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Novel non-rubber winding clutch facing

A clutch face and rubber technology, applied in clutches, friction clutches, mechanically driven clutches, etc., can solve the problems of small thermal expansion safety factor, low friction coefficient, and large thermal decay, and achieve small thermal decay, high friction coefficient, and durability. good heat effect

Inactive Publication Date: 2010-08-04
浙江科马摩擦材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the adoption of the technical solution of the present invention, the present invention overcomes the problems of poor heat resistance, poor wear resistance, large thermal decay and low friction coefficient of the previous clutch face. It is used in the production of clutch faces for motor vehicles. Because the water-soluble phenolic resin binder has the advantages of small thermal decay, small thermal expansion and high safety factor, the clutch face made has good heat resistance, which can be as high as 350 °C or higher. ;The friction coefficient is high and stable; the thermal decay is small, the wear resistance is good, etc.; at the same time, it also has the characteristics of stable clutch, especially small thermal expansion; and eliminates the hidden danger of flammability and explosion, ensuring production safety

Method used

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  • Novel non-rubber winding clutch facing
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  • Novel non-rubber winding clutch facing

Examples

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Effect test

Embodiment 1

[0007] Embodiment 1, with reference to accompanying drawing.

[0008] The invention provides a new type of rubber-free winding clutch face, which mainly uses water-soluble phenolic resin as the bonding material, that is, water-soluble phenolic resin is used as a new rubber substitute material to replace the known "rubber and gasoline" glue binder.

[0009] First produce novel water-soluble phenolic resin according to the following process:

[0010] (1) 100 parts by weight of phenol and 105-115 parts by weight of formaldehyde are accurately weighed and put into a reaction vessel, and under the action of 0.1-0.2 parts by weight of a basic catalyst, heating and stirring are started.

[0011] (2) Stop heating when the material heating temperature reaches 85° C., continue stirring, and stop stirring when the material temperature reaches 95° C.

[0012] (3) When the temperature reaches 98°C, the material starts to boil and undergo a violent reaction. At this time, start timing unt...

Embodiment 2

[0025] Embodiment 2, with reference to accompanying drawing.

[0026] According to the GB5764-1998 standard, the friction coefficient is tested on a constant speed friction testing machine. Two samples of 25×25mm were prepared, and the coefficient of friction was measured under a positive pressure of 0.49Mpa. The test samples passed the test temperature ranges of 100°C, 150°C, 200°C, 250°C, 300°C, and 350°C to test the friction coefficient and wear rate.

[0027] One point to be explained here is that the national GB5764-1998 standard stipulates that the maximum test temperature requirement for clutch face friction coefficient and wear rate is 200°C. In order to improve product quality requirements, we increase the quality standard requirement to 350°C.

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Abstract

The invention provides a novel non-rubber winding clutch facing, which adopts a water soluble phenolic resin as a binding material. The water soluble phenolic resin is prepared by using 100 parts by weight of phenol and 105 to 115 parts by weight of formaldehyde as the raw materials through the condensation reaction under the action of 0.1 to 0.2 part by weight of basic catalyst. The content of solid product obtained after the water soluble phenolic resin is dried accounts for 50 to 55 percent of the weight of the original phenolic resin. The invention uses the water soluble phenolic resin as the novel binder to produce the vehicle clutch facing. The water soluble phenolic resin binder has the advantages of small heat fading, small thermal expansion, higher safety factor and the like, thus, the prepared clutch facing has the advantages of good heat resistance which can reach over 350 DEG C, higher and stable friction coefficient, small heat fading, good wearing resistance and the like, also has the characteristics of stable clutch, particularly smaller thermal expansion and the like, eliminates the flammable and combustible hidden troubles and guarantees the production safety.

Description

technical field [0001] The present invention relates to a novel rubber-free winding clutch facing, in particular to a clutch facing used in a motor vehicle transmission system. Background technique [0002] At present, the known clutch faces for motor vehicles all use synthetic rubber, natural rubber, etc. Materials such as fillers and various rubber compounding agents are composed of fillers and the like. The usual production process method is to refine the rubber into a film, then use gasoline or solvent oil as a solvent to make a rubber glue, then impregnate the thread or cloth, and then pass a series of winding and hot pressing molding after drying. process, and finally made into a clutch face for motor vehicles. However, due to the heat resistance of the rubber binder used in the clutch face in the past, it can no longer fully meet the performance requirements of the clutch face used by modern motor vehicles. 0.25. But in the past, the clutch friction plate with rub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/10C08K13/04C08K7/14C08K3/04C08K3/26C08K5/098F16D13/64F16D69/02
Inventor 王宗和司万宝程慧玲徐发健
Owner 浙江科马摩擦材料股份有限公司
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