Activation technology of carbon fiber

A carbon fiber and process technology, which is applied in the field of carbon fiber activation process, can solve the problems of limited activation effect and validity period, limited application range of carbon fiber, poor compatibility and bonding force, etc., and achieves the reduction of crystallinity and crystallite thickness. , The effect of increasing the grain layer spacing

Inactive Publication Date: 2018-12-11
合肥岑遥新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Chinese patent CN105332098A discloses a carbon fiber activation process, including the following steps: Step 1, polyacrylonitrile-based carbon fiber preparation; Step 2, plasma treatment; Step 3, carbon fiber sizing; the carbon fiber process of the present invention improves the carbon fiber to a certain extent. Polarity and activity, but because the water-based polyurethane emulsion is used in the present invention to sizing the carbon fiber and coated on the surface of the carbon fiber, the coating is easy to fall off, and the activation effect and validity period are limited
The carbon fiber surface treatment method of the present invention is simple, the reaction time is short, and can be industrialized and continuously produced, but the compatibility and bonding force between the activated carbon fiber and the polymer of the present invention are not good, which limits the application range of the activated carbon fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A carbon fiber activation process, comprising the following steps:

[0032] (1) Put the carbon fiber into the Soxhlet extractor, first wash it with 10% hydrochloric acid for 2 hours, then wash it with 10% sodium hydroxide for 2 hours, and finally wash it with acetone for 3 hours, take it out, put the carbon fiber in Soak in 10% hydrogen peroxide solution for impurity removal, wash it repeatedly with deionized water, and then dry it in vacuum;

[0033] (2) Add the carbon fiber treated in step (1) and sodium dodecylbenzenesulfonate equivalent to 1% of its weight into water, mix evenly, put it into an ultrasonic generator and process the carbon fiber ultrasonically for 1 hour, take it out quickly and Put it in clean water to make it cool quickly, and then dry it;

[0034] (3) placing the carbon fiber after ultrasonic treatment in a low-temperature plasma instrument for activation pretreatment;

[0035] (4) Add azobisisonitrile equivalent to 3% by weight to the methacryli...

Embodiment 2

[0046] A carbon fiber activation process, comprising the following steps:

[0047] (1) Put the carbon fiber into the Soxhlet extractor, first wash it with 10% hydrochloric acid for 2 hours, then wash it with 10% sodium hydroxide for 2 hours, and finally wash it with acetone for 3 hours, take it out, put the carbon fiber in Soak in 10% hydrogen peroxide solution for impurity removal, wash it repeatedly with deionized water, and then dry it in vacuum;

[0048] (2) Add the carbon fiber processed in step (1) and sodium dodecylbenzene sulfonate equivalent to 3% of its weight into water, mix evenly, put it into an ultrasonic generator and process the carbon fiber ultrasonically for 2 hours, take it out quickly and Put it in clean water to make it cool quickly, and then dry it;

[0049](3) placing the carbon fiber after ultrasonic treatment in a low-temperature plasma instrument for activation pretreatment;

[0050] (4) Add azobisisonitrile equivalent to 8% by weight to the methacr...

Embodiment 3

[0061] A carbon fiber activation process, comprising the following steps:

[0062] (1) Put the carbon fiber into the Soxhlet extractor, first wash it with 10% hydrochloric acid for 2 hours, then wash it with 10% sodium hydroxide for 2 hours, and finally wash it with acetone for 3 hours, take it out, put the carbon fiber in Soak in 10% hydrogen peroxide solution for impurity removal, wash it repeatedly with deionized water, and then dry it in vacuum;

[0063] (2) Add the carbon fiber after step (1) treatment and sodium dodecylbenzenesulfonate equivalent to 1.8% of its weight into water, mix uniformly, insert in the sonicator and process the carbon fiber ultrasonically for 1.6 hours, take it out quickly and After putting it into clean water to make it cool quickly, dry it;

[0064] (3) placing the carbon fiber after ultrasonic treatment in a low-temperature plasma instrument for activation pretreatment;

[0065] (4) Add azobisisonitrile equivalent to 4% by weight to the methac...

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Abstract

The invention discloses an activation technology of carbon fiber, and relates to the field of fiber treatment. The activating technology comprises the following steps of (1) surface cleaning of the carbon fiber; (2) ultrasonic treatment of surface; (3) activating pretreatment; (4) preparation of a polymer solution; (5) impregnating treatment; (6) surface activation of the carbon fiber. The activation technology has the advantages that after the surface of the carbon fiber is treated by the purifying and ultrasonic treatment, the organic matters are introduced to the surface of the carbon fiber, the bonding property of the organic matters at the surface of the carbon fiber is strong, the activated carbon fiber has good polarity, and the compatibility is excellent; the application prospect is broad.

Description

technical field [0001] The invention relates to the field of fiber treatment, in particular to a carbon fiber activation process. Background technique [0002] Carbon fiber composite material (CFRP) is mainly made of carbon fiber as a reinforcing material, and the matrix is ​​resin, metal, ceramics, etc., and is produced through a composite process, and its comprehensive performance is better than that of a single component. In this composite material, the structure of carbon fibers plays a key role. In the general carbon fiber production process, the carbon fiber with graphite structure after high-temperature carbonization has a smooth surface, low surface energy, and few active functional groups. The carbon fiber with this structure has poor wettability with the organic polymer matrix, so it needs to be activated. Improve the surface activity of carbon fiber and the comprehensive performance of composite materials. [0003] Chinese patent CN105332098A discloses a carbon ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/13D06M10/02D06M13/256D06M13/203D06M15/263D06M11/50D06M101/40
CPCD06M10/02D06M10/025D06M11/13D06M11/50D06M13/203D06M13/256D06M15/263D06M2101/40
Inventor 万明军
Owner 合肥岑遥新材料科技有限公司
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