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[1]王奥,王彬彬,徐滨,等.RDX粒度对改性单基药燃烧性能及力学性能的影响[J].火炸药学报,2018,41(2):197-201.[doi:10.14077/j.issn.1007-7812.2018.02.016]
 WANG Ao,WANG Bin-bin,XU Bin,et al.Effect of the Particle Size of RDX on Combustion and Mechanical Performance of Modified Single-base Gun Propellant[J].,2018,41(2):197-201.[doi:10.14077/j.issn.1007-7812.2018.02.016]
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RDX粒度对改性单基药燃烧性能及力学性能的影响()
     
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《火炸药学报》[ISSN:1007-7812/CN:61-1310/TJ]

卷:
41卷
期数:
2018年第2期
页码:
197-201
栏目:
出版日期:
2018-04-27

文章信息/Info

Title:
Effect of the Particle Size of RDX on Combustion and Mechanical Performance of Modified Single-base Gun Propellant
作者:
王奥 王彬彬 徐滨 廖昕
南京理工大学化工学院, 江苏 南京 210094
Author(s):
WANG Ao WANG Bin-bin XU Bin LIAO Xin
School of Chemistry and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
关键词:
改性单基药RDX燃烧性能抗冲击强度密闭爆发器试验
Keywords:
modified single-base gun propellantRDXcombustion performanceimpact propertiesclosed bomb experiment
分类号:
TJ55;TQ562
DOI:
10.14077/j.issn.1007-7812.2018.02.016
文献标志码:
-
摘要:
为了研究RDX粒度对改性单基药性能的影响,采用溶剂法挤压成型工艺,制备了含不同粒径(0.5、7.6和100 μm)RDX的改性单基药;通过密闭爆发器试验测试了改性单基药的燃烧性能;采用万能材料试验机、简支梁式抗冲击试验机测试了改性单基药的力学性能;并通过扫描电镜观察了冲击断面,分析了改性单基药的破坏机理。结果表明,当RDX质量分数为10%时,改性单基药的燃速随着RDX粒度的增大而增大;小粒径RDX(0.5与7.6 μm)改性单基药燃烧稳定,当RDX粒径增至100 μm时,改性单基药在60 MPa附近的u-p曲线出现转折,燃速压力指数突变,燃烧不稳定;改性单基药的抗压强度与抗冲击强度随着RDX粒度的增大而降低;RDX粒度显著影响发射药样品的断裂模式;当RDX粒度较小时,改性单基药的抗冲击强度主要受RDX颗粒与NC基体的界面黏结强度影响;当RDX粒度增大后,单基药的抗冲击强度主要受RDX颗粒的自身强度和其与NC基体的界面黏结强度共同影响。
Abstract:
To study the effect of cyclotrimethylenetrinitramine(RDX) particle size on the performance of modified single-base gun propellant, the modified single-base gun propellants containing RDX with different particle size(0.5,7.6,100 μm) were prepared via a extrusion molding process by solvent method. The combustion performance of these modified single-base gun propellants was studied by closed bomb experiment.The mechanical properties of the modified single-base gun propellants were tested by the universal testing machine and charpy impact testing machine.And the fracture mechanism of modified single-base gun propellants was analyzed by means of scanning electron microscopy image of the impact fractured surfaces. The results show that when the mass fraction of RDX is 10%,the burning rate of the modified single-base gun propellant increases with increasing the particle size of RDX. The combustion of modified single-base gun propellants with small particle size RDX(0.5 and 7.6 μm) is stable.When the particle size of RDX increases to 100 μm, the u-p curve of modified single-base gun propellant appears a turning point at about 60 MPa and the burning rate pressure exponent changes abrupt, the combustion of propellant is unstable. The compressive strength and impact strength decrease with increasing the particle size of RDX. The particle size of RDX has significant influence on the fracture mechanism of modified single-base gun propellants.When the particle size of RDX is small, the impact strength of modified single-base gun propellants is mainly determined by the interface bond strength between RDX particles and NC matrix.When the particle size of RDX increases,the impact strength is determined by the self-strength of the RDX particles and the interface bond strength between RDX particles and NC matrix.

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备注/Memo

备注/Memo:
收稿日期:2017-10-25;改回日期:2017-12-01。
基金项目:国家自然科学基金(No.51506093)
作者简介:王奥(1993-),男,硕士研究生,从事发射药配方及工艺研究。E-mail:wangao0664@163.com
通讯作者:廖昕(1961-),男,研究员,从事发射药配方及装药设计研究。E-mail:liaoxin331@163.com
更新日期/Last Update: 1900-01-01