硝化纤维素/硝化甘油共混体系力学状态的温度依赖特性

推进技术 ›› 2016, Vol. 37 ›› Issue (7): 1387-1392.

硝化纤维素/硝化甘油共混体系力学状态的温度依赖特性

齐晓飞,张晓宏,严启龙,胡米

西安近代化学研究所，陕西西安 710065,西安近代化学研究所，陕西西安 710065,西安近代化学研究所，陕西西安 710065,西安近代化学研究所，陕西西安 710065

发布日期:2021-08-15
作者简介:齐晓飞, 男，硕士，副研究员，研究领域为固体推进剂配方设计与模拟。
基金资助:
燃烧与爆炸技术重点实验室基金(9140C350319140C35161)。

Temperature Dependence of Mechanical State for

Xi’an Modern Chemistry Research Institute，Xi’an 710065，China,Xi’an Modern Chemistry Research Institute，Xi’an 710065，China,Xi’an Modern Chemistry Research Institute，Xi’an 710065，China and Xi’an Modern Chemistry Research Institute，Xi’an 710065，China

Published:2021-08-15

摘要/Abstract

摘要： 为研究硝化纤维素(NC)/硝化甘油(NG)共混体系力学状态的温度依赖特性，采用动态力学性能实验和分子动力学模拟研究了温度对其宏微观力学状态的影响。结果表明，NC/NG共混体系的力学状态与NC分子链在不同温度下的运动状态密切相关，主要取决于链段运动需要的自由体积、热运动能力及其与NG分子间的作用力。NC/NG共混体系的两个力学松弛过程分别与自由体积的不连续变化和NC分子链链段运动的突然增强有关。

关键词: 物理化学；硝化纤维素；硝化甘油；力学状态；温度

Abstract: In order to study the temperature dependence of mechanical state for nitrocellulose (NC)/nitroglycerin (NG) blend，the effects of temperature on the macro and micro mechanical properties of NC/NG blend were investigated by means of dynamic mechanical analyzer and molecular dynamics simulation. It has been indicated that the mechanical states of NC/NG blend are correlated with the motion states of NC molecular chains at different temperature. The latter is basically determined by the free volume，the capacity of their thermal motion，as well as the interaction force with NG molecules. It has been found that there are two mechanical relaxation processes，which are caused by the discontinuous nature of free volume and a sudden increase of rotary motion inside NC molecules，respectively.

Key words: Physical chemistry；Nitrocellulose；Nitroglycerine；Mechanical state；Temperature

齐晓飞,张晓宏,严启龙,胡米. 硝化纤维素/硝化甘油共混体系力学状态的温度依赖特性[J]. 推进技术, 2016, 37(7): 1387-1392.

QI Xiao-fei,ZHANG Xiao-hong,YAN Qi-long,HU Mi. Temperature Dependence of Mechanical State for[J]. Journal of Propulsion Technology, 2016, 37(7): 1387-1392.

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