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Electromagnetic shielding PC/ABS alloy material

An alloy material and electromagnetic shielding technology, which is applied in the field of alloy plastics, can solve problems such as no single material showing shielding performance, complex preparation of polymer materials, and adverse effects of shielding, so as to improve electromagnetic shielding effect, reduce electromagnetic pollution, and electromagnetic shielding good performance

Active Publication Date: 2020-07-03
昆山新普发塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there will be limitations of Snoek's law, which can adversely affect shielding under the action of electromagnetic waves
[0008] (3) Conductive polymer electromagnetic shielding materials: The preparation of polymer materials is complex, and a single material does not show excellent shielding performance
Carbon nanotubes, carbon fibers, and graphene have the same shielding mechanism - reflection, that is, to reflect electromagnetic waves back, but the reflected electromagnetic waves may still cause the second electromagnetic pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] An electromagnetic shielding PC / ABS alloy material, which is composed of the following raw materials in parts by weight: 58.3 parts of PC resin, 25 parts of ABS resin, 8 parts of straw biochar material, 8 parts of compatible toughening agent, 0.3 part of antioxidant, lubricating 0.4 parts of the agent. Dry PC resin at 125°C for 3.5 h, dry ABS resin at 80°C for 4 h, mix 58.3 parts of PC resin, 25 parts of ABS resin, 8 parts of modified straw biochar material, 8 parts of compatible toughening agent, 0.3 parts of antioxidant and 0.4 parts of lubricant were mixed, extruded and granulated in a twin-screw extruder at 240°C, and dried at 100°C for 8 hours to obtain the electromagnetic shielding PC / ABS alloy material.

[0047] The compatible toughening agent is methyl methacrylate-butadiene-styrene terpolymer toughening agent, brand name: EXL-2620, Dow Chemical.

[0048] The antioxidant is Antioxidant 1010, full name tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid) pent...

Embodiment 2

[0052] An electromagnetic shielding PC / ABS alloy material, which is composed of the following raw materials in parts by weight: 58.3 parts of PC resin, 25 parts of ABS resin, 8 parts of modified straw biochar material, 8 parts of compatible toughening agent, and 0.3 part of antioxidant , 0.4 part of lubricant. Dry PC resin at 125°C for 3.5 h, dry ABS resin at 80°C for 4 h, mix 58.3 parts of PC resin, 25 parts of ABS resin, 8 parts of modified straw biochar material, 8 parts of compatible toughening agent, 0.3 parts of antioxidant and 0.4 parts of lubricant were mixed, extruded and granulated in a twin-screw extruder at 240°C, and dried at 100°C for 8 hours to obtain the electromagnetic shielding PC / ABS alloy material.

[0053] The compatible toughening agent is methyl methacrylate-butadiene-styrene terpolymer toughening agent, brand name: EXL-2620, Dow Chemical.

[0054] The antioxidant is Antioxidant 1010, full name tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid) pen...

Embodiment 3

[0060] An electromagnetic shielding PC / ABS alloy material, which is composed of the following raw materials in parts by weight: 58.3 parts of PC resin, 25 parts of ABS resin, 8 parts of modified straw biochar material, 8 parts of compatible toughening agent, and 0.3 part of antioxidant , 0.4 part of lubricant. Dry PC resin at 125°C for 3.5 h, dry ABS resin at 80°C for 4 h, mix 58.3 parts of PC resin, 25 parts of ABS resin, 8 parts of modified straw biochar material, 8 parts of compatible toughening agent, 0.3 parts of antioxidant and 0.4 parts of lubricant were mixed, extruded and granulated in a twin-screw extruder at 240°C, and dried at 100°C for 8 hours to obtain the electromagnetic shielding PC / ABS alloy material.

[0061] The compatible toughening agent is methyl methacrylate-butadiene-styrene terpolymer toughening agent, brand name: EXL-2620, Dow Chemical.

[0062] The antioxidant is Antioxidant 1010, full name tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid) pen...

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Abstract

The invention discloses an electromagnetic shielding PC / ABS alloy material, which is prepared from the following raw materials in parts by weight: 55 to 70 parts of PC resin, 18 to 40 parts of ABS resin, 5 to 15 parts of straw biochar material, 6 to 10 parts of a compatible toughening agent, 0.2 to 0.8 part of an antioxidant and 0.3 to 1.0 part of a lubricant. Compared with the prior art, the prepared straw biochar material has a special three-dimensional porous structure, multiple polarization and scattering, interface polarization and impedance matching, and can realize efficient absorptionof electromagnetic waves. The straw biochar material is applied to the PC / ABS alloy material, and the PC / ABS alloy material is applied to the field of household appliances, so that electromagnetic radiation can be effectively reduced, electromagnetic pollution is reduced, and human health is ensured.

Description

technical field [0001] The invention belongs to the field of alloy plastics, and in particular relates to an electromagnetic shielding PC / ABS alloy material. Background technique [0002] In the process of technological development, with the continuous improvement of living standards, the application range of electromagnetic waves has also been continuously expanded, and electromagnetic waves are everywhere. As electronics and products are widely used in daily life, people's lives are more convenient and the quality of life is effectively improved. In addition, due to the continuous development of electronic, electrical and communication equipment in the direction of densification and modernization, the electromagnetic environment in a limited space has deteriorated sharply, and a series of social problems have also appeared at high frequency, which has a bad impact on the ecological environment, such as electromagnetic interference, etc. The existence of electromagnetic ra...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L55/02C08L51/04C08K13/06C08K9/04C08K7/24C08K5/134C08K5/103C08K3/08C08K3/22H05K9/00C01B32/05
CPCC08L69/00H05K9/0081C01B32/05C08L2205/03C08K2201/011C08K2003/0856C08K2003/2241C08L55/02C08L51/04C08K13/06C08K9/04C08K7/24C08K5/1345C08K5/103C08K3/22C08K3/08
Inventor 张燕丹
Owner 昆山新普发塑料有限公司