摘要
客诉某乘用车在使用一段时间后,排挡面板电镀饰框的镀层发生鼓泡。运用显微镜、电子计算机断层扫描(CT)、扫描电镜(SEM)以及冰醋酸化学内应力测试法对其进行研究。结果表明,在注塑过程中的冷料导致了塑料基材在粗化过程中局部无法生成铆定作用的孔洞,随后电镀的铜层虽然完整,但与基材的结合力弱。通过弃用冷料基材,采用升温到额定温度的基材,可保证产品质量。
The blistering of the coating electroplated on the decorative frame of the gear panel was complained by the customers after their use of a passenger car for a short period.The failure part was examined by using microscope,computed tomography(CT)scanner,and scanning electron microscope(SEM),and its internal stress was tested chemically by using glacial acetic acid.The results showed that the plastic substrate produced by injection molding at low temperature of mold fails to effectively generate the holes for anchoring a coating at local areas during the roughening process,resulting in a poor adhesion of copper coating electroplated subsequently even though it is entirely covered on the substrate.By abandoning the substrate injection-molded at too low temperature and using the substrate injection-molded at the required temperature,the product quality can be guaranteed.
作者
虞莲雯
YU Lianwen(SAIC Motor Passenger Vehicle Co.,Ltd.,Shanghai 201804,China)
出处
《电镀与涂饰》
CAS
北大核心
2021年第15期1168-1172,共5页
Electroplating & Finishing
关键词
塑料基材
电镀层
鼓泡
注塑
模具温度
故障处理
plastic substrate
electroplated coating
bubbling
injection molding
mold temperature
troubleshooting
