Automobile brake pad made from semimetal composite material
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A technology of composite materials and brake pads, which is applied in the field of brake pad manufacturing, can solve the problems of semi-metallic brake pads being eliminated, instability, and braking hazards, and achieve excellent thermal shock resistance, high temperature friction performance, and anti-aging performance Strong and stable friction coefficient effect
Inactive Publication Date: 2020-01-07
HUANGSHI JINZHAOYANG POWDER MATERIALS
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Abstract
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Problems solved by technology
[0005] The purpose of the present invention is to provide a semi-metallic composite automobile brake pad for the problems that the existing asbestos br
Method used
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Embodiment 1
[0023] A kind of semi-metallic composite automobile brake pad of the present embodiment is made up of following raw materials in parts by weight:
[0024] Steel Fiber 35 Iron Powder 3
[0025] Tantalum Powder 3 Barite 30
[0026] Modified phenolic resin 25 nm graphite 4
[0027] Silica 3 Carbon Fiber 0.5
[0028] Graphite powder 15 n-Butyl stearate 6
[0029] carbon nanotubes 6 basalt fibers 6;
[0030] When preparing, first crush the modified phenolic resin, then dissolve it with ethanol to form a phenolic ethanol solution, then add steel fiber, iron powder, tantalum powder, barite, nano-graphite and other powders in turn, mix well, take out the mixture and put it in Heat treatment in the oven at 60-90°C for 1-2 hours, after the baking, put the mixture into the brake pad mold and hot press at 160-180°C for 10-20 minutes, the pressing pressure is 20-30MPa, hot pressing After the mold is finished, it is cooled and packaged, and it is ready.
Embodiment 2
[0032] A kind of semi-metallic composite automobile brake pad of the present embodiment is made up of following raw materials in parts by weight:
[0033] Steel Fiber 40 Iron Powder 1
[0034] Tantalum powder 5 Barite 25
[0035] Modified phenolic resin 30 nm graphite 2
[0036] Silica 4 Carbon Fiber 0.1
[0037] Graphite powder 20 n-Butyl stearate 4
[0038] carbon nanotubes 8 basalt fibers 4;
[0039] The preparation method is the same as in Example 1.
Embodiment 3
[0041] A kind of semi-metallic composite automobile brake pad of the present embodiment is made up of following raw materials in parts by weight:
[0042] Steel Fiber 30 Iron Powder 5
[0043] Tantalum Powder 1 Barite 35
[0044] Modified phenolic resin 20 nm graphite 5
[0045] Silica 2 Carbon Fiber 1
[0046] Graphite powder 10 n-Butyl stearate 8
[0047] carbon nanotubes 4 basalt fibers 8;
[0048] The preparation method is the same as in Example 1.
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Abstract
The invention relates to the technical field of manufacturing of automobile brake pads, in particular to an automobile brake pad made from a semimetal composite material. The automobile brake pad is prepared from the following raw materials: steel fibers, iron powder, tantalum powder, barite, modified phenolic resin, nano graphite, white carbon black, carbon fibers, graphite powder, n-butyl stearate, a carbon nanotube and basalt fibers. A preparation method comprises the following steps: first, crushing the modified phenolic resin; dissolving the modified phenolic resin into a phenolic ethanolsolution by ethanol; then successively adding various powder; uniformly mixing the powder and putting the mixture in an oven to be thermally treated for 1-2 hours at 60-90 DEG C; after drying, putting the mixed material in a brake pad mold to be thermally pressed for 10-20 minutes at 160-180 DEG C, wherein the pressing pressure is 20-30 MPa; and after thermal pressing, carrying out mold stripping, cooling and packaging to obtain the brake pad. The brake pad overcomes the problem that a brake fails as an existing semimetal brake pad braking frequently is at a high temperature and is overheatedto deform and has stable friction coefficient, excellent thermal shock resistance and high-temperature friction performance.
Description
technical field [0001] The invention belongs to the technical field of brake pad manufacturing, in particular to a semi-metallic composite automobile brake pad. Background technique [0002] Brake pads are the most critical safety braking parts in the braking system of a car. Brake pads play a decisive role in whether the braking effect is good or not. Brake pads are generally composed of steel plates, adhesive heat insulation layers and friction blocks. The heat insulation layer It is composed of materials that do not conduct heat, and the purpose is to insulate. The friction block is composed of friction material and adhesive, which is squeezed on the brake disc or brake drum to generate friction during braking, so as to achieve the purpose of vehicle deceleration and braking. Due to friction, the friction block will be gradually worn, generally speaking, the lower the cost of the brake pads, the faster the wear. After the friction material is used up, the brake pads sho...
Claims
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Application Information
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