragment Impact
Accession number: 20191906870158
Title of translation: 高速破片撞击下带壳装药响应及防护的试验研究
Authors: Qu, Ke-Peng1 ; Zhao, Zhi-Jiang2; Shen, Fei1; Wang, Hui1; Xiao, Wei1; Li, Liang-Liang1; Zhang, Fan1
Author affiliation: 1 Xi'an Modern Chemistry Research Institute, Xi'an; 710065, China; 2 Army Equipment Department Aviation Military Representative Bureau, Beijing; 100036, China
Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title: Huozhayao Xuebao
Volume: 42
Issue: 2
Issue date: April 1, 2019
Publication year: 2019
Pages: 185-190
Language: Chinese
ISSN: 10077812
CODEN: HUXUFP
Document type: Journal article (JA)
Publisher: China Ordnance Industry Corporation
Abstract: The impact loading tests of shell charge with different guard plate thickness were carried out using the 25mm smoothbore cannon, the failure modes change and charge reaction state of fragment and guard plate under impacting the charge with shell by 18.6g standard fragment at 1820-1830m/s vilocity were obtained, the charge response degree were observed by high speed photography, and a protective structure that can reduce the reaction grade of the charge with shell was proposed. The results show that when the thickness of front guard plate is 10mm, the failure mode of the front guard plate is same diameter perforation with a diameter of 28mm, and the fragments penetrating the front guard plate form several large quality fragments. When the thickness of front guard plate increases to 16mm, the spalling layer with a diameter of 37mm is formed on the back of front guard plate and the fragments become dense small quality fragment groups. Compared with the charge combustion reaction caused by several large quality fragments, the dense small quality fragment

groups are more easily to form multiple hot spots in the charge interior, which will lead to more intense deflagration reaction of the charge. The composite protection structure can effectively reduce the energy of fragment groups and play a good role in protecting the charge.
2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references: 13
Main heading: High speed photography
Controlled terms: Combustion - Plates (structural components) - Shells (structures)
Uncontrolled terms: Charge with shell - Combustion reactions - Explosion mechanics - High velocity fragment - Plate thickness - Protection structure - Protective structures - Protective stucture
Classification code: 408.2Structural Members and Shapes - 742.1Photography
Numerical data indexing: Mass 1.86e-02kg, Size 1.00e-02m, Size 1.60e-02m, Size 2.50e-02m, Size 2.80e-02m, Size 3.70e-02m, Velocity 1.82e+03m/s to 1.83e+03m/s
DOI: 10.14077/j.issn.1007-7812.2019.02.014
Database: Compendex
Compilation and indexing terms, 2019 Elsevier Inc.


3.
Title: Influence of Structural Parameters of Built-in Sensitive Devices on EFP Forming of Eccentric Liner
Accession number: 20191906870162
Title of translation: 内置敏感器件的结构参数对偏心罩EFP成型的影响
Authors: Luo, Jian-Hua1 ; Zhang, Gen-Sheng2; Bo, Xue-Gang3; Liu, Rong-Zhong1; Guo, Rui1 ; Xing, Bo-Yang1
Author affiliation: 1 School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing; 210094, China  2 Shanxi Hanyang Chemical Co., Ltd., Taiyuan; 030051, China
3 Jiangsu Yongfeng Machinery Co., Ltd., Huai'an; Jiangsu; 223001, China;
Corresponding author: Guo, Rui (guoruid@163.com)
Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title: Huozhayao Xuebao
Volume: 42
Issue: 2
Issue date: April 1, 2019
Publication year: 2019
Pages: 207-212
Language: Chinese
ISSN: 10077812
CODEN: HUXUFP
Document type: Journal article (JA)
Publisher: China Ordnance Industry Corporation
Abstract: To improving the penetration capability of EFP, the influence rule of structural parameters of built-in sensitive devices on EFP molding was studied by using AUTUDYN numerical calculation software, and the reliability of the calculation model was tested by the typical terminal sensitive projectile EFP warhead penetration target test. The results show that when the height of the sensitive device increases from 0.15 times the charge height to 0.50 times, the formed EFP speed increases by 1.29%, the aspect ratio decreases by 30.9%, and when the diameter of the sensor increases from 0.3 times the diameter of the charge to 0.8 times the diameter of the charge, the formed EFP speed reduces by 5.14%, and the aspect ratio decreases by 17.5%. When the distance from the starting point of the sensitive device increases from 0.1 times the charge height to 0.55 times, the speed and aspect ratio of the EFP after molding decreases first and then increases, and the low value appears at 0.35 time the charge height. For the stepped sensitive device, when the diameter ratio of the sensitive device increases from 0.4 to 1.0, the EFP speed decreases by 3.2%, and the aspect ratio increases by 39.1%. When the height ratio of sensor increases from 0.4 to 1.0, the EFP speed reduces by 4.2% and the aspect ratio increases by 38.4%.
2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references: 10
Main heading: Aspect ratio
Controlled terms: Molding - Projectiles - Software reliability - Software

testing - Speed
Uncontrolled terms: Eccentric liner - Explosion mechanics - Numerical

calculation - Sensitive devices - Terminal-sensitive projectiles
Classification code: 723.5Computer Applications
Numerical data indexing: Percentage 1.29e+00%, Percentage 1.75e+01%,

Percentage 3.09e+01%, Percentage 3.20e+00%, Percentage 3.84e+01%, Percentage

3.91e+01%, Percentage 4.20e+00%, Percentage 5.14e+00%
DOI: 10.14077/j.issn.1007-7812.2019.02.018
Database: Compendex
Compilation and indexing terms, 2019 Elsevier Inc.


4.
Title: Effect of Bismuth on Hydrolysis Properties of Aluminum-based Hydro-reactive Metal Materials
Accession number: 20191906870149
Title of translation: 金属铋对铝基水反应材料水解性能的影响
Authors: Huang, Hai-Tao1 ; Wang, Chuan-Hua2; Xie, Wu-Xi1; Zhao, Yu1; Bao, Yuan-Peng1
Author affiliation: 1 Xi'an Modern Chemistry Research Institute, Xi'an; 710065, China; 2 School of Materials Science and Engineering, Beijing Institute of Technology, Beijing; 100081, China
Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title: Huozhayao Xuebao
Volume: 42
Issue: 2
Issue date: April 1, 2019
Publication year: 2019
Pages: 131-134
Language: English
ISSN: 10077812
CODEN: HUXUFP
Document type: Journal article (JA)
Publisher: China Ordnance Industry Corporation
Abstract: The Al-Bi composites were prepared by high-energy ball milling method, and the effect of bismuth content on the conversion rate of hydro-reactive materials was studied. The effects of Al/water mass ratio and the initial reaction water temperature on the hydrolysis performance of Al-based hydro-reactive active materials were studied. The results show that bismuth content increases from 0 to 10%, hydrogen conversion of the composites increases from 5.4% to 71.2% first and then decreases to 62.4%,in which, the optimum mass fraction of bismuth is 5%. With the change of Al/water mass ratio from 1:40 to 1:100, the conversion of the composites is less affected, but the effect on the reaction rate is obvious. The hydrogen production rate is the highest of 114mL/(min?g) when mass ratio of Al/water is 1:60.The hydrogen generation rate and conversion yield of the composites increases with the

incurease of the initial temperature of seawater, and when the initial temperature of seawater increases from 20℃ to 80℃, the hydrogen conversion yield increases by 29.8%.
2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references: 19
Main heading: Hydrogen production
Controlled terms: Aluminum - Aluminum alloys - Ball milling - Binary alloys - Bismuth - Bismuth alloys - Hydrolysis - Mechanical alloying - Milling (machining) - Seawater
Uncontrolled terms: Applied chemistry - Conversion rates - High-energy ball milling - Hydro-reactive metals - Hydrogen generations - Hydrogen production rate - Initial temperatures - Reactive materials
Classification code: 471.4Seawater, Tides and Waves - 522Gas Fuels - 531Metallurgy and Metallography - 541.1Aluminum - 541.2Aluminum Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 604.2Machining Operations - 802.2Chemical Reactions - 802.3Chemical Operations
Numerical data indexing: Percentage 0.00e+00% to 1.00e+01%, Percentage 2.98e+01%, Percentage 5.00e+00%, Percentage 5.40e+00% to 7.12e+01%, Percentage 6.24e+01%
DOI: 10.14077/j.issn.1007-7812.2019.02.005
Database: Compendex
Compilation and indexing terms, 2019 Elsevier Inc.


5.
Title: Synthesis and Properties of Methylhydrazine Picrate
Accession number: 20191906870151
Title of translation: 甲基肼苦味酸盐的合成与性能
Authors: Mu, Xiao-Gang1 ; Zhang, Yue1; Zhang, You-Zhi1; Liu, Xiang-Xuan1
Author affiliation: 1 Rocket Force University of Engineering, Xi'an; 710025, China
Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title: Huozhayao Xuebao
Volume: 42
Issue: 2
Issue date: April 1, 2019
Publication year: 2019
Pages: 141-144
Language: Chinese
ISSN: 10077812
CODEN: HUXUFP
Document type: Journal article (JA)
Publisher: China Ordnance Industry Corporation
Abstract: Methyl hydrazine (MMH) picrate was synthesized by the reaction of picric acid with liquid propellant MMH. Its structure was characterized by elemental analysis, IR spectroscopy and NMR. Its thermal decomposition performance was analyzed by TG-DTG and DSC. The thermal decomposition of MMH picrate was studied and the activation energy of thermal decomposition was calculated by Kissinger method. The critical temperature of thermal explosion was calculated by the characteristic data of non-isothermal DSC curves. The results show that the thermal decomposition of MMH picrate mainly occurs between 170.8 and 225.3℃. Its decomposition process is exothermic reaction, the melting point is about 120℃, and the non-isothermal kinetic equation is ln(β/Tp2)=-15.393(1/Tp)+23.288. The activation energy E of thermal decomposition is 127.98kJ/mol, the pre-exponential factor in ln (A/s-1) is

26.04. The critical temperature of thermal explosion Tb is 171.33℃. MMH picrate has the characteristics of simple synthesis process, rapid reaction and good thermal stability, which can be used for the waste treatment and reuse of MMH.
2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references: 14
Main heading: Decomposition
Controlled terms: Activation energy - Hydrazine - Integral equations - Isotherms - Liquid propellants - Temperature - Thermolysis - Waste treatment
Uncontrolled terms: Methyl hydrazine picrate - Organic Chemistry - Picric acid - Thermal decomposition kinetics - Thermal explosion
Classification code: 452.4Industrial Wastes Treatment and Disposal - 523Liquid Fuels - 641.1Thermodynamics - 802.2Chemical Reactions - 804.2Inorganic Compounds - 921.2Calculus
DOI: 10.14077/j.issn.1007-7812.2019.02.007
Database: Compendex
Compilation and indexing terms, 2019 Elsevier Inc.


6.
Title: Recent Progress in Foreign Nano-thermite
Accession number: 20191906870145
Title of translation: 国外纳米铝热剂的最新研究进展
Authors: Ren, Xiao-Xue1 ; Peng, Cui-Zhi1; Qin, Jian1; Zheng, Bin1
Author affiliation: 1 North Institute for Scientific and Technical Information, Beijing; 100089, China
Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title: Huozhayao Xuebao
Volume: 42
Issue: 2
Issue date: April 1, 2019
Publication year: 2019
Pages: 107-113
Language: Chinese
ISSN: 10077812
CODEN: HUXUFP
Document type: Journal article (JA)
Publisher: China Ordnance Industry Corporation
Abstract: To accelerate the research progress of nano-thermite technology in China and grasp the latest development trend and application of nano-thermite technology abroad in time, on the basis of systematically tracking the latest development trends abroad, the preparation and application technology of nano-thermite, the research on the mixture of new nano-thermite and the latest research progress on its reaction performance in the United States, France and other countries were summarized. The preparation technology includes solid

phase reaction method, sol-gel method, combustion synthesis method, biosynthesis method and low energy consumption amplification production method. It shows that after 20 years of research, nano-thermite has shifted from laboratory research to preproduction stage. It indicates that the special excellent properties of nano-thermite will make it become the  development goal of high-performance energetic materials. The application of nano-thermite in propellant and explosive will make the propellant have higher burning rate, smaller ammunition, more advanced fuel and additive components, and it is expected to be an important way to improve the safety of propellants and explosives, thus meeting the higher requirements for energetic materials in the future.
2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references: 38
Main heading: Explosives
Controlled terms: Biochemistry - Combustion synthesis - Energy utilization - Fuel additives - Iron oxides - Propellants - Sol-gel process - Sol-gels -Synthesis (chemical)
Uncontrolled terms: Application technologies - Applied chemistry - Combustion synthesis method - Low energy consumption - Nano-alminum - Preparation technology - Solid phase reaction - Thermites
Classification code: 525.3Energy Utilization - 801.2Biochemistry - 802.2Chemical Reactions - 802.3Chemical Operations - 803Chemical Agents and Basic Industrial Chemicals - 804Chemical Products Generally - 804.2Inorganic

Compounds - 812.3Glass
Numerical data indexing: Age 2.00e+01yr
DOI: 10.14077/j.issn.1007-7812.2019.02.001
Database: Compendex
Compilation and indexing terms, 2019 Elsevier Inc.


7.
Title: Assessment Method of Sympathetic Detonation of Explosives Using Continuous Pressure-conducted Velocity Probe
Accession number: 20191906870159
Title of translation: 炸药殉爆的连续压导速度探针判定方法
Authors: Li, Ke-Bin1 ; Li, Xiao-Jie1, 2 ; Wang, Xiao-Hong1; Cao, Jing-Xiang3; Yan, Hong-Hao1; Chen, Xiang1
Author affiliation: 1 Department of Engineering Mechanics, Dalian University of Technology, Dalian; Liaoning; 116024, China;2 State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian; Liaoning; 116024, China;3 Dalian Shipbuilding Industry Explosive Processing Research Co., Ltd., Dalian; Liaoning; 116311, China
Corresponding author: Li, Xiao-Jie (robinli@dlut.edu.cn)
Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants
Abbreviated source title: Huozhayao Xuebao
Volume: 42
Issue: 2
Issue date: April 1, 2019
Publication year: 2019
Pages: 191-196
Language: Chinese
ISSN: 10077812
CODEN: HUXUFP
Document type: Journal article (JA)
Publisher: China Ordnance Industry Corporation
Abstract: To assess the sympathetic detonation of explosives more reliably and more intuitively, a testing method for quantitative determination of sympathetic detonation of explosives was designed based on a self-developed continuous velocity probe. Using this method, measurements for mixed charge with different mass ratio of RDX/ANFO were performed and three possible results of test curves were given as the basis for determining the sympathetic detonation. A series of repeated experiments were carried out for the mixed charge of RDX /ANFO (mass ratio of 50%/50%), whose sympathetic detonation distance was determined and the detonation velocities of donor charge and acceptor charge were fitted. The results show that when the total distance of detonation-shock wave is equal to the total length of the donor charge, acceptor charges and the air gap, it means that the acceptor charge is initiated, while the total distance is less than the total length, it means that the acceptor charge is not initiated. The transmission distances are less than 20mm when the mass fraction of RDX is 0 and 15%, while equals to 220mm if the mass fraction of RDX is 50%. The maximal gap distance of air shock wave recorded by continuous pressure-conducted probe is 60mm. The detonation

velocities of initiated acceptor charge are basically equal to the values of donor charge, whose difference between them is between 0.02% and 4.4%. Indicating that the continuous pressure-conducted probe method can assess the sympathetic detonation of explosives reliably and quantitativly.
2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.
Number of references: 13
Main heading: Detonation
Controlled terms: Probes - Shock waves - Testing - Velocity
Uncontrolled terms: Air shock waves - Detonation shock waves - Detonation velocity - Explosion mechanics - Quantitative determinations - Sympathetic detonations - Total distances - Transmission distances
Classification code: 931Classical Physics; Quantum Theory; Relativity
Numerical data indexing: Percentage 0.00e+00%, Percentage 1.50e+01%,

Percentage 2.00e-02% to 4.40e+00%, Percentage 5.00e+01%, Size 2.00e-02m, Size 2.20e-01m, Size 6.00e-02m
DOI: 10.14077/j.issn.1007-7812.2019.02.015
Database: Compendex
Compilation and indexing terms, 2019 Elsevier Inc.

8.

Title: Experimental Research and Numerical Simulation on the Burning Rate of HNIW/GAP Mixture

Accession number: 20191906870153

Title of translation: HNIW/GAP混合物燃速的实验研究与数值模拟

Authors: Li, Heng1 ; Zhao, Feng-Qi1 ; Pei, Qing1; Li, Meng1; Xu, Si-Yu1; Yao, Er-Gang1; Jiang, Han-Yu1; Hao, Hai-Xia1; Ma, Xiao-Xun2

Author affiliation: 1 Science and Technology on Combustion and Explosion Laboratory, Xi'an Modern Chemistry Research Institute, Xi'an; 710065, China 2 College of Chemical Engineering, Northwest University, Xi'an; 710069, China

Corresponding author: Zhao, Feng-Qi (zhaofqi@163.com)

Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

Abbreviated source title: Huozhayao Xuebao

Volume: 42

Issue: 2

Issue date: April 1, 2019

Publication year: 2019

Pages: 152-159

Language: Chinese

ISSN: 10077812

CODEN: HUXUFP

Document type: Journal article (JA)

Publisher: China Ordnance Industry Corporation

Abstract: HNIW/GAP binary mixture was prepared. Its static burning rate was measured in the pressure range of 6-15MPa. The effects of HNIW content and pressure on the burning rate of mixture were investigated. The influence rule of HNIW particle size and preheated layer thickness on the burning rate of HNIW/GAP mixture was analyzed. The burning rate was simulated based on Relay-Race model. The mechanism of controlling burning rate was analyzed and the thermal analysis study of HNIW/GAP mixture was performed by DSC. The results show that the Relay-Race model can predict the partial burning rate of HNIW at low HNIW content. The burning rate of the mixture increases with increasing the HNIW content at 6-9MPa. The burning rate of the mixture decreases firstly and then increases with increasing the HNIW content at 12-15MPa. When the pressure is lower than about 0.2MPa, the particle of HNIW with the particle size of 62μm is lower than preheated layer thickness and does not undergo self-sustained combustion and the combustion of mixture can be promoted by increasing the particle size of HNIW. The simulated amplitude of mixture burning rate decreases with the increase of HNIW particle size under the condition of mass ratio of HNIW/GAP as 1:1. The reaction controlling zone of mixture combustion process transfers from GAP combustion zone to that of HNIW with the HNIW mass ratio changing from 0 to 30%, which results in the change of burning rate.

2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

Number of references: 27

Main heading: Particle size analysis

Controlled terms: Binary mixtures - Combustion - Particle size - Physical chemistry - Thermoanalysis

Uncontrolled terms: Combustion mechanism - Combustion process - Combustion zones - Experimental research - HNIW - Layer thickness - Pressure ranges - Sustained combustion

Classification code: 801Chemistry - 801.4Physical Chemistry - 804Chemical Products Generally - 951Materials Science

Numerical data indexing: Percentage 0.00e+00% to 3.00e+01%, Pressure 1.20e+07Pa to 1.50e+07Pa, Pressure 2.00e+05Pa, Pressure 6.00e+06Pa to 1.50e+07Pa, Pressure 6.00e+06Pa to 9.00e+06Pa, Size 6.20e-05m

DOI: 10.14077/j.issn.1007-7812.2019.02.009

Database: Compendex

Compilation and indexing terms,2019 Elsevier Inc.


9.

Title: Effect of Spherical Nitroguanidine Particle Size on Thermal Stability and Mechanical Properties of Modified Single-base Gun Propellant

Accession number: 20191906870157

Title of translation: 球形硝基胍粒径对改性单基发射药热安定性和力学性能的影响

Authors: Han, Jin-Chao1 ; Yang, Hui-Qun1, 2; Wang, Yong-Qiang1

Author affiliation: 1 School of Environment and Safety Engineering, North University of China, Taiyuan; 030051, China2 Fundamental Science on Underground Target Damage Technology Laboratory, North University of China, Taiyuan; 030051, China

Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

Abbreviated source title: Huozhayao Xuebao

Volume: 42

Issue: 2

Issue date: April 1, 2019

Publication year: 2019

Pages: 180-184

Language: Chinese

ISSN: 10077812

CODEN: HUXUFP

Document type: Journal article (JA)

Publisher: China Ordnance Industry Corporation

Abstract: To improve the stability and mechanical properties of modified single-base gun propellant, three kinds of modified single-base gun propellants with different particle sizes (50,80 and 110 μm) were prepared. Their thermal decomposition process and thermal stability were studied by differential scanning calorimetry, vacuum stability test and methyl violet test and their impact strength and compression strength were tested. The effects of particle size change of nitroguanidine(NQ) on the thermal behavior and mechanical properties of modified single-base gun propellants were analyzed. The results show that the three kinds of modified single-base gun

propellant samples with spherical NQ have two thermal decomposition processes.The first decomposition process corresponds to the decomposition of mixed nitrocellulose, and the second decomposition process is the decomposition of RDX and NQ, but the second decomposition process is not obvious. With increasing the particle size of NQ from 50μm to 110μm, the peak temperature of thermal decomposition of gun propellant samples increases from 178.44 to 179.71, the amount of gas evolved from the sample in vacuum stability test

decreases from 0.7558mL/g to 0.5964mL/g within 48h, the time for methyl violet test paper to turn orange increases from 44min to 54min, and no explosion occurs after heating for 5h, the impact strength of the gun propellant sample decreases from 4.23kJ/m to 3.81kJ/m, and the compressive strength decreases from 56.93MPa to 53.85MPa. Indicting that the increase of the particle size of spherical NQ is beneficial to improving the thermal stability of gun propellant, but it will decrease the mechanical properties of gun propellant.

2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

Number of references: 18

Main heading: Solid propellants

Controlled terms: Calorimeters - Compressive strength - Decomposition -Differential scanning calorimetry - Impact strength - Mechanical properties- Particle size - Physical chemistry - Spheres - Stability - Thermodynamic stability - Thermolysis

Uncontrolled terms: Compression strength - Decomposition process - Different particle sizes - Gun propellants - Nitroguanidine - Particle size change -Thermal decomposition process - Vacuum stability tests

Classification code: 524Solid Fuels - 641.1Thermodynamics - 801.4Physical Chemistry - 802.2Chemical Reactions - 804Chemical Products Generally -944.5Temperature Measuring Instruments - 944.6Temperature Measurements -951Materials Science

Numerical data indexing: Pressure 5.69e+07Pa to 5.38e+07Pa, Size 1.10e-04m,Size 5.00e-05m to 1.10e-04m, Specific_Volume 7.56e-04m3/kg to 5.96e-04m3/kg,Time 1.73e+05s, Time 1.80e+04s, Time 2.64e+03s to 3.24e+03s

DOI: 10.14077/j.issn.1007-7812.2019.02.013

Database: Compendex

Compilation and indexing terms,2019 Elsevier Inc.


10.

Title: Effects of TMETN Content and NC Nitrogen Content on the Mechanical Properties of TMETN/NG Mixed Nitrate Propellants

Accession number: 20191906870156

Title of translation: TMETN含量和NC含氮量对TMETN/NG混合硝酸酯发射药力学性能的影

Authors: Tian, Yu1 ; Wang, Ying-Bo1; He, Wei-Dong1; Dong, Jun2

Author affiliation: 1 School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing; 210094, China2 Luzhou North Chemical Industries Co., Ltd., Luzhou; Sichuan; 646605, China

Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

Abbreviated source title: Huozhayao Xuebao

Volume: 42

Issue: 2

Issue date: April 1, 2019

Publication year: 2019

Pages: 175-179

Language: Chinese

ISSN: 10077812

CODEN: HUXUFP

Document type: Journal article (JA)

Publisher: China Ordnance Industry Corporation

Abstract: To improve the mechanical properties of gun propellant, on the basis of formulation of nitramine propellant, two series of trimethylolethane trinitrate(TMETN)/NG mixed nitrate propellant samples were prepared by replacing part of NG with TMETN and changing the nitrogen content of NC. The impact strength and compressive strength of gun propellants at three different temperatures (-40, 20, and 50) were tested using an impact tester and a material testing machine. The combustion performance of gun propellant at high pressure (pm600MPa) was tested by a closed bomb. The results show that the low temperature impact strength of the gun propellant increases gradually with the increase of TMETN mass fraction(0, 5%, 10%, 15%, 20%) in the experimental range, and the opposite trend appears at high temperature and normal temperature, while the compressive strength shows an increasing trend at different temperatures. As the nitrogen content of NC increases from 12.2% to 13.0%, the impact strength and compressive strength of the gun propellant show a trend of slight increase at first and then gradually decrease at different temperatures. Under high pressure conditions, the p-t and L-B curves of the gun propellant samples are smooth under different temperature conditions, which was consistent with the normal burning law of tubular propellant, and no obvious fragmentation phenomenon occurs.

2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

Number of references: 10

Main heading: Impact strength

Controlled terms: Bombing - Compressive strength - Mechanical properties - Nitrates - Physical chemistry - Propellants - Temperature

Uncontrolled terms: Combustion performance - Gun propellants - High-pressure condition - Low-temperature impact strength - Nitramine propellant -Nitrogen content - Temperature conditions - Trimethylolethane trinitrate(TMETN)

Classification code: 404.1Military Engineering - 641.1Thermodynamics -801.4Physical Chemistry - 804.2Inorganic Compounds - 951Materials Science

Numerical data indexing: Percentage 1.00e+01%, Percentage 1.22e+01% to 1.30e+01%, Percentage 1.50e+01%, Percentage 2.00e+01%, Percentage 5.00e+00%

DOI: 10.14077/j.issn.1007-7812.2019.02.012

Database: Compendex

Compilation and indexing terms, 2019 Elsevier Inc.


11.

Title: Research on Creep Effect of Solid Propellant Grain under Vertical Storage

Accession number: 20191906870154

Title of translation: 固体推进剂药柱立式贮存的蠕变效应

Authors: Wang, Xin1 ; Gao, Ming2; Wu, Peng1; Chen, Si-Tong1; Wang, Yu-Feng1

Author affiliation: 1 Naval Aviation University, Yantai; Shandong; 264001, China2 Naval Material Department, Beijing; 100048, China

Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

Abbreviated source title: Huozhayao Xuebao

Volume: 42

Issue: 2

Issue date: April 1, 2019

Publication year: 2019

Pages: 160-168

Language: Chinese

ISSN: 10077812

CODEN: HUXUFP

Document type: Journal article (JA)

Publisher: China Ordnance Industry Corporation

Abstract: To study the creep effect of the solid propellant grains of vertical storage within long-term gravity load, creep tests of propellant specimens at different stress levels were carried out. Based on the experimental results, the creep constitutive equation at constant temperature and constant stress of propellant was fitted, and the verification was carried out with ABAQUS simulation results of dumbbell-shaped specimens. The simulation calculation and analysis of motor under combined loadings of curing cooling and gravity were carried out, and the motor's vertical storage damage of the key points and key paths was calculated. The results show that the feasibility of applying Norton constitutive equation to creep analysis of motor is verified by the test results. The simulation results show that the whole grain of motor has the tendency of sinking, the gaps of fore and aft artificial debonding layer is opened in different degrees. The opening near the fore artificial debonding layer is the biggest, and the opening near aft artificial debonding layer is the smallest. The direction of axial displacement points to the head,the biggest radial displacement of the grain occurs on the middle perforation. The stress of middle perforation is bigger than that of the other areas, the stress in cone section of the fore wing of the grain is the biggest, its creep damage is 0.49%. Simulation results are consistent with ones of dismantling motor under the real storage environment.

2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

Number of references: 20

Main heading: Creep

Controlled terms: Constitutive equations - Creep testing - Debonding -Physical chemistry - Solid propellants

Uncontrolled terms: ABAQUS simulations - Axial displacements - Constant temperature - Creep constitutive equations - Creep effects - Radial displacements - Simulation calculation - Solid propellant grains

Classification code: 524Solid Fuels - 801.4Physical Chemistry - 804Chemical Products Generally - 921Mathematics - 951Materials Science

Numerical data indexing: Percentage 4.90e-01%

DOI: 10.14077/j.issn.1007-7812.2019.02.010

Database: Compendex

Compilation and indexing terms, 2019 Elsevier Inc.


12.

Title: Analysis of Energy Characteristics of Zr/Al-based High-energy Solid Propellants

Accession number: 20191906870155

Title of translation: Zr/Al基高能固体推进剂的能量特性分析

Authors: Liu, Qing1 ; Chen, Lin-Quan1; Wang, Jian-Ru1; Zheng, Kai-Bin1; Xu,Tuan-Wei1

Author affiliation: 1 Xi'an Aerospace Solid Propulsion Technology Institute,Xi'an; 710025, China

Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

Abbreviated source title: Huozhayao Xuebao

Volume: 42

Issue: 2

Issue date: April 1, 2019

Publication year: 2019

Pages: 169-174

Language: Chinese

ISSN: 10077812

CODEN: HUXUFP

Document type: Journal article (JA)

Publisher: China Ordnance Industry Corporation

Abstract: To investigate the influence law of zirconium powder content on the energy characteristics of high-energy propellant, the analysis investigation of energy characteristics for Zr/Al-based propellant and Zr/Al-based azide high-energy propellant with different zirconium content was performed by thermodynamic calculation software CEA. By calculating the energy characteristics of the two propellants, such as combustion temperature, density, specific impulse and density specific impulse, the influence law of zirconium content on the energy characteristic parameters of the propellant was obtained, which was compared with ZrH2/Al-based high energy propellant.The results show that with the increase of Zr content, the combustion temperature and specific impulse of NEPE propellant decrease, but the density specific impulse continuously increases. Taking into account the energy characteristics of the propellant and the unstable combustion at high combustion temperature conditions, considering that the addition of Zr powder with mass fraction of 3%-5% in propellant is moderate. With the increase of Zr content, the combustion temperature and specific impulse of azide high-energy propellant show a trend of increasing first and then decreasing, and reach a maximum when the mass fraction of Zr powder is 6% and 3% respectively and the propellant density specific impulse continues to rise. Meantime, it was also found that the energy characteristics of the ZrH2/Al-based propellant is lower than that of the Zr/Al-based propellant.

2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

Number of references: 11

Main heading: Zirconium compounds

Controlled terms: Combustion - Physical chemistry - Solid propellants - Temperature

Uncontrolled terms: Combustion temperatures - Energy characteristics - High energy propellant - NEPE propellant - Thermodynamic calculations - Unstable combustions - Zirconium content - Zirconium powder

Classification code: 524Solid Fuels - 641.1Thermodynamics - 801.4Physical Chemistry - 804Chemical Products Generally

Numerical data indexing: Percentage 3.00e+00%, Percentage 3.00e+00% to 5.00e+00%, Percentage 6.00e+00%

DOI: 10.14077/j.issn.1007-7812.2019.02.011

Database: Compendex

Compilation and indexing terms,2019 Elsevier Inc.


13.

Title: Reactive Properties of Reactive Material under the Load of Drop-weight

Accession number: 20191906870160

Title of translation: 落锤加载下反应材料的反应性能

Authors: Chen, Peng1 ; Qu, Ke-Peng1; Chen, Rong2; Yuan, Bao-Hui1

Author affiliation: 1 Xi'an Modern Chemistry Research Institute, Xi'an;710065, China2 National University of Defense Technology, Changsha; 410073, China

Corresponding author: Yuan, Bao-Hui (ybhybh59@sina.com)

Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

Abbreviated source title: Huozhayao Xuebao

Volume: 42

Issue: 2

Issue date: April 1, 2019

Publication year: 2019

Pages: 197-201 and 206

Language: Chinese

ISSN: 10077812

CODEN: HUXUFP

Document type: Journal article (JA)

Publisher: China Ordnance Industry Corporation

Abstract: To investigate the reactive properties of reactive material under the load of drop-weight, the stress-time curves of material under different drop height loading of drop-weight were obtained by directly loading reactive material with a 10kg drop-weight. The stress-time curves were compared with the results of high-speed photographs, and the absorption energy of the unit mass of material during the reaction was analyzed and calculated. Based on the Johnson-Cook constitutive model of materials, the changes of mechanical properties during loading were calculated by using finite element calculation software LS-DYNA. The results show that under unconstrained loading with 10 kg drop-weight, the stress changes rapidly with time with increasing the drop-weight height, the material reacts at 1000μs, the corresponding critical stress is 218MPa, and the energy absorbed by the unit mass of material during the reaction is 40.9J/g. The simulation results are in agreement with the experimental ones and further verify the rationality of the Johnson-Cook's constitutive model of materials.

2019, Editorial Board of Journal of Explosives & Propellants. All right

reserved.

Number of references: 18

Main heading: Loading

Controlled terms: Constitutive models - Drops - Mechanical properties -Stress analysis

Uncontrolled terms: Absorption energies - Drop weight - High speed photographs - Johnson-cook constitutive models - Reactive materials - Reactive property - Solid mechanics - Stress-time curves

Classification code: 691.2Materials Handling Methods - 921Mathematics -951Materials Science

Numerical data indexing: Mass 1.00e+01kg, Pressure 2.18e+08Pa, Specific_Energy4.09e+04J/kg, Time 1.00e-03s

DOI: 10.14077/j.issn.1007-7812.2019.02.016

Database: Compendex

Compilation and indexing terms, 2019 Elsevier Inc.


14.

Title: Theoretical Calculation on the Synthetic Mechanism of 1,1'-Dihydroxy-5,5'-bitetrazole

Accession number: 20191906870147

Title of translation: 1,1'-二羟基-5,5'-联四唑合成机理的理论计算

Authors: Geng, Yong-Liang1 ; Wang, Peng-Cheng1; Lin, Qiu-Han1; Lu, Ming1; Zhou, Bao-Jing1

Author affiliation: 1 School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing; 210094, China

Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

Abbreviated source title: Huozhayao Xuebao

Volume: 42

Issue: 2

Issue date: April 1, 2019

Publication year: 2019

Pages: 120-124 and 140

Language: Chinese

ISSN: 10077812

CODEN: HUXUFP

Document type: Journal article (JA)

Publisher: China Ordnance Industry Corporation

Abstract: To study the synthetic mechanism of 1,1'-dihydroxy-5,5'-bitetrazole(H2DHBT) from diazidoglyoxime (DAzGO), the density functional theory(DFT) method was employed to calculate the reactants, transition state and product structure of the cyclization reaction of DAzGO molecule under acidic conditions were calculated by density functional theory(DFT) at the level of B3LYP/6-31G(d) basis set, and the reaction energy barrier was obtained. The results show that the cyclization reaction of DAzGO molecule is a two-step cyclization electrophilic reaction. The first elementary reaction is rate-determining step, the reaction energy barrier is 86.94kJ/mol. The presence of hydrogen ions and water molecules reduces the reaction energy barrier by 30.46kJ/mol, the hydrogen ions and water molecules can promote the cyclization reaction. The energy barriers of rate-determining step for the cyclization reaction of DAzGO in acetone, water and ether are 87.03,90.08 and 72.59kJ/mol.The smaller of the polarity of solvent, the greater of promotion to cyclization reaction of DAzGO molecule, and ether is the best reaction solvent.

2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

Number of references: 14

Main heading: Cyclization

Controlled terms: Acetone - Density functional theory - Energy barriers -Ethers - Molecules - Quantum chemistry - Solvents

Uncontrolled terms: Density functional theory methods - Diazidoglyoxime(DAzGO) - Electrophilic reaction - Rate determining step - Reaction energy barriers - Solvent effects - Tetrazoles - Theoretical calculations

Classification code: 801.4Physical Chemistry - 802.2Chemical Reactions -803Chemical Agents and Basic Industrial Chemicals - 804.1Organic Compounds -931.3Atomic and Molecular Physics

DOI: 10.14077/j.issn.1007-7812.2019.02.003

Database: Compendex

Compilation and indexing terms, 2019 Elsevier Inc.

Full text Full Text Links


15.

Title: Investigating the Effect of Adulteration Defect on the Properties of HMX/NQ Cocrystal Explosive by Molecular Dynamics Method

Accession number: 20191906870152

Title of translation: 分子动力学法研究掺杂缺陷对HMX/NQ共晶炸药性能的影响

Authors: Hang, Gui-Yun1 ; Yu, Wen-Li1; Wang, Tao1; Wang, Jin-Tao1; Miao,Shuang1

Author affiliation: 1 Rocket Force University of Engineering, Xi'an; 710025,China

Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

Abbreviated source title: Huozhayao Xuebao

Volume: 42

Issue: 2

Issue date: April 1, 2019

Publication year: 2019

Pages: 145-151

Language: Chinese

ISSN: 10077812

CODEN: HUXUFP

Document type: Journal article (JA)

Publisher: China Ordnance Industry Corporation

Abstract: To research the effect of adulteration crystal defect on the properties of HMX/ nitroguanidine (NQ) cocrystal explosive, the perfect model and HMX/ NQ cocrystal explosive model with adulteration defect were established, respectively. The stability, sensitivity, detonation performance and mechanical properties of various models were predicted by molecular dynamics method. The binding energy, trigger bond length distribution, interaction energy of the N-N trigger bond, cohesive energy density, detonation parameters and mechanical properties of different models were obtained and compared with that of the perfect model. The results show that compared with the perfect crystal, the decrease range of binding energy of defective crystal is 1.28%-11.05%, which indicates that the intermolecular interaction energy decreases and the stability of explosive decreases. The increase range of trigger bond length of defective crystal is 0.46%-5.29%, while the decrease range of interaction energy of the N-N trigger bond is 0.63%-17.24% and the decrease range of cohesive energy density is 0.83%-10.85%, indicating that the sensitivity of explosive increases and the safety decreases. The decrease range of density, detonation velocity and detonation pressure of defective crystal is 0.89%-7.06%, 0.68%-5.41%, 1.85%-14.18%, respectively, meaning that the power and energy density decrease. Owing to the influence of crystal defect, the decrease range of tensile modulus, bulk modulus and shear modulus is 0.106-4.368GPa, 0.086-2.573GPa and 0.082-1.835GPa, respectively, the increase range of Cauchy pressure is 0.108-1.787GPa, indicating that the rigidity and hardness decrease, while the ductility increases. Therefore, crystal defect will have a negative effect on stability, sensitivity and detonation performance of HMX/NQ cocrystal explosive.

2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

Number of references: 22

Main heading: Binding energy

Controlled terms: Bond length - Crystal defects - Density (specific gravity)- Detonation - Elastic moduli - Mechanical properties - Molecular dynamics - Physical chemistry

Uncontrolled terms: Co-crystals - Cohesive energy density - Detonation parameter - Detonation performance - Intermolecular interaction energies -Length distributions - Molecular dynamics methods - Stability of explosives

Classification code: 801.4Physical Chemistry - 931.2Physical Properties of Gases, Liquids and Solids - 933.1.1Crystal Lattice - 951Materials Science

Numerical data indexing: Percentage 1.28e+00% to 1.11e+01%, Percentage 4.60e-01% to 5.29e+00%, Percentage 6.30e-01% to 1.72e+01%, Percentage 8.30e-01% to 1.08e+01%, Percentage 8.90e-01% to 7.06e+00%, Pressure 1.06e+08Pa to 4.37e+09Pa, Pressure 1.08e+08Pa to 1.79e+09Pa, Pressure 8.20e+07Pa to 1.84e+09Pa, Pressure 8.60e+07Pa to 2.57e+09Pa

DOI: 10.14077/j.issn.1007-7812.2019.02.008

Database: Compendex

Compilation and indexing terms, 2019 Elsevier Inc.

Full text Full Text Links


16.

Title: Study of NO Adsorption on CuO(1 1 1) Surface by Density Functional Theory

Accession number: 20191906870148

Title of translation: 密度泛函理论研究NOCuO(1 1 1)的表面吸附

Authors: Yang, Xiu-Rong1 ; Zhang, Chi1; Gao, Hong-Xu2; Zhao, Feng-Qi2; Niu,Shi-Yao2; Ma, Hai-Xia1

Author affiliation: 1 School of Chemical Engineering, Northwest University, Xi'an; 710069, China

2 Science and Technology on Combustion and Explosion Laboratory, Xi'an Modern Chemistry Research Institute, Xi'an; 710065, China

Corresponding author: Ma, Hai-Xia (mahx@nwu.edu.cn)

Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

Abbreviated source title: Huozhayao Xuebao

Volume: 42

Issue: 2

Issue date: April 1, 2019

Publication year: 2019

Pages: 125-130 and 190

Language: Chinese

ISSN: 10077812

CODEN: HUXUFP

Document type: Journal article (JA)

Publisher: China Ordnance Industry Corporation

Abstract: To deeply study the interaction between nano CuO and NO produced by the decomposition of energetic materials (EMs), the adsorption behavior of NO on CuO(1 1 1) surface was investigated using density functional theory and at the most stable point of NO adsorption, the adsorption of NO2 on the surface of Cu surface and its influence on NO were studied. The adsorption configuration was calculated by the Perdew-Burke-Ernzerh (PBE) method of generalized gradient approximation (GGA) in DMol3 module. The results show that NO is adsorbed on the surface of CuO(1 1 1) in molecular form. The stable adsorption configuration is that the nitrogen atoms of NO interacts with the oxygen and copper atoms on the surface of CuO and all of them are chemical adsorption. The most stable adsorption configuration is that NO is adsorbed on Cu1 site and the adsorption energy is -0.89eV. The analysis of the HOMO-LUMO gaps and density of states indicate that there is a strong interaction between NO and CuO surface. Mulliken charge analysis shows that the charge transfers from NO to Cu surface, thus NO has a partial positive charge. In the decomposition process of EMs, NO gas is stably adsorbed on the surface of CuO, but the adsorption sites of NO may be occupied when there is NO2 which has a

stronger adsorption ability.

2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

Number of references: 28

Main heading: Density functional theory

Controlled terms: Adsorption - Charge transfer - Copper - Copper oxides -Decomposition - Nitrogen oxides - Nobelium - Quantum chemistry

Uncontrolled terms: Adsorption ability - Adsorption behavior - Adsorption energies - Chemical adsorption - Decomposition process - Generalized gradient approximations - Nano CuO - Strong interaction

Classification code: 544.1Copper - 622.1Radioactive Materials, General -801.4Physical Chemistry - 802.2Chemical Reactions - 802.3Chemical Operations- 804.2Inorganic Compounds - 922.1Probability Theory

Numerical data indexing: Electron_Volt -8.90e-01eV

DOI: 10.14077/j.issn.1007-7812.2019.02.004

Database: Compendex

Compilation and indexing terms, 2019 Elsevier Inc.


17.

Title: Effect of External Shell Coating and Coating Layer on Fast Cook-off Test of HAE Charge

Accession number: 20191906870161

Title of translation: 外部涂层及包覆层对HAE装药快速烤燃实验的影响

Authors: Li, Liang-Liang1 ; Shen, Fei1 ; Wang, Sheng-Qiang1; Xiao, Wei1; Wang,Zhong1

Author affiliation: 1 Xi'an Modern Chemistry Research Institute, Xi'an;710065, China

Corresponding author: Shen, Fei (shenf02@163.com)

Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

Abbreviated source title: Huozhayao Xuebao

Volume: 42

Issue: 2

Issue date: April 1, 2019

Publication year: 2019

Pages: 202-206

Language: Chinese

ISSN: 10077812

CODEN: HUXUFP

Document type: Journal article (JA)

Publisher: China Ordnance Industry Corporation

Abstract: To assess the vulnerability of HAE charge (HMX-based aluminized explosive), a roast bomb structure with different thermal conductivity of external shell coating and coating layer was designed. The response properties of explosive charge under fast cook-off condition were studied. The effects of different outer shell coating materials (organic insulating layer and polymer composite coating) and coating materials with different thermal conductivity on the fast cook-off time and response results of HAE explosive charge were analyzed. The results show that thermal conductivity of external shell coating and coating layer does not change the response grade of the explosive charge (explosives are combustion or thrown out), they mainly affect the time of pressure membrane breakage and the time of cook-off resistance, it is delayed to a different extent than the comparative formulation (the outer coating is uncoated and the coating is silicone rubber). The influence of organic coating on the response parameters of explosive charge is not obvious, the film breaking time(t1) and the time of cook-off resistance (t3) of the roast bomb were delayed by 0.06min and 0.12min, respectively, compared with the comparative formulation,when the polymer composite coating is used alone, the response parameters of explosive charge can be effectively prolonged, the values of t1 and t3 were delayed by 1.17min and 2.81min, respectively, compared with the comparative formulation. When the external coating layer is an organic coating and the coating is replaced by hollow glass microspheres (HGMs), the explosive charge was ejected at the same time when the pressure membrane was broken, and the explosive charge can be burned steadily by using the external coating of polymer composite coating and the coating layer of HGMs substituted silicone rubber.

2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

Number of references: 14

Main heading: Plastic coatings

Controlled terms: Bombs (ordnance) - Calcination - Composite coatings -Composite materials - Elastomers - Explosives - Glass - Microspheres -Organic coatings - Plating - Rubber - Shells (structures) - Silicone rubber - Silicones - Thermal conductivity - Thermal insulating materials

Uncontrolled terms: Explosion mechanics - Fast cook-off - HAE charge -Hollow glass microspheres - Polymer composite - Vulnerability

Classification code: 404Civil Defense and Military Engineering -408.2Structural Members and Shapes - 413.2Heat Insulating Materials -539.3Metal Plating - 641.1Thermodynamics - 802.3Chemical Operations -812.3Glass - 813.2Coating Materials - 815.1.1Organic Polymers -

818.1Natural Rubber - 818.2Elastomers - 951Materials Science

Numerical data indexing: Time 1.69e+02s, Time 3.60e+00s, Time 7.02e+01s, Time 7.20e+00s

DOI: 10.14077/j.issn.1007-7812.2019.02.017

Database: Compendex

Compilation and indexing terms, 2019 Elsevier Inc.


18.

Title: Synthesis and Thermal Properties of Heat-tesistant Explosive TKX-55

Accession number: 20191906870150

Title of translation: 耐热炸药TKX-55的合成与热性能

Authors: Chai, Xiao-Xiao1 ; Li, Yong-Xiang2 ; Cao, Duan-Lin2; Wang, Jian-Long2; Guo, Hao-Qi2

Author affiliation: 1 School of Environment and Safety Engineering, North University of China, Taiyuan; 030051, China2 School of Chemical Engineering and Technology, North University of China, Taiyuan; 030051, China

Corresponding author: Li, Yong-Xiang (574732638@qq.com)

Source title: Huozhayao Xuebao/Chinese Journal of Explosives and Propellants

Abbreviated source title: Huozhayao Xuebao

Volume: 42

Issue: 2

Issue date: April 1, 2019

Publication year: 2019

Pages: 135-140

Language: Chinese

ISSN: 10077812

CODEN: HUXUFP

Document type: Journal article (JA)

Publisher: China Ordnance Industry Corporation

Abstract: To seek the novel heat-resistant explosive, 5,5'-bis(2,4,6-trinitrophenyl)-2,2'-bi(1,3,4-oxadiazole) (TKX-55) was synthesized via four steps of oxidation, chloridization, condensation and cyclization using 2,4,6-trinitrotoluene (TNT) as raw material. Four products were characterized by thin-layer chromatography, Fourier transform infrared spectrometer (FTIR), mass spectrometry(MS), elemental analysis and different scanning calorimetry (DSC). The results show that the optimal reaction conditions for the oxidation reaction are as follows: the molar ratio of TNT to sodium chlorate (NaClO3) is 1:4, the reaction time is 4h, and the reaction temperature is 90 to make the yield of 2,4,6-trinitrobenzoic acid(TNBA)increases by 4%. The optimal reaction conditions for the condensation reaction are: taking tetrahydrofuran (THF) as solvent, N,N-dimethylformamide (DMF) as deacid reagent, the molar ratio of 2,4,6- trinitrobenzoic acid (TNBC) to oxalyl dihydrazide as 2:1, the reaction temperature as 5, and the reaction time as 36h to make the yield of bis(2,4,6-trinitrobenzoyl)oxalohydrazide increase by 7%. The optimal reaction conditions for cyclization reaction are as follows: the most suitable dehydrating agent is fuming sulfuric acid (mass fraction of 20%), the reaction temperature is 15, the reaction time is 24 h, and the yield of TKX-55 is 93%. The decomposition temperature of TKX-55 is 365.5, indicating that TKX-55 is a heat-resistant explosive with good thermal stability.

2019, Editorial Board of Journal of Explosives & Propellants. All right reserved.

Number of references: 13

Main heading: Cyclization

Controlled terms: Chlorine compounds - Condensation - Condensation reactions- Dehydration - Dimethylformamide - Explosives - Fourier transform infrared spectroscopy - Mass spectrometry - Molar ratio - Organic solvents - Sodium compounds - Thin layer chromatography

Uncontrolled terms: 1 , 3 , 4-oxadiazole - 2 ,4 ,6-trinitrotoluene -Decomposition temperature - Fourier transform infrared spectrometer - Heat-resistant explosives - N ,N-Dimethylformamide - Optimal reaction condition - Organic Chemistry

Classification code: 801Chemistry - 802.2Chemical Reactions - 802.3Chemical Operations - 804.1Organic Compounds

Numerical data indexing: Percentage 2.00e+01%, Percentage 4.00e+00%,Percentage 7.00e+00%, Percentage 9.30e+01%, Time 1.44e+04s, Time 8.64e+04s

DOI: 10.14077/j.issn.1007-7812.2019.02.006

Database: Compendex

Compilation and indexing terms, 2019 Elsevier Inc.