摘要
合成了以苯乙炔基封端的系列聚酰亚胺胶黏剂,研究了分子结构、分子量、固化工艺等因素对其耐热和粘接性能的影响规律。结果表明:合成的聚酰亚胺胶黏剂具有优异的耐热和高温粘接性能,对不锈钢试片粘接的剪切强度在316℃下≥10MPa,在400℃下为3MPa。
A series of polyimide adhesives end-capped with phenylethynyl groups were synthesized. The effects of molecular structures, molecular weights and curing conditions on the thermal stabilities and adhesion properties of polymers were investigated. The results indicated that the polyimide adhesives exhibited good thermal stabilities and excellent adhesive properties at elevated temperature, giving the lap shear strength for stainless steel over 10 MPa at 316℃ and as high as 3 MPa at 400℃.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2009年第1期17-21,共5页
Aerospace Materials & Technology
关键词
聚酰亚胺
胶黏剂
耐高温
Polyimide,Adhesive, High-Temperature resistance
