| 摘要 |
A method of producing an adherent metallic film for a thermoplastic or thermoset polymeric substrate to provide radio frequency shielding of electromagnetic interference. The polymeric substrate is prepared for application of the metallic film by application of a primer. The primer is an organic-based coating having a dispersion of silica gel to enhance the microscopic surface area and improve adhesion. The silica gel has an average particle size of approximately 20 microns and forms 2-10% of the mixture by weight. A catalyst may be added to the primer to promote curing. The metallic film is preferably zinc and may be applied by either flame or arc spraying technique, or electroless plating of the primed surface.
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