Process for coating anti-electromagnetic-interference coating of non-metallic composite material

Abstract

The invention aims to provide a process for coating anti-electromagnetic-interference electromagnetic-shielding paint on the surface of a non-metallic composite material. The process comprises the following steps of: (a) part surface treatment; (b) coating of a resin transition layer; (c) drying; (d) coating of an anti-electromagnetic-interference coating; and (e) curing. Compared with the prior art, the process has the advantage of solving the problems of part deformation caused by overhigh curing temperature of the electromagnetic-shielding paint, poor film-forming performance and adherence performance of the coating, and the like, by the steps of coating one transition layer between the surface of the non-metallic composite material and the anti-electromagnetic-interference coating and then coating the anti-electromagnetic-interference coating on the transition layer; in addition, the part which is treated with the process and made of the non-metallic composite material has the advantages of dense and uniform surface coating, bright coating, and favorable anti-electromagnetic-interference performance.

Description

Technical field [0001] The invention relates to a coating process of an anti-electromagnetic interference electromagnetic shielding paint with a transition layer on the surface of a non-metal composite material. The process proposed by the present invention is to arrange a transition layer between the non-metallic material and the anti-electromagnetic interference electromagnetic shielding paint coating, and then spray the anti-electromagnetic interference electromagnetic shielding paint on the transition layer. The composite parts processed by this process can have excellent anti-electromagnetic interference performance. Background technique [0002] Compared with the traditional metal material structure, the composite material structure is a new type of material structure that integrates materials and processes to achieve the expected performance through the physical combination between the matrix and the reinforcement and the layer design. As a new type of material, composite...

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Problems solved by technology

[0007] Method (b) After the conductive metal film is pasted on the surface of the composite material, the presence of the conductive metal film will affect the fragmentation tendency required for material prefabrication; the conductive metal film itself has low adhesion and is prone to peeling off; the shape of the part is complex, and the surface is covered Conductive metal thin films are very difficult to implement and other technical problems

[0008] Method (c) After spraying the anti-electromagnetic interference and electromagnetic shielding paint on the surface of the material, there are problems such as high curing temperature required by the conductive coating, which causes deformation of the part, poor film-forming property of the coating layer, and poor adhesion of the coating layer.

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