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Method for carbon fiber surface modification of plasma coated with silicon dioxide by plasma treatment

A nano-silicon dioxide and plasma technology, applied in carbon fiber, fiber treatment, physical treatment, etc., can solve the problems of coating carbon fiber, etc., and achieve the effect of convenient replacement of treatment process, short process flow, and less environmental pollution

Inactive Publication Date: 2009-04-22
DONGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the existing patents on plasma treatment of carbon fiber surface modification technology do not involve the use of nano-materials to prepare sol technology, let alone the use of nano-silica sol technology to coat carbon fibers, especially carbon fibers coated with nano-silica sol The method of surface modification by plasma technology

Method used

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  • Method for carbon fiber surface modification of plasma coated with silicon dioxide by plasma treatment
  • Method for carbon fiber surface modification of plasma coated with silicon dioxide by plasma treatment
  • Method for carbon fiber surface modification of plasma coated with silicon dioxide by plasma treatment

Examples

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example 1

[0039] Helium plasma treatment of nano-silica sol-coated carbon fibers

[0040] see Figure 5 As shown, the carbon fiber 1 to be treated is immersed in nano-silica sol (0.05%) along the outer circle of the flower basket of the sol padding device 2, and the padding process is carried out, and then the carbon fiber is introduced into the drying device 3 and baked at a specific temperature. Dry and collect the solvent. Then carbon fiber is introduced into the plasma atmosphere area of ​​plasma nozzle 4 and carries out plasma surface modification (fiber bundle upper surface is apart from nozzle distance 5MM, fiber bundle lower surface is apart from nozzle figure 1 , the infrared spectrum as figure 2 .

example 2

[0042] Oxygen plasma treatment of nano-silica sol-coated carbon fibers

[0043] see Figure 5 As shown, the carbon fiber 1 to be treated is immersed in nano-silica sol (0.05%) along the outer circle of the flower basket of the sol padding device 2, and the padding process is carried out, and then the carbon fiber is introduced into the drying device 3 and baked at a specific temperature. Dry and collect the solvent. Then carbon fiber is introduced into the plasma atmosphere area of ​​plasma nozzle 4 and carries out plasma surface modification (fiber bundle upper surface is apart from nozzle distance 5MM, and fiber bundle lower surface is apart from nozzle image 3 , the infrared spectrum as Figure 4 .

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Abstract

The invention relates to a method for modifying the surface of carbon fiber coated with nano dioxide sol through plasma treatment, which comprises the following steps: firstly, nano silicon dioxide is prepared into an organic solvent, a sol solution of water or a sol solution prepared by hybridization reaction of a precursor solution of organic-inorganic nano particles and silicon dioxide nano particles by the ultrasonic vibrating technology; secondly, the sol solution is coated on the surface of the carbon fiber, treated by means of spray coating or padding and so on, and dried; and thirdly, the carbon fiber is placed on a plasma transport unit and a plasma is sprayed on the surface of the carbon fiber to generate modification, wherein the treating power is between 10 and 15,000 watts, and the treatment time is between 0.5 and 300 seconds. The method can effectively improve the performance of the carbon fiber, improves the molded manufacturability and the overall properties of composite materials of the carbon fiber, has simple technology, quick processing speed, good treatment effect and low cost, is convenient to operate and difficult to cause environmental pollution, can reduce energy consumption, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of preparation of carbon fibers and composite materials thereof, in particular to a method for plasma treatment of surface modification of carbon fibers coated with nano silicon dioxide. Background technique [0002] Carbon fiber has high axial strength and modulus, no creep, good fatigue resistance, specific heat and electrical conductivity between non-metal and metal, small thermal expansion coefficient, good chemical resistance, low fiber density, X-ray Good permeability. The disadvantage is that the impact resistance is poor and it is easy to be damaged; oxidation occurs under the action of hot strong acid, and when it is combined with metal, metal carbonization, carburization and electrochemical corrosion will occur. For this reason, surface treatment, including nickel plating, is required before compounding. Carbon fibers include filaments, staple fibers, chopped fibers, etc., which can be processed into fabri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/06D06M11/79D06M11/00C08K9/00D06M101/40
Inventor 张迎晨邹静吴红艳邱夷平
Owner DONGHUA UNIV
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