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Electromagnetic shielding material used for power supply equipment, and preparation method thereof

A technology for electromagnetic shielding materials and power supply equipment, applied in the fields of magnetic field/electric field shielding, electrical components, etc., can solve the problem that the anti-electromagnetic interference ability cannot meet the application requirements, and achieve the effect of simple preparation method and excellent shielding performance

Active Publication Date: 2016-10-12
东莞市华卓电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous improvement of power supply equipment, especially switching power supply, switching frequency and switching speed, the requirements for anti-electromagnetic shielding are becoming more and more stringent. However, the anti-electromagnetic interference ability of ordinary electromagnetic shielding materials or shields cannot meet this increasing more stringent application requirements

Method used

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  • Electromagnetic shielding material used for power supply equipment, and preparation method thereof

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Effect test

Embodiment 1

[0020] An electromagnetic shielding material for power equipment, prepared from the following raw materials in parts by weight: 40 parts of POM, 35 parts of EVA, 18 parts of neoprene, 12 parts of polyaniline, 10 parts of conductive filler, 5 parts of aluminum sulfate, ten parts 4 parts of brominated diphenyl ether, 8 parts of diethyl phthalate, 5 parts of methyl silicone oil, 28 parts of ethanol, 2 parts of coupling agent;

[0021] The conductive filler is a mixture of molybdenum powder, nano gadolinium trioxide, zinc powder, aramid fiber and indium tin oxide powder in a weight ratio of 4:1:2:3:1. The coupling agent is dodecyltrimethoxysilane.

[0022] The preparation method of the above-mentioned electromagnetic shielding material for power equipment is characterized in that it comprises the following steps:

[0023] 1) Mix and stir the conductive filler, methyl silicone oil, coupling agent and ethanol at 86°C for 90 minutes;

[0024] 2) Then add POM, EVA, polyaniline, and ...

Embodiment 2

[0027] An electromagnetic shielding material for power equipment, prepared from the following raw materials in parts by weight: 55 parts of POM, 42 parts of EVA, 24 parts of neoprene, 18 parts of polyaniline, 15 parts of conductive filler, 8 parts of aluminum sulfate, ten parts 6 parts of brominated diphenyl ether, 11 parts of diethyl phthalate, 7 parts of methyl silicone oil, 35 parts of ethanol, 3.5 parts of coupling agent;

[0028] The conductive filler is a mixture of molybdenum powder, nano gadolinium trioxide, zinc powder, aramid fiber and indium tin oxide powder in a weight ratio of 4:1:2:3:1. The coupling agent is distearoyloxy isopropoxy aluminate.

[0029] The preparation method of the above-mentioned electromagnetic shielding material for power equipment is characterized in that it comprises the following steps:

[0030] 1) Mix and stir the conductive filler, methyl silicone oil, coupling agent and ethanol at 86°C for 90 minutes;

[0031] 2) Then add POM, EVA, pol...

Embodiment 3

[0034] An electromagnetic shielding material for power equipment, prepared from the following raw materials in parts by weight: 70 parts of POM, 50 parts of EVA, 30 parts of neoprene, 24 parts of polyaniline, 20 parts of conductive filler, 12 parts of aluminum sulfate, decabromo 8 parts of diphenyl ether, 14 parts of diethyl phthalate, 10 parts of methyl silicone oil, 45 parts of ethanol, 5 parts of coupling agent;

[0035] The conductive filler is a mixture of molybdenum powder, nano gadolinium trioxide, zinc powder, aramid fiber and indium tin oxide powder in a weight ratio of 4:1:2:3:1. The coupling agent is a mixture of perfluorodecyltrichlorosilane and distearoyloxyisopropoxyaluminate, and the weight ratio of the two is 4:3.

[0036] The preparation method of the above-mentioned electromagnetic shielding material for power equipment is characterized in that it comprises the following steps:

[0037] 1) Mix and stir the conductive filler, methyl silicone oil, coupling age...

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Abstract

The invention provides an electromagnetic shielding material used for power supply equipment, and a preparation method thereof. The electromagnetic shielding material is prepared from, by weight, POM, EVA, chloroprene rubber, polyaniline, a conductive filler, aluminum sulfate, decabromodiphenyl ether, diethyl phthalate, methylsilicone oil, ethanol and a coupling agent. The electromagnetic shielding material prepared in the invention has the advantages of excellent shielding performance, high strength and excellent performances, and the preparation method has the advantages of easily available raw materials, simplicity, and suitableness for industrial large-scale production.

Description

technical field [0001] The invention relates to the field of magnetic shielding materials, in particular to an electromagnetic shielding material for power supply equipment and a preparation method thereof. Background technique [0002] With the increasing popularity of electronic, electrical and information technology, the intensity, time and complexity of electromagnetic radiation that people are exposed to are increasing. Electromagnetic radiation has become the fourth largest pollution after air pollution, water pollution and noise pollution. As people pay more and more attention to health, in order to reduce and avoid various hazards caused by electromagnetic radiation, the requirements for anti-electromagnetic shielding performance of electronic and power supply equipment products are getting higher and higher. [0003] Electromagnetic shielding materials can absorb, reflect, and reduce energy consumption to a certain extent for external interference electromagnetic w...

Claims

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Application Information

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IPC IPC(8): C08L59/00C08L23/08C08L11/00C08L79/02C08L77/10C08K13/02C08K3/08C08K3/22C08K3/30C08K5/06
CPCC08K2003/0893C08K2003/221C08K2201/001C08K2201/011C08L59/00C08L2205/035C08L2205/16H05K9/0083C08L23/0853C08L11/00C08L79/02C08L77/10C08K13/02C08K3/08C08K2003/2231C08L83/04C08K3/22C08K5/12
Inventor 蔡小连
Owner 东莞市华卓电子科技有限公司
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