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Friction material of disc brake pad, disc brake pad and preparation technology of disc brake pad

A technology for disc brake pads and friction materials, applied in the field of disc brake pads, disc brake pad preparation technology, and disc brake pad friction materials, can solve the problems of unfavorable overall performance of brake pad friction materials, low impact strength, thermal Poor ablative properties and other problems to achieve the effect of avoiding performance defects, good braking performance, and eliminating poor heat ablation resistance

Active Publication Date: 2013-03-13
SHANDONG GOLD PHOENIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, ordinary phenolic resins have disadvantages such as poor thermal ablation, high wear and low impact strength, which are not conducive to improving the overall performance of brake pad friction materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0054] Prepare the following raw materials: cashew nut shell oil modified phenolic resin 15kg, nitrile rubber powder 16kg, steel wool fiber 6kg, calcium sulfate whisker 10kg, potassium feldspar powder 3kg, graphite 4kg, brown corundum 5kg, antimony sulfide 4kg, barite powder 12kg , chromite powder 8kg, ground calcium carbonate 10kg, zircon sand 3kg, and brass powder 4kg.

[0055] Weigh the raw materials of the disc brake pad friction material according to the above ratio, put them into the mixer and mix them evenly, then put them into the molding machine for hot pressing, wherein the system pressure is 10MPa, the back pressure is 8MPa, The time is 2 minutes; the upper mold of the molding machine is at 170°C, and the middle and lower molds are at 165°C. During the curing process, the sintered semi-finished product is firstly kept at 120°C for 5h, then at 150°C for 5h, and finally at 180°C for 5h, and then a disc brake pad with excellent decay performance is obtained. According...

specific Embodiment 2

[0056] Prepare the following raw materials: cashew nut shell oil modified phenolic resin 18kg, nitrile rubber powder 14kg, steel wool fiber 6kg, calcium sulfate whisker 7kg, potassium feldspar powder 4kg, graphite 6kg, brown corundum 4kg, antimony sulfide 4kg, barite powder 15kg , chromite powder 5kg, heavy calcium carbonate 10kg, zircon sand 3kg, and brass powder 4kg.

[0057] Weigh the raw materials of disc brake pad friction materials according to the above ratio, put them into the mixer and mix them evenly, and then put them into the molding machine for hot pressing. The system pressure is 13MPa, the back pressure is 10MPa, and the heat preservation The time is 3 minutes; the upper mold of the molding machine is at 150°C, and the middle and lower molds are at 145°C. During the curing treatment, heat preservation at 130°C for 6 hours, then heat preservation at 150°C for 3 hours, and finally heat preservation at 170°C for 5 hours, and then obtain a disc brake pad. At 150°C,...

specific Embodiment 3

[0058] Prepare the following raw materials: cashew nut shell oil modified phenolic resin 18kg, nitrile rubber powder 9kg, steel wool fiber 4kg, calcium sulfate whisker 9kg, potassium feldspar powder 4kg, graphite 6kg, brown corundum 6kg, antimony sulfide 3kg, barite powder 13kg , chromite powder 8kg, heavy calcium carbonate 11kg, zircon sand 4kg, and brass powder 3kg.

[0059] Weigh the raw materials of the disc brake pad friction material according to the above ratio, put them into the mixer and mix them evenly, then put them into the molding machine for hot pressing molding, wherein the system pressure is 10MPa, the back pressure is 8MPa, and the holding time is 4min ; The temperature of the upper mold of the molding machine is 140°C, and that of the middle and lower molds is 140°C. During the curing process, heat preservation at 120°C for 6 hours, then heat preservation at 150°C for 3 hours, and finally heat preservation at 180°C for 5 hours, and then obtain a disc brake pa...

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Abstract

The invention discloses a friction material of a disc brake pad. The friction material comprises the following raw materials in parts by weight: 13-18% of cashew nut shell oil-modified phenolic resin, 9-16% of butyronitrile rubber powder, 3-7% of steel wool fiber, 6-11% of calcium sulfate whisker, 2-5% of potassium feldspar powder, 3-6% of graphite, 2-6% of brown fused alumina, 3-5% of antimony sulfide, 11-16% of baryta powder, 5-9% of chromite powder, 6-11% of heavy calcium carbonate, 2-4% of zircon sand and 3-6% of brass powder. Visibly, in the preparation raw materials, the cashew nut shell oil-modified phenolic resin is adopted for replacing ordinary phenolic resin as an organic carrier of a brake pad material, so that the shortcomings of poor resistance to thermal ablation, high abrasiveness, low anti-impact strength and the like of the ordinary phenolic resin are eliminated, the performance defects of the friction material of the disc brake pad caused by the ordinary phenolic resin can be avoided, and the overall performance of the friction material of the disc brake pad can be further improved.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a disc brake pad friction material, a disc brake pad, and a preparation process for the disc brake pad. Background technique [0002] Along with the quickening of modern life rhythm and the raising of living standard, family car has become more and more common, and along with the popularity of automobiles such as long-distance automobile travel, people also more and more value the braking effect of automobile. The safety of the car under various road conditions directly tests the braking performance of the car, which requires the brake pads of the car to ensure stable performance under high-speed and high-temperature braking conditions. Therefore, how to ensure the stable performance of the brake pads has become a research focus. The direct influencing factor of the decline performance is the ratio and pressing process of various raw materials for producing brake pad friction materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14F16D69/02C08L61/14C08L9/02C08K13/04C08K7/08C08K3/04C08K3/26
Inventor 孙鹏缪庆史玉香
Owner SHANDONG GOLD PHOENIX
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