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Preparation method of carbon cloth with nanoparticle modified surface

A technology of nanoparticle modification and carbon cloth, which is applied in carbon fiber, textiles, papermaking, fiber treatment, etc. It can solve the problems of difficult control of surface uniformity, achieve excellent self-lubricating performance, high oxygen content, and improve bond strength and the effect of tensile strength

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

AI Technical Summary

Problems solved by technology

Although this method has modified the nano-silica particles on the surface of carbon fibers to a certain extent, the surface uniformity is difficult to control, and it is necessary to further explore new methods for the modification of carbon fiber surface nanoparticles

Method used

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  • Preparation method of carbon cloth with nanoparticle modified surface
  • Preparation method of carbon cloth with nanoparticle modified surface

Examples

Experimental program
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Effect test

Embodiment 1

[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, take it out and dry it naturally to get sample A;

[0021] 2) Put sample A and 50ml of concentrated nitric acid into a hydrothermal reaction kettle, then put the hydrothermal reaction kettle into a homogeneous reactor at 100°C for 2 hours, take out the carbon cloth after the reaction, and use deionized water to carry out Wash, and finally vacuum-dry at a constant temperature of 80°C to obtain sample B;

[0022] 3) Put sample B and 50ml of silica sol solution with a mass concentration of 3% into a polytetrafluoroethylene-lined reactor, then put the reactor into a microwave hydrothermal reactor, and set the power to 300W. Insulate and react at 160°C for 60 minutes, then the temperature of the reaction system to be obtained is lowered to room temperature, sample B is taken out from the reaction system in the reactor and washed with deionized water, and fin...

Embodiment 2

[0024] 1) Cut the carbon cloth into a rectangular shape of 5cm×7cm, soak it in acetone solution for 24 hours to make it soak, take it out and dry it naturally to get sample A;

[0025] 2) Put sample A and 50ml of concentrated nitric acid into a hydrothermal reaction kettle, then put the hydrothermal reaction kettle into a homogeneous reactor at 100°C for 2 hours, take out the carbon cloth after the reaction, and use deionized water to carry out Wash, and finally vacuum-dry at a constant temperature of 80°C to obtain sample B;

[0026] 3) put sample B and 50ml mass concentration of 6% silica sol solution into a polytetrafluoroethylene-lined reactor, then put the reactor into a microwave hydrothermal reactor, and set the power to 400W. Insulate and react at 180°C for 90 minutes, then the temperature of the reaction system to be obtained is lowered to room temperature, sample B is taken out from the reaction system in the reactor and washed with deionized water, and finally vacuu...

Embodiment 3

[0028] 1) Cut the carbon cloth into a rectangular shape of 5cm×7cm, soak it in acetone solution for 24 hours to make it soak, take it out and dry it naturally to get sample A;

[0029] 2) Put sample A and 50ml of concentrated nitric acid into a hydrothermal reaction kettle, then put the hydrothermal reaction kettle into a homogeneous reactor at 100°C for 2 hours, take out the carbon cloth after the reaction, and use deionized water to carry out Wash, and finally vacuum-dry at a constant temperature of 80°C to obtain sample B;

[0030] 3) put sample B and 50ml mass concentration of 9% silica sol solution into a polytetrafluoroethylene-lined reactor, then put the reactor into a microwave hydrothermal reactor, and set the power to 400W. Insulate and react at 200°C for 120 minutes, then the temperature of the reaction system to be obtained is lowered to room temperature, sample B is taken out from the reaction system in the reactor and washed with deionized water, and finally vacu...

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Abstract

The invention relates to a preparation method of carbon cloth with the nanoparticle modified surface. The method comprises the steps of putting carbon cloth into an acetone solution, saturating, and drying the carbon cloth after the saturating 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 for oxidization, cleaning the taken carbon cloth, and finally carrying out vacuum drying to obtain a sample B; putting the sample B and a silica sol solution into a reaction kettle, and carrying out reaction in a microwave hydrothermal reaction instrument; cooling a reaction system to the room temperature, and washing the sample B taken from the reaction system; finally, carrying out the vacuum drying to obtain the carbon cloth with the nanoparticle modified surface. According to the method, SiO2 nanoparticles can be evenly deposited on the surface of the carbon cloth efficiently; the prepared carbon cloth with the nanoparticle modified surface is high in surface oxygen content; the uniformity of a reticular polymer formed by a linear polymer through cross-linking action in the sulfidation process can be improved; and therefore, the carbon cloth has the superior self-lubricating property, mechanical strength and tribological property.

Description

technical field [0001] The invention belongs to the field of carbon fiber materials, and in particular relates to a preparation method of carbon cloth whose surface is modified by nano particles. 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 carbon atoms are few, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/64D06M10/06D06M101/40
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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