Ceramic brake pad with high performance for middle-to-high grade sedan

Abstract

A ceramic brake pad with high performance for middle-to-high grade sedan comprises the following components according to weight percentages: 7%-11% of ceramic fibre, 5-8% of silicate fibre, 6-9% of glued aluminium silicate fibre, 5-8% of aramid fibre, 7-10% of red copper fibre, 6-9% of modified aedelforsite, 7-12% of barite, 4-8% of chromite, 1-2% of butyronitrile rubber, 2-4% of iron oxide black, 7-10% of graphite particle, 0.1-0.2% of zinc oxide, 4-8.5% of calcined petroleum coke, 1-3% of expansion graphite, 5-9% of boron containing phenolic resin, 3-5% of magnetite, 0.8-1.3% of heavy-burned magnesia, 0.8-1.5% of silicon carbide, 4-7.5% of barium sulfate crystal whisker, 0.3-0.5% of potassium titanate crystal whisker and 1-2.5% of alumina fibre; the ceramic brake pad made of the formula has lower density and excellent wear resistance, and is especially suitable for the middle-to-high grade sedan.

Description

technical field

[0001] The invention relates to an automobile brake pad, in particular to a high-performance ceramic brake pad for medium and high-grade cars. Background technique

[0002] Earlier car brake pads were asbestos-type brake pads, but it has now been found that asbestos has been confirmed by the medical community to be a carcinogen. Every time you brake, the brake pads emit millions of asbestos fibers into the air. The needle-like fibers can easily enter the lungs and stay there, causing irritation and eventually lung cancer, but in addition to the health hazards In addition to the factors of asbestos brake pads, there is another important problem. Since asbestos is adiabatic, its thermal conductivity is particularly poor. After repeated use of the brake, heat will accumulate in the brake pad. After the brake pad becomes hot, its braking performance will change, and the same friction and braking force must be generated. It will take more times to step on the br...

Examples

Embodiment 1

[0015] Example 1: 7% of ceramic fiber, 8% of silicate fiber, 6% of sprayed aluminum silicate fiber, 8% of aramid fiber, 7% of copper fiber, 6% of acicular wollastonite fiber , barite powder 12%, chromite powder 5%, nitrile rubber powder 1%, iron oxide black 2%, graphite particles 7%, zinc oxide 0.2%, calcined petroleum coke 8.5%, expanded graphite 3%, 9% boron phenolic resin, 3% magnetite, 1% heavy magnesium oxide, 0.8% silicon carbide, 4% barium sulfate whisker, 0.4% potassium titanate whisker, and 1.5% alumina fiber into the high-speed disperser , after stirring into powder, take it out and put it into the forming mold for pressing, and then compound with the steel back and put it into a flat vulcanizer at a high temperature of 270 ° C and a pressure of 18 MPa for 15 minutes, then take out the brake pad, remove the burr become a finished product. The components contained in the silicate fibers used in this embodiment and their weight-to-white ratio are: SiO 2 54%, Al 2 O ...

Embodiment 2

[0016] Example 2: 11% of ceramic fiber, 5% of silicate fiber, 9% of sprayed aluminum silicate fiber, 5% of aramid fiber, 10% of copper fiber, 6% of acicular wollastonite fiber , barite powder 8%, chromite powder 4%, nitrile rubber powder 2%, iron oxide black 4%, graphite particles 10%, zinc oxide 0.2%, calcined petroleum coke 4%, expanded graphite 1%, 5% boron phenolic resin, 5% magnetite, 0.8% heavy magnesium oxide, 1.5% silicon carbide, 7% barium sulfate whisker, 0.5% potassium titanate whisker, and 1% alumina fiber into the high-speed disperser , after stirring into powder, take it out and put it into the forming mold for pressing, and then compound with the steel back and put it into a flat vulcanizer at a high temperature of 270 ° C and a pressure of 18 MPa for 15 minutes, then take out the brake pad, remove the burr become a finished product. The components contained in the silicate fibers used in this embodiment and their weight-to-white ratio are: SiO 2 54%, Al 2 O ...

Embodiment 3

[0017] Example 3: 8% of ceramic fiber, 6% of silicate fiber, 7% of sprayed aluminum silicate fiber, 6% of aramid fiber, 8% of copper fiber, 8% of acicular wollastonite fiber , barite powder 9%, chromite powder 7%, nitrile rubber powder 2%, iron oxide black 3%, graphite particles 8.6%, zinc oxide 0.2%, calcined petroleum coke 6%, expanded graphite 2%, 5% boron phenolic resin, 4% magnetite, 1.3% heavy magnesium oxide, 1% silicon carbide, 5% barium sulfate whisker, 0.4% potassium titanate whisker, and 2.5% alumina fiber into the high-speed disperser , after stirring into powder, take it out and put it into the forming mold for pressing, then compound it with the steel back and put it into a flat vulcanizer at a high temperature of 270 ° C and a pressure of 18 MPa for 15 minutes, then take out the brake pads, remove the burrs, that is, become a finished product. The components contained in the silicate fibers used in this embodiment and their weight-to-white ratio are: SiO 2 54%...

technical field

[0001] The invention relates to an automobile brake pad, in particular to a high-performance ceramic brake pad for medium and high-grade cars. Background technique

[0002] Earlier car brake pads were asbestos-type brake pads, but it has now been found that asbestos has been confirmed by the medical community to be a carcinogen. Every time you brake, the brake pads emit millions of asbestos fibers into the air. The needle-like fibers can easily enter the lungs and stay there, causing irritation and eventually lung cancer, but in addition to the health hazards In addition to the factors of asbestos brake pads, there is another important problem. Since asbestos is adiabatic, its thermal conductivity is particularly poor. After repeated use of the brake, heat will accumulate in the brake pad. After the brake pad becomes hot, its braking performance will change, and the same friction and braking force must be generated. It will take more times to step on the br...

Examples

Embodiment 1

[0015] Example 1: 7% of ceramic fiber, 8% of silicate fiber, 6% of sprayed aluminum silicate fiber, 8% of aramid fiber, 7% of copper fiber, 6% of acicular wollastonite fiber , barite powder 12%, chromite powder 5%, nitrile rubber powder 1%, iron oxide black 2%, graphite particles 7%, zinc oxide 0.2%, calcined petroleum coke 8.5%, expanded graphite 3%, 9% boron phenolic resin, 3% magnetite, 1% heavy magnesium oxide, 0.8% silicon carbide, 4% barium sulfate whisker, 0.4% potassium titanate whisker, and 1.5% alumina fiber into the high-speed disperser , after stirring into powder, take it out and put it into the forming mold for pressing, and then compound with the steel back and put it into a flat vulcanizer at a high temperature of 270 ° C and a pressure of 18 MPa for 15 minutes, then take out the brake pad, remove the burr become a finished product. The components contained in the silicate fibers used in this embodiment and their weight-to-white ratio are: SiO 2 54%, Al 2 O ...

Embodiment 2

[0016] Example 2: 11% of ceramic fiber, 5% of silicate fiber, 9% of sprayed aluminum silicate fiber, 5% of aramid fiber, 10% of copper fiber, 6% of acicular wollastonite fiber , barite powder 8%, chromite powder 4%, nitrile rubber powder 2%, iron oxide black 4%, graphite particles 10%, zinc oxide 0.2%, calcined petroleum coke 4%, expanded graphite 1%, 5% boron phenolic resin, 5% magnetite, 0.8% heavy magnesium oxide, 1.5% silicon carbide, 7% barium sulfate whisker, 0.5% potassium titanate whisker, and 1% alumina fiber into the high-speed disperser , after stirring into powder, take it out and put it into the forming mold for pressing, and then compound with the steel back and put it into a flat vulcanizer at a high temperature of 270 ° C and a pressure of 18 MPa for 15 minutes, then take out the brake pad, remove the burr become a finished product. The components contained in the silicate fibers used in this embodiment and their weight-to-white ratio are: SiO 2 54%, Al 2 O ...

Embodiment 3

[0017] Example 3: 8% of ceramic fiber, 6% of silicate fiber, 7% of sprayed aluminum silicate fiber, 6% of aramid fiber, 8% of copper fiber, 8% of acicular wollastonite fiber , barite powder 9%, chromite powder 7%, nitrile rubber powder 2%, iron oxide black 3%, graphite particles 8.6%, zinc oxide 0.2%, calcined petroleum coke 6%, expanded graphite 2%, 5% boron phenolic resin, 4% magnetite, 1.3% heavy magnesium oxide, 1% silicon carbide, 5% barium sulfate whisker, 0.4% potassium titanate whisker, and 2.5% alumina fiber into the high-speed disperser , after stirring into powder, take it out and put it into the forming mold for pressing, then compound it with the steel back and put it into a flat vulcanizer at a high temperature of 270 ° C and a pressure of 18 MPa for 15 minutes, then take out the brake pads, remove the burrs, that is, become a finished product. The components contained in the silicate fibers used in this embodiment and their weight-to-white ratio are: SiO 2 54%...

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