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A nano-toughened carbon fiber composite material and preparation method thereof

A composite material and carbon fiber technology, applied in the direction of nanotechnology, carbon compound, nanotechnology, etc., can solve the problems of modulus decrease, composite material heat resistance decrease, etc., achieve the effect of increasing toughness, improving poor dispersion, and simple method

Active Publication Date: 2017-07-28
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, modification by traditional methods such as thermoplastic resin and rubber particles can improve the toughness of the composite material, but it will lead to a series of problems such as the decrease of the heat resistance and the decrease of the modulus of the composite material.

Method used

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  • A nano-toughened carbon fiber composite material and preparation method thereof
  • A nano-toughened carbon fiber composite material and preparation method thereof
  • A nano-toughened carbon fiber composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] An active graphene halloysite nanotube composite film used for interlayer toughening of prepregs, the composite film is composed of graphene and halloysite nanotubes according to the following steps, and the specific preparation method is as follows:

[0048] a) React 10 g of the purchased halloysite nanotubes with 300 ml of hydrochloric acid with a concentration of 1 mol / L for 24 hours, and let stand for 1 day. Pour off the supernatant, centrifuge with distilled water to pH=6.0, dry at 60°C, and grind to obtain powder I.

[0049] b) Add 300ml of 1mol / L sodium chloride solution to powder I, stir for 48 hours, then centrifuge with distilled water until no chloride ions are contained (tested with silver nitrate), dry at 105°C, and grind to obtain powder II.

[0050] c) Take 5g of powder II and add 250ml of 0.014mol / L cetyltrimethylammonium bromide, stir in an oil bath at 60°C for 12h, centrifuge with ethanol, dry at 90°C, and grind to obtain the modified grafted long chain ...

Embodiment 2

[0068] An active graphene / halloysite nanotube composite film used for interlayer toughening of prepregs, the composite film is composed of graphene and halloysite nanotubes according to the following steps, and the specific preparation method is as follows:

[0069] k) React 10 g of the purchased halloysite nanotubes with 300 ml of hydrochloric acid with a concentration of 1 mol / L for 24 hours, and let stand for 1 day. Pour off the supernatant, centrifuge with distilled water to pH=6.0, dry at 60°C, and grind to obtain powder I.

[0070] l) Add 300ml of 1mol / L sodium chloride solution to powder I, stir for 48 hours, then centrifuge with distilled water until no chloride ions are contained (tested with silver nitrate), dry at 105°C, and grind to obtain powder II.

[0071] m) Take 5g of powder II and add 250ml of 0.014mol / L cetyltrimethylammonium bromide, stir in an oil bath at 60°C for 12h, centrifuge with ethanol, dry at 90°C, and grind to obtain the modified grafted long chai...

Embodiment 3

[0087] An active graphene / halloysite nanotube composite film used for interlayer toughening of prepregs, the composite film is composed of graphene and halloysite nanotubes according to the following steps, and the specific preparation method is as follows:

[0088] a) React 10 g of the purchased halloysite nanotubes with 300 ml of hydrochloric acid with a concentration of 1 mol / L for 24 hours, and let stand for 1 day. Pour off the supernatant, centrifuge with distilled water to pH=6.0, dry at 60°C, and grind to obtain powder I.

[0089] b) Add 300ml of 1mol / L sodium chloride solution to powder I, stir for 48 hours, then centrifuge with distilled water until no chloride ions are contained (tested with silver nitrate), dry at 105°C, and grind to obtain powder II.

[0090] c) Take 5g of powder II and add 250ml of 0.014mol / L cetyltrimethylammonium bromide, stir in an oil bath at 60°C for 12h, centrifuge with ethanol, dry at 90°C, and grind to obtain the modified grafted long chai...

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Abstract

The invention provides a nano-toughened carbon fiber composite material and a preparation method thereof, and belongs to the technical field of carbon fiber composite materials. The carbon fiber composite material is formed by die-pressing and curing 16-20 layers of prepreg, one layer of activated graphene and halloysite nanotube composite thin film and one layer of activated carbon nanotube and halloysite nanotube composite thin film, wherein the activated graphene and halloysite nanotube composite thin film is prepared from 10%-15% of aminated graphene, 70%-80% of benzyl glycidyl ether and 10%-15% of modified halloysite nanotubes grafted with long-chain polymers, and the activated carbon nanotube and halloysite nanotube composite thin film is prepared from 10%-15% of carbon nanotubes, 70%-80% of benzyl glycidyl ether and 10%-15% of modified halloysite nanotubes grafted with long-chain polymers. According to the nano-toughened carbon fiber composite material and the preparation method thereof, the defects in the prior art are overcome, multi-dimension and multi-scale reinforcing and toughening of the carbon fiber composite material are achieved, and the mechanical property of the carbon fiber composite is greatly improved.

Description

[0001] Technical field: [0002] The invention relates to the technical field of carbon fiber composite materials, in particular to a carbon fiber composite material in which a graphene / halloysite nanotube film and a carbon nanotube / halloysite nanotube film are synergistically toughened. [0003] Background technique: [0004] Graphene is a single-layer two-dimensional planar structure in which carbon atoms are closely arranged in a regular hexagon to form a honeycomb lattice. It has strong electrical conductivity and high strength. Due to its low surface activation energy, the original graphene sheet cannot be well infiltrated with the polymer to achieve good dispersion, which eventually leads to a decrease in the performance of the reinforced composite material. [0005] Since the discovery of carbon nanotubes by Japanese scientists in 1991, their preparation methods, properties and applications have been extensively studied. The diameter of carbon nanotubes is 2-20nm, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/00B32B9/04B32B33/00B32B37/10C01B33/40C01B32/174C01B32/194B82Y30/00
CPCB32B5/02B32B5/26B32B9/007B32B9/04B32B9/047B32B33/00B32B37/10B32B2260/02B32B2262/106B32B2307/54B32B2307/542B32B2307/558C01B33/40
Inventor 隋刚吴剑桥郭健张清杰李浩杨小平
Owner BEIJING UNIV OF CHEM TECH
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