湿热环境对铝合金接头性能的影响  

Effect of hygrothermal environment on properties of aluminum alloy joint

作　　者：郭进展 范以撒 李善慈 何苗苗 胡雨蒙 李唯 Guo Jinzhan;Fan Yisa;Li Shanci;He Miaomiao;Hu Yumeng;Li Wei(School of Mechanical Engineering,North China University of Water Resources and Electric Power,Zhengzhou 450045,Henan,China;CRFiC Tangshan Co.,Ltd.,Tangshan 064000,Hebei,China)

机构地区：[1]华北水利水电大学机械学院,河南郑州450045 [2]中车唐山机车车辆有限公司,河北唐山064000

出　　处：《中国胶粘剂》2021年第6期56-60,64,共6页China Adhesives

基　　金：国家自然科学基金资助项目(51075187);河南省科技攻关项目(202102210044)。

摘　　要：选择单搭接接头,研究高铁车窗使用胶粘剂的耐候性,分别进行不同循环老化周期耐候性试验,研究不同老化周期对粘接性能的影响。通过对老化前后粘接接头准静态拉伸试验,确定其衰减比率和失效模式,并使用扫描电镜对失效接头断面进行表征。最后使用最小二乘法拟合出剩余强度与老化周期之间的关系曲线。研究结果表明:随着老化时间的增加,粘接强度退化明显,说明环境因素对粘接强度产生巨大影响。The single lap joint was selected to study the weather resistance of the adhesive used for highspeed train windows. The weather resistance test with different cyclic aging cycles was carried out to study the influence of different aging cycles on the bonding performance. Through the quasi-static tensile test of the bonded joint before and after aging,the attenuation ratio and failure mode were determined,and the section of the failed joint was characterized by scanning electron microscope. Finally the least square method was used to fit the relationship curve between residual strength and aging cycle. The research results showed that the bonding strength decreased obviously with the increase of aging time,which indicated that environmental factors had significant impact on the bonding strength.

关 键 词：粘接接头 粘接强度 湿热老化 失效分析 

分 类 号：TQ430.1[化学工程]