Whisker composite material for reinforcing automobile brake friction and a method for producing the same

A technology for composite friction materials and automobile brakes, applied in the field of materials, can solve the problems of unreported basic magnesium sulfate whiskers, etc., and achieve the effects of abundant raw materials, low wear rate, and simple synthesis process

Inactive Publication Date: 2009-08-26
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the research and application of basic magnesium sulfate whiskers in friction materials, especially automobile brake materials.

Method used

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  • Whisker composite material for reinforcing automobile brake friction and a method for producing the same
  • Whisker composite material for reinforcing automobile brake friction and a method for producing the same
  • Whisker composite material for reinforcing automobile brake friction and a method for producing the same

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1 (preferred embodiment)

[0027] Take the following composition ratio: 40 parts of basic magnesium sulfate whiskers, 8 parts of pyrophyllite powder, 20 parts of phenolic resin, 12 parts of copper powder, 5 parts of graphite powder, 12 parts of aluminum oxide, and 2 parts of zinc stearate. Prepare the friction material according to the following process steps:

[0028] (a) Raw material pretreatment. Place the basic magnesium sulfate whiskers in an oven and dry at 100°C for 1 hour, and place other raw materials in an oven and dry at 80°C for 1 hour.

[0029](b) Take the dried filler, metal powder, phenolic resin and other raw materials in step (a) and put them into a mixer equipped with blades and horizontal ribs, stir and mix at a high speed of not less than 1000rpm for 3 minutes, and then add alkaline The magnesium sulfate whiskers were stirred for 3 minutes. The mixed material after stirring is cashmere-like, and the filler and resin powder are evenly di...

Embodiment 2

[0032] Embodiment 2 (preferred embodiment)

[0033] Take the following composition ratio: 35 parts of basic magnesium sulfate whiskers, 8 parts of pyrophyllite powder, 20 parts of phenolic resin, 12 parts of copper powder, 5 parts of graphite powder, 12 parts of aluminum oxide, and 2 parts of zinc stearate. Prepare the friction material according to the following process steps:

[0034] (a) Raw material pretreatment. Place the basic magnesium sulfate whiskers in an oven and dry at 80°C for 2 hours, and place other raw materials in an oven and dry at 80°C for 1 hour.

[0035] (b) Take the dried filler, metal powder, phenolic resin and other raw materials in step (a) and put them into a mixer equipped with blades and horizontal ribs, stir and mix at a high speed of not less than 1000rpm for 3 minutes, and then add alkaline The magnesium sulfate whiskers were stirred for 3 minutes. The mixed material after stirring is cashmere-like, and the filler and resin powder are evenly d...

Embodiment 3

[0038] Embodiment 3 (preferred embodiment)

[0039] Take the following composition ratio: 30 parts of basic magnesium sulfate whiskers, 15 parts of pyrophyllite powder, 18 parts of phenolic resin, 12 parts of copper powder, 10 parts of graphite powder, 12 parts of aluminum oxide, and 2 parts of zinc stearate. Prepare the friction material according to the following process steps:

[0040] (a) Raw material pretreatment. Place the basic magnesium sulfate whiskers in an oven and dry at 90°C for 1.5 hours, and place other raw materials in an oven and dry at 80°C for 1 hour.

[0041] (b) Take the dried filler, metal powder, phenolic resin and other raw materials in step (a) and put them into a mixer equipped with blades and horizontal ribs, stir and mix at a high speed of not less than 1000rpm for 3 minutes, and then add alkaline The magnesium sulfate whiskers were stirred for 3 minutes. The mixed material after stirring is cashmere-like, and the filler and resin powder are even...

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Abstract

The invention provides a whisker composite material for reinforcing automobile brake friction and a method for producing the same, wherein the composite friction material consists of basic magneislum whisker, pyrophyllite power, phenol resin, copper powder, graphite powder, aluminium oxide and zine stearate, as raw materials; the producing method comprises raw material pretreatment, raw material mixing, hot press molding and cooling. The invention achieves the phenol resin reinforcement by the basic magneislum whisker [MgSO4.5MgO.8H2O] with excellent low cost, selects the pyrophyllite [Al4Si8O20OH4] as the filler for the assorted fiber brake friction material, the concerted coupling function of a substrate, the whister and the filler can be exerted according to the addition of a friction reinforcing agent, and an antiwear agent, thereby the novel automobile brake composite material has advantages of good heat resistance, moderate coefficient of friction, small wear rate, well heat fade resistance, good brake effect and low cost.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a novel whisker-reinforced composite friction material, and more specifically relates to a brake pad material used as an automobile friction brake device and a preparation method thereof. Background technique [0002] High-performance brake composite materials and products are widely used in aviation, automobiles, high-speed trains, motorcycles and other modern transportation fields. The rapid development of the automobile industry has become a pillar industry with the most potential and vitality in my country's economic development. According to the forecast of China Association of Automobile Manufacturers, by 2010, the national automobile production will be between 8 million and 10 million; by 2020, the domestic automobile demand and production will be between 14 million and 18 million; The largest car producing country. With the rapid increase in car ownership, both initial ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08K13/02C08K7/08C08K3/30C08K3/08C08K3/04C08K3/22C08K5/098C08K3/34C08J5/04C08J5/14F16D69/02B29C51/46
Inventor 高诚辉林有希何福善王媛叶绍炎
Owner FUZHOU UNIV
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