Method for preparing silicon carbide reinforced carbon cloth based composite friction material

A composite friction material and silicon carbide technology, which is applied in the field of preparation of silicon carbide reinforced carbon cloth-based composite friction materials, can solve problems such as brake failure and reduced performance, and achieve improved friction performance, uniform coating, and reduced temperature. Effect

Active Publication Date: 2014-06-04
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, using carbon / carbon material alone as a friction material tends to fail due to oxidation at 700°C, and it is easy to cause braking failure in a humid environment, thereby greatly reducing the performance

Method used

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  • Method for preparing silicon carbide reinforced carbon cloth based composite friction material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1: Take 1.5g of 2123 phenolic resin and dissolve it in 150ml of absolute ethanol to obtain a phenolic resin solution. After the phenolic resin is fully dissolved, let it stand for 22 hours, seal it and store it to obtain a solution;

[0024] Step 2: Cut the PAN-based carbon cloth into 2cm×2cm squares, place it in an acetone solution for ultrasonic cleaning for 8 minutes, then dry it in an oven at 60°C, and put the dried carbon cloth into A solution for ultrasonic impregnation After 5 minutes, take it out and set aside;

[0025] Step 3: Take 0.3g of 300-mesh silicon powder, use ethylene glycol as a dispersant, disperse the silicon powder in 100ml of ethylene glycol and magnetically stir for 6 hours to obtain B suspension;

[0026] Step 4: Pour the B suspension into the four-necked flask of the UVave-1000 microwave ultraviolet ultrasonic synthesizer, and soak the carbon cloth obtained in Step 2 in the B suspension;

[0027] Step 5: Turn on the UVave‐1000 microwave u...

Embodiment 2

[0029] Step 1: Take 1.5g of 2123 phenolic resin and dissolve it in 150ml of absolute ethanol to obtain a phenolic resin solution. After the phenolic resin is fully dissolved, let it stand for 26 hours, seal it and store it to obtain a solution;

[0030] Step 2: Cut the PAN-based carbon cloth into a 2cm×2cm square, place it in an acetone solution for ultrasonic cleaning for 10 minutes, dry it in an oven at 80°C, and put the dried carbon cloth into A solution for ultrasonic impregnation After 10 minutes, take it out and set aside;

[0031] Step 3: Take 0.5g of 300-mesh silicon powder, use ethylene glycol as a dispersant, disperse the silicon powder in 100ml of ethylene glycol and magnetically stir for 8 hours to obtain B suspension;

[0032] Step 4: Pour the B suspension into the four-necked flask of the UVave-1000 microwave ultraviolet ultrasonic synthesizer, and soak the carbon cloth obtained in Step 2 in the B suspension;

[0033] Step 5: Turn on the UVave‐1000 microwave ult...

Embodiment 3

[0036] Step 1: Take 2.25g of 2123 phenolic resin and dissolve it in 150ml of absolute ethanol to obtain a phenolic resin solution. After the phenolic resin is fully dissolved, let it stand for 28 hours, seal it and store it to obtain a solution;

[0037] Step 2: Cut the PAN-based carbon cloth into a 2cm×2cm square, place it in an acetone solution for ultrasonic cleaning for 12 minutes, then dry it in an oven at 90°C, and put the dried carbon cloth into A solution for ultrasonic impregnation After 20 minutes, take it out and set aside;

[0038] Step 3: Take 0.8g of 300-mesh silicon powder, use ethylene glycol as a dispersant, disperse the silicon powder in 100ml of ethylene glycol and magnetically stir for 10 hours to obtain B suspension;

[0039]Step 4: Pour the B suspension into the four-necked flask of the UVave-1000 microwave ultraviolet ultrasonic synthesizer, and soak the carbon cloth obtained in Step 2 in the B suspension;

[0040] Step 5: Turn on the UVave‐1000 microwa...

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Abstract

The invention discloses a method for preparing a silicon carbide reinforced carbon cloth based composite friction material. The method comprises the steps of dissolving phenolic resin in absolute ethyl alcohol to obtain an A solution; placing polyacrylonitrile (PAN)-based carbon in an acetone solution for ultrasonic cleaning and then drying, and placing a dried carbon cloth into the A solution for ultrasonic immersing; dispersing silicon powder in ethylene glycol and conducting magnetic stirring to obtain a B suspension liquid; pouring the B suspension liquid into a four-opening flask of a microwave ultraviolet ultrasonic synthesizer, and immersing the carbon cloth in the B suspension liquid; and starting the microwave ultraviolet ultrasonic synthesizer, starting an ultraviolet lamp to irradiate a reaction after the reaction temperature reaches the set temperature, taking out a sample after the reaction is finished and cooled down to the room temperature, and placing the sample in an oven for drying to obtain the silicon carbide reinforced carbon cloth based composite friction material. According to the silicon carbide reinforced carbon cloth based composite friction material, the silicon powder serves as a raw material, the carbon cloth serves as a substrate, a silicon carbide layer can be prepared on the surface of the carbon cloth at a low temperature, the reaction time for preparation of silicon carbide in traditional processes can be shortened, resin can permeate into the carbon cloth substrate effectively for curing, and the friction performance of the friction material can be improved.

Description

technical field [0001] The invention relates to a preparation method of a friction material, in particular to a preparation method of a silicon carbide reinforced carbon cloth-based composite friction material. Background technique [0002] Friction materials are divided into dry friction materials and wet friction materials according to the use environment. Wet friction materials refer to friction materials that work in lubricating media (mainly lubricating oil), and are mainly used in wet transmission systems such as automatic transmissions, differentials, torque managers and synchronizers [P.Marklund, R.Larsson.Tribology International, 2008, 41:824–830.]. Due to different conditions of use, the speed, pressure and load of the transmission system are very different. It is difficult for a single material to meet the requirements of all working conditions, so a variety of wet friction materials have been developed, mainly including cork rubber-based friction materials and p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/14C08J3/28C08L61/06C08K3/34
Inventor 王文静黄剑锋费杰曹丽云
Owner SHAANXI UNIV OF SCI & TECH
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