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Friction material and production method thereof

A technology of friction materials and abrasives, which is applied in the field of friction materials for medium/heavy-duty automobile drum brakes, can solve problems such as heat decay, wear resistance reduction, and low service life of friction materials, and achieve excellent friction, low product cost, and high manufacturing efficiency. good dynamic effect

Inactive Publication Date: 2013-03-20
SHIYAN JIUPENG FRICTION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the brake friction materials of motor vehicles and mechanical brake control are mainly resin-based friction materials, but the resin matrix of the material will undergo thermal decomposition when the temperature exceeds 250 ° C, resulting in thermal decay, reduced wear resistance, and the friction material. low service life

Method used

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  • Friction material and production method thereof

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Embodiment 1

[0016] Embodiment 1, embodiment 2, embodiment 3 and embodiment 4 are the production method of abrasive in the present invention. Embodiment 5, Embodiment 6 and Embodiment 7 are a production method of a friction material of the present invention.

[0017] Embodiment 1: increase the production of abrasive, specifically as follows:

[0018] a. Prepare materials by weight percentage: 5-15% NBR, 0.2-1% Accelerator M, 0.2-1% Sulfur, 2-10% Zinc Oxide, 10-20% Light Calcium Carbonate , 3-15% lead-zinc ore powder, 5-20% calcined petroleum coke, 5-30% barite powder, 5-40% graphite, 3-10% glass fiber;

[0019] b. Refining with a closed rubber mixer: first put in NBR, then put in accelerator M, sulfur, zinc oxide, light calcium carbonate, lead-zinc ore powder, calcined petroleum coke, barite powder, graphite phosphide, Glass fiber mixing and discharging.

Embodiment 2

[0020] Embodiment 2: increase the production of abrasive, specifically as follows:

[0021] a. Prepare materials by weight percentage: 9% nitrile rubber, 0.3% accelerator M, 0.5% sulfur, 2.5% zinc oxide, 13% light calcium carbonate, 8% lead-zinc mineral powder, 13 % calcined petroleum coke, 17% barite powder, 33% graphite, 3.7% glass fiber;

[0022] b. Refining with a closed rubber mixer: first put in NBR, then put in accelerator M, sulfur, zinc oxide, light calcium carbonate, lead-zinc ore powder, calcined petroleum coke, barite powder, graphite phosphide, Glass fiber mixing and discharging.

Embodiment 3

[0023] Embodiment 3: increase the production of abrasive, specifically as follows:

[0024] a. Prepare materials by weight percentage: 10% nitrile rubber, 0.5% accelerator M, 0.6% sulfur, 5% zinc oxide, 15% light calcium carbonate, 6% lead-zinc ore powder, 15% % calcined petroleum coke, 15% barite powder, 30% graphite, 2.9% glass fiber;

[0025] b. Refining with a closed rubber mixer: first put in NBR, then put in accelerator M, sulfur, zinc oxide, light calcium carbonate, lead-zinc ore powder, calcined petroleum coke, barite powder, graphite phosphide, Glass fiber mixing and discharging.

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Abstract

To improve wear resistance of friction materials and guarantee thermal decay stability of the friction materials, the invention provides a friction material and a production method thereof. Technical key points of the method comprises: (1) mixing, which comprises a first step of preparing materials consisting of 8 to 18 wt% of a phenolic resin, 1 to 10 wt% of vermiculite powder, 3 to 10 wt% of cryolite, 1 to 10 wt% of anglesite, 10 to 25 wt% of composite fibers, 3 to 10 wt% of cellulosic fiber, 1 to 5 wt% of brown aluminum oxide, 1 to 10 wt% of alumina, 3 to 15 wt% of light calcium carbonate , 1 to 5 wt% of zinc stearate, 2 to 25 wt% of barite powder, 1 to 5 wt% of carbon black, 3 to 15 wt% of cashew nut shell oil friction powder, 3 to 15 wt% of glass fibers and 10 to 30 wt% of a friction increasing material and a second step of adding the above-mentioned materials into a blender mixer and uniformly stirring the materials to obtain a mixture; (2) hot press molding, which is a step of subjecting the mixture to hot press molding at a temperature of 150 to 155 DEG C under a pressure of 250 kg / cm<2> by using a die; and (3) sulfuration, which is carried out on a product obtained after hot press molding so as to obtain the friction material, wherein sulfuration temperature is 150 to 155 DEG C and sulfuration time is 4 to 6 h.

Description

technical field [0001] The invention relates to a brake friction material for motor vehicle and mechanical brake control, especially a medium / heavy vehicle drum brake friction material and a production method thereof. Background technique [0002] At present, the brake friction materials of motor vehicles and mechanical brake control are mainly resin-based friction materials, but the resin matrix of the material will undergo thermal decomposition when the temperature exceeds 250 ° C, resulting in thermal decay, reduced wear resistance, and the friction material. Low service life. Contents of the invention [0003] In order to improve the wear resistance of the friction material and ensure the thermal decay stability of the friction material, the invention provides a friction material and a production method thereof. [0004] The technical scheme of the present invention is: a kind of friction material, the components are: 8-18% phenolic resin, 1-10% vermiculite powder, 3-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08L9/02C08L1/02C08K13/04C08K3/34C08K3/16C08K3/22C08K3/26C08K5/098C08K3/30C08K3/04C08K7/14C08K3/06C08J5/14
Inventor 田天喜王德胜
Owner SHIYAN JIUPENG FRICTION MATERIAL
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