关键词: 端羟基聚丁二烯推进剂;氧化剂;老化性能分析

Abstract: In this paper, the effects of different oxidizers on the aging behaviour of HTPB propellants have been studied.The experiments are conducted in air at 80℃.The aging behaviour is criticized by means of these parameters such as tensile strength,extensibility,shore scleroscope hardness, weight loss and relative coupling density of HTPB propellant.The experimental results have shown that at the same storage temperature,as the storage time increases the tensile strength, the hardness and the relative coupling density raise,the extensibility reduces,and the Weigh loss reduces a little.Thus,if we select the oxidizer which is stable and unaffected by air,we can improve the aging behaviours of HTPB propellant.Also, we use TG and IR to prove the results and to conduct a initial investigation on the mechanism of HTPB propellant aging.

Key words: Hydroxy terminated polybutadiene propellant;Oxidizer;Aging;Performance analysis