Unlock instant, AI-driven research and patent intelligence for your innovation.

Ceramic fiber reinforced ceramic matrix automotive brake friction material and preparation method thereof

A technology of automobile braking and ceramic fiber, which is applied to friction linings, mechanical equipment, etc., can solve the problems of large stimulation for production operators, large heat decay, and increased wear of brake pads, and achieves a simple, feasible and durable preparation method. Improved high temperature performance and good manufacturability

Inactive Publication Date: 2011-10-05
HUNAN BOYUN AUTOMOBILE BRAKE MATERIALS +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with asbestos sheets, metal fiber reinforced resin-based friction materials are more environmentally friendly and reduce the dust pollution of brake pads, but they have defects such as easy rust, high braking noise, easy damage to the dual disc, and serious dust fall.
In addition, since the matrix is ​​made of resin, there are problems such as large thermal decay and poor wear resistance at high temperatures.
Although carbon fiber, aramid fiber and ceramic whisker have excellent performance, they are expensive and not suitable for a large number of applications in automobile friction plates.
Glass fiber is cheap, but it is more irritating to the production operators, adding too much can lead to increased wear of the brake pads, and it is easy to generate braking noise

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ceramic fiber reinforced ceramic matrix automotive brake friction material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The formula of the ceramic fiber reinforced ceramic matrix composite friction material provided by the present invention:

[0022] Modified sodium aluminosilicate 20(wt.%), phenolic resin / nitrile rubber 5(wt.%),

[0023] Alumina fiber 35(wt.%), aramid pulp 2(wt.%),

[0024] Graphite 6(wt.%), antimony sulfide 7(wt.%),

[0025] Chromite 2(wt.%), Organic Friction Powder 2(wt.%),

[0026] Barite 14 (wt.%), composite filler 7 (wt.%).

[0027] In this formula system, the ceramic binder is mainly modified sodium aluminosilicate as a high-temperature binder, which can significantly improve the temperature resistance of the material, reduce the wear of the material at high temperature, and make the material form a network Shaped porous structure increases braking stability and reduces braking noise. In order to continue to use the molding process and production equipment of resin-based automobile brake pads, a small amount of resin and rubber is added to reduce equipment inv...

Embodiment 2

[0040] The formula of the ceramic fiber reinforced ceramic matrix composite friction material provided by the present invention:

[0041] Ceramic binder 10(wt.%), phenolic resin / nitrile rubber 10(wt.%),

[0042] Alumina fiber 20(wt.%), aramid pulp 2(wt.%),

[0043] Graphite 16(wt.%), antimony sulfide 8(wt.%),

[0044] Chromite 4(wt.%), Organic Friction Powder 5(wt.%),

[0045] Barite 17 (wt.%), composite filler 8 (wt.%).

[0046] The preparation process of ceramic fiber reinforced ceramic base automobile brake friction material comprises the following steps:

[0047] (1), batching: weigh each component material according to the above ratio;

[0048] (2) Mixing: Put the weighed materials into the high-speed mixer, and the mixing time is 5 minutes;

[0049] (3) Molding: Weigh the mixture according to the model of the brake pad, pour it into the hot pressing mold, and the pressing pressure is 200kgf / cm 2 , the hot-pressing temperature is 200°C, the exhaust is 10 times, and ...

Embodiment 3

[0053] The formula of the ceramic fiber reinforced ceramic matrix composite friction material provided by the present invention:

[0054] Modified sodium aluminosilicate 18(wt.%), phenolic resin / nitrile rubber 8(wt.%),

[0055] Alumina fiber 27(wt.%), aramid pulp 1(wt.%),

[0056] Graphite 12(wt.%), antimony sulfide 3(wt.%),

[0057] Chromite 3(wt.%), Organic Friction Powder 4(wt.%),

[0058] Barite 20 (wt.%), composite filler 4 (wt.%).

[0059] The preparation process of ceramic fiber reinforced ceramic base automobile brake friction material comprises the following steps:

[0060] (1), batching: weigh each component material according to the above ratio;

[0061] (2) Mixing: Put the weighed materials into the high-speed mixer, and the mixing time is 5 minutes;

[0062] (3) Molding: Weigh the mixture according to the model of the brake pad, pour it into the hot pressing mold, and the pressing pressure is 260kgf / cm 2 , the hot-pressing temperature is 180°C, the exhaust i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a ceramic fiber reinforced ceramic matrix automotive brake friction material and a preparation method thereof. According to a formula, the material comprises the following components by weight percent: 10-20 percent of modified sodium aluminosilicate, 5-10 percent of phenol-formaldehyde resin / nitrile rubber, 20 to 35 percent of alumina fibre, 1-2 percent of aramid fiber pulp, 6-16 percent of graphite, 3-8 percent of antimony sulphide, 2-4 percent of chromite, 2-5 percent of organic friction powder, 10-20 percent of barite, and 4-8 percent of composite filler.

Description

technical field [0001] The invention relates to an automobile brake friction material, in particular to a ceramic fiber reinforced ceramic matrix composite friction material used in an automobile brake system, and also relates to a preparation method of the composite friction material. Background technique [0002] Automobile brake pads are the key components of Class A of the automobile braking system, and their performance is directly related to the safety and reliability of automobile operation. At present, the mainstream automobile brake pads on the market all use metal or metal-less resin-based friction materials. Compared with asbestos sheets, metal fiber reinforced resin-based friction materials are more environmentally friendly and reduce the dust pollution of brake pads, but they have defects such as easy corrosion, loud braking noise, easy damage to the dual disc, and serious dust fall. In addition, since the matrix is ​​made of resin, there are problems such as l...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02
Inventor 刘伯威黄伯云杨阳
Owner HUNAN BOYUN AUTOMOBILE BRAKE MATERIALS