A preparation method of burning oxidized carbon fiber reinforced phenolic resin friction composite material

A phenolic resin, fiber reinforced technology is applied in the field of preparation of sintered carbon oxide fiber reinforced phenolic resin friction composite materials, which can solve the problems of human health hazards, cumbersome steps, limitations, etc. The effect of improving tribological properties

Active Publication Date: 2021-02-12
CHANGCHUN UNIV OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

The Chinese patent of CN104532548A uses a method of growing CNTS in situ on the surface of carbon fibers to improve the interlaminar shear strength of composite materials, but the steps of this experiment are cumbersome, the operation is difficult, and the practical application is limited
Chinese Patent Utilization of CN1206760 60 Coγ-rays irradiate carbon fibers in the air, increase the surface roughness of carbon fibers, generate active functional groups, and improve the wettability between carbon fibers and resins, but this method is costly and easily harmful to human health
Chinese patent CN106555358A utilizes p-aminobenzoic acid non-destructively modified carbon fiber reinforced paper-based wet friction material to improve the bonding force between carbon fiber and resin, but this method has complicated operation process, high cost and heavy pollution, which is not conducive to the sustainable development of the industry

Method used

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  • A preparation method of burning oxidized carbon fiber reinforced phenolic resin friction composite material
  • A preparation method of burning oxidized carbon fiber reinforced phenolic resin friction composite material
  • A preparation method of burning oxidized carbon fiber reinforced phenolic resin friction composite material

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preparation example Construction

[0025] A method for preparing a burning carbon fiber reinforced phenolic resin friction composite material, comprising the following steps:

[0026] Step 1: Burn the carbon fiber with butane gas for 0-60min, and fix the distance between the muzzle and the carbon fiber at 5-8cm. After the reaction is over, wash the carbon fiber sample with deionized water and dry it at 70°C to obtain the surface Activated carbon fiber.

[0027] Step 2: the modified β-Si 3 N 4 , phenolic resin, and H256 curing agent are mixed in ethanol according to the mass ratio of 1-5:80-90:5-10 to make a mixed phenolic resin ethanol solution.

[0028] Step 3: Immerse the burned carbon fiber in step 1 in the ethanol solution of mixed resin in step 2, wherein the mass ratio of burned carbon fiber to mixed resin is 30-40:60-70, so that it can penetrate evenly In the fired carbon fiber. Take out the impregnated carbon fiber cloth and put it in an oven, remove the ethanol solvent at 70°C to obtain the ignited...

Embodiment 1

[0030] Step 1: Reflux 8g of carbon fibers with acetone to remove surface pollutants and sizing agents, wash them with deionized water and dry them. Then, the carbon fiber was burned with butane gas for 10 minutes, and the distance between the muzzle and the carbon fiber was fixed at 5 cm. After the reaction, the carbon fiber sample was washed with deionized water and dried at 70°C to obtain surface-activated carbon fiber.

[0031] Step 2: Add 0.4g of modified β-Si 3 N 4 , 17.6g phenolic resin, 2g H256 curing agent mixed in 50mL ethanol to make a mixed phenolic resin ethanol solution.

[0032] Step 3: Immerse the burned carbon fiber in step 1 in the mixed resin ethanol solution in step 2, wherein the mass ratio of burned carbon fiber to mixed resin is 40:60, so that it can evenly penetrate into the burned in carbon fiber. Take out the impregnated carbon fiber cloth and put it into an oven, remove the ethanol solvent at 70°C to obtain a carbon fiber reinforced phenolic resin ...

Embodiment 2

[0034] Step 1: Reflux 8g of carbon fibers with acetone to remove surface pollutants and sizing agents, wash them with deionized water and dry them. Then, the carbon fiber was burned with butane gas for 60 minutes, and the distance between the muzzle and the carbon fiber was fixed at 8 cm. After the reaction, the carbon fiber sample was washed with deionized water and dried at 70°C to obtain surface-activated carbon fiber.

[0035] Step 2: Add 0.4g of modified β-Si 3 N 4 , 17.6g phenolic resin, 2g H256 curing agent mixed in 50mL ethanol to make a mixed phenolic resin ethanol solution.

[0036] Step 3: Immerse the burned carbon fiber in step 1 in the mixed resin ethanol solution in step 2, wherein the mass ratio of burned carbon fiber to mixed resin is 40:60, so that it can evenly penetrate into the burned in carbon fiber. Take out the impregnated carbon fiber cloth and put it in an oven at 70°C to remove the ethanol solvent to obtain a carbon fiber reinforced phenolic resin ...

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Abstract

The invention discloses a method for preparing an oxidized carbon fiber-reinforced phenolic resin friction composite material by a burning method. First, the carbon fibers are burned with butane gas for 5-60 minutes to obtain carbon fibers with a large number of oxygen-containing functional groups such as -COOH and -OH on the surface. . The calcined carbon fibers were then combined with APTES-modified β-Si 3 N 4 , phenolic resin and curing agent (H256) are mixed with pre-dipping liquid in a mass ratio of 30-40:60-70. After removing the solvent from the prepreg, hot-press curing at a temperature of 130-150° C., a hot-pressing time of 20 minutes, and a pressure of 5 MPa to obtain a fired carbon oxide fiber / phenolic resin friction composite material. The sample was subjected to friction and wear test, and its thermal conductivity was 3.06W m ‑1 k ‑1 , the coefficient of kinetic friction reaches 0.13, and the wear rate is as low as 1.14×10 ‑8 mm 3 / Nm. The friction composite material exhibits excellent tribological properties, and has a simple preparation process, low cost and no pollution.

Description

technical field [0001] The invention relates to the technical field of friction composite materials, in particular to a preparation method of burning oxidized carbon fiber reinforced phenolic resin friction composite materials. Background technique [0002] Carbon fiber friction composite materials are widely used in transportation tools such as automobiles, ships, and airplanes because of their advantages such as light weight, low noise, and stable friction coefficient. However, due to the smooth surface and high graphitization of carbon fiber, the surface is inert, resulting in poor wettability between carbon fiber and phenolic resin, which greatly limits the application of carbon fiber in friction composite materials. Therefore, it is an inevitable trend to modify the surface of carbon fiber. In the present invention, the butane flame is used to burn the carbon fiber under the conditions of a certain time and distance, so that the surface of the carbon fiber reacts in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/06C08K9/00C08K7/06C08K3/34C09K3/14
CPCC08K3/34C08K7/06C08K9/00C09K3/14C08L61/06
Inventor 敖玉辉樊春雷尚垒刘浏张孟杰
Owner CHANGCHUN UNIV OF TECH
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