Electromagnetic shielding material and preparation method thereof

A technology of electromagnetic shielding materials and raw materials, applied in the fields of magnetic/electric field shielding, electrical components, etc., can solve the problems of high product price, large equipment investment, complex process, etc., and achieve the effect of wide application, low cost and simple process

Active Publication Date: 2010-08-25
顾德阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its purpose is to attenuate electromagnetic radiation, but its equipment inve

Method used

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  • Electromagnetic shielding material and preparation method thereof
  • Electromagnetic shielding material and preparation method thereof
  • Electromagnetic shielding material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

Example 1

ABS plastic 70kg conductive carbon black 50kg

ABS plasticizer 40kg iron nickel powder 40kg

Carbon fiber 10kg

The preparation method is as follows:

(1) Weigh each raw material according to the formula, first mix the ABS plastic and ABS plasticizer uniformly, and then pretreat it at 80°C for 4h;

(2) Add 200g of liquid dispersant to the pretreated raw material in step 1, and add conductive carbon black, iron nickel powder and carbon fiber after preliminary mixing. After being uniformly mixed by a high-mixer, it is then extruded in a twin-screw extruder at 230°C, and granulated by a granulating agent to make the electromagnetic shielding material of the present invention.

Example Embodiment

Example 2

ABS plastic 32kg conductive carbon black 20kg

ABS plasticizer 20kg nickel zinc powder 16kg

Carbon fiber 3kg

The preparation method is as follows:

(1) Weigh each raw material according to the formula, first mix the ABS plastic and ABS plasticizer uniformly, and then pre-treat, the temperature is 85°C, and the time is 4h;

(2) Add 75g of liquid dispersant to the pretreated raw material in step 1, and add conductive carbon black, nickel zinc powder and carbon fiber after preliminary mixing. After being uniformly mixed by a high-mixer, it is then extruded in a twin-screw extruder at 230°C, and granulated by a granulating agent to make the electromagnetic shielding material of the present invention.

Example Embodiment

Example 3

ABS plastic 70kg conductive carbon black 45kg

ABS plasticizer 42kg iron-nickel powder and nickel-zinc powder mixture 36kg

Carbon fiber 9kg

The preparation method is as follows:

(1) Weigh each raw material according to the formula, first mix the ABS plastic and ABS plasticizer uniformly, and then pre-treat, the temperature is 85°C, and the time is 4h;

(2) Add 110g of liquid dispersant to the pretreated raw material in step 1, add conductive carbon black, iron-nickel powder, nickel-zinc powder mixture, and carbon fiber after preliminary mixing; after mixing uniformly by a high mixer, enter the double It is extruded in a screw extruder at 230°C and granulated by a granulating agent to make the electromagnetic shielding material of the present invention.

Hereinafter, the effect of the electromagnetic shielding material of Example 1 of the present invention will be described through comparative experiments.

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Abstract

The invention relates to a chemical material, in particular to an electromagnetic shielding material and a preparation method thereof. The preparation method of the electromagnetic shielding material comprises the following steps of: after mixing, heating and preprocessing ABS plastics and an ABS plasticizer, adding conductive carbon black, magnetic powder and carbon fibre, mixing evenly by a high mixing machine, then delivering into a twin-screw extruder, extruding and granulating so as to prepare the electromagnetic shielding material; and the invention has favorable effect of preventing the radiation of electromagnetic waves and can be applied to the fields of electric power, wireless communication, household appliances and military affairs. The invention has extensive application, simple process and low manufacturing cost and can be recycled.

Description

technical field The invention relates to a chemical material, in particular to an electromagnetic shielding material and a preparation method thereof. Background technique With the improvement of living standards, more and more electrical products have entered the family. These electrical appliances will more or less produce electromagnetic radiation. Electromagnetic radiation exceeding 2 milligauss will cause people to suffer from diseases. Thermal effects, non-thermal effects and cumulative effects on the human body have caused more and more people in a modern sub-health state. The radiation pollution of household appliances should get more and more attention. At present, most of the electromagnetic shielding materials used at home and abroad are made of metal materials. Its purpose is to attenuate electromagnetic radiation, but its equipment investment is large, the process is complicated, and the product price is too high. Contents of the invention The purpose of t...

Claims

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Application Information

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IPC IPC(8): C08L55/02C08K13/04C08K3/04C08K7/06C08K3/08H05K9/00
Inventor 顾德阳
Owner 顾德阳
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