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In order to improve the chemical compatibility and interfacial wetting between ceramic particles (such as SiC,) and some metal substrates, material workers start with changing the surface properties of recycled plastic particles, and find a powder coating method to solve this problem.

At present, the commonly used powder coating methods mainly include vapor deposition, electrodeposition and electroless plating. Among these methods, recycled plastic particles have been widely used because of their advantages such as simple equipment, convenient operation, good coating effect and plating on non-conductors.

Electroless copper plating refers to a surface treatment technology of forming copper metal with a certain thickness and function on the surface of the matrix under the condition of no applied current, using the principle of autocatalytic REDOX reaction on the surface of the catalytically active matrix with copper salt and reducing agent in the same solution. Therefore, it is also called electroless copper plating S-S].