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High-temperature resistant friction material and preparation method thereof

A technology of friction materials and high temperature resistance, which is applied in the direction of friction linings, chemical instruments and methods, mechanical equipment, etc., which can solve the problems of friction surface tissue damage, small braking torque, and falling block surface, etc., to achieve improved anti-fading performance, The effect of improving the wear condition and scientific proportioning

Inactive Publication Date: 2018-02-27
WUHAN YOUFIN FRICTION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increased vehicle speed, increased load and increased weight of new energy vehicles have brought unfavorable factors to the braking system, especially for heavy trucks, large buses and new energy buses, which are prone to high braking temperatures (500 °C) during braking. -650℃), when the existing friction material brakes at high temperature, the braking torque will be small, the grinding rate will be too high, and the friction surface structure will be destroyed, resulting in defects such as falling blocks or surface looseness.

Method used

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  • High-temperature resistant friction material and preparation method thereof
  • High-temperature resistant friction material and preparation method thereof
  • High-temperature resistant friction material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A method for preparing a high temperature resistant friction material, comprising the following steps:

[0025] Step 1, mixing thermally conductive mineral fibers with a mass ratio of 4:3:1, an inorganic high-temperature adhesive, and porous mineral powder; wherein, the specific preparation process of the porous mineral powder is as follows:

[0026] Crush the mineral particles, put the mineral powder into the silica sol according to the ratio of 1g / 50ml, and keep stirring during the adding process. In the muffle furnace, the temperature was raised to 300°C at 10°C / min, kept for 30 minutes, then raised to 500°C at 5°C / min, kept for 20 minutes to obtain a gel solid, and then pulverized to obtain the porous mineral powder.

[0027] Step 2. Clean, degrease and polish the surface of the steel back, and spray adhesive on the surface of the steel back for later use;

[0028] Step 3, putting the steel back and the mixture obtained in step 1 into a pressing mold for pressing; ...

Embodiment 2

[0033] A method for preparing a high temperature resistant friction material, comprising the following steps:

[0034] Step 1, mixing thermally conductive mineral fibers with a mass ratio of 4:4:2, an inorganic high-temperature adhesive, and porous mineral powder; wherein, the specific preparation process of the porous mineral powder is as follows:

[0035] Crush the mineral particles, put the mineral powder into the silica sol according to the ratio of 1g / 50ml, and keep stirring during the adding process. In the muffle furnace, the temperature was raised to 300°C at 10°C / min, kept for 30 minutes, then raised to 500°C at 5°C / min, kept for 20 minutes to obtain a gel solid, and then pulverized to obtain the porous mineral powder.

[0036] Step 2. Clean, degrease and polish the surface of the steel back, and spray adhesive on the surface of the steel back for later use;

[0037] Step 3, putting the steel back and the mixture obtained in step 1 into a pressing mold for pressing; ...

Embodiment 3

[0042] A method for preparing a high temperature resistant friction material, comprising the following steps:

[0043] Step 1, mixing thermally conductive mineral fibers with a mass ratio of 4:6:4, inorganic high-temperature adhesives, and porous mineral powders; wherein, the specific preparation process of the porous mineral powders is as follows:

[0044] Crush the mineral particles, put the mineral powder into the silica sol according to the ratio of 1g / 50ml, and keep stirring during the adding process. In the muffle furnace, the temperature was raised to 300°C at 10°C / min, kept for 30 minutes, then raised to 500°C at 5°C / min, kept for 20 minutes to obtain a gel solid, and then pulverized to obtain the porous mineral powder.

[0045] Step 2. Clean, degrease and polish the surface of the steel back, and spray adhesive on the surface of the steel back for later use;

[0046] Step 3, putting the steel back and the mixture obtained in step 1 into a pressing mold for pressing; ...

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Abstract

The invention discloses a high-temperature resistant friction material. The high-temperature resistant friction material comprises heat-conduction mineral fibers, inorganic high-temperature adhesivesand porous mineral powder. A preparation method of the high-temperature resistant friction material comprises the following steps of (1) taking and mixing the heat-conduction mineral fibers, the inorganic high-temperature adhesives and the porous mineral powder according to the mass ratio; (2) cleaning, degreasing and polishing the surface of a steel backing and spraying the adhesives to the surface of the steel backing for standby application; (3) conducting pressing; (4) conducting heat treatment; (5) conducing grinding treatment; and (6) spraying plastic paint to the surface of the steel backing. The high-temperature resistant friction material is scientific in proportion, easy to manufacture and low in cost, has remarkable physical performance and stable friction coefficient. Meanwhile, the high-temperature resistant friction material is stable in friction coefficient, small in degeneration, good in recovery performance, moderate in hardness, comfortable and reliable in braking andcapable of lowering braking noise.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a high-temperature-resistant friction material and a preparation method thereof. Background technique [0002] With the rapid development of the domestic automobile industry, vehicles are constantly advancing in the direction of high speed, high load and energy environmental protection. The driving safety performance of vehicles has also aroused people's great attention. Increased vehicle speed, increased load and increased weight of new energy vehicles have brought unfavorable factors to the braking system, especially for heavy trucks, large buses and new energy buses, which are prone to high braking temperatures (500 °C) during braking. -650°C), when the existing friction material brakes at high temperature, it will produce defects such as small braking torque, high grinding rate, and damage to the friction surface structure, resulting in block loss or surface lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
CPCF16D69/02F16D2200/0065F16D2200/0069F16D2250/0023
Inventor 王瑾沈家骕
Owner WUHAN YOUFIN FRICTION MATERIAL
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