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Preparation method of nano-titanium enhanced paper base friction material

A paper-based friction material and nano-titanium technology, which is applied in paper, papermaking, textiles and papermaking, etc., can solve the problems of high surface energy, small nanoparticle size, and influence on nanopowder, and achieve the goal of improving friction and wear performance Effect

Active Publication Date: 2013-09-25
江苏沪祥医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nanoparticles have a small particle size, high surface energy, and a tendency to spontaneously agglomerate, and the existence of agglomeration will greatly affect the advantages of nano-powders. Therefore, how to improve the dispersion and stability of nano-powders in liquid media is very important. research topic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Step 1: Take 1.0g of phenolic resin and dissolve it in 200ml of absolute ethanol. After the phenolic resin is fully dissolved, let it stand for 20h-30h, seal it and store it to obtain A solution;

[0019] Step 2: Disperse 0.5g of multi-walled carbon nanotubes with a diameter of 30-100nm in 250ml of sodium dodecyl sulfate (SDS) aqueous solution with a mass concentration of 0.5%, and ultrasonically disperse for 40-60 minutes to obtain carbon nanotube suspension B ;

[0020] Step 3: Disperse nano-titanium in a mixture of ethanol and sodium oleate with a volume ratio of 3:1 to prepare 200 ml of nano-titanium suspoemulsion with a titanium concentration of 5%, and disperse it by ultrasonic wave for 20-40 minutes to obtain a slurry C;

[0021] Step 4: Take 12g of chopped carbon fibers with a diameter of 8-15um, 5g of bamboo fibers with a beating degree of 75°SR, and water capable of completely dispersing the above raw materials, and disperse them in water to obtain a mixed sus...

Embodiment 2

[0026] Step 1: Take 2.0g of phenolic resin and dissolve it in 200ml of absolute ethanol. After the phenolic resin is fully dissolved, let it stand for 20h-30h, seal it and store it to obtain A solution;

[0027] Step 2: Disperse 4.0 g of multi-walled carbon nanotubes with a diameter of 30-100 nm in 250 ml of an aqueous solution of sodium dodecyl sulfate (SDS) with a mass concentration of 2.0%, and ultrasonically disperse them for 40-60 minutes to obtain carbon nanotube suspension B ;

[0028] Step 3: Disperse nano-titanium in a mixture of ethanol and sodium oleate with a volume ratio of 4:1 to prepare 200 ml of nano-titanium suspoemulsion with a titanium concentration of 12%, and ultrasonically disperse for 20 to 40 minutes to obtain a slurry C;

[0029] Step 4: Take 16g of chopped carbon fibers with a diameter of 8-15um, 8g of bamboo fibers with a beating degree of 80°SR, and water capable of completely dispersing the above raw materials, and disperse them in water to obtain ...

Embodiment 3

[0034] Step 1: Take 3.0g of phenolic resin and dissolve it in 200ml of absolute ethanol. After the phenolic resin is fully dissolved, let it stand for 20h-30h, seal it and store it to obtain A solution;

[0035] Step 2: Disperse 8.0 g of multi-walled carbon nanotubes with a diameter of 30-100 nm in 250 ml of an aqueous solution of sodium dodecyl sulfate (SDS) with a mass concentration of 3.0%, and ultrasonically disperse them for 40-60 minutes to obtain carbon nanotube suspension B ;

[0036] Step 3: Disperse nano-titanium in a mixture of ethanol and sodium oleate with a volume ratio of 5:1 to prepare 200 ml of nano-titanium suspoemulsion with a titanium concentration of 20%, and ultrasonically disperse for 20-40 minutes to obtain a slurry C;

[0037] Step 4: Take 20g of chopped carbon fibers with a diameter of 8-15um, 12g of bamboo fibers with a beating degree of 90°SR, and water capable of completely dispersing the above raw materials, and disperse them in water to obtain a ...

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Abstract

A preparation method of a nano-titanium enhanced paper base friction material comprises the following steps: dissolving phenolic resin in absolute ethyl alcohol to obtain A; dispersing multiwalled carbon nanotube in a SDS aqueous solution to obtain B; dispersing nano-titanium in a mixed liquor of ethanol and sodium oleate to obtain C; dispersing short carbon fiber and bamboo fiber in water to obtain D; mixing C and D to obtain E, and pouring B into E to obtain F; pouring F into a fluffer for dispersion, making sheets by a sheet-making machine, and drying to obtain a sample wafer G; putting the sample wafer G into a vacuum filter, slowly injecting A at uniform speed to soak the sample wafer G in A, taking out the sample wafer G and drying, and carrying out hot briquetting by a vulcanizer so as to obtain the nano-titanium enhanced paper base friction material which has stable friction and wear properties. Through a dispersion-mixing technology, a nano-titanium suspended emulsion is added into a paper pulp mixture so as to enhance abrasive resistance of the paper base friction material through metallicity of titanium and raise friction coefficient of the paper base friction material.

Description

technical field [0001] The invention relates to a preparation method of reinforced paper-based friction material, in particular to a preparation method of nano-titanium reinforced paper-based friction material. Background technique [0002] Paper-based friction material is a key functional material used in wet clutches and brakes, and its performance directly affects the stability of transmission torque and driving safety. At the same time, the paper-based mocha material is a multi-component composite material, usually composed of more than ten kinds of materials. In terms of function, raw materials can be divided into four types: reinforcing body, bonding body, friction performance regulator and filler. They are usually produced by papermaking, so they are called "paper-based" friction materials [Ren Gang, Deng Haijin, Li bright. Automotive Technology, 2004(11): 1-4. ]. [0003] There are many factors that affect the performance of paper-based friction materials, among ...

Claims

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Application Information

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IPC IPC(8): D21H17/00
Inventor 曹丽云杨朝李文斌黄剑锋王文静费杰
Owner 江苏沪祥医疗器械有限公司
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