基于电气自动化装备的各种不同胶接接头粘接性能研究

Research on the bonding performance of various adhesivejoints based on electrical automation equipment

以6005A铝合金为基材,采用硅烷聚氨酯胶粘剂制备了对接接头、搭接接头和不同角度的嵌接接头,并对哑铃型胶粘剂试样进行了力学性能测试。结果表明,当温度从-40℃升高至80℃时,不同温度下对接接头、搭接接头和嵌接接头的平均失效强度都呈现逐渐减小的特征;在温度60℃及以下时,胶粘剂搭接接头的强度要高于对接接头。将对接接头和搭接接头相比,在温度-40~80℃时,搭接接头的断裂能高于对接接头;从不同角度接头的断裂能分析,15°接头在不同温度下都具有相对较高的断裂能,且此时的断裂能要明显高于对接接头和搭接接头。

Using 6005A aluminum alloy as the base material,butt joints,lap joints and embedded joints at different angles were prepared using silane polyurethane adhesive,and the mechanical properties of dumbbell type adhesive samples were tested.The results showed that when the temperature increased from-40℃to 80℃,the average failure strength of butt joints,lap joints and embedded joints showed a gradual decrease at different temperatures.At temperatures of 60℃and below,the strength of adhesive lap joints was higher than that of butt joints.Comparing the butt joint with the lap joint,the fracture energy of the lap joint was higher than that of the butt joint at the temperature of-40℃to 80℃.The fracture energy of the 15°joint had relatively high breaking energy at different temperatures,and the breaking energy of the 15°joint was significantly higher than that of the butt joint and the lap joint at this time.