激光清洗对铝导体绝缘涂层附着力的影响研究  

Effect of Laser Cleaning on Adhesion of Aluminum Conductor for Insulation Coating

作　　者：袁田 王昱晴 龚宇佳 童悦 张锦 YUAN Tian;WANG Yuqing;GONG Yujia;TONG Yue;ZHANG Jin(China Electric Power Research Institute,Wuhan 430074,China)

机构地区：[1]中国电力科学研究院有限公司,湖北武汉430074

出　　处：《绝缘材料》2022年第4期103-108,共6页Insulating Materials

基　　金：中国电力科学研究院创新基金(SZ83-19-005)。

摘　　要：为解决输变电设备导体绝缘化时铝导线表面附着力较小问题,本文详细阐述导体绝缘化涂层的附着机理,对激光清洗实验理论及方法展开分析。通过实验研究激光清洗次数对粗糙度的影响,并对测量附着力的拉开法和剪切法进行对比分析。结果表明:多次清洗后金属表面粗糙度Ra明显降低,且第1次清洗效果与脉冲激光器单位区域覆盖能量成正比,但在Ra达到2.5μm时,清洗效果开始减缓;粗糙度降低可有效提高绝缘涂层表面的附着力,当环氧树脂在铝板表面粗糙度Ra达到4.5μm,硅橡胶在铝板表面粗糙度Ra达到4.0μm时,附着力开始出现再次下降。In order to solve the problem of small adhesion on the surface of aluminum wire during insulating for conductor in transmission and transformation equipment,the adhesion mechanism of conductor insulation coating was described in detail,and the experimental theory and method of laser cleaning were analyzed.The effect of laser cleaning times on the roughness was studied by experiments,and then pull method and shear method for measuring adhesion were compared and analyzed.The results show that the surface roughness Ra decreases significantly after cleaning for many times,and the first cleaning efficiency is proportional to the coverage energy per pulse area.However,when Ra reaches to 2.5μm,the cleaning effect begins to slow down.The reduction of roughness can effectively improve the adhesion of the insulating coating surface,the adhesion of epoxy resin and silicone rubber on aluminum plate begins to decrease again when the surface roughness R_(a)reaches to 4.5μm and 4.0μm,respectively.

关 键 词：附着力 激光清洗 膜层屈曲 绝缘涂层 金属导体 

分 类 号：TM215[一般工业技术—材料科学与工程]