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近年来,随着电子工业的发展,电路越来越复杂、精密。为了防止电磁波的干扰和辐射,最有效的方法是:用导电材料屏蔽,以排除电磁波的干扰。以往是采用金属材料,现在逐渐采用导电塑料。导电塑料一般由以下几种方法制成:1.塑料与金属粉末、碳黑等导电填料复合;2.用电镀、喷镀等方法在塑料表面镀覆金属;3.在塑料表面涂覆导电涂料。本文介绍的属第一种方法,即先用金属镍粉包覆云母粒子,然后与聚乙烯、
In recent years, with the development of electronic industry, the circuit is more and more complex and sophisticated. In order to prevent interference and radiation of electromagnetic waves, the most effective method is: shielding with conductive materials to exclude the interference of electromagnetic waves. In the past is the use of metal materials, and now gradually using conductive plastic. Conductive plastic generally made by the following methods: 1. Plastic and metal powder, carbon black and other conductive filler compound; 2. Plating, plating and other methods of plating the surface of the plastic coating of plastics; 3. Coating of plastic surface conductive coating . This article describes the first method, that is, first coated with metal nickel powder mica particles, and then with polyethylene,