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Vehicle braking composite material reinforced by confusion of natural fiber and crystal whisker and preparing method thereof

A natural fiber and automobile braking technology, which is applied in the direction of mechanical equipment, friction linings, etc., can solve the problems that have not been reported in the application, and achieve the effect of abundant resources, good braking effect and reduced cost

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, cement composite materials, composite plates, reinforced plastics and textile industry have been applied, but there is no report on the application of high-performance engineering plastics, especially the enhancement and modification of brake friction materials.

Method used

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  • Vehicle braking composite material reinforced by confusion of natural fiber and crystal whisker and preparing method thereof
  • Vehicle braking composite material reinforced by confusion of natural fiber and crystal whisker and preparing method thereof
  • Vehicle braking composite material reinforced by confusion of natural fiber and crystal whisker and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 (preferred embodiment)

[0025] Take the following composition ratio: 7 parts of bamboo fiber, 25 parts of basic magnesium sulfate whiskers, 5 parts of steel fiber, 11 parts of aluminum oxide, 6 parts of graphite, 22 parts of phenolic resin, 10 parts of pyrophyllite powder, 8 parts of iron oxide, 10 parts of copper powder, 15 parts of barium sulfate, 1 part of zinc stearate. Prepare the friction material according to the following process steps:

[0026] a) Pretreatment of raw materials: place bamboo fiber and other raw materials in an oven and dry at 120°C for 1 hour, and dry the resin at 60°C for 0.5 hour;

[0027] b) Get the dried phenolic resin, steel fiber, basic magnesium sulfate whisker and other raw materials except bamboo fiber in step a), stir for 4 minutes, then add bamboo fiber, and discharge after stirring for 3 minutes. The appearance of the stirred mixture is cashmere-like, various fibers are interlaced, and fillers and resin powder are dis...

Embodiment 2

[0030] Embodiment 2 (preferred embodiment)

[0031]Take the following composition ratio: 4 parts of bamboo fiber, 25 parts of basic magnesium sulfate whiskers, 5 parts of steel fiber, 8 parts of aluminum oxide, 12 parts of graphite, 22 parts of phenolic resin, 10 parts of pyrophyllite powder, 3 parts of iron oxide, 10 parts of copper powder, 10 parts of barium sulfate, 2 parts of zinc stearate. Prepare the friction material according to the following process steps:

[0032] a) Pretreatment of raw materials: place bamboo fiber in an oven and dry at 110°C for 1.5 hours, phenolic resin at 60°C for 0.5 hour, and place other raw materials in an oven and dry at 120°C for 1 hour;

[0033] b) Get the dried phenolic resin, steel fiber, basic magnesium sulfate whisker and other raw materials except bamboo fiber in step a), stir for 4 minutes, then add bamboo fiber, and discharge after stirring for 3 minutes. The appearance of the stirred mixture is cashmere-like, various fibers are in...

Embodiment 3

[0036] Embodiment 3 (preferred embodiment)

[0037] Take the following composition ratio: 6 parts of bamboo fiber, 25 parts of basic magnesium sulfate whiskers, 5 parts of steel fiber, 11 parts of aluminum oxide, 10 parts of graphite, 20 parts of phenolic resin, 10 parts of pyrophyllite powder, 4 parts of iron oxide, 10 parts of copper powder, 12 parts of barium sulfate, 1 part of zinc stearate. Prepare the friction material according to the following process steps:

[0038] a) Raw material pretreatment: place bamboo fiber in an oven and dry at 100°C for 1.5 hours, phenolic resin at 60°C for 0.5 hour, and place other raw materials in an oven and dry at 120°C for 1 hour;

[0039] b) Get the dried resin, steel fiber, basic magnesium sulfate whisker and other raw materials except bamboo fiber in step a), stir for 4 minutes, then add bamboo fiber, and discharge after stirring for 3 minutes. The appearance of the stirred mixture is cashmere-like, various fibers are interlaced, an...

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Abstract

The present invention provides a vehicle braking composite material reinforced by confusion of natural fiber and crystal whisker and preparing method thereof. The raw materials of composite friction material is composed of bamboo fiber, phenolic resin, magnesium sulfate crystal whisker, steel fiber, copper powder, graphite dust, pyrophyllite powder, aluminum oxide, iron oxide, barium sulfate and zinc stearate. The preparing method comprises the following steps: preprocessing the raw materials, mixing the raw materials, hot pressing shaping and heat processing. The invention uses the bamboo fiber with low cost for reinforcing the phenolic resin. The proper amount of wear-increasing agent, anti-wear agent and filling agent for exerting the cooperative coupling function among the substrate, the fiber / crystal whisker and filling agent, thereby obtaining the novel vehicle braking composite material which has the advantages of stable friction coefficient under different temperatures, low wear rate, high heat fading resistance, excellent braking effect, shock absorbing, noise reduction and low cost.

Description

technical field [0001] The invention relates to a resin-based friction material mixed with natural fibers and inorganic salt whiskers, in particular to the mixed friction material used in automobile friction braking devices and friction transmission devices and its preparation. Background technique [0002] The rapid development of the automobile industry and the further improvement of the requirements for safety, comfort and environmental performance have put forward new urgent requirements for the research and development of high-performance braking materials. On the one hand, the brake friction material requires high and stable braking force, that is, it is required to maintain a stable friction coefficient in a wide temperature range (-40 ~ 600 ℃) and under the condition of speed, pressure and environment changes; on the other hand, it must be It has good wear resistance to ensure proper service life and braking stability; it should also have good thermal conductivity, s...

Claims

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Application Information

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