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Wet friction material

A friction part, wet technology, applied in the direction of friction lining, other chemical processes, thin material processing, etc., can solve the problem of increased load of wet friction parts, and achieve the effect of excellent durability and high static friction coefficient

Inactive Publication Date: 2014-09-03
AICA SDK PHENOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to cope with the increase in the fuel consumption rate of the vehicle, the increase in the engine output of the vehicle, and the increase in the weight of the vehicle, the load on the wet friction material has increased, so the friction coefficient and durability of the wet friction material need to be further improved.

Method used

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Examples

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Effect test

Embodiment

[0028] Hereinafter, the present invention will be described in further detail using examples.

Synthetic example 1

[0030] In a 1L three-necked separate flask equipped with a stirrer, a condenser, and a thermometer, put 100 parts by mass of tung oil, 10 parts by mass of anhydrous maleic acid, and 0.1 parts by mass of triethylamine at a temperature of 165° C. After reacting for 1 hour and cooling to 40° C. or lower, 5.5 parts by mass of dimethylethanolamine was added and mixed to obtain maleated tung oil A having a maleation rate of 30 mol %. Here, the maleation rate of maleated tung oil is calculated by taking triglyceride of lynic acid as the main component of tung oil and taking the total number of double bonds contained therein as 100 mol%.

Synthetic example 2

[0032] In a 1L three-necked separate flask equipped with a stirrer, a condenser, and a thermometer, put 100 parts by mass of tung oil, 3.4 parts by mass of anhydrous maleic acid, and 0.1 parts by mass of triethylamine at a temperature of 165° C. After reacting for 1 hour and cooling to 40° C. or lower, 2.0 parts by mass of dimethylethanolamine was added and mixed to obtain maleated tung oil B having a maleation rate of 10 mol %.

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Abstract

The wet friction member of the present invention is obtained by infiltrating a bonding resin composition containing a resole phenolic resin and maleated drying oil into a friction base material, and hardening it. Maleated drying oil is obtained by reacting drying oils such as tung oil and linseed oil with anhydrous maleic acid, preferably, the content is 50 parts by mass to 100 parts by mass of resole phenolic resin. 250 parts by mass. The wet friction member of the present invention has both a high coefficient of static friction and excellent durability.

Description

technical field [0001] The present invention relates to a wet friction member useful in wet clutches in automatic transmissions for vehicles, synchronizer lock rings in manual transmissions, wet multi-plate clutch friction plates for motorcycles, wet brakes and the like. Background technique [0002] Currently, a paper friction material based on paper is mainly used as a wet friction material. Paper friction materials are produced by mixing various friction modifiers and the like in paper pulp, making paper, impregnating it with bonding resin represented by phenolic resin, and hardening it. Since the paper friction material has an appropriate coefficient of friction, it is widely used. However, in order to cope with the increase in the fuel consumption rate of the vehicle, the increase in the engine output of the vehicle, and the increase in the weight of the vehicle, the load on the wet friction material has increased, so the friction coefficient and durability of the wet ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/14F16D69/02
CPCY10T428/31851Y10T428/31993C09K3/14F16D2200/0091Y10T428/31964F16D69/026Y10T428/25Y10T428/253Y10T428/2982
Inventor 浅川显太小野能理善
Owner AICA SDK PHENOL