材料期刊网

为将金属沉积在聚合材料表面,这种金属必须是可以被沉积在某处(而非它处),而且金属是附着其上的.希腊哲学家柏拉图甚至也曾谈及这种结合问题.今天,我们已经对影响结合力的因素有所了解,虽然其中大部分还没有得到定量数据.从实验数据可以看出,静电力的影响最大.根据被镀聚合材料的性质,采取特殊的前处理使塑料容易接受电镀过程的第一步,而且使塑料表面与金属间形成有效的结合.虽然有时需要使用如硫酸、铬酸等强腐蚀性的方法处理聚合材料表面,但人们早就开始了探索危害小的环保体系.

Depositing metal onto a polymer surface requires that the metal is able to be deposited there (and nowhere else) and that it adheres. Even the Greek philosopher Plato wrote about adhesion. Today, we know about the factors influencing adhesion although we mostly are not able to get quantitative data. From experiments we can see that electrostatic forces have the greatest influence. Depending on the nature of the polymers to be plated, special pretreatment is therefore necessary to make a plastic′s surface receptive for the first plating step and help to achieve sufficient adhesion between surface and metal. While sometimes quite aggressive methods like chromosulphuric acid are necessary to attack the polymer surface, looking for less dangerous and environmentally friendly systems has started long time ago.