Housing material for electronic equipment and preparation method thereof

Abstract

The invention discloses a housing material for electronic equipment and a preparation method thereof and relates to the field of electronic equipment materials. The housing material comprises polyvinyl chloride having polymerization degree of 600, thermoplastic polyurethane, modified chopped carbon fiber, polycarbonate, maleic anhydride grafted polypropylene, polymethacrylimide, nano silica, polyamide wax, diphenylamine, calcium-zinc composite stabilizer, an antioxidant, an anti-ultraviolet agent, a foaming agent, and a foam stabilizer. The preparation method of the housing material comprises: drying the materials; conveying part of the materials into an injection molding machine for melting; adding the rest materials after melting; pouring through the injection molding machine, cooling, opening a mold to take a product. The housing material is simple and convenient to prepare and low in cost; the finished housing material has high flame-retardant level and high mechanical strength, can have certain weakening and shielding functions for electromagnetic irradiation generated by electronic equipment, and is suitable for popularization and application.

Description

technical field [0001] The invention relates to the field of electronic equipment materials, in particular to an electronic equipment shell material and a preparation method thereof. Background technique [0002] Today's electronic equipment, taking smart TV as an example, smart TV is moving towards a trend of thinner thickness and larger screen, so the heat generated by smart TV during use is increasing, and the rigidity and heat resistance of the shell material are required also gradually increased. The increase in heat generation and the temperature rise of the shell will cause the shell to deform, reduce the user's appearance experience, and seriously cause safety regulations; on the other hand, the ultra-thin and ultra-narrow design concept requires that the assembly gap between the shell and related components need to be further compressed ( Compression from 0.8mm or even greater to within 0.4mm), the traditional non-fiber-reinforced material back shell shrinks more w...

AI Technical Summary

Problems solved by technology

The increase in heat generation and the temperature rise of the shell will cause the shell to deform, reduce the user's appearance experience, and seriously cause safety regulations; on the other hand, the ultra-thin and ultra-narrow design concept requires that the assembly gap between the shell and related components need to be further compressed ( Compression from 0.8mm or even greater to within 0.4mm), the traditional non-fiber-reinforced material back shell shrinks more with temperature changes, and the strength is further reduced after thinning. The dual factors lead to frequent cracking and other defects in the shell after undergoing environmental tests Phenomenon

In order to solve the cost problem caused by cracking, audio and video electronic equipment generally adopts the back shell of PC+ABS+GF scheme, PC+ABS+GF (is made of polycarbonate and acrylonitrile-butadiene-styrene copolymer The composite material with glass fiber added to the mixed plastic) is a material with high rigidity and low linear expansion coefficient, which can effectively solve the problem of shell cracking, which makes the cost about 18.95 yuan / kg, but the flame retardant grade can only reach UL94V0, which cannot Meet the flame retardant requirements of information technology electronic equipment enclosures

However, the cost of the metal shell used is high and cannot meet the needs of the public; and in the prior art, the shielding effect of the electronic equipment shell on electromagnetic radiation is very small, so it needs to be improved.