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Conductive and magnetic-conductive polyaniline modified carbon fiber preparation method

A conductive and magnetically conductive, polyaniline technology, applied in the direction of carbon fiber, conductive paint, coating, etc., can solve problems such as high surface energy, decreased affinity, and influence on carbon fiber dispersion

Inactive Publication Date: 2017-03-22
WUXI MINGSHENG STRONG BLOWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The short carbon fiber has a large surface area and high surface energy, and it is easy to absorb moisture in the air, which reduces the affinity between the carbon fiber and the resin and affects the dispersion of the carbon fiber in the coating system. Large oil absorption value, it is difficult to disperse evenly in the coating system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of conductive and magnetically conductive polyaniline modified carbon fibers, comprising:

[0018] (1) ultrasonically disperse the nano-magnetic powder into water, add oleic acid and sodium dodecylbenzenesulfonate, heat up to 75° C. and keep it warm for at least 1 hour, and cool to room temperature to obtain a magnetic powder dispersion;

[0019] (2) adding short carbon fibers and aniline hydrochloride to the magnetic powder dispersion, ultrasonically dispersing at 3°C ​​for at least 1 hour, adding ammonium persulfate solution, and in-situ polymerization at 5°C for 12 hours;

[0020] (3) Alternately washing the reaction product with hydrochloric acid and acetone, washing with water until the pH is 7, filtering, and drying to obtain the polyaniline-modified carbon fiber.

Embodiment 2

[0022] A preparation method of conductive and magnetically conductive polyaniline modified carbon fibers, comprising:

[0023] (1) ultrasonically disperse the nano-magnetic powder into water, add oleic acid and sodium dodecylbenzenesulfonate, heat up to 85° C. and keep it warm for at least 1 hour, and cool to room temperature to obtain a magnetic powder dispersion;

[0024] (2) adding short carbon fibers and aniline hydrochloride to the magnetic powder dispersion, ultrasonically dispersing at 10°C for at least 1 hour, adding ammonium persulfate solution, and in-situ polymerization at 15°C for 18 hours;

[0025] (3) Alternately washing the reaction product with hydrochloric acid and acetone, washing with water until the pH is 7, filtering, and drying to obtain the polyaniline-modified carbon fiber.

Embodiment 3

[0027] A preparation method of conductive and magnetically conductive polyaniline modified carbon fibers, comprising:

[0028] (1) ultrasonically disperse the nano-magnetic powder into water, add oleic acid and sodium dodecylbenzenesulfonate, heat up to 80° C. and keep it warm for at least 1 hour, and cool to room temperature to obtain a magnetic powder dispersion;

[0029] (2) adding short carbon fibers and aniline hydrochloride to the magnetic powder dispersion, ultrasonically dispersing at 5°C for at least 1 hour, adding ammonium persulfate solution, and in-situ polymerization at 10°C for 16 hours;

[0030] (3) Alternately washing the reaction product with hydrochloric acid and acetone, washing with water until the pH is 7, filtering, and drying to obtain the polyaniline-modified carbon fiber.

[0031] In the preparation method of Examples 1-3, a layer of conductive polyaniline, a conductive polymer, is coated on the surface of the carbon fiber, which improves the dispersib...

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PUM

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Abstract

The invention discloses a conductive and magnetic-conductive polyaniline modified carbon fiber preparation method, which comprises the steps: 1, ultrasonically dispersing nanometer magnetic powder into water, adding oleic acid and sodium dodecyl benzene sulfonate, heating to 75 to 85 DEG C, keeping the temperature for at least one hour and cooling to a room temperature to obtain magnetic powder dispersion liquid; 2, adding short carbon fiber and aniline hydrochloride into the magnetic powder dispersion liquid, ultrasonically dispersing in 3 to 10 DEG C for at least one hour, adding ammonium persulfate solution and performing in-site polymerization reaction for 12 to 18 hours in 5 to 15 DEG C; 3, alternatively washing reaction products through hydrochloric acid and acetone, washing until the pH is 7, filtering and drying to obtain the polyaniline modified carbon fiber. According to the preparation method, the surface of the carbon fiber is wrapped by a layer of conductive polymer conductive polyaniline; thus, the dispersity of the carbon fiber in a paint system is improved.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a method for preparing conductive and magnetically conductive polyaniline modified carbon fibers. Background technique [0002] With the rapid development of computer and network technology, people have entered the "information age". Electromagnetic waves, as the carrier of information transmission, have entered household appliances, communications, computers and information equipment, power tools, aerospace industry, science and technology, medicine and other social life. each field. All kinds of electronic products use engineering plastics as their shells, and engineering plastics are almost "transparent" to electromagnetic waves, which makes the electromagnetic environment in a limited space worse than ever, and brings a series of social and environmental problems. Such as electromagnetic interference, electromagnetic information leakage and the harm of electromagnetic radi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D5/24D06M15/61D06M101/40
CPCC09D5/24C09D7/70D06M15/61D06M2101/40
Inventor 张达明
Owner WUXI MINGSHENG STRONG BLOWER
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