A kind of preparation method of casing material of electronic equipment

Abstract

The invention relates to a method for preparing an electronic equipment enclosure material and belongs to the technical field of electromagnetic shielding. Aiming at the problems in the traditional enclosure material that the carbon material is low in electric capacity, few in surface active groups and low in dispersity, secondary emission noise waves and high-frequency electromagnet waves cannot be effectively inhibited and the shielding effectiveness is low, the invention provides a method for preparing the electronic equipment enclosure material. The preparation method comprises the following steps: performing in-situ chemical polymerization on aniline so as to synthesize polyaniline coated carbon nano tubes; performing carbonizing treatment so as to prepare nitrogen-doped carbon nano tubes, and obtaining nitrogen-doped carbon nano tubes which take the carbon nano tubes as cores and nitrogen-doped carbon layers as shells and have high electric capacity and core-shell structures; compounding with an aluminum matrix so as to obtain an aluminum-adsorbed nitrogen-doped carbon nano tube composite material; finally, mixing with a polyamide resin nylon 6 and the like, performing melting granulation, and performing injection molding, so as to obtain the electronic equipment enclosure material.

Description

technical field [0001] The invention relates to a preparation method of an electronic equipment casing material, belonging to the technical field of electromagnetic shielding. Background technique [0002] With the advent of the information age, various electronic and electrical equipment are widely used. In order to establish a high-speed communication network, the operating frequency of digital systems is increasing day by day. The resulting electromagnetic interference will not only cause harm to the human body and the natural environment, but also have adverse effects on electronic equipment, especially high-power high-frequency equipment, which will affect nearby electronic equipment, precision instruments, communication signals, parameter tests, etc. With the rapid development of electronic technology, people are passively or actively exposed to more and more electromagnetic radiation in daily life. Scientific research shows that electromagnetic radiation will have an...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the carbon material in the traditional casing material, the capacitance is small, the surface active groups are few, the dispersion is poor, the secondary emission clutter, high-frequency electromagnetic wave cannot be effectively suppressed, and the shielding efficiency is low. The invention provides a method for preparing a casing material of an electronic device. Aniline is in-situ chemically polymerized to synthesize polyaniline-coated carbon nanotubes, and then carbonized to prepare nitrogen-doped carbon nanotubes to obtain carbon nanotubes as cores. The nitrogen-doped carbon layer is the shell, which has a large capacitance, and the nitrogen-doped carbon nanotubes with a core-shell structure are combined with an aluminum matrix to prepare an aluminum-adsorbed nitrogen-doped carbon nanotube composite material, and finally combined with a poly Amide resin, nylon 6, etc. are blended, melted and granulated, and injection molded to make electronic equipment casing materials