端乙酸酯基GAP的合成与性能研究

Synthesis and Performance of Acetate-Terminated Glycidyl Azide Polymer

以1,4-丁二醇为引发剂,三氟化硼乙醚络合物为催化剂,使环氧氯丙烷发生开环聚合制得环氧氯丙烷均聚物(PECH),PECH经叠氮化形成端羟基叠氮基缩水甘油醚聚合物(GAP),然后再以1-甲基咪唑为催化剂,用乙酸酐将GAP酯化成端乙酸酯基GAP(ETGAP)。用FT-IR、DSC等方法研究了ETGAP的结构和性能。ETGAP的玻璃化转变温度为-65.36℃,热分解温度为251.02℃,黏度小,可用作含能增塑剂。

Polyepichlorohydrin（PECH） was synthesized by the opening-ring polymerization ofepichlorohydrin using 1,4-butanediol as initiator, boron-trifluoride etherate as catalyst. Hydroxyl-terminated glycidyl azide polymer（GAP） was synthesized by azidation of PECH, and then acetate-terminated glycidyl azide polymer（ETGAP） was obtained by the reaction of GAP with acetic anhydride using 1-methyl imidazole as catalyst. The structure and performance of ETGAP were studied by FTIR and DSC. The ETGAP glass transition temperature is -65.36 ℃, thermal temperature is 251.02 ℃, viscosity is low, and ETGAP can be used as energetic plasticizer.