Carbon fiber brake pad material with porous structure and preparation method of carbon fiber brake pad material

A porous structure, carbon fiber technology, used in chemical instruments and methods, friction linings, mechanical equipment, etc., can solve the problem that carbon fibers cannot effectively transmit loads, affect the strength and wear resistance of composite materials, and the friction coefficient and wear rate fluctuations are relatively high. Large and other problems, to achieve the effect of increasing the effective bonding area, improving the tensile strain capacity, and reducing damage

Active Publication Date: 2018-10-16
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing carbon fiber composite brake pads still have some limitations. Firstly, the carbon fiber is directly combined with the matrix resin, and it is difficult to form a stable and firm bonding interface between the resin and the carbon fiber. When the force is applied, the carbon fiber as the reinforcing phase cannot effectively transmit the load and prevent the crack from expanding, thereby affecting the strength and wear resistance of the composite material; secondly, the instantaneous temperature of the existing carbon fiber composite brake pads may be high during high-speed emergency braking. When it reaches 500°C, carbon fiber will carbonize when it exceeds 400°C in the air, and the specific performance is that the friction coefficient and wear rate fluctuate greatly, thus affecting the braking effect

Method used

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  • Carbon fiber brake pad material with porous structure and preparation method of carbon fiber brake pad material
  • Carbon fiber brake pad material with porous structure and preparation method of carbon fiber brake pad material
  • Carbon fiber brake pad material with porous structure and preparation method of carbon fiber brake pad material

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Effect test

Embodiment 1

[0034] A carbon fiber brake pad material with a porous structure, which uses carbon fiber-carbon nanotube composite fibers and fillers as a matrix, uses cashew nut oil modified phenolic resin as a binder, and is obtained by adding pore-forming agent ammonium carbonate and adopting a dry hot pressing molding process The fillers include graphite, titanium oxide, aluminum oxide, iron, nitrile rubber, antimony trisulfide, barium sulfate, mica, and vermiculite; the components and mass percentages in the adhesive and the matrix are: cashew nut oil modified phenolic 15% resin, 22% carbon fiber-carbon nanotube composite fiber, 6% graphite, 2% titanium oxide, 2% aluminum oxide, 2% iron, 15% nitrile rubber, 6% antimony trisulfide, 16% barium sulfate, 6% of mica, 8% of vermiculite; the mass percentage of the pore-forming agent ammonium carbonate is 16% of the total mass of the binder and the matrix.

[0035] The preparation method of the above-mentioned carbon fiber brake pad material wi...

Embodiment 2

[0045] A carbon fiber brake pad material with a porous structure, which uses carbon fiber-carbon nanotube composite fibers and fillers as a matrix, uses cashew nut oil modified phenolic resin as a binder, and is obtained by adding pore-forming agent ammonium carbonate and adopting a dry hot pressing molding process The fillers include graphite, titanium oxide, aluminum oxide, iron, nitrile rubber, antimony trisulfide, barium sulfate, mica, and vermiculite; the components and mass percentages in the adhesive and the matrix are: cashew nut oil modified phenolic 10% resin, 28% carbon fiber-carbon nanotube composite fiber, 5% graphite, 2% titanium oxide, 3% aluminum oxide, 3% iron, 15% nitrile rubber, 6% antimony trisulfide, 15% barium sulfate, 6% of mica, 7% of vermiculite; the mass percentage of the pore-forming agent ammonium carbonate is 18% of the total mass of the binder and the matrix.

[0046] The preparation method of the above-mentioned carbon fiber brake pad material wi...

Embodiment 3

[0056] A carbon fiber brake pad material with a porous structure, which uses carbon fiber-carbon nanotube composite fibers and fillers as a matrix, uses cashew nut oil modified phenolic resin as a binder, and is obtained by adding pore-forming agent ammonium carbonate and adopting a dry hot pressing molding process The fillers include graphite, titanium oxide, aluminum oxide, iron, nitrile rubber, antimony trisulfide, barium sulfate, mica, and vermiculite; the components and mass percentages in the adhesive and the matrix are: cashew nut oil modified phenolic 8% resin, 30% carbon fiber-carbon nanotube composite fiber, 5% graphite, 2% titanium oxide, 3% aluminum oxide, 3% iron, 15% nitrile rubber, 6% antimony trisulfide, 15% barium sulfate, 6% of mica, 7% of vermiculite; the mass percentage of the pore-forming agent ammonium carbonate is 20% of the total mass of the binder and the matrix.

[0057] The preparation method of the above-mentioned carbon fiber brake pad material wit...

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Abstract

The invention discloses a carbon fiber brake pad material with a porous structure and a preparation method of the carbon fiber brake pad material. The preparation method is characterized in that a composite fiber of carbon fiber-carbon nanotubes (CF-CNTs) and a filler serve as a matrix, cashew nut oil modified phenolic resin is taken as an adhesive, a pore forming agent is added to obtain the porous structure, and the carbon fiber brake pad material is prepared by adopting a dry hot press molding technology. The carbon fiber brake pad material with the porous structure has the advantages of being simple in formula, low in density, low in braking noise, excellent in heat dissipation performance, good in strength and wear resistance and the like; and in addition, a pore structure of a brakepad can contain certain grinding scraps, so that damage to a brake disc or a brake drum caused by the grinding scraps is reduced.

Description

technical field [0001] The invention relates to a carbon fiber brake pad material with a porous structure and a preparation method thereof, belonging to the field of the automobile industry. Background technique [0002] Automobiles have increasingly become a means of transportation for people's daily travel, and their braking performance has attracted widespread attention. During the emergency braking process of the car, the intense friction between the brake pads and the brake disc / brake drum will not only generate a lot of heat and wear debris, but also make harsh noises. Once the heat generated cannot be dissipated in time, it will lead to local carbonization of the brake pads, reduce the braking performance of the brake pads, and affect driving safety (Bao Xiangming. Analysis of the reasons for the braking noise of automobile brake pads [J]. Theoretical research on urban construction: electronics Edition, 2013(24).). In addition, under the action of contact stress, cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
CPCF16D69/023F16D2200/006F16D2200/0086
Inventor 史晓亮陈远邓骁斌闫昭卢冠辰刘锡尧黄玉春
Owner WUHAN UNIV OF TECH
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