Preparation method of zirconium boride modified paper base friction material

A paper-based friction material, zirconium boride technology, applied in the direction of synthetic cellulose/non-cellulose material pulp/paper, paper, papermaking, etc., can solve the problem of low strength and toughness, high melting point of materials, introduction of zirconium boride, etc. problem, to achieve good oxidation resistance, improve friction performance, and good corrosion resistance

Active Publication Date: 2013-09-25
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

However, so far, no one has introduced zirconium boride into friction materials (especially paper-based friction materials)
At the same time, ZrB 2 The material has a high melting point, is difficult to sinter, and its own strength and toughness are relatively low, which limits its application in harsh operating environments

Method used

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  • Preparation method of zirconium boride modified paper base friction material
  • Preparation method of zirconium boride modified paper base friction material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step 1: Take 1.2g cashew nut shell modified phenolic resin, dissolve it in 150ml of absolute ethanol to obtain a phenolic resin solution, wait for the phenolic resin to fully dissolve and let it stand for 20-30h, seal it and save it to obtain A solution;

[0021] Step 2: Disperse 0.5g of multi-walled carbon nanotubes with a diameter of 30-50nm in 200ml of an aqueous solution of sodium dodecylsulfonate (SDS) with a mass concentration of 0.25%, stir magnetically for 5-7 hours, and disperse evenly to obtain carbon nanotubes tube suspension B;

[0022] Step 3: Dissolve zirconium boride in deionized water to prepare 50ml of zirconium boride suspension with a concentration of 0.12mol / L, stir magnetically for 10-30min, and then add 1ml of polyammonium methacrylate (PMAA) to the suspension ), magnetically stirred for 1 to 4 hours to obtain zirconium boride solution C;

[0023] Step 4: Take 10g of chopped carbon fiber with a diameter of 8-15 μm, 8g of bamboo fiber with a beatin...

Embodiment 2

[0027] Step 1: Take 1.3g cashew nut shell modified phenolic resin, dissolve it in 145ml of absolute ethanol to obtain a phenolic resin solution, wait for the phenolic resin to be fully dissolved and let it stand for 20h-30h, seal it and save it to obtain A solution;

[0028] Step 2: Disperse 1g of multi-walled carbon nanotubes with a diameter of 30-50nm in 250ml of sodium dodecylsulfonate (SDS) aqueous solution with a mass concentration of 0.2%, and magnetically stir for 5-7 hours to configure uniform dispersion to obtain carbon nanotubes Suspension B;

[0029] Step 3: Dissolve zirconium boride in deionized water to prepare 150ml of zirconium boride suspension with a concentration of 0.13mol / L, stir magnetically for 10-30min, and then add 3.5ml of polyammonium methacrylate ( PMAA), magnetically stirred for 1 to 4 hours to obtain zirconium boride solution C;

[0030] Step 4: Take 8g of chopped carbon fiber with a diameter of 8-15 μm, 7g of bamboo fiber with a beating degree of...

Embodiment 3

[0034]Step 1: Take 1.4g cashew nut shell modified phenolic resin, dissolve it in 140ml of absolute ethanol to obtain a phenolic resin solution, wait for the phenolic resin to be fully dissolved and let it stand for 20h-30h, seal it and store it to obtain A solution;

[0035] Step 2: Disperse 1.5g of multi-walled carbon nanotubes with a diameter of 30-50nm in 300ml of an aqueous solution of sodium dodecylsulfonate (SDS) with a mass concentration of 0.15%, stir magnetically for 5-7 hours and configure to uniformly disperse carbon nanotubes tube suspension B;

[0036] Step 3: Dissolve zirconium boride in deionized water to prepare 200ml of zirconium boride suspension with a concentration of 0.14mol / L, stir magnetically for 10-30min, and then add 4.5ml of polyammonium methacrylate ( PMAA), magnetically stirred for 1 to 4 hours to obtain zirconium boride solution C;

[0037] Step 4: Take 9g of chopped carbon fiber with a diameter of 8-15 μm, 6g of bamboo fiber with a beating degre...

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Abstract

A preparation method of a zirconium boride modified paper base friction material comprises the following steps: dissolving cashew hull modified phenolic resin in absolute ethyl alcohol to obtain a solution A; dispersing multiwalled carbon nanotube in a sodium dodecanesulphonate aqueous solution to obtain a fluid suspension B; dispersing zirconium boride in PMAA to obtain a zirconium diboride dissolving pulp C with good dispersion stability; dispersing short carbon fiber, bamboo fiber and diatomite in water and adding the fluid suspension B and the dissolving pulp to obtain a solution D; pouring the solution D into a fluffer for dispersion, making sheets by a sheet-making machine and drying to obtain a sample wafer E; and uniformly smearing the solution A on the sample wafer E and naturally airing, and carrying out hot briquetting by a vulcanizer so as to obtain the zirconium boride modified paper base friction material with stable friction performance. According to the invention, zirconium boride is used as a raw material to be added in a carbon fiber reinforced resin matrix wet-type friction material, and a single-layer paper base friction material is prepared to endow zirconium boride (ZrB2) with good electroconductibility and thermal conductivity, corrosion resistance, resistance to heat shocks, oxidation resistance at high temperature and wear resistance.

Description

technical field [0001] The invention relates to a preparation method of a modified paper-based friction material, in particular to a preparation method of a zirconium boride modified paper-based friction material. 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 materials and carbon / carbon composite materials, etc. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/69D21H13/50D21H17/48D21H17/00
Inventor 曹丽云李文斌黄剑锋王文静费杰杨朝
Owner 盐城大数据资产经营管理有限公司
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