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Graphene-carbon nanotube composite fiber felt and preparation method thereof

A carbon nanotube composite and carbon nanotube fiber technology, applied in the field of fiber felt, can solve the problems of incompetence, poor interface bonding strength, etc., and achieve strong tensile strength and bending strength, strong interface bonding force, and high mechanical strength. Effect

Inactive Publication Date: 2019-09-13
深圳前海量子翼纳米碳科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although there have been many studies on carbon fiber-based composite materials, there is a problem of poor interfacial bonding strength between carbon fiber itself and polymer materials, and the formed composite materials are not competent when used in occasions that require high strength.

Method used

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  • Graphene-carbon nanotube composite fiber felt and preparation method thereof
  • Graphene-carbon nanotube composite fiber felt and preparation method thereof

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preparation example Construction

[0021] The first aspect of the present invention provides a kind of preparation method of graphene-carbon nanotube composite fiber felt, comprises the steps:

[0022] (1) treating the graphene-carbon nanotube composite fiber with a silane coupling agent to obtain a modified composite fiber;

[0023] (2) arranging the modified fiber into a felt shape, and impregnating it with a sizing agent to obtain a sizing-treated composite fiber;

[0024] (3) Hot pressing the sizing-treated composite fibers to obtain a graphene-carbon nanotube composite fiber mat.

[0025] In a preferred embodiment, the preparation method of the graphene-carbon nanotube composite fiber mat comprises the steps of:

[0026] (1) Treating the graphene-carbon nanotube composite fiber with an aqueous solution of a silane coupling agent for 10 to 20 seconds, and then drying at 100 to 120° C. for 10 to 30 seconds to obtain a modified composite fiber;

[0027] (2) arranging the modified fiber into a felt shape, an...

Embodiment 1

[0094] Embodiment 1 of the present invention provides a kind of graphene-carbon nanotube composite fiber felt, and its preparation method is as follows:

[0095] (1) Treat the graphene-carbon nanotube composite fiber with a concentration of 0.3wt% silane coupling agent aqueous solution for 15s, then dry it at 110°C for 20s to obtain the modified composite fiber;

[0096] (2) arrange the modified fiber into a felt, and impregnate it with a sizing agent for 20s to obtain a sizing-treated composite fiber;

[0097] (3) Carry out hot pressing to the composite fiber of sizing treatment, the temperature of hot pressing is 130 DEG C, the pressure is 0.25MPa, then dry at 110 DEG C for 3min, obtains the graphene-carbon nanotube composite fiber mat;

[0098] The length of graphene-carbon nanotube composite fiber is 35mm;

[0099] The silane coupling agent is γ-aminopropyltrimethoxysilane;

[0100] The raw materials for the preparation of the sizing agent include the first component and...

Embodiment 2

[0107] Embodiment 2 of the present invention provides a kind of graphene-carbon nanotube composite fiber felt, and its preparation method is as follows:

[0108] (1) Treating the graphene-carbon nanotube composite fiber with a concentration of 0.5wt% silane coupling agent aqueous solution for 20s, then drying at 120°C for 30s to obtain the modified composite fiber;

[0109] (2) arrange the modified fiber into a felt, and impregnate it with a sizing agent for 30s to obtain a sizing-treated composite fiber;

[0110] (3) Carry out hot pressing to the composite fiber of sizing treatment, the temperature of hot pressing is 140 ℃, the pressure is 0.4MPa, then dry 5min at 120 ℃, obtain graphene-carbon nanotube composite fiber mat;

[0111] The length of graphene-carbon nanotube composite fiber is 50mm;

[0112] The silane coupling agent is γ-aminopropyltrimethoxysilane;

[0113] The raw materials for the preparation of the sizing agent include the first component and the second com...

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Abstract

The invention belongs to the technical field of fiber felt, and particularly provides graphene-carbon nanotube composite fiber felt and a preparation method thereof. The invention firstly provides thepreparation method of the graphene-carbon nanotube composite fiber felt. The preparation method comprises the following steps: treating graphene-carbon nanotube composite fiber by a silane coupling agent to obtain modified composite fiber; finishing the modified fiber into a felt shape, and impregnating with a sizing agent to obtain sized composite fiber; performing hot pressing on the sized composite fiber to obtain the graphene-carbon nanotube composite fiber felt, wherein the length of the graphene-carbon nanotube composite fiber is 20-50mm.

Description

technical field [0001] The invention belongs to the technical field of fiber mats, and more specifically, the invention provides a graphene-carbon nanotube composite fiber mat and a preparation method thereof. Background technique [0002] Carbon fiber reinforced resin-based composite materials have many excellent characteristics such as low density, high specific strength, high specific modulus, fatigue resistance, corrosion resistance, integral molding and strong designability, and their comprehensive performance exceeds that of aluminum alloy and high-strength steel. Preferred material for component lightweighting applications. Carbon fiber is widely used in various fields because of its excellent mechanical and electrical properties. [0003] Carbon fiber felt is a sheet-like product that is non-directionally bonded together by continuous carbon fiber precursors or chopped carbon fiber precursors through chemical bonding or mechanical action. Combining carbon fiber fel...

Claims

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Application Information

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IPC IPC(8): D06M13/513D06M15/263D06M15/356D04H1/541D06M101/40
CPCD04H1/541D06M13/513D06M15/263D06M15/356D06M2101/40
Inventor 童潇
Owner 深圳前海量子翼纳米碳科技有限公司
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