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[1]张正中,蔚红建,唐秋凡,等.GAP对NG分子间相互作用及CMDB推进剂感度的影响[J].火炸药学报,2018,41(2):173-177.[doi:10.14077/j.issn.1007-7812.2018.02.012]
 ZHANG Zheng-zhong,YU Hong-jian,TANG Qiu-fan,et al.Effects of GAP on Molecular Interaction of NG and Mechanical Sensitivity of CMDB Propellant[J].,2018,41(2):173-177.[doi:10.14077/j.issn.1007-7812.2018.02.012]
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GAP对NG分子间相互作用及CMDB推进剂感度的影响()
     
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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:
173-177
栏目:
出版日期:
2018-04-27

文章信息/Info

Title:
Effects of GAP on Molecular Interaction of NG and Mechanical Sensitivity of CMDB Propellant
作者:
张正中 蔚红建 唐秋凡 齐晓飞 屈蓓
西安近代化学研究所, 陕西 西安 710065
Author(s):
ZHANG Zheng-zhong YU Hong-jian TANG Qiu-fan QI Xiao-fei QU Bei
Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
关键词:
NGGAP分子间相互作用径向分布函数键长分子动力学CMDB推进剂
Keywords:
NGGAPmolecular interactionradial distribution functionbond lengthmolecular dynamicCMDB propellant
分类号:
TJ55;V512
DOI:
10.14077/j.issn.1007-7812.2018.02.012
文献标志码:
-
摘要:
通过构建NG、GAP及GAP/NG共混体系模型,采用分子动力学模拟方法,对GAP/NG体系分子间作用力、分子间径向分布函数及O-NO2键长分布变化进行了分析;分别用理论和实验方法研究了GAP对NG分子间相互作用和CMDB推进剂机械感度的影响。结果表明,在GAP存在条件下,NG分子间作用力明显减弱,从而减小了受外界刺激时NG分子间的内摩擦;GAP塑化后使整个体系产生明显的黏弹性,可以在NG体系受到冲击作用时起到一定缓冲作用;GAP使NG分子中O-NO2的平均键长和最大键长分别从1.74 nm和1.77 nm,降低至1.65 nm和1.71 nm,从而使O-NO2键在受到外界刺激时更难断裂;添加质量分数3% GAP的HMX-CMDB推进剂的撞击感度H50由18.5 cm提高至30.2 cm,摩擦感度P由76%降至52%,表明GAP可以有效降低CMDB推进剂的机械感度。
Abstract:
The intermolecular interaction force, radial distribution function and bond length distribution change of O-NO2 for the GAP/NG system were analyzed through building the molecular model of NG, GAP and GAP/NG blending system and using molecular dynamic simulation method. The effects of GAP on the molecular interaction of NG and mechanical sensitivity of CMDB propellant were investigated by theoretical and experimental methods, respectively. The results show that under the presence of GAP, the intermolecular interaction force of NG weakens evidently, thereby the friction between NG molecules caused by external stimuli is reduced. The plasticizing of GAP makes the whole system produce apparent viscoelasticity, which can play a buffering action for NG system under the action of impact. The GAP makes the average bond length and maximum bond length of O-NO2 of NG molecule reduce from 1.74 nm and 1.77 nm to 1.65 nm and 1.71 nm respectively, thereby, the O-NO2 bond is more difficult to break when suffering external stimuli. The impact sensitivity (H50) of HMX-CMDB propellant with 3% (mass fraction) GAP increases from 18.5 cm to 30.2 cm and the friction sensitivity (P) reduces from 76% to 52%, indicating that GAP can effectively reduce the mechanical sensitivity of CMDB propellant.

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备注/Memo

备注/Memo:
收稿日期:2017-10-18;改回日期:2017-12-09。
基金项目:装备发展部重大预研专项
作者简介:张正中(1987-),男,硕士,工程师,从事固体推进剂配方研究。E-mail:zhangzhengzhong920@163.com
更新日期/Last Update: 1900-01-01