固体火箭技术2026，Vol.49Issue(2)：260-266,7.DOI:10.7673/j.issn.1006-2793.2026.02.010
基于LAP增强剂的高强度HTPB推进剂力学性能研究
Mechanical properties of high-strength HTPB propellants enhanced by LAP agents
陈旭 1姜丽萍 1肖啸 1杨巍璐 1李洋 1黄海涛1
作者信息
摘要
Abstract
The mechanical properties of solid propellants are of great significance to the structural integrity and operational reliability of solid rocket motors.To tackle the typical issue of reduced maximum elongation in high-strength HTPB composite propellants,a diol-type chain extender LAP was introduced as a reinforcing agent.The effects of reinforcing agent content,curing parameters,and bonding agent on the uniaxial tensile properties of the propellants were systematically investigated,and their mechanical behavior under different temperatures was also analyzed.Meanwhile,small-angle X-ray scattering(SAXS)was used to characterize the microphase-separated structure of the binder matrix.The results show that the introduction of LAP shifts the SAXS scattering peak of the binder matrix from approximately 11.7 nm to 6.6 nm,with a clearer peak profile,indicating an enhanced microphase-separated structure.This structure serves as physical cross-linking points,which significantly improve the tensile strength of the propellant,reaching 3.36 MPa at 20℃,while the elongation at break remains at 27%.关键词
高强度HTPB推进剂/力学性能/LAP增强剂/小角X射线散射/微相分离Key words
High-strength HTPB propellants/mechanical property/LAP reinforcing agent/small-angle X-ray scattering/microphase-separation分类
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陈旭,姜丽萍,肖啸,杨巍璐,李洋,黄海涛..基于LAP增强剂的高强度HTPB推进剂力学性能研究[J].固体火箭技术,2026,49(2):260-266,7.
