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Method for preparing graphene oxide grafted carbon fiber based on thiol-ene chemical reaction

A chemical reaction, carbon fiber technology, used in carbon fiber, fiber processing, textiles and papermaking, etc., can solve the problems of difficult industrialization, harsh reaction conditions, long reaction period, etc., to achieve short reaction period, improve interface properties, and improve overall mechanical properties Effect

Active Publication Date: 2019-04-05
江西国计纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of long reaction period, harsh reaction conditions and difficulty in industrialization of existing carbon fiber surface graft modification methods. The present invention provides a carbon fiber surface with simple experimental steps, short reaction time and non-toxic process. Method for grafting graphene oxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] This example illustrates a method for preparing graphene oxide grafted carbon fibers based on the chemical reaction of mercaptoene provided by the present invention.

[0015] Step 1: Put 4g of carbon fiber into 150mL of hydrogen peroxide with a mass percent solubility of 30%, then react in an oil bath at 80°C for 1 hour, wash the resulting product with deionized water 4 times, and dry it in vacuum at 110°C Dry in the box for 24 hours to obtain oxidized carbon fiber;

[0016] The second step: put 4g of oxidized carbon fiber into a round bottom flask, add 150mL of a mixed solution of ethanol and mercaptopropyltriethoxysilane with a volume ratio of 95:5, adjust the pH of the solution to 4 with acetic acid, and then The reaction was carried out under the condition of an oil bath at ℃ for 6 hours. After the reaction, the product was washed 4 times with a mixed solution of ethanol and deionized water, and dried in a vacuum oven at 100 ℃ for 24 hours to obtain mercapto-functio...

Embodiment 2

[0020] This example illustrates a method for preparing graphene oxide grafted carbon fibers based on the chemical reaction of mercaptoene provided by the present invention.

[0021] Step 1: Put 4g of carbon fiber into 50mL of hydrogen peroxide with a mass percent solubility of 30%, then react in an oil bath at 50°C for 3 hours, wash the resulting product with deionized water for 4 times, and dry it under vacuum at 110°C Dry in the box for 24 hours to obtain oxidized carbon fiber;

[0022] The second step: put 4g of oxidized carbon fiber into a round bottom flask, add 50mL of a mixed solution of ethanol and 2-mercaptoethyltriethoxysilane with a volume ratio of 95:5, adjust the pH of the solution to 6 with acetic acid, and then React in an oil bath at 60°C for 8 hours. After the reaction, the product is washed 4 times with a mixed solution of ethanol and deionized water, and dried in a vacuum oven at 100°C for 24 hours to obtain mercapto-functionalized carbon fibers;

[0023] S...

Embodiment 3

[0026] This example illustrates a method for preparing graphene oxide grafted carbon fibers based on the chemical reaction of mercaptoene provided by the present invention.

[0027] Step 1: Put 4g of carbon fiber into 100mL of hydrogen peroxide with a mass percent solubility of 30%, then react in an oil bath at 70°C for 2 hours, wash the resulting product with deionized water 4 times, and dry it under vacuum at 110°C Dry in the box for 24 hours to obtain oxidized carbon fiber;

[0028] Step 2: Put 4g of oxidized carbon fiber into a round bottom flask, add 100mL of a mixed solution of ethanol and mercaptopropyltrimethoxysilane with a volume ratio of 95:5, adjust the pH of the solution to 5 with acetic acid, and then React under oil bath conditions for 7 hours. After the reaction, the product is washed 4 times with a mixed solution of ethanol and deionized water, and dried in a vacuum oven at 100°C for 24 hours to obtain mercapto-functionalized carbon fibers;

[0029] Step 3: A...

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PUM

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Abstract

The invention discloses a method for preparing graphene oxide grafted carbon fiber based on a thiol-ene chemical reaction. The method particularly comprises the steps that firstly, the surface of carbon fiber is oxidized with hydrogen peroxide, then a sulfydryl-containing silane coupling agent is introduced into the surface of carbon fiber obtained after oxidizing treatment, and then the obtainedsulfydryl-based functional carbon fiber is mixed with sulfydryl-based functional graphene oxide and divinyl ether compounds, the thiol-ene chemical reaction is triggered under ultraviolet irradiation,and graphene oxide grafted carbon fiber is finally obtained. Accordingly, the reaction steps are simple and controllable, the reaction condition is mild, and the requirements of environmental protection are met. After the carbon fiber is grafted onto graphene oxide, the surface roughness is obviously improved, and meanwhile the wettability with matrix resin is significantly improved, the interface performance of composites is improved conveniently, and then the overall mechanical property of the composites is improved.

Description

technical field [0001] The invention relates to a method for preparing graphene oxide grafted carbon fiber based on mercaptoene chemical reaction. Background technique [0002] Carbon fiber-reinforced resin-based composites have the characteristics of light weight, high strength, fatigue resistance, corrosion resistance, and good designability. They have been widely used in aerospace, national defense, new energy, and transportation. However, due to the high inertia of the carbon fiber surface, low surface activity, and poor wettability and adhesion with the resin matrix, it is easy to form defects at the interface of the composite material during compounding, which is an important factor that limits the high performance of carbon fiber reinforced resin matrix composites. one of the reasons. An important way to solve this problem is to carry out graft modification on the surface of carbon fiber. At present, there are many researches on this direction, but the traditional ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74D06M13/175D06M101/40
CPCD06M11/74D06M13/175D06M2101/40
Inventor 熊磊詹凤刘芳
Owner 江西国计纳米科技有限公司
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