采用两苯酐间连接不同桥基的几种二元酐 ,与二元胺经溶液共聚合成共聚酰胺酸 ,两种不同结构的共聚酰胺酸共混再配加适量酚醛树脂 ,制成棕黄色透明粘稠应变胶。用其胶膜在不同温度下进行热亚胺 (固 )化反应 ,测试了形成的半互穿聚合物网络的粘接、蠕变等性能 ,其中粘结力和抗蠕变性突出。制成的箔式电阻应变计 ,经老化和蠕变测试达到并超过国家标准的高等级指标。 Several dibasic anhydrides with different bridging groups were connected by diphthalic anhydride, copolymerized with diamines to form copolyamides. Copolyamides with two different structures were blended with the appropriate amount of phenolic resin to make brown-yellow transparent and viscous Thick strain adhesive. With its film at different temperatures, thermal imine (solid) reaction, the formation of the semi-interpenetrating polymer network adhesion, creep and other properties, including adhesive force and creep resistance prominent. Made of foil resistance strain gauge, the aging and creep test to meet and exceed the national standard of high-grade indicators.