Low-noise and high-temperature-resisting drum type friction plate produced through three-layer materials and preparing method of low-noise and high-temperature-resisting drum type friction plate

Abstract

The invention relates to a low-noise and high-temperature-resisting drum type friction plate produced through three-layer materials and a preparing method of the low-noise and high-temperature-resisting drum type friction plate. The drum type friction plate comprises a face material layer, a damping layer and a bottom material layer. Materials of the damping layer include, by weight, 3-5 parts ofphenolic resin, 70-80 parts of noise lowering particles, 5-10 parts of jute fiber and 5-10 parts of chemigum. The noise lowering particles include, by weight, 10-20 parts of solid-state butadiene styrene rubber, 5-10 parts of liquid-state phenolic resin, 10-20 parts of coke powder, 20-40 parts of phenolic resin modified tree powder, 10-20 parts of vermiculite, 5-10 parts of mineral fiber and 0.2-0.4 part of a vulcanization system. The invention provides a method for avoiding braking noise. Through usage of the middle damping layer, vibration energy is effectively absorbed, and the excitation source of the system is lowered; meanwhile, through mixing usage of the rubber, the coke powder with the high porosity, the modified tree powder and the vermiculite in the noise lowering particles in the damping layer, the product has low hardness and a high compression rate, and the middle damping layer has a good noise eliminating and lowering effect.

Description

technical field [0001] The invention relates to the technical field of friction materials, in particular to a low-noise and high-temperature-resistant drum friction plate produced from three-layer materials and a preparation method thereof. Background technique [0002] Friction plate is a key safety component of the automobile braking system. At present, the industry has mature technical solutions to solve the braking safety, but there are not many ways to solve the braking noise and high temperature resistance. The common drum type The phenolic resin or modified phenolic resin is used in the formula of the friction lining. Since the initial decomposition temperature of the phenolic resin is between 300°C and 350°C, the friction lining will start to decompose when it is higher than 350°C, the braking performance will decrease, and the wear will accelerate. There are certain safety risks at higher temperatures. As the speed of commercial trucks becomes faster and faster, acc...

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Problems solved by technology

[0002] Friction plate is a key safety component of the automobile braking system. At present, the industry has mature technical solutions to solve the braking safety, but there are not many ways to solve the braking noise and high temperature resistance. The common drum type The phenolic resin or modified phenolic resin is used in the formula of the friction lining. Since the initial decomposition temperature of the phenolic resin is between 300°C and 350°C, the friction lining will start to decompose when it is higher than 350°C, the braking performance will decrease, and the wear will accelerate. There are certain safety risks at higher temperatures. As the speed of commercial trucks becomes faster and faster, according to the law of energy conversion, the operating temperature of vehicles is also higher and higher. The traditional drum friction plate can no longer meet the requirements.

[0003] Braking noise is a systemic problem, and its mechanism is random and complex. With the increasing pursuit of comfort by end customers, the requirements for braking noise are getting higher and higher. At present, friction alone In terms of material performance, the effect of improving brake noise is not good, but due to structural limitations, drum friction pads cannot be bonded with sound-absorbing pads like disc brake pads to achieve the effect of shock absorption

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