固体火箭技术2017，Vol.40Issue(6)：741-745,757,6.DOI:10.7673/j.issn.1006-2793.2017.06.012
HTPB推进剂“脱湿点”及快慢组合拉伸研究
Study of dewetting points and composite rate tensile for HTPB propellants
摘要
Abstract
For the requirements about structural integrity analysis of the solid motor grain of air-to-air missile,the mechanical property of a new hydroxyl-terminated polybutadiene (HTPB)propellant was investigated by tensile tests under complex loading.Constant and composite speed tensile tests were made at a high,normal and low temperature to study the effect of temperature,stretching rate,and switching strain on the ultimate mechanical properties and dewetting of these propellants.The results show the propellant has good mechanical properties at low temperature,simultaneously increases in tensile strength,breaking strength,maximum elongation,breaking elongation and initial modulus with the increasing stretching rate or decreasing temperature.The dewetting point has the forward trend and strength of which has the increasing trend with the increase of stretching rate or decrease of temperature,showing a higher probability to dewetting.The composite rate tensile tests show a decrease trend in tensile strength,breaking strength,maximum elongation and breaking elongation with the increase of the switching strain.They can provide a reference in the process of air-to-air missile motor meticulous structural integrity analysis.关键词
HTPB推进剂/力学性能/脱湿/结构完整性Key words
HTPB propellant/mechanical property/dewetting/structural integrity分类
航空航天引用本文复制引用
马浩,职世君,申志彬,李道奎..HTPB推进剂“脱湿点”及快慢组合拉伸研究[J].固体火箭技术,2017,40(6):741-745,757,6.基金项目
国家自然科学基金(U1404106 （）
11402283). （）
