环氧胶膜对聚四氟乙烯薄片和铝合金胶接研究  

Research on bonding of polytetrafluoroethylene thin sheet and aluminum alloy by epoxy adhesive film

作　　者：杨海冬[1] 王帅[2] 王德志[1] 李洪峰[1] 肖万宝 赵立伟[1] 曲春艳[1] 康文双 Yang Haidong;Wang Shuai;Wang Dezhi;Li Hongfeng;Xiao Wanbao;Zhao Liwei;Qu Chunyan;Kang Wenshuang(Institute of Petrochemistry Heilongjiang Academy of Sciences,Harbin 150080,Heilongjiang,China;China Academy of Launch Vehicle Technology,Beijing 100076,China)

机构地区：[1]黑龙江省科学院石油化学研究院,黑龙江哈尔滨150080 [2]中国运载火箭技术研究院,北京100076

出　　处：《中国胶粘剂》2022年第10期17-22,共6页China Adhesives

基　　金：黑龙江省自然科学基金项目(TD2020E003)。

摘　　要：对新型环氧芳胺结构胶膜进行了固化工艺、耐热性能及微观形貌的研究。研究结果表明:该胶膜的玻璃化转变温度(tanδ法)约为202℃,TGA曲线表明固化后的胶膜质量损失5%的温度约为372℃,DTG曲线表明胶膜的最快热失重速率约为400℃;扫描电镜照片显示,胶膜断面呈现韧性破坏模式。用此胶膜开展了耐磨型聚四氟乙烯薄片和铝合金的胶接研究,分析了固化时间、压力及铝合金表面处理方法对二者胶接强度的影响。研究结果表明:当采用固化工艺为180℃/3 h、压力为0.3 MPa时,耐磨型聚四氟乙烯薄片和铝合金胶接强度较佳,常温(23℃)剪切强度为12.7 MPa,高温(177℃)剪切强度为5.6 MPa;该胶膜在航空发动机上具有潜在的应用价值。The curing process,heat resistance and microscopic morphology of the new epoxy-arylamine structural adhesive film were studied.The research results showed that the glass transition temperature(tanδmethod)of the adhesive film was about 202℃.The TGA curve showed that the temperature of 5%mass loss of cured adhesive film was about 372℃,and the DTG curve showed that the fastest thermal weight loss rate of adhesive film was about 400℃.Scanning electron microscopy photos showed that the fracture surface of adhesive film was ductile failure mode.The adhesive film was used to study the bonding of wear-resistant polytetrafluoroethylene thin sheet and aluminum alloy.The effects of curing time,pressure and surface treatment of aluminum alloy on bonding strength of them were analyzed.The research results showed that when the curing process was 180℃/3 h and the pressure was 0.3 MPa,the bonding strength of wear resistant polytetrafluoroethylene thin sheet and aluminum alloy was relatively good,the shear strength was 12.7 MPa at room temperature(23℃)and 5.6 MPa at high temperature(177℃).The adhesive film had potential application value in aeroengine.

关 键 词：耐磨型聚四氟乙烯薄片 铝合金 耐热性能 胶接强度 

分 类 号：TQ437.9[化学工程]