A brake pad for a disc brake

Abstract

The invention discloses a brake block for a disc brake. The brake block consists of a back plate, a thermal insulating layer and a friction material, wherein the back plate is made of a stainless steel material; the thermal insulating layer is prepared from foamed polyurethane, polyimide, glass cotton, silica-rich cotton and aluminum polyester; the friction material is prepared from thermosetting phenolic resin, thermosetting epoxy resin, short carbon fiber, aramid fiber, kaolin, graphite, molybdenum disulfide, sodium polyacrylate and polytetrafluoroethylene. The brake block for the disc brake, disclosed by the invention, is good in friction stability, low in cost, low in density, good in brake property, good in abrasion resistance, low in brake noise and good in environment resistance, and product standards which are improved day by day in the automobile manufacturing industry can be met.

Description

technical field

[0001] The invention relates to the field of friction linings, in particular to a brake lining for disc brakes. Background technique

[0002] Brake pads are braking materials that must be assembled in power machinery and motor vehicles, and their performance directly affects the stability and reliability of vehicles and equipment. The core material of the brake pad is the friction material. According to the composition of friction materials, brake pads can be divided into: asbestos brake pads, semi-metallic brake pads, NAO brake pads (asbestos-free organic brake pads).

[0003] Among them, asbestos brake pads are gradually abandoned and replaced by the market due to strong thermal recession and strong carcinogenicity; semi-metallic brake pads replace asbestos brake pads due to their high friction coefficient, good thermal conductivity, and easy processing and molding. It occupies a leading position in the market, but there are also disadvantages such as hig...

Examples

Embodiment 1

[0031] A brake pad for a disc brake, which is composed of a back plate, a heat insulating layer and a friction material, the back plate is made of stainless steel; the heat insulating layer is prepared from the following raw materials in mass percentage: foamed polyurethane 50%, polyamide Imine 25%, glass wool 11%, high silica cotton 10%, aluminum polyester 4%; the friction material is prepared from the following raw materials in mass percentage: thermosetting phenolic resin 35%, thermosetting epoxy resin 40%, chopped carbon fiber 12%, aramid fiber 6%, kaolin 2%, graphite 2%, molybdenum disulfide 1%, sodium polyacrylate 1%, polytetrafluoroethylene 1%. Wherein, the mass percent content of the chromium element in the stainless steel material is 1%.

[0032] Wherein, the preparation method of heat insulation layer comprises the following steps:

[0033] Step A, preparation of heat insulation layer substrate: Combine foamed polyurethane, polyimide, glass wool, and high silica woo...

Embodiment 2

[0041] A brake pad for a disc brake, consisting of a back plate, a heat insulating layer and a friction material, the back plate is made of stainless steel; the heat insulating layer is prepared from the following raw materials in mass percentage: foam polyurethane 65%, polyamide 15% imine, 13% glass wool, 5% high silica cotton, 2% aluminum polyester; the friction material is prepared from the following raw materials in mass percentage: 45% thermosetting phenolic resin, 45% thermosetting epoxy resin 30%, chopped carbon fiber 11%, aramid fiber 5%, kaolin 2%, graphite 2%, molybdenum disulfide 2%, sodium polyacrylate 1%, polytetrafluoroethylene 2%. Wherein, the mass percent content of chromium element in the stainless steel material is 2%.

[0042] Wherein, the preparation method of heat insulation layer comprises the following steps:

[0043] Step A, preparation of heat insulation layer substrate: Combine foamed polyurethane, polyimide, glass wool, and high silica wool in seque...

Embodiment 3

[0051] A brake pad for a disc brake, which consists of a back plate, a heat insulating layer and a friction material, the back plate is made of stainless steel; the heat insulating layer is prepared from the following raw materials in mass percentage: foam polyurethane 57%, polyamide 20% imine, 12% glass wool, 8% high silica cotton, 3% aluminum polyester; the friction material is prepared from the following raw materials in mass percentage: 42% thermosetting phenolic resin, 42% thermosetting epoxy resin 37%, chopped carbon fiber 8%, aramid fiber 6%, kaolin 1.5%, graphite 1.5%, molybdenum disulfide 1.7%, sodium polyacrylate 0.8%, polytetrafluoroethylene 1.5%. Wherein, the mass percent content of chromium element in the stainless steel material is 1.5%.

[0052] Wherein, the preparation method of heat insulation layer comprises the following steps:

[0053] Step A, preparation of heat insulation layer substrate: Combine foamed polyurethane, polyimide, glass wool, and high silic...

technical field

[0001] The invention relates to the field of friction linings, in particular to a brake lining for disc brakes. Background technique

[0002] Brake pads are braking materials that must be assembled in power machinery and motor vehicles, and their performance directly affects the stability and reliability of vehicles and equipment. The core material of the brake pad is the friction material. According to the composition of friction materials, brake pads can be divided into: asbestos brake pads, semi-metallic brake pads, NAO brake pads (asbestos-free organic brake pads).

[0003] Among them, asbestos brake pads are gradually abandoned and replaced by the market due to strong thermal recession and strong carcinogenicity; semi-metallic brake pads replace asbestos brake pads due to their high friction coefficient, good thermal conductivity, and easy processing and molding. It occupies a leading position in the market, but there are also disadvantages such as hig...

Examples

Embodiment 1

[0031] A brake pad for a disc brake, which is composed of a back plate, a heat insulating layer and a friction material, the back plate is made of stainless steel; the heat insulating layer is prepared from the following raw materials in mass percentage: foamed polyurethane 50%, polyamide Imine 25%, glass wool 11%, high silica cotton 10%, aluminum polyester 4%; the friction material is prepared from the following raw materials in mass percentage: thermosetting phenolic resin 35%, thermosetting epoxy resin 40%, chopped carbon fiber 12%, aramid fiber 6%, kaolin 2%, graphite 2%, molybdenum disulfide 1%, sodium polyacrylate 1%, polytetrafluoroethylene 1%. Wherein, the mass percent content of the chromium element in the stainless steel material is 1%.

[0032] Wherein, the preparation method of heat insulation layer comprises the following steps:

[0033] Step A, preparation of heat insulation layer substrate: Combine foamed polyurethane, polyimide, glass wool, and high silica woo...

Embodiment 2

[0041] A brake pad for a disc brake, consisting of a back plate, a heat insulating layer and a friction material, the back plate is made of stainless steel; the heat insulating layer is prepared from the following raw materials in mass percentage: foam polyurethane 65%, polyamide 15% imine, 13% glass wool, 5% high silica cotton, 2% aluminum polyester; the friction material is prepared from the following raw materials in mass percentage: 45% thermosetting phenolic resin, 45% thermosetting epoxy resin 30%, chopped carbon fiber 11%, aramid fiber 5%, kaolin 2%, graphite 2%, molybdenum disulfide 2%, sodium polyacrylate 1%, polytetrafluoroethylene 2%. Wherein, the mass percent content of chromium element in the stainless steel material is 2%.

[0042] Wherein, the preparation method of heat insulation layer comprises the following steps:

[0043] Step A, preparation of heat insulation layer substrate: Combine foamed polyurethane, polyimide, glass wool, and high silica wool in seque...

Embodiment 3

[0051] A brake pad for a disc brake, which consists of a back plate, a heat insulating layer and a friction material, the back plate is made of stainless steel; the heat insulating layer is prepared from the following raw materials in mass percentage: foam polyurethane 57%, polyamide 20% imine, 12% glass wool, 8% high silica cotton, 3% aluminum polyester; the friction material is prepared from the following raw materials in mass percentage: 42% thermosetting phenolic resin, 42% thermosetting epoxy resin 37%, chopped carbon fiber 8%, aramid fiber 6%, kaolin 1.5%, graphite 1.5%, molybdenum disulfide 1.7%, sodium polyacrylate 0.8%, polytetrafluoroethylene 1.5%. Wherein, the mass percent content of chromium element in the stainless steel material is 1.5%.

[0052] Wherein, the preparation method of heat insulation layer comprises the following steps:

[0053] Step A, preparation of heat insulation layer substrate: Combine foamed polyurethane, polyimide, glass wool, and high silic...

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