固体火箭技术2023，Vol.46Issue(6)：886-892,7.DOI:10.7673/j.issn.1006-2793.2023.06.011
AP级配及含量对HTPB固体推进剂界面约束作用影响机理研究
Influence mechanism of AP gradation and content on interface restriction of HTPB solid propellants
摘要
Abstract
Composite solid propellants are a type of energetic heterogeneous particle-filled material,where the matrix polymer molecules are adsorbed on the surface of the filler through physical entanglement and hydrogen bonding,creating matrix-filler inter-face interactions.This interaction restricts the movement of the matrix polymer cross-linked network molecules.In this work,the differences in the interface constraint effects of HTPB solid propellants caused by ammonium perchlorate(AP)grading and varying proportions of hydroxyl-terminated polybutadiene(HTPB)were explored through dynamic mechanical experiments,swelling tests,u-niaxial tensile tests,and cyclic tensile tests.Additionally,the multidimensional impact of these changes on the structure and perform-ance of the propellant was investigated.The results indicate that with the increase in fine particle AP content and total AP content,the proportion of the constrained region increases.The effect of restricting the matrix cross-linked network molecules is enhanced,and the interface interaction of HTPB solid propellants is improved.Under uniaxial tensile conditions,the strength and modulus of the propellant increase,while the elongation decreases.Under cyclic loading,the constraint effect increases the energy dissipation process,exacerbating the fatigue damage process of HTPB solid propellants.关键词
HTPB固体推进剂/AP级配/约束作用/界面/力学性能Key words
HTPB solid propellants/AP gradation/restriction/interface/mechanical property分类
航空航天引用本文复制引用
贾云娟,张晨,郭翔,吴世曦,姚南,周重洋,张天福,熊伟强,曹兰,臧晓燕,高扬..AP级配及含量对HTPB固体推进剂界面约束作用影响机理研究[J].固体火箭技术,2023,46(6):886-892,7.基金项目
国家自然科学基金(21905084). （21905084）
