基于分段老化模型的HTPB推进剂贮存寿命  

Storage Life of HTPB Propellant Based on Segmented Aging Model

作　　者：杜永强[1] 郑坚[1] 彭威[1] 张晓[1] 顾志旭[1] DU Yong-qiang ZHENG Jlan PENG Wei ZHANG Xiao GU Zhi-xu(Ordnance Engineering College, Shijiazhuang 050003, Chin)

机构地区：[1]军械工程学院,河北石家庄050003

出　　处：《含能材料》2016年第10期936-940,共5页Chinese Journal of Energetic Materials

摘　　要：针对常用老化模型不能准确描述端羟基聚丁二烯(HTPB)推进剂贮存老化不同阶段特点的问题,提出了一种分段老化模型。对HTPB推进剂进行了高温加速寿命试验,以最大延伸率作为性能变化表征参数,将HTPB推进剂的老化机理分三个阶段进行了分析,并根据老化不同阶段的相关性分析结果,建立了分段老化模型。利用时温等效原理,得到了高温(60℃)加速老化和常温(25℃)有效贮存的时间转换关系,结合分段老化模型,预估HTPB推进剂在常温(25℃)条件下贮存寿命为11.60年。该模型的相关系数R>0.95,标准差R_(std)<0.015。To solve the problem that the Hydroxyl-Terminated Polybutadiene（HTPB） propellant aging characteristics at different storage stages cannot be described by commonly used aging models accurately, the segmented aging model was proposed. The high temperature accelerated life test of the HTPB propellant was carried out, and the aging mechanism of HTPB propellant was analyzed in three stages by using the maximum elongation as the characteristic parameter. According to the correlation analysis results of different aging stages, the segmented aging model was established. The time conversion relationship between high temperature （60 ℃） accelerated aging and room temperature （25 ℃） effective storage was obtained by using the time-temperature equivalence principle, and the storage life of HTPB propellant at room temperature （25 ℃） is predicted for 11.60 years by combing with the segmented aging model. The correlation coefficient R of the segmented aging model is more than 0.95, and the standard deviation Rstd is less than 0.015.

关 键 词：端羟基聚丁二烯(HTPB)推进剂 高温加速寿命试验 时温等效 分段老化模型 相关性分析 

分 类 号：V512.3[航空宇航科学与技术—航空宇航推进理论与工程]