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Pumping filtration-based preparation method of paper-based friction material

A paper-based friction material and solution technology, applied in the direction of synthetic cellulose/non-cellulose material pulp/paper, paper, papermaking, etc., can solve the problems of uneven interface bonding, poor wear resistance, and easy settlement, etc. Achieve the effects of not easy to settle, not easy to flocculate, and improve friction performance

Active Publication Date: 2014-01-29
盐城大数据资产经营管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the paper-based friction material mixture prepared by this method is made into a suspension, it is easy to settle and flocculate. The combination of various components is a physical bond, the interface is not very uniform, and the wear resistance is not good.

Method used

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  • Pumping filtration-based preparation method of paper-based friction material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1: Take 1.0 g of cashew nut shell oil modified phenolic resin, dissolve it in 60 mL of absolute ethanol to obtain a phenolic resin solution, wait for the phenolic resin to be fully dissolved and let it stand for 20 hours, seal it and store it to obtain a solution;

[0027] Step 2: Disperse 3 g of multi-walled carbon nanotubes with a diameter of 30-50 nm in 100 mL of a 0.1% sodium dodecylsulfonate (SDS) aqueous solution, and stir magnetically for 4 hours until the multi-walled carbon nanotubes are uniformly dispersed. Obtain suspension B;

[0028] Step 3: Add 8 g of chopped carbon fibers with a diameter of 8 to 15 μm, 7 g of bamboo fibers with a beating degree of 60°SR, 1 g of diatomaceous earth, and 40 mL of A solution into 100 mL of absolute ethanol, and disperse evenly to obtain a mixed solution. Take 100g of suspension B and pour it into the mixed solution to obtain C solution;

[0029] Step 4: Pour the C solution into the decomposer and disperse for 1000r, tak...

Embodiment 2

[0032] Step 1: Take 2g of cashew nut shell oil modified phenolic resin, dissolve it in 70mL of absolute ethanol to obtain a phenolic resin solution, wait for the phenolic resin to fully dissolve and let it stand for 25 hours, seal it and store it to obtain A solution;

[0033] Step 2: Disperse 4 g of multi-walled carbon nanotubes with a diameter of 30 to 50 nm in 200 mL of an aqueous solution of sodium dodecylsulfonate (SDS) with a mass concentration of 0.2%, and stir magnetically for 5 hours until the multi-walled carbon nanotubes are uniformly dispersed. Obtain suspension B;

[0034] Step 3: Add 9 g of chopped carbon fibers with a diameter of 8 to 15 μm, 8 g of bamboo fibers with a beating degree of 70°SR, 2 g of diatomaceous earth, and 50 mL of A solution into 200 mL of absolute ethanol, and disperse evenly to obtain a mixed solution. Take 200g of suspension B and pour it into the mixed solution to obtain C solution;

[0035] Step 4: Pour the C solution into the decomposer...

Embodiment 3

[0038] Step 1: Take 3g of cashew nut shell oil-modified phenolic resin and dissolve it in 80mL of absolute ethanol to obtain a phenolic resin solution. After the phenolic resin is fully dissolved, let it stand for 30 hours, seal it and store it to obtain A solution;

[0039] Step 2: Disperse 5 g of multi-walled carbon nanotubes with a diameter of 30-50 nm in 300 mL of 0.3% sodium dodecylsulfonate (SDS) aqueous solution, and stir magnetically for 5.5 hours until the multi-walled carbon nanotubes are uniformly dispersed. Obtain suspension B;

[0040] Step 3: Add 10g of chopped carbon fibers with a diameter of 8 to 15 μm, 9g of bamboo fibers with a beating degree of 80°SR, 3g of diatomaceous earth and 60mL of A solution into 300mL of absolute ethanol, and disperse evenly to obtain a mixed solution. Take 300g of suspension B and pour it into the mixed solution to obtain C solution;

[0041] Step 4: Pour the C solution into the decomposer and disperse for 1400r, take out the decompo...

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Abstract

The invention discloses a pumping filtration-based preparation method of a paper-based friction material. The pumping filtration-based preparation method comprises the following steps of dissolving cashew nut shell oil-modified phenolic resin in anhydrous ethanol to obtain a solution A, dispersing multi-walled carbon nanotubes in a sodium dodecyl sulfate aqueous solution to obtain a suspension liquid B, dispersing short carbon fibers, bamboo fibers, diatomite and the solution A in anhydrous ethanol, adding the suspension liquid B into the mixed solution to obtain a solution C, carrying out defibering on the solution C, carrying out suction filtration and drying to obtain a sample sheet, soaking the sample sheet in the solution A, taking out the sample sheet, carrying out drying in air, carrying out hot press molding to obtain the paper-based friction material obtained based on pumping filtration. The pumping filtration-based preparation method utilizes a pumping filtration process to replace a sheet making machine for friction material sheet formation, can prepare the single-layer paper-based friction material, has easily controlled processes, solves the problem that the existing paper-based friction material preparation technology can be carried out only in a water phase, is free of water use in the whole sheet formation process, greatly improves the friction performances of the paper-based friction material, and effectively reduces a wear rate.

Description

technical field [0001] The invention belongs to the field of friction materials, and relates to a method for preparing a paper-based friction material in an oil phase, in particular to a method for preparing a paper-based friction material based on suction filtration. Background technique [0002] 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 powder metallurgy friction materials. , paper-based friction ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H13/50D21H17/68D21H17/48D21H17/00
Inventor 黄剑锋李文斌杨朝王文静费杰曹丽云
Owner 盐城大数据资产经营管理有限公司
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