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Preparation method of titanium-dioxide-modified carbon-fiber-reinforced resin-base composite material

A fiber-reinforced resin and titanium dioxide technology is applied in the field of preparation of titanium dioxide-modified carbon fiber-reinforced resin-based composite materials, which can solve the problems of insufficient synergy, insufficient reinforcement effect, and inability to ensure uniformity, etc. Chemical properties, excellent mechanical strength, the effect of increasing surface roughness and specific surface area

Active Publication Date: 2016-05-25
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that the uniformity of the two cannot be guaranteed by mixing the particles and fibers by mechanical means, the synergy between the two is not fully reflected, and the reinforcement effect is not obvious enough

Method used

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  • Preparation method of titanium-dioxide-modified carbon-fiber-reinforced resin-base composite material
  • Preparation method of titanium-dioxide-modified carbon-fiber-reinforced resin-base composite material
  • Preparation method of titanium-dioxide-modified carbon-fiber-reinforced resin-base composite material

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preparation example Construction

[0029] A preparation method of titanium dioxide modified carbon fiber reinforced resin-based composite material, comprising the following steps:

[0030] Step 1: In terms of parts by mass, take 20-30 parts of deionized water, add concentrated hydrochloric acid (concentration: 12mol / L) dropwise to it to pH=-0.4-3 to obtain an acidic solution, and then add 1-3 parts of titanium Tetrabutyl nitrate is added to the acidic solution to obtain mixed solution A, and 0.05 to 0.2 parts of carbon fibers pretreated by concentrated nitric acid are added to mixed solution A to obtain mixed solution B. The method for pretreating carbon fibers with concentrated nitric acid is: Concentrated nitric acid (concentration: 16mol / L) was condensed and refluxed for 6 hours under the condition of 80°C oil bath (silicone oil);

[0031] Step 2: Transfer the mixed solution B into the lining of the hydrothermal kettle and install the hydrothermal kettle in a homogeneous hydrothermal instrument, and perform ...

Embodiment 1

[0035] Step 1: In terms of parts by mass, take 30 parts of deionized water, add concentrated hydrochloric acid to it to pH=1 to obtain an acidic solution, then add 1 part of tetrabutyl titanate to the acidic solution to obtain a mixed solution A, and add 0.1 parts of The carbon fiber pretreated by concentrated nitric acid is added to the mixed solution A to obtain the mixed solution B, wherein the method of pretreating the carbon fiber with concentrated nitric acid is as follows: the carbon fiber is condensed and refluxed with concentrated nitric acid for 6 hours under the condition of an oil bath (silicone oil) at 80°C;

[0036] Step 2: Transfer the mixed solution B into the lining of the hydrothermal kettle and install the hydrothermal kettle in a homogeneous hydrothermal instrument, and perform a homogeneous hydrothermal reaction at a temperature of 110°C for 5 hours. After the reaction is completed, naturally cool to room temperature, and the obtained Carbon fibers are wash...

Embodiment 2

[0039] Step 1: In terms of parts by mass, take 25 parts of deionized water, add concentrated hydrochloric acid to it to pH = 2 to obtain an acidic solution, then add 2 parts of tetrabutyl titanate to the acidic solution to obtain a mixed solution A, and add 0.1 parts of The carbon fiber pretreated by concentrated nitric acid is added to the mixed solution A to obtain the mixed solution B, wherein the method of pretreating the carbon fiber with concentrated nitric acid is as follows: the carbon fiber is condensed and refluxed with concentrated nitric acid for 6 hours under the condition of an oil bath (silicone oil) at 80°C;

[0040] Step 2: Transfer the mixed solution B into the lining of the hydrothermal kettle and install the hydrothermal kettle in a homogeneous hydrothermal instrument, and perform a homogeneous hydrothermal reaction at a temperature of 150 °C for 6 hours. After the reaction is completed, naturally cool to room temperature, and the obtained Carbon fibers are ...

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Abstract

The invention discloses a preparation method of a titanium-dioxide-modified carbon-fiber-reinforced resin-base composite material. The preparation method comprises the following steps: pretreating carbon fibers with concentrated nitric acid under certain conditions, and carrying out hydrothermal reaction on the pretreated carbon fibers and a titanium source in a water solution using concentrated hydrochloric acid as an acidic medium; and after the reaction finishes, sufficiently washing the modified fibers, drying, and preparing the reinforced resin-base composite material by using the modified carbon fibers as reinforcing fibers. The tensile strength of the modified carbon-fiber-reinforced resin-base composite material is enhanced by 134.8-153.1%; the porosity is reduced from 45.7-40.5% to 19.3%-15.6%; the pore size distribution is uniform; and the friction factor of the reinforced resin-base composite material is kept at 0.12-0.14, and the abrasion loss is lowered by 37.1-50.3%, thereby sufficiently embodying the excellent friction reduction action of the modified carbon fibers applied to a wet friction material.

Description

technical field [0001] The invention belongs to the field of wet friction materials, and in particular relates to a preparation method of a titanium dioxide modified carbon fiber reinforced resin-based composite material. Background technique [0002] Carbon fiber reinforced resin matrix composites are widely used in engineering materials because of their excellent properties such as high specific strength and specific modulus, fatigue resistance, corrosion resistance, and strong designability. However, the surface of carbon fiber is inert, does not have a rich network branch structure, its performance is poor in the direction perpendicular to the fiber, and the interface with the resin is not ideal, which limits the use of resin-based composites in harsh environments and special fields to a certain extent. in the application. Therefore, appropriate physical or chemical modification is carried out on carbon fiber to improve its bonding strength with the resin matrix and fur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/02C08K7/06C08L61/06C08L97/02C08L77/10C08L9/02C08J5/06
CPCC08J5/06C08J2361/06C08J2497/02C08L61/06C08L2205/035C08L2205/16C08L97/02C08L77/10C08L9/02C08K9/02C08K7/06
Inventor 费杰张超黄剑锋曹丽云罗丹欧阳海波段笑
Owner SHAANXI UNIV OF SCI & TECH
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