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Ultrasonic surface modification treatment method for aramid fibers

An aramid fiber, surface modification technology, applied in fiber treatment, ultrasonic/sonic fiber treatment, fiber type, etc., can solve the problem that the surface state of aramid fiber cannot be improved, the bonding strength of resin and fiber cannot be enhanced, and ultrasonic treatment medium corrosion It can easily solve the problems of strong resistance and other problems, so as to achieve the effect of easy on-line continuous processing, shortening the modification time and improving the hand feeling.

Inactive Publication Date: 2012-07-25
中蓝晨光化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that the ultrasonic treatment medium in the prior art is highly corrosive, cannot improve the surface state of the aramid fiber, and cannot enhance the bonding strength between the resin and the fiber, and provides an ultrasonic surface treatment method for the aramid fiber, which can reduce the Medium corrosion, the purpose of improving the surface state of aramid fibers

Method used

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  • Ultrasonic surface modification treatment method for aramid fibers

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Embodiment 1

[0024] A method for ultrasonic surface modification treatment of aramid fiber, comprising ultrasonic treatment, cleaning and drying of aramid fiber tow to obtain modified aramid fiber (modification refers to improving surface roughness and interlayer shear strength ), characterized in that: in the ultrasonic treatment, the ultrasonic treatment medium used is one or several kinds of amides organic solvents in any proportion.

[0025] By using amide organic solvents as the medium of ultrasonic treatment, other processes adopt conventional techniques, which can significantly improve the performance of aramid fibers, such as interlayer shear strength.

Embodiment 2

[0027] A method for ultrasonic surface modification treatment of aramid fiber, comprising ultrasonic treatment, cleaning and drying of aramid fiber tow to obtain modified aramid fiber (modification refers to improving surface roughness and interlayer shear strength ), characterized in that: in the ultrasonic treatment, the ultrasonic treatment medium used is one or several kinds of amides organic solvents in any proportion.

[0028] Among them, N,N-dimethylformamide (DMF), N,N-dimethylacetamide (DMAC), N,N-dimethylpropionamide, N,N-diethyl One of propionamide, N,N-diethylacetamide, hexamethylphosphoric triamide (HMTA), N-methylpyrrolidone (NMP) or several in any proportion.

Embodiment 3

[0030] A method for ultrasonic surface modification treatment of aramid fiber, comprising ultrasonic treatment, cleaning and drying of aramid fiber tow to obtain modified aramid fiber (modification refers to improving surface roughness and interlayer shear strength ), characterized in that: in the ultrasonic treatment, the ultrasonic treatment medium used is one or several kinds of amides organic solvents in any proportion.

[0031] The ultrasonic treatment of the aramid fiber tow in the present invention is as follows: the aramid fiber tow is passed through the godet roller on-line and continuously through the ultrasonic cleaning tank filled with ultrasonic treatment medium, and the ultrasonic treatment is carried out, and the liquid surface is completely immersed in the aramid fiber. fiber tow.

[0032] The method of cleaning the aramid fiber tow in the present invention is as follows: the aramid fiber tow passing through the ultrasonic cleaning tank is continuously passed t...

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Abstract

The invention provides an ultrasonic surface modification treatment method for aramid fibers. One or more amidic organic solvents in any proportion are selected as an ultrasonic treatment medium; under an ultrasonic action, fiber surfaces can be etched effectively by the amidic solvents; simultaneously, the sticking points among aramid fiber filaments can be reduced, and the state of the surfaces can be improved, so that the bonding strength between a resin and a fiber is increased; and meanwhile, the online treatment of the fibers is easy to realize by the ultrasonic treatment, and the time for modifying the fiber surfaces is shortened.

Description

Technical field [0001] The present invention involves a surface treatment method of a aramid fiber. More specifically, the invention involves an ultrasonic surface modification method of a aramid fiber. Background technique [0002] Aramid fiber is a high -performance organic fiber. It has many excellent characteristics such as high -strength and high -profile, high temperature resistance, light weight, light weight, anti -impact, fatigue, good chemical stability, low expansion, low heat conductivity, and good dielectricity.Therefore, in the field of aerospace, aramid is gradually used as enhanced materials for composite materials. [0003] However, due to the low surface of the aramid fiber, the infiltration of the resin matrix is relatively poor, the interface bonding strength is low, and the fiber and the substrate resin adhesion strength is low.Therefore, the surface modification must be treated to improve the interface binding force of the fiber and the resin matrix, thereby...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/02D06M101/36
Inventor 王凤德陈超峰彭涛兰江刘克杰杨文良
Owner 中蓝晨光化工有限公司
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