Elastic friction particle and preparation method thereof

A friction particle and elastic technology, applied in the field of elastic friction particles for wet paper-based friction plates and their preparation, can solve the problem that the ratio of dynamic and static friction coefficients and the technical performance of compression resilience cannot be achieved, complete process control parameters have not been formed, and material formula has not been established. Problems such as serialization are formed, and the dynamic/static friction coefficient ratio is close, the cost is low, and the manufacturing is simple.

Active Publication Date: 2013-12-18
杭州汉乐科新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the paper-based friction plates widely used in automobiles and construction machinery in my country have not yet been fully localized. There is still a big gap in the production process and material formula research compared with foreign countries. In the production process, a complete production process has not yet been formed. The process control parameters and special high-efficiency process equipment, the material formula has not yet formed a serialization, there is still a big gap
Especially in the dynamic / static friction system of wet paper-based friction materials, the technical performance of dynamic and static friction coefficient ratio and compression resilience cannot meet the requirements of similar foreign products

Method used

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  • Elastic friction particle and preparation method thereof

Examples

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Effect test

Embodiment 1

[0023] An elastic friction particle, comprising the following components and parts by weight: 6 parts of fluororubber; 28 parts of nitrile rubber; 10 parts of natural rubber; 0.5 part of accelerator DM; 1 part of anti-aging agent BEL-W; 0.5 part of stearic acid; PTFE suspension resin 0.5; sulfur 1.2 parts; nano-SiO 2 7 parts of modified phenolic resin; 1 part of aluminum boron carbide; 4 parts of vulcanization ladder; 20 parts of silicon carbide whiskers.

[0024] Preparation method: Weigh the raw materials → mix various raw materials and banbury for 12 minutes → put the mixed materials into the open mill for heat refining (the hot pressing temperature is 100°C, and the mixing time is 10 minutes) → form a film (the thickness of the film is 3 ~ 5mm) → crushing particles: put the kneaded and formed film into the pulverizer, and crush it into 80 mesh rubber elastic particles. Finally, elastic particle modification: soak the pulverized rubber elastic particles in the coordination...

Embodiment 2

[0030] A flexible rubber elastic friction particle for a wet paper-based friction sheet, comprising the following components and parts by weight: 8 parts of fluorine rubber; 32 parts of nitrile rubber; 12 parts of natural rubber; 1 part of accelerator DM; 1.2 parts of anti-aging agent BEL-W ; 0.6 parts of stearic acid; 1 part of polytetrafluoroethylene suspension resin; 1.5 parts of sulfur; nano-SiO 2 8 parts of modified phenolic resin; 1.2 parts of aluminum boron carbide; 6 parts of vulcanized ladder; 28 parts of silicon carbide whiskers.

[0031] Preparation method: Weigh the raw materials → mix various raw materials and banbury for 14 minutes → put the mixed materials into the open mill for heat refining (the hot pressing temperature is 105°C, and the mixing time is 8 minutes) → form a film (the thickness of the film is 3~5mm) → Grinding particles: put the kneaded film into the pulverizer, and pulverize it into 90 mesh elastic friction particles. Finally, the modification ...

Embodiment 3

[0036] An elastic friction particle, comprising the following components and parts by weight: 10 parts of fluorine rubber; 38 parts of nitrile rubber; 16 parts of natural rubber; 0.8 parts of accelerator DM; 1 part of anti-aging agent BEL-W; 0.8 parts of stearic acid; 1 part of polytetrafluoroethylene suspension resin; 1.5 parts of sulfur; nano-SiO 2 9 parts of modified phenolic resin; 1.5 parts of aluminum boron carbide; 8 parts of vulcanized ladder; 32 parts of silicon carbide whiskers.

[0037] Preparation method: Weigh the raw materials→mix various raw materials and banbury for 15 minutes→put the mixed materials into the open mill for heat refining (the hot pressing temperature is 115°C, and the mixing time is 7 minutes)→form the film (the thickness of the film is 3~5mm)→Grinding particles: put the kneaded and formed film into the pulverizer, and pulverize it into 100 mesh rubber elastic particles. Finally, rubber elastic particle modification: soak the pulverized rubber ...

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Abstract

The invention relates to an elastic friction particle and a preparation method thereof, and aims at providing an elastic friction particle which has the characteristics of good compression resilience, high temperature resistance, wear resistance, low noise, high and stable dynamic/static friction coefficient, close dynamic/static friction coefficient ratio and environmental friendliness. The provided method has the characteristics of simple and convenient preparation and relatively low cost. The technical scheme is as follows: an elastic friction particle for a wet paper-based friction sheet is a rubber elastic friction particle and comprises fluorine rubber, nitrile rubber, natural rubber, an accelerant DM, an anti-aging agent, stearic acid, polytetrafluoroethylene suspension resin, sulphur, nanometer SiO2 modified phenolic resin, boron carbide, antimony sulfide and a silicon carbide whisker. The preparation method comprises the following steps: (1) weighing all the raw materials according to the formula for later use; (2) feeding the raw materials into a rubber mixer for mixing, then feeding sulphur into the rubber mixer for mixing, and then taking a product out; (3) carrying out hot milling molding in an open mill; (4) crushing the particle; and (5) modifying the rubber elastic particle.

Description

technical field [0001] The invention relates to an elastic friction particle and a preparation method thereof, in particular to an elastic friction particle for a wet paper-based friction sheet and a preparation method thereof. Background technique [0002] The wet paper-based friction plate is composed of wet friction paper and steel chips. It is a key component in the automatic transmission device to achieve flexible torque transmission / braking and improve transmission performance. The quality of its performance directly determines the overall quality of the wet clutch. Wet paper-based friction plate is a kind of fiber-reinforced porous, compressible and hygroscopic important functional friction material. It has high dynamic / static friction coefficient, close dynamic and static friction coefficient, strong torsion transmission ability, soft and stable bonding process, and wear resistance. Good and the structure can be designed and so on. Paper-based friction material has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L7/00C08L27/12C08L61/06C08L27/18C08K13/04C08K7/10C08K5/09C08K3/06C08K3/38C08K3/30C08K3/34C08J7/00F16D69/02C09K3/14D21H17/67D21H17/33
Inventor 章春华盛剑峰方飞徐栋徐鸣
Owner 杭州汉乐科新材料科技有限公司
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