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Preparation method of carbon cloth with wet chemical modified surface

A technology of wet chemistry and carbon cloth, which is applied in the fields of carbon fiber, textiles, papermaking, fiber treatment, etc. It can solve the problems of difficult control of surface uniformity and limited number of functional groups on the surface of carbon fiber, and achieve controllable conditions, low cost and high efficiency Effect

Inactive Publication Date: 2014-12-03
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has problems such as increasing the number of functional groups on the surface of carbon fibers is limited, and the surface uniformity is difficult to control.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Preparation method of carbon cloth with wet chemical modified surface
  • Preparation method of carbon cloth with wet chemical modified surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Cut the carbon cloth into a rectangular shape of 5cm×7cm, soak it in acetone solution for 24 hours to make it soak, then take it out and dry it under natural conditions to obtain sample A;

[0018] 2) Put sample A and concentrated nitric acid into a hydrothermal reaction kettle, then put the hydrothermal reaction kettle into a homogeneous reactor at 140°C for 1 hour, take out the carbon cloth after the reaction, and clean it with deionized water , and finally vacuum-dried at 80°C to obtain a carbon cloth whose surface has undergone wet chemical modification; wherein, the volume content of concentrated nitric acid in the hydrothermal reaction kettle is 30%.

Embodiment 2

[0020] 1) Cut the carbon cloth into a rectangular shape of 5cm×7cm, soak it in acetone solution for 24 hours to make it soak, then take it out and dry it under natural conditions to obtain sample A;

[0021] 2) Put sample A and concentrated nitric acid into a hydrothermal reaction kettle, then put the hydrothermal reaction kettle into a homogeneous reactor at 120°C for 2 hours, take out the carbon cloth after the reaction, and clean it with deionized water , and finally vacuum-dried at 80°C to obtain a carbon cloth whose surface has undergone wet chemical modification; wherein, the volume content of concentrated nitric acid in the hydrothermal reaction kettle is 40%.

Embodiment 3

[0023] 1) Cut the carbon cloth into a rectangular shape of 5cm×7cm, soak it in acetone solution for 24 hours to make it soak, then take it out and dry it under natural conditions to obtain sample A;

[0024] 2) Put sample A and concentrated nitric acid into a hydrothermal reaction kettle, then put the hydrothermal reaction kettle into a homogeneous reactor at 100°C for 3 hours, take out the carbon cloth after the reaction, and clean it with deionized water , and finally vacuum-dried at 80°C to obtain a carbon cloth whose surface has undergone wet chemical modification; wherein, the volume content of concentrated nitric acid in the hydrothermal reaction kettle is 40%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a preparation method of carbon cloth with the wet chemical modified surface. The method comprises the steps of putting cut carbon cloth into acetone, saturating, naturally drying the taken saturated carbon cloth in the air to obtain a sample A; putting the sample A and concentrated nitric acid into a hydrothermal reaction kettle; putting the hydrothermal reaction kettle into a homogeneous reactor, carrying out heat preservation at the temperature of 80-140 DEG C, and carrying out reaction for 1-4 hours; after the reaction, cleaning the taken carbon cloth by deionized water; finally, carrying out vacuum drying to obtain the carbon cloth with the wet chemical modified surface. According to the preparation method, the oxidation treatment is carried out on the surface of the carbon cloth under the hydrothermal condition; the preparation method has the advantages of being simple in equipment, efficient, even in corrosion, capable of effectively optimizing friction and wear properties of a carbon cloth reinforced resin-based friction material, and the like; the oxygen content of the surface of the prepared carbon cloth is high, and thus the method is a modification method which is low in cost and consumption, high in efficiency, simple to operate and controllable in conditions.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber surface modification, and in particular relates to a method for preparing carbon cloth whose surface has been wet-chemically modified. Background technique [0002] Carbon fiber is a new type of fiber material with high strength and high modulus fiber containing more than 95% carbon. It is a microcrystalline graphite material obtained by stacking organic fibers such as flake graphite microcrystals along the axial direction of the fiber, and undergoing carbonization and graphitization. Because of its high specific strength, high specific modulus, small coefficient of thermal expansion, low coefficient of friction, and good low temperature resistance, it has become the ultimate reinforcing material for resin-based composite materials in recent years and is widely used in the field of friction materials. The surface of carbon fiber is inert, the specific surface area is small, the edge active c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/64D06M101/40
Inventor 费杰王洪坤黄剑锋罗威曹丽云欧阳海波李翠艳孔新刚卢靖
Owner SHAANXI UNIV OF SCI & TECH
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