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Friction Material Formulations for Creep Noise Reduction

A friction material and noise technology, applied in the direction of friction linings, mechanical equipment, etc., can solve the problem of high correlation of friction materials, and achieve the effect of reducing creep noise

Active Publication Date: 2016-02-10
CHONGQING HONGYU FRICTION PROD
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Problems solved by technology

[0002] There are many classification methods for car brake noise. According to the vehicle motion state, it can be divided into driving brake noise, parking brake noise, and creep noise in the state of non-motion (that is, the momentary state after starting the engine); for advanced As far as cars are concerned, interior noise is one of the important factors that affect the driving experience. Among them, there is a great correlation between driving brake noise and parking brake noise and the driver's habit of using brakes. As long as the driving operation is reasonable, completely It can be ignored, but the creep noise mostly occurs when the vehicle is in the state of moving or not, and its occurrence is closely related to the friction material on the disc brake pad. At present, there is no corresponding method in the industry to solve the creep noise question

Method used

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Embodiment Construction

[0006] A friction material formula that can reduce creeping noise. The scheme is as follows: the various components in the formula and the weight ratio relationship are: 26% mineral fiber, 7% phenolic resin, 5% artificial graphite, 4% coke particles, Antimony sulfide 5%, iron red 8%, gypsum whisker 10%, aramid fiber 2%, copper fiber 11%, barium sulfate 20%, nitrile rubber powder 2%.

[0007] For the convenience of those skilled in the art to implement, the inventor also discloses the following preferred process:

[0008] 1) Mixing: mix the various substances in the formula evenly in proportion to obtain the mixture;

[0009] 2) Hot pressing: Press the mixture under the condition of 20Mpa pressure and 150-160°C temperature, degas for 10s every 20s, cycle four times, and finally pressurize for 400s to get the friction plate;

[0010] 3) Heat treatment: keep the friction sheet prepared in step 2) at 120°C for 1 hour, then at 140°C for 1 hour, then at 160°C for 1 hour, and then a...

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Abstract

A friction material prescription with the function of reducing peristalsis noise is characterized by comprising the following components by weight: 26% of mineral fiber, 7% of phenolic resin, 5% of artificial graphite, 4% of coke particle, 5% of antimony sulfide, 8% of iron oxide red, 10% of gypsum whisker, 2% of aramid fiber, 11% of red copper fiber, 20% of barium sulfate, and 2% of nitrile butadiene rubber powder. The friction material has a good technical benefit of reducing the peristalsis noise.

Description

technical field [0001] The invention relates to a vehicle brake friction material, in particular to a friction material formula capable of reducing creeping noise. Background technique [0002] There are many classification methods for car brake noise. According to the vehicle motion state, it can be divided into driving brake noise, parking brake noise, and creep noise in the state of non-motion (that is, the momentary state after starting the engine); for advanced As far as cars are concerned, interior noise is one of the important factors that affect the driving experience. Among them, there is a great correlation between driving brake noise and parking brake noise and the driver's habit of using brakes. As long as the driving operation is reasonable, completely It can be ignored, but the creep noise mostly occurs when the vehicle is in the state of moving or not, and its occurrence is closely related to the friction material on the disc brake pad. At present, there is no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02
Inventor 雒丁代赵勇王丹膺
Owner CHONGQING HONGYU FRICTION PROD
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