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Automotiv non-asbestos high strength braking friction disk, and its prodn. method

A non-asbestos, high-strength technology, applied in the field of brake friction materials, can solve the problems of lack of high temperature resistance, lack of promotion and application, high cost, low thermal weight loss, reduced test times, and good thermal decomposition temperature.

Inactive Publication Date: 2005-01-12
APPLIED PHYSICS INST OF GUANGXI ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The non-asbestos brake friction materials reported in the above-mentioned open documents also have some deficiencies, such as some with higher cost, some also lacking in high temperature resistance, and many of them have not been promoted and applied at present.

Method used

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  • Automotiv non-asbestos high strength braking friction disk, and its prodn. method
  • Automotiv non-asbestos high strength braking friction disk, and its prodn. method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] First carry out the production of double-modified phenolic resin, pulverize the phenolic resin into granules, then add 2% styrene-butadiene rubber by weight for hot rolling, add 3% hexamethylenetetramine at the same time, then continue hot rolling, and then Add 10% dimer amine terephthaloyl diacetate, and when the surface of the resin becomes discolored after mixing, roll it down immediately and cool it down rapidly to make a double-modified phenolic resin. Accurately weigh various raw materials according to the following weight proportions: 20 kg of double-modified phenolic resin, 20 kg of steel fiber, 5 kg of polyester fiber, 10 kg of sepiolite fiber, 10 kg of barium sulfate, 10 kg of graphite, and 1 kg of aluminum oxide. kg, a total of 24 kg of mixed rubber powder, pottery clay, and walnut shell powder are added to the plow-type high-speed mixer in turn, and the mixture is mixed for 5 minutes until the mixture is uniform. 400-ton single-layer hot press machine, heate...

Embodiment 2

[0083]First of all, double-modified phenolic resin is made, the phenolic resin is crushed into granules, and then 5% styrene-butadiene rubber is added for hot rolling, and 2% hexamethylenetetramine is added as a curing agent, and then the hot rolling is continued. Then add 15% dimer amine terephthaloyl diacetate, and when the surface of the resin becomes discolored after mixing, roll it down immediately and cool it down rapidly to make a double-modified phenolic resin. Accurately weigh various raw materials according to the following weight ratio: 10 kg of double-modified phenolic resin, 20 kg of copper fiber, 10 kg of aramid fiber, 15 kg of glass fiber, 10 kg of barium sulfate, 10 kg of graphite, 2 kg of aluminum oxide, A total of 23 kg of mixed rubber powder, pottery clay, and cashew nut shell powder are added to the plow-type high-speed mixer in turn, and the mixture is mixed for 8 minutes until the mixture is evenly mixed. A one-step molding method, that is, a hot-pressing ...

Embodiment 3

[0085] First of all, double-modified phenolic resin is made, the phenolic resin is crushed into granules, and then 8% by weight of styrene-butadiene rubber is added for hot rolling, and 4% curing agent (hexamethylenetetramine) is added at the same time, followed by continuous hot rolling , plus 18% terephthaloyl diacetic acid dimixed amine, after mixing the resin and cooling, you can make a double-modified phenolic resin. Accurately weigh various raw materials according to the following weight proportions, double modified phenolic resin 15 kg, copper fiber 5 kg, steel fiber 13 kg, cotton fiber 10 kg, barite fiber 15 kg, barium sulfate 10 kg, graphite 10 kg kg, 2 kg of alumina, 20 kg of mixed rubber powder, pottery clay, and coconut shell powder, which are added to the plow-type high-speed mixer in turn, and mixed for 8 minutes until the mixture is uniform, and the one-step molding method is implemented, that is, hot pressing For the chemical process, a 400-ton single-layer hot...

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Abstract

The wearing piece of non-asbestos high srength material applies the high molecular compound, phenolic ressin as the agglomerant. The metal fiber or organic fiber is strengthen component. The stuffing applies regulator with frictional properties and barium sulfate, black lead, alumina as accessory ingredient. The production possesses excellent characteristic of physical chemical and mechanical and thermo-stability.

Description

technical field [0001] The invention relates to a brake friction material, in particular to an automobile non-asbestos high-strength brake friction lining and a production method thereof. Background technique [0002] With the rapid development of the automobile industry, automobile users have higher and higher requirements for brake safety performance. At present, the common automobile brake pads on the market are mostly asbestos products, with simple process, low cost, poor braking performance and heat resistance. The strength is weak, and asbestos is worn into particles and suspended in the air. If it is inhaled by the human body, it is easy to cause serious diseases of the lungs and trachea. Especially when the traditional asbestos brake pads are used at high temperatures, the friction coefficient will be greatly reduced. In the case of continuous braking, the surface temperature of the brake pads can reach above 500°C, and the asbestos material loses crystal water, resu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/14C08K7/04C08L61/04F16D69/02
Inventor 于清武
Owner APPLIED PHYSICS INST OF GUANGXI ACADEMY OF SCI
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