Preparation method of epoxy resin composite material strengthened by in situ growth of CNT (carbon nano tube) on surface of quartz fibre

A technology of in-situ growth and epoxy resin, applied in the field of nanomaterials, can solve the problems of carbon nanotube dispersed interface bonding, carbon nanotube reinforced polymer effect is not good, etc., to improve the insufficient interlayer shear strength, preparation method Simple and easy to implement, the effect of improving comprehensive mechanical properties

Inactive Publication Date: 2012-01-25
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But as far as the current reports are concerned, the effect of carbon nanotube-reinforced polymers is basically not good, and there is still a big gap from the expected reinforcement effect, which is mainly caused by the dispersion and interface bonding of carbon nanotubes.

Method used

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  • Preparation method of epoxy resin composite material strengthened by in situ growth of CNT (carbon nano tube) on surface of quartz fibre
  • Preparation method of epoxy resin composite material strengthened by in situ growth of CNT (carbon nano tube) on surface of quartz fibre
  • Preparation method of epoxy resin composite material strengthened by in situ growth of CNT (carbon nano tube) on surface of quartz fibre

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Experimental program
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Effect test

Embodiment 1

[0034] Configure 0.1mol / L Ni(NO 3 ) 2 Aqueous solution (absolute ethanol and isopropanol can also be used as the solvent), and the surface of the quartz fiber is covered with a catalyst layer by the impregnation method. Put it into a tube furnace and feed it with Ar, and heat it up. When the temperature rises to the set value (650°C), C 2 h 2 With a certain flow rate (Ar / C 2 h 2 =20: 1) Pass in, react for 5min, close C 2 h 2 , Ar cooled the tube furnace at a flow rate of 800mL / min. When the temperature dropped to room temperature, the black quartz fiber cloth was taken out. The obtained carbon nanotubes have an average diameter of 50 nm and a length of about 300 nm. The 15 pieces of fiber cloth obtained above were introduced into the fiber cloth by the vacuum-assisted resin transfer molding process, and the uniformly mixed epoxy resin and curing agent were heated up, and cured at 110°C for 3 hours, and the carbon nanotube fiber epoxy composite material was finally obtai...

Embodiment 2

[0038] Configure 0.1mol / L Ni(NO 3 ) 2 Aqueous solution, the surface of the quartz fiber is covered with a layer of catalyst by impregnation method. Put it into a tube furnace and feed it with Ar, and heat it up. When the temperature rises to the set value (650°C), C 2 h 2 With a certain flow rate (Ar / C 2 h 2 =20:1) Pass in, react for 60min, close C 2 h 2 , Ar cooled the tube furnace at a flow rate of 800mL / min. When the temperature dropped to room temperature, the black quartz fiber cloth was taken out. The obtained carbon nanotubes have an average diameter of 50 nm and a length of about 1 μm. The 15 pieces of fiber cloth obtained above were introduced into the fiber cloth by the vacuum-assisted resin transfer molding process, and the uniformly mixed epoxy resin and curing agent were heated up, and cured at 110°C for 3 hours, and the carbon nanotube fiber epoxy composite material was finally obtained. The scanning electron micrographs of the interlayer shear of the com...

Embodiment 3

[0043] Configure 0.5mol / L Ni(NO 3 ) 2 Aqueous solution, the surface of the quartz fiber is covered with a layer of catalyst by impregnation method. Put it into a tube furnace and feed it with Ar, and heat it up. When the temperature rises to the set value (650°C), C 2 h 2 With a certain flow rate (Ar / C 2 h 2 =20:1) Pass in, react for 60min, close C 2 h 2 , Ar was used to cool the tube furnace at a flow rate of 800mL / min. When the temperature dropped to room temperature, the black quartz fiber cloth was taken out. The obtained carbon nanotubes have an average diameter of 45 nm and a length of about 500 nm. The 15 pieces of fiber cloth obtained above were introduced into the fiber cloth by vacuum-assisted resin transfer molding process, and the uniformly mixed epoxy resin and curing agent were heated up and cured at 110°C for 3 hours to finally obtain the carbon nanotube fiber epoxy composite material.

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Abstract

The invention discloses a preparation of an epoxy resin composite material strengthened by in situ growth of CNT (carbon nano tube) on the surface of quartz fiber. The preparation method comprises the following steps of: arranging a layer of catalyst particles on the surface of quartz fiber, and decomposing a carbon source under the catalysis of the catalyst by using a CVD (Chemical Vapor Deposition) method to obtain the quartz fiber with a CNT array evenly growing on the surface; completely mixing epoxy resin and a curing agent under the conditions of ultrasonic oscillation and high-speed stirring; and compounding the quartz fiber with a CNT array evenly growing on the surface and the epoxy resin through VARTM (Vacuum Assisted Resin Transfer Molding). The interface adhesive strength of epoxy resin with the quartz fiber is improved, and the interlaminar shear strength property of the quartz fiber-CNT / epoxy resin composite material can be enhanced further.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of carbon nanotube-reinforced epoxy resin composite materials grown in situ on the surface of quartz fibers. Background technique [0002] Traditional glass fiber reinforced polymer matrix composites have been widely used. The interface structure of composite materials is an important factor affecting the transmission of stress and other information. The conventional method to improve the interfacial stress transmission of composite materials is to enhance the physical and chemical interactions at the interface. Although the physical and chemical modification of the reinforcement can improve the interface interaction between the reinforcement and the matrix to a certain extent, the effect of improving the interlaminar shear strength of the composite material is still not ideal, thus limiting this. The development of similar materials a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/08C08G59/40C08K9/02C08K7/14
Inventor 张玲李春忠金磊
Owner EAST CHINA UNIV OF SCI & TECH
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