固体火箭技术2025，Vol.48Issue(2)：265-272,8.DOI:10.7673/j.issn.1006-2793.2025.02.011
基于碳-碳双键定量分析的HTPB固体推进剂老化性能研究
Aging properties of HTPB solid propellants based on quantitative analysis of carbon-carbon double bonds
崔英翠 1夏德斌 1李昱静 1张健 1林凯峰 1杨玉林1
作者信息
- 1. 哈尔滨工业大学 空间电源全国重点实验室,化工与化学学院,哈尔滨 150001||哈尔滨工业大学 新能源转换与存储关键材料技术工信部重点实验室,哈尔滨 150001
- 折叠
摘要
Abstract
During long-term storage of hydroxyl-terminated polybutadiene(HTPB)propellants,the content of carbon-carbon double bonds(C=C)decreases over time,however,this decreasing trend can only be assessed qualitatively.Therefore,the quanti-tative analysis of C=C content in HTPB propellant with different aging time was realized by liquid bromine titration.Furthermore,taking the measured C=C content as the abscissa,the absorption intensity of the characteristic peak of the C=C in the infrared spectrum and the maximum elongation of the propellant as the ordinate,the regression equations were fitted and the correlation analy-sis was carried out.The results indicate that the double bonds content decrease from 6.79 mmol/g to 6.29 mmol/g after aging at 70° C for 112 days.The regression equation fitting correlation coefficients of the C=C characteristic peak absorption intensity and the maximum elongation of the propellant are all greater than 0.9.The liquid bromine addition titration method to determine C=C con-tents of HTPB propellants has a confidence level of 99%,providing a theoretical support for lifetime prediction of propellants.关键词
HTPB/固体推进剂/老化性能/滴定/加成反应/碳-碳双键Key words
HTPB/solid propellant/aging property/titration/addition reaction/carbon-carbon double bonds引用本文复制引用
崔英翠,夏德斌,李昱静,张健,林凯峰,杨玉林..基于碳-碳双键定量分析的HTPB固体推进剂老化性能研究[J].固体火箭技术,2025,48(2):265-272,8.
