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Electromagnetic shielding polymeric material

A technology of electromagnetic shielding and polymeric materials, which is applied in the field of functional polymeric materials, can solve the problems of difficult material production and processing, high filling rate, and poor physical properties of materials, and achieve good electromagnetic shielding effect, easy injection molding, and high mechanical strength. Effect

Inactive Publication Date: 2010-11-03
GUANGDONG HIGH & NEW ENG PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional pure metal electromagnetic shielding device has good electromagnetic shielding effect, but it is difficult to process or form parts with complex shapes. The metal itself has disadvantages such as poor chemical corrosion resistance and high specific gravity. The scope of use is limited, and it cannot meet the requirements of some special occasions.
[0004] Plastic has the advantages of easy processing and molding, chemical corrosion resistance, light specific gravity, etc., but the electromagnetic shielding effect of plastic is poor
To improve its electromagnetic shielding, a new type of polymer composite material for electromagnetic shielding is mainly prepared by conductive and magnetic filler dispersion blending compound method, but due to high filling rate, poor dispersion, difficult production and processing of materials and poor physical properties of materials

Method used

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  • Electromagnetic shielding polymeric material

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preparation example Construction

[0018] The preparation method of polyamide electromagnetic shielding masterbatch comprises:

[0019] 1) After immersing the chopped nickel-plated stainless steel fiber in titanate coupling agent diluent for 10-20 min, take out the chopped nickel-plated stainless steel fiber and dry it;

[0020] 2) Mix polyamide, treated chopped nickel-plated stainless steel fiber and conventional additives, extrude and granulate to obtain polyamide electromagnetic shielding masterbatch.

[0021] The polyamide electromagnetic shielding masterbatch contains 40-75% by weight of chopped nickel-plated stainless steel fibers, the diameter of the chopped nickel-plated stainless steel fibers is 8-12 μm, and the length is 8-12 mm.

[0022] The preparation method of the electromagnetic shielding polymeric material of the present invention is as follows:

[0023] Mix the electromagnetic shielding aid and coupling agent uniformly at 50-80°C, then add polyphenylene sulfide, polyamide electromagnetic shiel...

Embodiment 1

[0028] The electromagnetic shielding polymeric material contains the following parts by weight:

[0029] 100 parts of polyphenylene sulfide;

[0030] 100 parts of polyamide electromagnetic shielding masterbatch, polyamide electromagnetic shielding masterbatch contains 66% chopped nickel-plated stainless steel fiber;

[0031] Electromagnetic shielding additive 70 parts, composed of 400 mesh aluminized hollow glass beads;

[0032] 1.5 parts of antioxidant, made up of 0.5 part of hindered phenol antioxidant 1010, 0.5 part of phenolic antioxidant 264 (BHT), 0.5 part of phosphite antioxidant;

[0033] 1.2 parts of titanate coupling agent, composed of chelating pyrophosphate titanate coupling agent CS311;

[0034] 1.5 parts of processing aids, consisting of 0.4 parts of pentaerythritol stearate PETS, 0.3 parts of silicone powder, and 0.8 parts of TAF.

Embodiment 2

[0036] The electromagnetic shielding polymeric material contains the following parts by weight:

[0037] 100 parts of polyphenylene sulfide;

[0038] Polyamide electromagnetic shielding masterbatch 90 parts, polyamide electromagnetic shielding masterbatch contains 75% chopped nickel-plated stainless steel fiber

[0039] 80 parts of electromagnetic shielding additives, consisting of 60 parts of 400-mesh aluminized hollow glass beads and 20 parts of 400-mesh brass powder;

[0040] 1 part of antioxidant, consisting of 0.6 part of phenolic antioxidant 2246 and 0.4 part of metal deactivator MD1024;

[0041] 0.8 parts of titanate coupling agent, consisting of 0.3 parts of pyrophosphate titanate coupling agent CS-201, 0.5 parts of coordination type phosphite titanate coupling agent CS-401;

[0042] 2 parts of processing aids, consisting of 0.8 parts of pentaerythritol stearate PETS, 0.8 parts of silicone powder, and 0.4 parts of calcium stearate.

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Abstract

The invention discloses an electromagnetic shielding polymeric material which comprises the following raw materials in portions by weight: 100 portions of polyphenyl thioether, 60-150 portions of polyamide electromagnetic shielding master batch, 20-120 portions of electromagnetic shielding accessory ingredient, 0.2-0.6 portion of antioxidant, 0.4-2 portions of coupling agent and 0.5-3 portions of processing accessory ingredient. The electromagnetic shielding polymeric material of the invention has the advantages of favorable electromagnetic shielding effect, high mechanical strength, good toughness, temperature resistance and easy injection molding.

Description

technical field [0001] The invention relates to a functional polymer material, in particular to an electromagnetic shielding polymer material. Background technique [0002] With the rapid development of science and technology and the electronic industry, various electronic and electrical equipment can be used in large quantities. Electromagnetic waves can cause problems such as electromagnetic interference and electromagnetic incompatibility, which not only cause interference and damage to electronic instruments and equipment, affect their normal work, but also pollute the environment and endanger human health. At the same time, the leakage of electromagnetic waves will also endanger the security of national information security and military core secrets. [0003] The traditional pure metal electromagnetic shielding device has good electromagnetic shielding effect, but it is difficult to process or form parts with complex shapes. The metal itself has disadvantages such as p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08L77/00C08K13/06C08K9/04C08K9/10C08K7/04C08K7/28C08K3/08C08K7/06
Inventor 皮正亮张积宾曾斌朱国良
Owner GUANGDONG HIGH & NEW ENG PLASTICS
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