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[1]孙鹏飞,廖昕,王泽山.醋酸丁酸纤维素对发射药涂覆层低温力学性能的影响[J].火炸药学报,2018,41(2):186-191,196.[doi:10.14077/j.issn.1007-7812.2018.02.014]
 SUN Peng-fei,LIAO Xin,WANG Ze-shan.Effects of Cellulose Acetate Butyrate on Mechanical Properties of Coating Layers of Gun Propellant at Low Temperature[J].,2018,41(2):186-191,196.[doi:10.14077/j.issn.1007-7812.2018.02.014]
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醋酸丁酸纤维素对发射药涂覆层低温力学性能的影响()
     
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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:
186-191,196
栏目:
出版日期:
2018-04-27

文章信息/Info

Title:
Effects of Cellulose Acetate Butyrate on Mechanical Properties of Coating Layers of Gun Propellant at Low Temperature
作者:
孙鹏飞 廖昕 王泽山
南京理工大学化工学院, 江苏 南京 210094
Author(s):
SUN Peng-fei LIAO Xin WANG Ze-shan
School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
关键词:
发射药端面局部阻燃冷脆性黏结强度燃烧渐增性钝感剂醋酸丁酸纤维素CAB
Keywords:
gun propellantlocal end-face flame retardantcold brittlenessadhesive strengthcombustion progressitydesensitized agentcellulose acetate butyrateCAB
分类号:
TJ55;TQ562
DOI:
10.14077/j.issn.1007-7812.2018.02.014
文献标志码:
-
摘要:
为提高发射药涂覆层在低温环境下的力学强度,选择醋酸丁酸纤维素(CAB)和TiO2粉末作为钝感剂,分别按照不同比例与三胍-15药片(主要组分为NC和NG)混合,用醇酮溶液(乙醇与丙酮体积比为1∶1)配制成涂覆液,进而制成拉伸样品进行拉伸试验,来比较涂覆层与发射药的黏结强度,并通过三维视频观察分析涂覆位置断裂情况;采用端面局部阻燃(阻燃位置为发射药的端面,且发射药内孔保持通气状态)的方法,利用喷涂工艺制备得到涂覆发射药,并进行了密闭爆发器试验,比较分析了不同钝感剂配方涂覆的发射药在不同温度下的L-B曲线。结果表明,在-40℃时,含有TiO2的涂覆层力学强度较差,在TiO2质量分数为35%时达到相对最大值7.871 MPa;而含有CAB的涂覆层黏结强度有所提高,在CAB质量分数为35%时达到9.970 MPa。采用CAB作为钝感剂的涂覆发射药在-40℃下的燃烧渐增性相比采用TiO2时提高了9.278%。
Abstract:
To improve the mechanical properties of coating layer of gun propellant at low temperature environment, selecting cellulose acetate butyrate (CAB) and TiO2 powder as desensitized agents, cellulose acetate butyrate (CAB) and TiO2 powder were mixed with triguannidine-15 absorption propellant tablets (main component is nitrocellulose and nitroglycerin) according to different proportion respectively and the coating liquid was prepared by ethanol-acetone solution (the volume ratio of ethanol and acetone is 1:1).Then, tensile samples were made for the tensile experiments to compare the bonding strength of coating layer and propellant, and the fracture situation of coated position was observed and analyzed by 3D video. Using the local flame retardant (flame retardant position is the end face of propellant and propellant hole maintains ventilation state) method of end face, the coated gun propellant was prepared by spraying. The closed bomb experiments of propellant grains were performed. The L-B curves at different temperatures of coated propellants coated by different desensitized agent formulation were compared and analyzed. The results show that at -40℃, the mechanical strength of coated propellants with TiO2 is poorer.When the mass fraction of TiO2 reaches 35%, the pressure reaches a relative maximum of 7.871 MPa, while the adhesive strength of coating layers with CAB increases. When the mass fraction of CAB is 35%, the adhesive strength of coating layers reaches 9.970 MPa.The combustion progressity of the coated propellant with CAB as desensitized agent at -40℃ increases by 9.278% when compared with the use of TiO2.

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备注/Memo

备注/Memo:
收稿日期:2017-09-11;改回日期:2017-11-24。
基金项目:国家自然科学基金(No.51506093)
作者简介:孙鹏飞(1989-),男,博士研究生,从事发射药性能研究。E-mail:superb_spf@hotmail.com
更新日期/Last Update: 1900-01-01