Coated carbon fiber reinforced ABS/PP electromagnetic shielding composite material and preparation method thereof

A technology of electromagnetic shielding and composite materials, applied in the field of electromagnetic shielding materials, can solve the problems of poor compatibility between fibers and resins, high resistivity of composite materials, and loose bonding, etc., to achieve uniform material mixing, excellent corrosion resistance, and improved bonding ability Effect

Active Publication Date: 2018-03-02
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the disadvantages of existing carbon fiber composite materials such as high resistivity and weak bonding between carbon fiber and matrix, the first purpose of the present invention is to provide a low-density coated carbon fiber reinforced composite with excellent electromagnetic shielding performance and mechanical properties. ABS / PP electromagnetic shielding composite material solves the problems of high resistivity, poor compatibility between fiber and resin, and loose combination of existing composite materials.

Method used

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  • Coated carbon fiber reinforced ABS/PP electromagnetic shielding composite material and preparation method thereof
  • Coated carbon fiber reinforced ABS/PP electromagnetic shielding composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0038] A preparation method of a coated carbon fiber reinforced ABS / PP electromagnetic shielding composite material according to this embodiment is implemented according to the following steps: 1. Put the carbon fiber in a tube furnace at a temperature of 720°C for 10 minutes; Put the carbon fiber in acetone and ultrasonically clean it for 15 minutes; 3. Prepare the nickel-aluminum coating on the surface of the carbon fiber treated in step 2 by radio frequency magnetron sputtering; 4. Shorten the coated carbon fiber treated in step 3 into a length of 2mm , to obtain chopped coated carbon fibers; 5. ABS resin, PP resin, crosslinking agent and coupling agent are placed in a high mixer in a ratio of 20:57:0.2:3, and mixed at a speed of 900r / min for 10 Minutes, make the premix; 6, place the carbon fiber after the step 4 treatment and the premix after the step 5 treatment in the ratio of 20:80 respectively in the side feeding port and the main feeding port of the twin-screw extruder...

Embodiment 2

[0042] A preparation method of a coated carbon fiber reinforced ABS / PP electromagnetic shielding composite material according to this embodiment is implemented according to the following steps: 1. Put the carbon fiber in a tube furnace at a temperature of 720°C for 10 minutes; Put the carbon fiber in acetone and ultrasonically clean it for 15 minutes; 3. Prepare the nickel-iron coating on the surface of the carbon fiber treated in step 2 by DC magnetron sputtering; 4. Shorten the coated carbon fiber treated in step 3 into a length of 5 mm , to obtain chopped coated carbon fibers; 5. ABS resin, PP resin, crosslinking agent and coupling agent are placed in a high mixer in a ratio of 30:33:0.1:2, and mixed at a speed of 900r / min for 10 Minutes, make the premix; 6, place the carbon fiber after the step 4 treatment and the premix after the step 5 treatment in the ratio of 35:65 respectively in the side feeding port and the main feeding port of the twin-screw extruder, melt Extrusio...

Embodiment 3

[0046] A preparation method of a coated carbon fiber reinforced ABS / PP electromagnetic shielding composite material according to this embodiment is implemented according to the following steps: 1. Put the carbon fiber in a tube furnace at a temperature of 720°C for 10 minutes; Put the carbon fiber in acetone and ultrasonically clean it for 15 minutes; 3. Prepare a nickel-copper coating on the surface of the carbon fiber treated in step 2 by DC magnetron sputtering; 4. Shorten the coated carbon fiber treated in step 3 into a length of 8 mm , to obtain chopped coated carbon fibers; 5. ABS resin, PP resin, crosslinking agent and coupling agent are placed in a high mixer in a ratio of 30:57:0.2:3, and mixed at a speed of 900r / min for 10 Minutes to make a premix; 6. Place the carbon fiber processed in step 4 and the premix processed in step 5 in the ratio of 10:90 respectively in the side feed port and the main feed port of the twin-screw extruder, and melt Extrusion, that is to co...

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Abstract

The invention discloses a coated carbon fiber reinforced ABS / PP electromagnetic shielding composite material and a preparation method thereof. The electromagnetic shielding composite material is obtained through melt extrusion molding of nickel base alloy coated carbon fiber, ABS / PP blended resin, a crosslinking agent and a coupling agent. The prepared composite material has a good electromagneticshielding effect in an extremely wide frequency range, and also has high strength, high modulus, corrosion resistance and excellent thermal stability, and the preparation method of the composite material is simple and low in cost, and meets industrial production.

Description

technical field [0001] The invention relates to an electromagnetic shielding material, in particular to a coated carbon fiber reinforced ABS / PP electromagnetic shielding composite material and a preparation method thereof, belonging to the field of electromagnetic shielding materials. Background technique [0002] With the rapid development of modern electronic technology, electronic appliances and radio equipment are widely used, and the problem of electromagnetic radiation is becoming more and more serious. It has become another pollution after noise pollution, air pollution, water pollution and solid waste pollution. Big public nuisance. Electromagnetic waves not only interfere with the normal operation of various electronic devices and affect human health, but also cause information leakage and threaten the country's political, economic and military security. Therefore, exploring efficient electromagnetic shielding materials has become an urgent problem to be solved. ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L55/02C08K13/06C08K9/10C08K7/06C08K5/14C08K5/54
CPCC08L23/12C08L55/02C08L2201/08C08K13/06C08K9/10C08K7/06C08K5/14C08K5/54
Inventor 黄小忠王畅岳建岭杜作娟
Owner CENT SOUTH UNIV
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