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Soft metal-friendly resin-based friction material and preparation method thereof

A kind of friction material and friendly technology, which is applied in the field of soft metal-friendly resin-based friction material and its preparation, can solve the problems of environmental protection, energy saving and large energy consumption without resin-based friction materials

Pending Publication Date: 2021-09-07
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the powder metallurgy method consumes a lot of energy, and there is no resin-based friction material for environmental protection and energy saving

Method used

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  • Soft metal-friendly resin-based friction material and preparation method thereof
  • Soft metal-friendly resin-based friction material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1: Measure 500ml of deionized water, use Tris and concentrated hydrochloric acid to adjust the pH of the solution to 8.5, add 1g of dopamine hydrochloride and 10g of hexagonal boron nitride successively, and stir at room temperature for 24 hours. Afterwards, the hexagonal boron nitride is filtered and washed, and dried in a vacuum oven at 60-80° C. to obtain surface-modified boron nitride powder.

[0035] Step 2: Weigh 24.00 g of reinforcing fiber, 12.00 g of phenolic resin, 8.00 g of nitrile rubber, and 56.00 g of filler and friction modifier. Wherein, the filler includes 1.00 g of modified boron nitride and 7.00 g of calcium carbonate. The above raw materials are mixed at a high speed to obtain a flocculent mixture.

[0036] Step 3: Weigh 15.47g of the flocculent mixture, fill it evenly into a steel mold, and press it at a pressure of 5MPa and a temperature of 160°C for 600s to obtain a thickness of about 3mm and a density of 2g / cm 3 ring prefab.

[0037] Step...

Embodiment 2

[0039] Step 1: Measure 500ml of deionized water, use Tris and concentrated hydrochloric acid to adjust the pH of the solution to 8.5, add 1g of dopamine hydrochloride and 10g of hexagonal boron nitride successively, and stir at room temperature for 24 hours. Afterwards, the hexagonal boron nitride is filtered and washed, and dried in a vacuum oven at 60-80° C. to obtain surface-modified boron nitride powder.

[0040] Step 2: Weigh 24.00 g of reinforcing fiber, 12.00 g of phenolic resin, 8.00 g of nitrile rubber, and 56.00 g of filler and friction modifier. Wherein, the filler includes 3.00 g of modified boron nitride and 5.00 g of calcium carbonate. The above raw materials are mixed at a high speed to obtain a flocculent mixture.

[0041] Step 3: Weigh 15.47g of the flocculent mixture, fill it evenly into a steel mold, and press the mold at a pressure of 5MPa and a temperature of 160°C for 600s to obtain a thickness of about 3mm and a density of 2g / cm 3 ring prefab.

[0042...

Embodiment 3

[0044] Step 1: Measure 500ml of deionized water, use Tris and concentrated hydrochloric acid to adjust the pH of the solution to 8.5, add 1g of dopamine hydrochloride and 10g of hexagonal boron nitride successively, and stir at room temperature for 24 hours. Afterwards, the hexagonal boron nitride is filtered and washed, and dried in a vacuum oven at 60-80° C. to obtain surface-modified boron nitride powder.

[0045] Step 2: Weigh 24.00 g of reinforcing fiber, 12.00 g of phenolic resin, 8.00 g of nitrile rubber, and 56.00 g of filler and friction modifier. Wherein, the filler includes 5.00 g of modified boron nitride and 3.00 g of calcium carbonate. The above raw materials are mixed at a high speed to obtain a flocculent mixture.

[0046] Step 3: Weigh 15.47g of the flocculent mixture, fill it evenly into a steel mold, and press the mold at a pressure of 5MPa and a temperature of 160°C for 600s to obtain a thickness of about 3mm and a density of 2g / cm 3 ring prefab.

[0047...

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Abstract

The invention relates to a soft metal-friendly resin-based friction material and a preparation method thereof, dopamine hydrochloride and hexagonal boron nitride are added into a buffer solution with PH of 8.5 for mixing, and modified boron nitride with the surface uniformly coated with a polydopamine nano-film is obtained. And by uniformly mixing the modified boron nitride serving as a filler with fibers and a resin binding agent, and carrying out hot-pressing curing, the soft metal-friendly resin-based friction material is obtained. The resin-based friction material has the beneficial effects that the anti-attrition lubricating property, the heat-conducting property and the anti-shearing property of the resin-based friction material are improved. The wear rate of the resin-based friction material is reduced by 76%, the wear rate of the soft metal dual disc is reduced by 55.6%, and the surface temperature of the dual disc in the friction process is obviously reduced.

Description

technical field [0001] The invention belongs to a dry resin-based friction material and a preparation method thereof, and relates to a soft metal-friendly resin-based friction material and a preparation method thereof. Background technique [0002] In some specific engineering environments, due to economical needs or high requirements for materials such as thermal conductivity and corrosion resistance, low-hardness metals are often used as dual discs, such as aluminum duals in motorcycle clutches, and offshore dredgers Copper couples in high-power heat-collecting friction devices such as , deep-sea drilling rig platforms, etc. However, these metals are soft in nature and are prone to adhesion and abrasive wear during friction. During the continuous braking process, the low-hardness dual disc is more prone to scratches due to the action of asperities and wear debris on the surface of the friction material. In addition, soft metals also have defects such as poor heat resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08L9/02C08L97/02C08L77/10C08K9/10C08K3/38C08K3/26C08K7/14C08K7/06C08K7/04C08J5/04
CPCC08J5/045C08J5/043C08J5/042C08J5/046C08J2361/06C08J2409/02C08J2497/02C08J2477/10C08K2201/011C08K9/10C08K2003/385C08K2003/265C08K7/14C08K7/06C08K7/04
Inventor 李贺军朱雨费杰傅业伟齐乐华付前刚
Owner NORTHWESTERN POLYTECHNICAL UNIV
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