Decorative plastic surface vacuum-coating film preparation method

Abstract

The invention discloses a method for preparing a decorative plastic surface vacuum-coating film having effects of electromagnetic radiation resistance, static conduction, hardness improvement, color adjustment, wear resistance and worm damage resistance. The method comprises the following steps of a, cleaning the plastic surface and carrying out flattening treatment, b, sealing the plastic surface by an amino airtight resin, c, putting the plastic into a cleaning tank containing diluted acid or diluted alkali, carrying out cleaning and carrying out drying, and d, carrying out film vacuum-coating on the dried plastic surface so that metal is deposited on the plastic surface and forms a continuous and uniform film containing the metal and metal oxides. The plastic product material obtained by the method has electromagnetic shielding effectiveness above 30dB in a frequency band of 30MHz to 1.5GHz and satisfies electromagnetic shielding and static conduction requirements. The method has simple and feasible processes, is environmentally friendly and efficient, can be used at a low temperature and is suitable for industrial large-scale production. Through the film, a plastic surface color can be adjusted according to demands and plastic surface hardening, corrosion resistance, wear resistance and good appearance are realized. The method greatly broadens plastic purposes, improves a plastic grade and realizes efficient plastic utilization.

Description

technical field [0001] The invention relates to a plastic and metal composite material, in particular to a plastic surface coated with a layer of metal film to make it anti-electromagnetic radiation, static electricity, hardening, color matching, wear-resistant, insect-resistant, decorative A manufacturing method for vacuum coating on plastic surfaces. Background technique [0002] Plastics are metallized, so that the plastic has antistatic and electromagnetic shielding functions, and at the same time has the functions of hardening, color matching, wear resistance, decoration, and optics, so that the plastic has some characteristics of metal in its original properties. Coating on the surface of inferior plastics can also improve the grade of plastics and achieve efficient use of plastics. Metal plastics have been widely used in some developed countries, such as aerospace, electronics, construction and other fields. The United States and Germany began to study metal plastic...

AI Technical Summary

Problems solved by technology

The United States and Germany began to study metal plastics since the 1920s, mainly to metallize certain plastic parts of weapons to enhance their strength, wear resistance, and improve the service life of parts; in the 1960s, The United States has intensified research on metal plastics, metal-treated plastic fibers, mixed plastics with metal powder or carbon fibers, deposited plastics and metal sheets, and impregnated the interior of plastics with metals. The process level has been greatly improved compared to before. Some achievements were gradually applied in the 1970s and 1980s; however, the homogeneity of the material was poor, the performance was unstable, the degree of industrialization was low, and the electromagnetic shielding effect of the product was not very good

Japan mainly conducts electrolyte plating on plastics, which is prone to environmental pollution. my country’s research on plastic metals mainly uses metal mesh or wires to be inserted into plastics and pressed into panels. The product has poor homogeneity, unstable performance, and the industrialization effect is not very good