Preparation method of carbon nano-tube grafted glass fiber fabric reinforcement

A carbon nanotube and glass fiber technology, used in fiber processing, textiles and papermaking, etc., can solve the problem of carbon nanotubes being difficult to uniformly disperse, and achieve the effects of improved tensile strength, good molding processability, and improved modulus.

Inactive Publication Date: 2014-10-08
HOHAI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of carbon nanotube grafted glass fiber reinforcement, which solves the difficulty of uniform dispersion of carbon nanotubes in composite materials and the existence of carbon nanotubes in the vacuum infusion molding process being blocked by glass fiber fabrics Agglomeration problems caused by filtration or filtration, improve the uniformity and performance stability of composite materials

Method used

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  • Preparation method of carbon nano-tube grafted glass fiber fabric reinforcement

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) The area density is 400g / m 2 Glass fiber grid fabric (take 10 cm×10cm as an example), put it in an oven and bake it at 80±10°C for 2 hours;

[0026] (2) Under stirring conditions, slowly add 0.5g of epoxy silane grafting agent into 75% ethanol aqueous solution (100ml), adjust the pH=6±0.5 with 0.1% acetic acid, stir for 20min, and obtain the grafting agent solution;

[0027] (3) Slowly disperse 60 mg of hydroxyl carbon nanotubes in the above-mentioned grafting agent solution under ultrasonic vibration to obtain a grafting agent solution containing carbon nanotubes;

[0028] (4) Immerse the dried glass fiber fabric in the above carbon nanotube-containing grafting agent solution, put it in an oven at 100°C for 2 hours after immersion, and obtain a glass fiber composite reinforcement with surface grafted carbon nanotubes. The content of carbon nanotubes in the body is: 60mg / 100cm 2 glass fiber.

[0029] Compared with the glass fiber / epoxy composite material, the com...

Embodiment 2

[0031] (1) The area density is 1200g / m 2 Glass fiber grid fabric (take 10 cm×10cm as an example), put it in an oven and dry it at 80±10°C for 2 hours;

[0032] (2) Stir 3.0g of vinylsilane grafting agent, slowly add 75% ethanol aqueous solution (100ml), adjust pH=6±0.5 with 0.1% acetic acid, stir for 20min, and obtain grafting agent solution;

[0033] (3) Slowly disperse 100 mg of mercapto carbon nanotubes in the grafting agent solution under ultrasonic vibration to obtain a grafting agent solution containing carbon nanotubes.

[0034] (4) Put the above-mentioned grafting agent solution containing carbon nanotubes into a high-pressure watering can, then evenly spray it on the surface of the activated glass fiber, and dry it at 110°C for 2 hours to obtain a composite reinforcement of carbon nanotube-grafted glass fiber Medium carbon nanotube content: 100mg / 100cm 2 glass fiber. Immerse the above-mentioned dried glass fiber fabric in the above-mentioned grafting agent solution...

Embodiment 3

[0037] (1) The surface density is 100g / m 2 Glass fiber plain weave fabric (take 10 cm×10cm as an example), put it in an oven and dry it at 80±10°C for 2 hours;

[0038] (2) Stir 4.5g of diphenylmethane diisocyanate grafting agent, slowly add 10ml of benzene in acetone solution (100ml), stir well to obtain grafting agent solution;

[0039] (3) Slowly disperse 1900 mg of hydroxylated carbon nanotubes in the grafting agent solution under ultrasonic vibration to obtain a grafting agent solution containing carbon nanotubes.

[0040] (4) Immerse the above-mentioned dried glass fiber fabric in the above-mentioned grafting agent solution containing carbon nanotubes. After dipping for 8 seconds, put it in an oven at 80°C for 2 hours to obtain a glass fiber composite reinforcement with surface-grafted carbon nanotubes. The content of carbon nanotubes in the body is: 2100mg / 100cm 2 glass fiber.

[0041] The composite material prepared by grafting the above-mentioned carbon nanotubes w...

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Abstract

The invention relates to a preparation method of a carbon nano-tube grafted glass fiber fabric reinforcement. The method is characterized by comprising the following steps: (1) drying glass fiber fabric for later use; (2) dissolving a grafting agent in a solvent to prepare a 0.25-5% grafting agent solution; (3) dispersing the carbon nanotube in the grafting agent solution, ultrasonically dispersing to prepare the carbon nanotube dispersion liquid; (4) dipping the dried glass fiber fabric in the carbon nano-tube dispersion liquid, or uniformly spraying the carbon nanotube dispersion liquid on the surface of the dried glass fiber fabric to obtain the glass fiber fabric with carbon nanotube content of 20-2400mg / 100 cm <2>, and then reacting for 1-2 hours at 100+ / -20 DEG.C to obtain a compound reinforcement. The method can be used for preparing the fiber resin composite material containing the carbon nanotube and in particular can be used for solving the problem that the carbon nanotube is filtered and gathered in resin transfer forming process such as vacuum perfusion, and the uniformity and the performance stability of the composite material are improved.

Description

[0001] technical field [0002] The invention belongs to the technical field of fiber reinforced materials for composite materials, and in particular relates to a preparation method of a novel carbon nanotube grafted glass fiber reinforced body. Background technique [0003] Glass fiber is an inorganic fiber material with high specific strength and specific modulus. It is brittle and is the most commonly used composite material reinforcement. Carbon nanotubes are a typical one-dimensional material with a large aspect ratio, high strength and large elongation at break. According to reports, in 2010, Bayer MaterialScience Corporation of the United States received funding from the U.S. Department of Energy and began to explore the use of carbon nanotubes to reinforce polyurethane composite materials to manufacture larger, stronger, and lighter wind turbine blades above 1.5MW. Case Western Reserve University and Molded Fiberglass also participated in the research. In addition,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74C08L63/00C08J5/08
Inventor 申明霞韩永芹段鹏鹏曾少华陆凤玲王珠银
Owner HOHAI UNIV
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