摘要
为了改善端羟基聚丁二烯(HTPB)复合固体推进剂粘合剂的力学性能,采用改性超支化聚酯与以HTPB为基的聚氨酯(PU)形成互穿网络。结果表明,改性超支化聚酯可以明显的提高HTPB胶片的力学性能,各代的超支化聚酯均在加入量为20%左右时,力学性能最好。其中加入20%第4代的改性超支化聚酯效果最为明显,其最大拉伸强度提高了3.36倍,达到2.3MPa,最大延伸率提高了3.69倍,达到1860%。超支化聚酯的加入对HTPB胶片起到了很好的增强增韧作用。
A novel interpenetrating polymer network, which based on modified hyperbranched polyester and HTPB polyurethane, was prepared for enhancing mechanical properties of HTPB based composite solid propellants. The results indicate that with the modified hyperbranched polyester added, the tensile strength and elongation of HTPB polyurethane elastomer improves obviously. Specially, when the content of modified hyperbranched polyester of generation 4 rises up to twenty percentage of the whole weight, the resultant elastomer has the best tensile strength and elongation, which increase 3.36 times and 3.69 times than pure elastomer, and reach 2.3 MPa and 1860% respectively. Therefore, the modified hyperbranched polyester can serve as a better modifer for HTPB propellants.
出处
《含能材料》
EI
CAS
CSCD
2007年第4期352-355,共4页
Chinese Journal of Energetic Materials
基金
火炸药行业青年基金项目(42001060202)
关键词
高分子材料
复合固体推进剂
HTPB
力学性能
超支化聚酯
互穿聚合物网络
polymer materials
composite propellant
HTPB
mechanical properties
hyperbranehed polyester
interpenetrating polymer network
