关键词: 端羟基聚丁二烯推进剂;聚氨酯推进剂;偶联剂;网络结构;推进剂性能

Abstract: The behaving of ethanolamine additives in Al/HTPB composites has been investigated utilizing the means of tensile testing, chemical analysis, dynamic mechanical measurements, etc. The experiments show that ethanolamine additives added to the composites improve their mechanical properties remarkably. Tri-ethanolamine can improve their low temperature mechanical properties by changing the morphological structure of binder matrix; Whereas the reaction products of ethanolamine with boron trifluoride are able to increase the mechanical properties of the composites evidently in wide temperature range because the products ameliorate the network and morphological structure of binder matrix.

Key words: Hydroxy terminated polybutadiene;Polyurethane propellant;Coupling agent;Lattice structure;Propellent property