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Electromagnetic wave shielding material and preparation method thereof

A technology of shielding materials and electromagnetic waves, applied in the fields of magnetic field/electric field shielding, electrical components, etc., can solve the problems of unbalanced shielding performance and cost of electromagnetic wave shielding materials, low cost, etc., and achieve the effect of low cost, satisfactory quality and good conductivity

Active Publication Date: 2021-01-01
深圳市风采新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the problem that the shielding performance and cost of electromagnetic wave shielding materials in the prior art cannot be balanced, the first purpose of this application is to provide an electromagnetic wave shielding material with good electromagnetic shielding effect and low cost

Method used

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  • Electromagnetic wave shielding material and preparation method thereof

Examples

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preparation example 1

[0079] Fe 3+ Yb 3+ The preparation method of modified graphite is as follows:

[0080] Dissolve 30g of ferric nitrate and 0.558g of ytterbium nitrate in water, then add 300g of graphite oxide powder to the above mixed solution, dry and grind to obtain FeYb / graphite oxide composite; then slowly raise the temperature of FeYb / graphite oxide composite to 300- After 400℃, H 2 , at H 2 Medium reduction treatment for 8-12h to obtain Fe 3+ Yb 3+ modified graphite.

preparation example 2

[0082] Fe 3+ Yb 3+ The preparation method of modified graphite is as follows:

[0083] Dissolve 25g of ferric nitrate and 0.372g of ytterbium nitrate in water, then add 300g of graphite oxide powder to the above mixed solution, dry and grind to obtain FeYb / graphite oxide composite; then slowly raise the temperature of FeYb / graphite oxide composite to 300- After 400℃, H 2 , at H 2 Medium reduction treatment for 8-12h to obtain Fe 3+ Yb 3+ modified graphite.

preparation example 3

[0085] Fe 3+ Yb 3+ The preparation method of modified graphite is as follows:

[0086] Dissolve 20g of ferric nitrate and 0.248g of ytterbium nitrate in water, then add 300g of graphite oxide powder to the above mixed solution, dry and grind to obtain FeYb / graphite oxide composite; then slowly raise the temperature of FeYb / graphite oxide composite to 300- After 400℃, H 2 , at H 2 Medium reduction treatment for 8-12h to obtain Fe 3+ Yb 3+ modified graphite.

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Abstract

The invention discloses an electromagnetic wave shielding material and a preparation method thereof, and belongs to the technical field of electromagnetic wave shielding. The shielding material comprises, in parts, by weight, 60-70 parts of 8289 type unsaturated polyester resin, 30-40 parts of 8955 type low-shrinkage resin, 1-2 parts of a curing agent, 0.2-0.3 part of a polymerization inhibitor, 0.4-0.6 part of a coupling agent, 5-7 parts of a solvent, 4-6 parts of graphene, 200-300 parts of graphite, 4-6 parts of a release agent, and 20-40 parts of chopped carbon fibers. The preparation method comprises the following steps: firstly, mixing the 8289 type unsaturated polyester resin and the 8955 type low-shrinkage resin to obtain resin paste; then mixing graphene and graphite to obtain a powder material, and mixing the resin paste with the powder material to obtain a mixture paste; and finally, adding the chopped carbon fibers into the mixture paste to obtain the electromagnetic wave shielding material. The electromagnetic wave shielding material is good in electromagnetic shielding effect, low in cost and small in overall self-weight, and the conductivity can be flexibly adjusted.

Description

technical field [0001] The present application relates to the technical field of electromagnetic wave shielding, in particular to an electromagnetic wave shielding material and a preparation method thereof. Background technique [0002] As a carrier of information, electromagnetic waves can be used in communication, radio, television and other fields. At the same time, they can also be used in radar, navigation, remote sensing and telemetry as a means of exploring the unknown material world, which is of great significance to the development of human civilization and society. With the development of science and technology, more and more applications of electromagnetic waves have been discovered, but electromagnetic waves also bring pollution to the environment while benefiting human beings. Electromagnetic waves have become another major pollution problem after air pollution, noise pollution and water pollution. , although the impact of electromagnetic waves on the environmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08L63/10C08L79/04C08K13/06C08K9/02C08K7/06C08K3/04C08K5/098C08K5/14C08K3/22C08K7/14H05K9/00
CPCC08L67/06H05K9/0081C08L2205/03C08K2201/011C08L63/10C08K13/06C08K9/02C08K7/06C08K3/042C08K3/04C08K5/098C08K5/14C08K5/5425C08L79/04C08K7/14C08K3/22
Inventor 罗泽阳
Owner 深圳市风采新材料科技有限公司