Automotive brake block made from modified thermoplastic phenolic resin material

A phenolic resin and thermoplastic technology, applied in the field of automotive brake pads, can solve problems such as insufficient heat resistance, brake pad wear, and high brittleness, and achieve the effects of high bonding probability, improved friction resistance, and excellent heat resistance

Inactive Publication Date: 2014-12-24
NINGGUO FEIYING AUTO SPARE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the application of friction materials, friction materials with asbestos fibers as reinforcement materials can meet the needs of friction materials because asbestos fibers have good heat resistance, high friction coefficient, large specific surface area, low price and abundant sources. With the rapid development, the requirements for the speed, load and safety of transportation vehicles and power machinery are getting higher and higher. When the asbestos friction material brakes, the instantaneous high temperature will cause the brake pads of the car to have severe thermal recession, resulting in abnormal wear of the brake pads. Asbestos material forms dust and floats in the air. Asbestos dust has carcinogenic effect. Some major automobile manufacturing countries have completely canceled asbestos-based friction materials in recent years. Phenolic resin has good heat resistance and mechanical properties, and has always been the most important friction material. matrix, but its brittleness, poor toughness, and insufficient heat resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A modified thermoplastic phenolic resin material vehicle brake pad, its raw materials include by weight: 17 parts of modified thermoplastic phenolic resin, 16.2 parts of nylon fiber, 9.8 parts of pitch-based carbon fiber, 7 parts of polypropylene fiber, 9.2 parts of lignin fiber , 4 parts of expanded vermiculite, 14 parts of barite, 13.8 parts of chromite powder, 9.5 parts of fluorite, 6.5 parts of flake graphite, 7 parts of nitrile rubber powder, 8 parts of tire powder, 5.8 parts of iron powder, silicon dioxide 11.2 copies;

[0013] Among them, the bulk density of expanded vermiculite is 125kg / m3, the water content is 6.3%, and the sintering temperature is 1120°C;

[0014] The preparation process of the modified thermoplastic phenolic resin: heat the thermoplastic phenolic resin to completely melt, add expanded vermiculite, stir for 2.5 hours, then add the curing agent hexamethylenetetramine and mix evenly, put it in an oven at 176°C for 7 hours, A modified thermoplas...

Embodiment 2

[0016] A modified thermoplastic phenolic resin material vehicle brake pad, its raw materials include by weight: 15 parts of modified thermoplastic phenolic resin, 20 parts of nylon fiber, 8 parts of pitch-based carbon fiber, 10 parts of polypropylene fiber, 8 parts of lignin fiber , 5 parts of expanded vermiculite, 10 parts of barite, 12 parts of chromite powder, 8 parts of fluorite, 5 parts of flake graphite, 8 parts of nitrile rubber powder, 8 parts of tire powder, 5 parts of iron powder, silicon dioxide 13 copies;

[0017] The preparation process of the modified thermoplastic phenolic resin: heat the thermoplastic phenolic resin to completely melt, add expanded vermiculite, stir for 2.5 hours, then add the curing agent hexamethylenetetramine and mix evenly, put it in an oven at 178°C for 6 hours, A modified thermoplastic phenolic resin is obtained.

Embodiment 3

[0019] A modified thermoplastic phenolic resin material vehicle brake pad, its raw materials include by weight: 20 parts of modified thermoplastic phenolic resin, 15 parts of nylon fiber, 10 parts of pitch-based carbon fiber, 5 parts of polypropylene fiber, 10 parts of lignin fiber , 3 parts of expanded vermiculite, 17 parts of barite, 15 parts of chromite powder, 10 parts of fluorite, 7 parts of flake graphite, 6 parts of nitrile rubber powder, 5 parts of tire powder, 6 parts of iron powder, silicon dioxide 10 copies;

[0020] Among them, the bulk density of expanded vermiculite is 120kg / m3, the water content is 7%, and the sintering temperature is 1120°C;

[0021] The preparation process of the modified thermoplastic phenolic resin: heat the thermoplastic phenolic resin to completely melt, add expanded vermiculite, stir for 3 hours, then add the curing agent hexamethylenetetramine and mix evenly, put it in an oven at 175°C for 8 hours, and obtain Modified thermoplastic phen...

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Abstract

The invention discloses an automotive brake block made from a modified thermoplastic phenolic resin material. The brake block comprises the following raw materials in parts by weight: 15-20 parts of modified thermoplastic phenolic resin, 15-20 parts of nylon fiber, 8-10 parts of pitch-based carbon fiber, 5-10 parts of polypropylene fiber, 8-10 parts of lignin fiber, 3-5 parts of expanded vermiculite, 10-17 parts of barite, 12-15 parts of chromium iron powder, 8-10 parts of fluorite, 5-7 parts of crystalline flake graphite, 6-8 parts of nitrile rubber powder, 5-8 parts of tyre powder, 5-6 parts of iron powder and 10-13 parts of silicon dioxide. The automotive brake block made from the modified thermoplastic phenolic resin material provided by the invention is good in toughening effect and thermal stability, excellent in heat-resistant quality, and better in friction stability and wearable performance.

Description

technical field [0001] The invention relates to the technical field of brake pads for vehicles, in particular to a brake pad for vehicles made of modified thermoplastic phenolic resin. Background technique [0002] In the application of friction materials, friction materials with asbestos fibers as reinforcement materials can meet the needs of friction materials because asbestos fibers have good heat resistance, high friction coefficient, large specific surface area, low price and abundant sources. With the rapid development, the requirements for the speed, load and safety of transportation vehicles and power machinery are getting higher and higher. When the asbestos friction material brakes, the instantaneous high temperature will cause the brake pads of the car to have severe thermal recession, resulting in abnormal wear of the brake pads. Asbestos material forms dust and floats in the air. Asbestos dust has carcinogenic effect. Some major automobile manufacturing countrie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C08L61/06C08L77/00C08L23/12C08L97/02C08L9/02C08L21/00C08K13/04C08K7/06C08K3/04C08K3/34C08K3/30C08K3/36C08K3/08C08J5/04
Inventor 孙奇春
Owner NINGGUO FEIYING AUTO SPARE PARTS
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