火炸药学报2021，Vol.44Issue(3)：316-321,6.DOI:10.14077/j.issn.1007-7812.202012019
TMETN在浇铸改性双基推进剂中塑化性能的分子动力学模拟及实验研究
Study on the Plasticizing Properties of TMETN in Casting CMDB Propellants by Molecular Dynamics Simulation and Experiment
摘要
Abstract
In order to implement the application of trimethylolethane trinitrate(TMETN)in the casting composite modified double-base(CMDB)propellants to reduce propellant sensitivity,the interaction between different plasticizers(NG,TMETN and NG/BTTN)and NC was simulated by molecular dynamics,and the parameters such as gyration radius,volume distribution and radial distribution function were obtained.The simulation results were verified by curing experiments,mechanical proper-ties and mechanical sensitivity tests.The results show that the interaction between NG and NC is the strongest and the gyration radius is the largest among the different plasticizers.The plasticizing property of TMETN is worse,so the assistant plasticizer should be added.The propellant with only TMETN can not be cured even at 75℃,while the propellant with mass ratio of 1 ∶ 1 for NG and TMETN can be cured well at 70℃.At the same time,TMETN can make the impact sensitivity of propellant up to 58.6cm,and the friction sensitivity reduce to less than 40％,which is consistent with the theoretical calculation results of NC plasticizing effect in the order of NG＞NG/BTTN＞TMETN.关键词
浇铸改性双基推进剂/TMETN/塑化/感度/分子动力学模拟Key words
CMDB propellants/TMETN/plasticization/sensitivity/molecular dynamics simulation分类
军事科技引用本文复制引用
屈蓓,唐秋凡,张亚俊,张正中,赵昱,樊学忠,付小龙,邓重清,李吉祯..TMETN在浇铸改性双基推进剂中塑化性能的分子动力学模拟及实验研究[J].火炸药学报,2021,44(3):316-321,6.基金项目
National Natural Science Foundation of China(No.21805226 （）
No.21805223) （）
