the introduction EMI electromagnetic shielding materials
Electromagnetic shielding material
According to the electromagnetic shielding materials mainly include three categories: 1) Metal: directly choose metal materials, such as beryllium copper, stainless steel; 2) Filler: a certain proportion of conductive filler is added to the non-conductive substrate to make the material conductive. The substrate can be made of silica gel, plastic and other materials. The conductive filler can be metal sheet, metal powder, metal fiber or metallized fiber. 3) Surface coating and conductive coating: electroplating the substrate. Common preparation methods include chemical gold plating, vacuum spraying, sputtering, metal melting and foil coating.