High-performance composite brake disc material

A brake pad, high-performance technology, applied in the field of high-performance composite brake pad materials, can solve the problems of non-wear resistance, poor friction stability of brake pads, thermal decomposition, etc., to reduce high temperature thermal degradation, good interface bonding, and enhanced friction The effect of the coefficient

Inactive Publication Date: 2015-09-09
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, asbestos brake pads are mostly used as brake pad friction materials for vehicles. Every time a brake is applied, the brake pads will emit millions of asbestos fibers into the air, and the needle-shaped limit is easy Enter the lungs and stay there, causing irritation, which can eventually lead to the occurrence of lung cancer
But in addition to the health hazards, there is another important problem with asbestos brake pads
Because asbestos is heat-insulating, its thermal conductivity is particularly poor. After repeated use of the brakes, the heat will accumulate in the brake pads. After the brake pads become hot, their braking performance will change, and the same friction and braking force will be produced. More brakes will be required, and if the brake pads reach a certain level of heat, the brakes will fail
In addition, asbestos in asbestos brake pads is difficult to fully bond with other components in the brake pads, and it is easy to peel off, and it is not wear-resistant and has a short service life.
Therefore, resin-based materials have begun to replace asbestos as another commonly used wear-resistant material for brake pads. However, resin-based friction materials are prone to severe thermal decomposition when the operating temperature is high, causing a serious decline in friction and wear performance, thereby reducing the service life.
The existing brake pads still have a mismatch with the dual, resulting in resonance or poor friction stability between the disc and the brake pad, and the brake pad and the brake dual vary with the braking specific pressure, temperature, and speed, and the materials of the two sides adhere to each other noise problems

Method used

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  • High-performance composite brake disc material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The wear-resistant material raw material includes the following components by weight: 15 parts of bisphenol A novolak epoxy resin, 6 parts of diaminodiphenyl sulfone, 3 parts of hollow microspheres, 7 parts of lubricant, 3 parts of silane coupling agent , 5 parts of chloroprene rubber powder, 4 parts of aluminum oxide, 15 parts of reinforcing fiber, 3 parts of antimony trioxide, 6 parts of graphite, 3.5 parts of triethanolamine borate, the reinforcing fiber is celluloid fiber, aromatic A mixture of nylon fiber, cotton fiber and ramie fiber.

[0028] In this embodiment, the hollow microspheres are aluminum silicate hollow microspheres. In this embodiment, the aluminum silicate hollow microspheres are replaced with carbon hollow microspheres and silicon dioxide hollow microspheres according to the same weight. One, or replace it with a mixture of aluminum silicate hollow microspheres, carbon hollow microspheres, and silicon dioxide hollow microspheres in equal parts by we...

Embodiment 2

[0033] In the high-performance composite brake pad material of this embodiment, the wear-resistant material raw material includes the following components in parts by weight: 10 parts of bisphenol A novolac epoxy resin, 4 parts of diaminodiphenyl sulfone, 1 part of hollow microspheres, 1 part of lubricant, 1 part of silane coupling agent, 0.5 part of diamine, 1 part of imidazole compound, 1 part of antioxidant, 1 part of neoprene powder, 2 parts of aluminum oxide, 10 parts of reinforcing fiber, 2 parts Part triethanolamine borate, 1 part antimony trioxide, 3 parts graphite;

[0034] The reinforcing fiber is a mixture of celluloid fiber, aramid fiber, cotton fiber and ramie fiber.

[0035] In this embodiment, the hollow microspheres are carbon hollow microspheres. In this embodiment, the carbon hollow microspheres are replaced with one of aluminum silicate hollow microspheres and silicon dioxide hollow microspheres according to the same weight. species, or replace it with a mi...

Embodiment 3

[0040] In the high-performance composite brake pad material of this embodiment, the wear-resistant material raw material includes the following components by weight: 18 parts of bisphenol A novolac epoxy resin, 8 parts of diaminodiphenyl sulfone, 5 parts of hollow microspheres, 10 parts of lubricant, 5 parts of silane coupling agent, 3 parts of diamine, 3 parts of imidazole compound, 5 parts of antioxidant, 10 parts of neoprene powder, 6 parts of aluminum oxide, 20 parts of reinforcing fiber, 5 parts Parts of triethanolamine borate, 5 parts of antimony trioxide, 8 parts of graphite;

[0041] The reinforcing fiber is a mixture of celluloid fiber, aramid fiber, cotton fiber and ramie fiber.

[0042] In this embodiment, the hollow microspheres are silica hollow microspheres. In this embodiment, the silica hollow microspheres are replaced with carbon hollow microspheres and aluminum silicate hollow microspheres according to the same weight. One, or replace it with a mixture of si...

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Abstract

The invention discloses a high-performance composite brake disc material, the wear resistant material comprises the following raw materials: bisphenol a novolac epoxy resin, diaminodiphenyl sulfone, hollow microspheres, a lubricant, a silane coupling agent, diamine, an imidazoles compound, an anti-oxidant, chloroprene rubber powder, alumina and reinforced fibers. The reinforced fibers can be a mixture of zylonite fiber, aramid fiber, cotton fiber and ramie fiber; the interface combination of fiber and particles in the materials is good, and the fiber and particles in the materials enable synergistic interaction with antimonony oxide and graphite, generation of thermal decomposition, heat attenuation and heat cracks phenomena can be effectively reduced, thermal conductivity of the materials is good, heat generated when brake friction is carried out can be timely radiated, brake disc surface temperature can be rapidly reduced, high temperature heat attenuation is reduced, hollow microspheres, the lubricant, the silane coupling agent and the enhance fiber are specific, friction coefficient of the wear resistant materials can be enhanced by intermolecular cooperation of the substances, and stability of the friction coefficient can be improved simultaneously.

Description

technical field [0001] The invention relates to the field of automobile materials, in particular to a high-performance composite brake pad material. Background technique [0002] Brake pads are also called brake pads or brake pads. In the braking system of a car, brake pads are the most critical safety parts and play a decisive role in the braking effect. Brake pads are generally composed of steel plates, bonded heat insulation layers and friction blocks. The friction block is composed of friction material and adhesive. When braking, the friction block is squeezed on the brake disc or brake drum to generate friction with it, so as to achieve the purpose of decelerating and braking the vehicle. It can be seen that the friction block determines the performance of the brake pad under high-speed and high-temperature braking conditions, and the friction material is an important part of the brake pad in the manufacturing process and use process. In the prior art, asbestos brake ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/04C08L11/00C08L77/00C08L1/02C08L97/02C08K13/04C08K7/26C08K3/22C08K3/04C08K3/38F16D69/02
Inventor 邓涛韩海硕
Owner CHONGQING JIAOTONG UNIVERSITY
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