后灯体无底涂镀铝局部发雾的形成机理及改进  

Formation mechanism and improvement for local haze of vacuum-aluminum-plated rear lamp body without primer coating

作　　者：陶永亮[1] 周宗杰 田原 王晓光 郑英杰 TAO Yongliang;ZHOU Zongjie;TIAN Yuan;WANG Xiaoguang;ZHENG Yingjie(Chongqing Chuanyi Engineering Plastic Co.,Ltd.,Chongqing 400712,China;不详)

机构地区：[1]重庆川仪工程塑料有限公司,重庆400712 [2]华域视觉科技(重庆)有限公司,重庆401122 [3]曼德电子电器有限公司保定光电分公司,河北保定071000 [4]重庆嘉利建桥车灯有限公司,重庆402246

出　　处：《电镀与涂饰》2020年第12期744-748,共5页Electroplating & Finishing

摘　　要：发雾是真空镀铝中常见的缺陷之一,一般源于素材表面吸湿。本文描述了后车灯无底涂镀铝中遇到的一个特例。在ABS素材成型加工中,各路熔体汇流到鼻梁表面时形成积气,导致镀铝后发雾。分析了形成积气的原因。通过注塑成型中多项工艺改进,稳定了镀铝工艺,令发雾缺陷得到了较好的控制。Hazy coating is one of the common defects for vacuum aluminum plating,which is generally due to the hygroscopicity of material surface.A special case encountered during primer-free aluminum plating on rear light body was described.Various melts converge to the surface of the bridge during the injection molding of ABS plastic,resulting in the accumulation of gas,therefore a hazy aluminum coating is formed.The causes for the accumulation of gas was analyzed.The aluminum plating process was stabilized through several improvements in molding,and the hazy defect on the aluminized surface was well controlled.

关 键 词：后灯体 丙烯腈-丁二烯-苯乙烯共聚物 镀铝 发雾缺陷 注塑 改进 

分 类 号：TG174.444[金属学及工艺—金属表面处理] TQ320.66[金属学及工艺—金属学]