摘要
以N,N-二(2-羟丙基)苯胺(Is)作扩链剂,以甲苯二异氰酸酯(TDI)作交联剂,合成了一种环氧化端羟基聚丁二烯(EHTPB)型聚氨酯材料。研究了环氧值、固化时间、硬软段比、固化参数和填料对材料性能的影响。结果表明,Is与EHTPB最佳摩尔比为1.54,NCO与OH最佳摩尔比为2.05,催化剂最佳用量为0.075%,填料ZnO用量为4.0%,SiO2用量为1.47%,在70℃条件下,最佳固化时间为5 d。所制备的EHTPB型聚氨酯材料的力学性能优于HTPB型聚氨酯材料。
The polyurethane material based on Epoxidized Hydroxylterminated Polybutadiene （EHTPB） was synthesized with N, Ndi（2hydroxypropyl） aniline（Is） as chain extender and toluene diisocyanate（TDI） as a curing agent. The effects of epoxy val ue of EHTPB, curing time, molar ratio of Is to EHTPB, NCO/OH ratio and filler dosage on the properties of the polyurethane were investigated. The results show that the optimal molar ratio of Is to EHTPB is 1.54 and the best NCO/OH ratio is 2.05. The best a mount of catalyst is 0.075%, the filler dosage of ZnO is 4% and SiO2 is 1.47%. At 70℃, the best cure time is 5 days. Moreover, the, me,chanical properties of polyurethane material prepared with EHTPB are superior to those of material with HTPB.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2014年第1期118-121,共4页
Journal of Solid Rocket Technology
