GAP/环氧化合物体系胶片的制备与性能表征  

Preparation and properties of GAP / epoxide curing system

作　　者：郑启龙[1] 周伟良[1] 肖乐勤[1] 菅晓霞[1] 

机构地区：[1]南京理工大学化工学院,南京210094

出　　处：《固体火箭技术》2016年第4期497-502,共6页Journal of Solid Rocket Technology

摘　　要：为探索一种新型非异氰酸酯固化体系,以端羟基聚叠氮缩水甘油醚(GAP)为研究对象,三羟甲基丙烷三缩水甘油醚(TMPTGE)为固化剂,通过实验筛选出六亚甲基四胺(HA)为固化催化剂,对GAP/TMPTGE/HA固化体系进行了研究。通过拉伸试验、DMA试验,研究了固化参数R和固化时间对GAP/TMPTGE胶片力学性能的影响,借助非等温DSC法,研究了GAP/TMPTGE/HA体系的固化动力学特征,并通过TG实验对胶片热性能进行了表征。结果表明,随着固化参数R的增大,胶片的断裂伸长率先增加后降低,拉伸强度不断增大;R=3.0时,胶片断裂伸长率达到最大值98%,此时拉伸强度为0.67 MPa,玻璃化转变温度为-34.8℃;胶片热分解分为2个阶段,对应的分解峰温分别为250℃和350℃。Glycidyl azide polymer（ GAP） was cured by trimethylolpropane triglycidyl ether（ TMPTGE） in the presence of a tertiary amine catalyst（ HA）. The effects of R and cure time on the mechanical properties of the GAP / TMPTGE film were characterized by tensile test and DMA. The kinetic characteristics of this curing reaction were studied thoroughly by means of DSC,and thermal properties were studied by TG. The results indicate that the breaking elongation of the film increases at first then decreases and the tensile strength increases straightly with the increase of the R. When R is 3.0,the breaking elongation of the film is 98%,the tensile strength is 0.67 MPa and the glasstransition temperature of the film is-34.8 ℃. The TG experimental results show that the decomposition of cured film can be divided into two steps,the decomposition peak temperatures of which are 250 ℃ and 350 ℃ respectively.

关 键 词：聚叠氮基缩水甘油醚 环氧化合物 力学性能 热性能 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]