Preparation method and device for carbon fiber-reinforced thermoplastic resin composite material

A technology of resin composite material and reinforced thermoplastic, applied in the direction of coating, can solve the problems of low mechanical performance, uneven dispersion of metal powder, unstable electromagnetic shielding performance, etc., to improve mechanical performance, reduce equipment investment, and achieve excellent electromagnetic protection. performance effect

Inactive Publication Date: 2016-02-24
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the molded products manufactured by these methods have problems such as low mechanical properties, or uneven dispersion of metal powder, which leads to unstable electromagnetic shielding performance, and it is difficult to meet the increasing requirements of electronic and electrical equipment on the mechanical properties and electromagnetic protection performance of materials.

Method used

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  • Preparation method and device for carbon fiber-reinforced thermoplastic resin composite material
  • Preparation method and device for carbon fiber-reinforced thermoplastic resin composite material
  • Preparation method and device for carbon fiber-reinforced thermoplastic resin composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A heating export device 11 is arranged at the outlet of the molten impregnation die head 9, which includes a heating device 14, an inner cavity body 15 and a resin discharge port 16, the heating device 14 is located on the outer wall of the inner cavity body 15, and the resin discharge port 16 is located at the inner cavity body 15 directly below the . The heating device 14 is a resistance wire.

[0048] The polyacrylonitrile (PAN)-based high-strength 12K carbon fiber was heat-treated in a desizing furnace at 450°C for 20 minutes, and the atmosphere was nitrogen; then the carbon fiber was used as the cathode, and the electroplated anode plate was a nickel plate for continuous nickel plating. The formula of the electroplating solution is: NiSO 4 ·6H 2 O240g / L, NiCl 2 ·6H 2 O30g / L, NaCl15g / L, MgCl 2 15g / L,H 3 BO 3 30g / L, the pH value is controlled at 4.2-5.0, and the temperature is 40°C. The current through the carbon fiber tow is 2A, and the total electroplating ...

Embodiment 2

[0053] The structure of the heating exporting device 11 is shown in Embodiment 1.

[0054] The polyacrylonitrile (PAN)-based high-strength 12K carbon fiber was heat-treated in a desizing furnace at 550°C for 12 minutes, and the atmosphere was nitrogen; after that, the carbon fiber was used as the cathode, and the electroplated anode plate was a nickel plate for continuous nickel plating. The formula of the electroplating solution is: NiSO 4 ·6H 2 O120g / L, NiCl 2 ·6H 2 O30g / L, NaCl10g / L, MgCl 2 10g / L,H 3 BO 3 40g / L, the pH value is controlled at 4.8-5.5, and the temperature is 20°C. The current through the carbon fiber tow is 2A, and the total electroplating time is 6min. The metal-plated carbon fiber was washed with deionized water, the washing temperature and time were 30°C and 5min, respectively, and the nickel ion content in the washing water was detected to be 0.021g / L; the cleaned nickel-plated carbon fiber was put into a 400°C heat treatment furnace for 4 minutes,...

Embodiment 3

[0058] At the outlet of the molten impregnation die 9, a heating export device 11 is arranged, which includes a heating device 14, an inner cavity body 15 and a resin discharge port 16, the heating device 14 is located at the outer wall of the inner cavity body 15, and the resin discharge port 16 is located at the inner cavity body 15 directly below the . The heating device 14 is hot air.

[0059] The polyacrylonitrile (PAN)-based high-strength 12K carbon fiber was heat-treated in a desizing furnace at 650°C for 5 minutes, and the atmosphere was argon; then the carbon fiber was used as the cathode, and the electroplated anode plate was a nickel plate for continuous nickel plating. The formula of the electroplating solution is: NiSO 4 ·6H 2 O300g / L, NiCl 2 ·6H 2 O10g / L, NaCl30g / L, MgCl 2 5g / L,H 3 BO 3 15g / L, the pH value is controlled at 4.4-5.2, and the temperature is 50°C. The current through the carbon fiber tow is 2A, and the total electroplating time is 6min.

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Abstract

The invention provides a manufacturing method for a carbon fiber-reinforced thermoplastic resin composite material. The method comprises the steps of firstly removing a sizing agent on a carbon fiber surface, then performing metallic coating treatment, water scrubbing and surface heat treatment, leading into a dipping die head containing melt thermoplastic resin in a splitting state, enabling the melt thermoplastic resin to wrap the carbon fiber surface, then performing cooling and grain-size dicing, so that the carbon fiber-reinforced thermoplastic resin composite material is prepared. The method has the advantages of simple and practical process, low cost, stable quality, good mechanical property, good electromagnetic protective property and light weight.

Description

technical field [0001] The invention relates to a manufacturing method and device of a carbon fiber reinforced thermoplastic resin composite material. Background technique [0002] With the rapid development of the modern electronic industry and the popularization of electronic and electrical equipment, the problem of electromagnetic radiation is becoming more and more serious. Electromagnetic wave radiation can interfere with surrounding electronic equipment, causing accidents and information leakage, posing a serious threat to information security such as computers and communications. In addition, electromagnetic radiation also has a serious impact on human health. [0003] In order to solve this problem, in addition to the high mechanical performance and light weight traditionally required, electronic and electrical equipment also requires high electromagnetic radiation resistance. Housings of electronic and electrical equipment are generally produced by injection moldi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/12C08L79/08C08K9/00C08K7/06B29B15/10C25D5/54C25D3/38C25D3/12
CPCC08K9/00B29B15/10C08K7/06C25D3/12C25D3/38C25D5/54
Inventor 吴刚平吕春祥李文君朱宏
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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