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Electromagnetic shielding material for power supply equipment and preparation method thereof

A technology of electromagnetic shielding materials and power supply equipment, which is applied in the fields of magnetic field/electric field shielding, electrical components, textiles and papermaking, etc. It can solve the problems of restricting the application of electromagnetic shielding materials, affecting the effect of electromagnetic shielding, and the metal coating is easy to fall off, etc., to achieve good production Prospects, realization of weight reduction and corrosion resistance, effects of overcoming peeling of metal plating

Inactive Publication Date: 2018-07-24
HEFEI SHANGQIANG ELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most electromagnetic shielding materials made of metal materials have the disadvantages of heavy weight, no corrosion resistance, difficult processing, and high price; while electronic shielding materials made of metal coatings have cumbersome coating processes and are likely to cause environmental pollution, etc. At the same time, the metal coating is easy to fall off during use and thus affects the electromagnetic shielding effect, which restricts the further application of electromagnetic shielding materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An electromagnetic shielding material for power equipment, comprising the following raw materials in parts by weight: 48 parts of plant fiber, 35 parts of auxiliary filler, 27 parts of polycarbonate, 12 parts of oxidizing agent, 16 parts of toughening agent, 12 parts of dispersing agent, 13 parts of joint agent and 8 parts of acid solution.

[0028] A method for preparing an electromagnetic shielding material for power equipment, comprising the following preparation steps:

[0029] a. After the plant fiber is boiled at high temperature, the temperature is 100°C, boiled for 10 minutes, and then degummed, then soaked in acid solution for 35 minutes, washed until neutral, and then dried at 80°C, Obtain modified fiber;

[0030] b. Mix the modified fibers and auxiliary fillers and put them in a ball mill for ball milling for 2 hours, then add polycarbonate to stir and heat, the stirring speed is 300r / min, the heating temperature is 80°C, and the time is 15min, to obtain the...

Embodiment 2

[0041] An electromagnetic shielding material for power equipment, comprising the following raw materials in parts by weight: 45 parts of plant fiber, 32 parts of auxiliary filler, 18 parts of polycarbonate, 12 parts of oxidant, 11 parts of toughening agent, 16 parts of dispersant, 15 parts of joint agent and 13 parts of acid solution.

[0042] A method for preparing an electromagnetic shielding material for power equipment, comprising the following preparation steps:

[0043] a. After the plant fiber is boiled at high temperature, the temperature is 100°C, boiled for 10 minutes, and then degummed, then soaked in acid solution for 35 minutes, washed until neutral, and then dried at 60°C, Obtain modified fiber;

[0044] b. Mix the modified fibers and auxiliary fillers and place them in a ball mill for ball milling for 2 hours, then add polycarbonate to stir and heat, the stirring speed is 300r / min, the heating temperature is 60°C, and the time is 10min, to obtain the mixture 1;...

Embodiment 3

[0055] An electromagnetic shielding material for power equipment, comprising the following raw materials in parts by weight: 43 parts of plant fiber, 31 parts of auxiliary filler, 23 parts of polycarbonate, 12 parts of oxidizing agent, 15 parts of toughening agent, 16 parts of dispersing agent, 15 parts of joint agent and 11 parts of acid solution.

[0056] A method for preparing an electromagnetic shielding material for power equipment, comprising the following preparation steps:

[0057] a. After the plant fiber is smelted at high temperature, the temperature is 100°C, simmered for 15 minutes, and then degummed, then soaked in an acid solution for 45 minutes, washed until neutral, and then dried at 80°C, Obtain modified fiber;

[0058] b. Mix the modified fibers and auxiliary fillers and place them in a ball mill for ball milling for 3 hours, then add polycarbonate to stir and heat, the stirring speed is 400r / min, the heating temperature is 80°C, and the time is 15min, to o...

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PUM

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Abstract

The invention provides an electromagnetic shielding material for power supply equipment and a preparation method thereof. The electromagnetic shielding material is prepared from the following components: plant fibers, an auxiliary filler, polycarbonate, an oxidant, a flexibilizer, a dispersant, a coupling agent and an acid solution. The electromagnetic shielding material prepared by the method provided by the invention is wide in shielding range, high in shielding efficiency, and cheap and easily available in raw materials, and the preparation method is simple in operation, low in process condition requirement and low in production cost, and has a good large-scale production prospect.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic shielding materials, and in particular relates to an electromagnetic shielding material used for power supply equipment and a preparation method thereof. Background technique [0002] With the advancement of science and technology and the rapid development of electronic and electrical technology, power supply equipment such as electronic communication products have been more and more widely used in industry and daily life, making the space full of electromagnetic waves of different wavelengths and frequencies, these electromagnetic waves will interfere The normal use of electronic products has become a new environmental pollution - electromagnetic interference. Although these power supply equipment can bring convenience to people's life, there is a certain amount of electromagnetic radiation, which can not only interfere with the normal operation of other equipment, but also endanger human...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/02C08L97/02C08L69/00C08L23/06C08L83/04C08K13/06C08K9/10C08K3/04C08K7/20C08K5/20C08K5/103D06M11/64D06M11/38D06M11/50H05K9/00D06M101/06D06M101/04
CPCC08L1/02C08K2201/001C08L97/02C08L2203/20C08L2205/025C08L2205/035C08L2205/16D06M11/38D06M11/50D06M11/64D06M2101/04D06M2101/06H05K9/0081C08L69/00C08L23/06C08L83/04C08K13/06C08K9/10C08K3/04C08K7/20C08K5/20C08K5/103
Inventor 程劲松
Owner HEFEI SHANGQIANG ELECTRIC TECH CO LTD
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