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Novel composite wear-resistant material, and preparation method and application thereof

A wear-resistant material and a new type of technology, applied in chemical instruments and methods, mechanical equipment, other chemical processes, etc., can solve the problems of uneven distribution of brake pad material composition and structure, difficult for adhesives to flow fully, and difficult to strengthen fibers. , to achieve the effects of excellent macroscopic comprehensive performance, improved service life, and stable friction and wear performance.

Inactive Publication Date: 2014-07-23
CHINA THREE GORGES UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These properties interact and restrict each other, and it is difficult to coordinate and balance the traditional hot molding / rolling forming process. The main reason is that the internal material composition and structure of the brake pad are unevenly distributed, especially the reinforcing fiber is difficult to mix evenly with the powder. In addition, When hot molding or rolling molding is used, the brake pads have an overall block structure, which requires a long drying time, high hot mold pressure, difficulty in fully flowing the adhesive, and many product defects.

Method used

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  • Novel composite wear-resistant material, and preparation method and application thereof
  • Novel composite wear-resistant material, and preparation method and application thereof
  • Novel composite wear-resistant material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] A composite wear-resistant material, its material composition and mass parts are:

[0047] The material composition and mass fraction of the adhesive layer unit layer are:

[0048] Mixed powder: 22.5 parts of NBR powder, 7.5 parts of tire powder, 0.75 part of accelerator DM powder, 1 part of zinc oxide powder, 0.75 part of N-phenyl-β-naphthylamine powder, and 1.5 parts of sulfur powder.

[0049] Liquid reagents: 12.5 parts of liquid phenolic resin, 1.5 parts of silane coupling agent KH-550, 1.5 parts of dibutyl phthalate (DBP), 0.5 parts of melamine, and 50 parts of absolute ethanol.

[0050] The material composition and mass fraction of the reinforcement layer unit layer are:

[0051] Mixed powder: 10 parts of nitrile rubber powder, 10 parts of barium sulfate powder, 5 parts of calcium carbonate powder, 0.5 part of accelerator DM powder, 0.5 part of zinc oxide powder, 0.5 part of N-phenyl-β-naphthylamine powder, sulfur 1 serving of powder.

[0052] Liquid reagents: 9 ...

Embodiment 2

[0079] A composite wear-resistant material, the material composition and mass parts are:

[0080] The material composition and mass fraction of the friction and wear layer unit layer are:

[0081] Mixed powder: 10 parts of nitrile rubber powder, 2.5 parts of silicon dioxide powder, 2.5 parts of alumina powder, 7 parts of artificial graphite powder, 3 parts of antimony sulfide powder, 4 parts of barium sulfate powder, 4 parts of calcium carbonate powder, coal ash 1 part of powder, 1 part of coke powder, 0.25 part of accelerator DM powder, 0.5 part of zinc oxide powder, 0.25 part of N-phenyl-β-naphthylamine powder, and 1 part of sulfur powder.

[0082] Liquid reagent: 10 parts of liquid phenolic resin, 2 parts of silane coupling agent KH-5502, 0.5 part of dibutyl phthalate (DBP), 0.5 part of melamine, and 50 parts of absolute ethanol.

[0083] The material composition and mass fraction of the reinforcement layer unit layer are:

[0084] Mixed powder: 10 parts of nitrile rubber...

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Abstract

The invention discloses a composite wear-resistant material and a preparation method thereof. The composite wear-resistant material is formed by coating a plurality of layers, namely an adhesive layer, a reinforcing layer and a friction and wear layer in sequence from inside to outside, and curing and molding under vacuum hot-pressing conditions, wherein the adhesive layer, the reinforcing layer or the friction and wear layer consists of a plurality of unit layers of the adhesive layer, unit layers of the reinforcing layer or unit layers of the friction and wear layer with the thickness of 0.10 to 0.50 mm; the material components and the mass fraction of the adhesive layer, the reinforcing layer and the friction and wear layer can be accurately controlled; the preparation process of each unit layer comprises the process links of paving powder, spraying glue, drying and the like; fiber mesh prefabricated pieces are required to be paved when the unit layers of the reinforcing layer is prepared. The novel composite wear-resistant material disclosed by the invention is applied to a bicycle brake pad, and has stable friction and wear performance, high mechanical properties and high adhesive force, so that the comprehensive performance of the overall brake pad is guaranteed.

Description

technical field [0001] The invention relates to a novel composite wear-resistant material, which is applied to brake pads of electric bicycles and high-grade bicycles, and belongs to the technical field of friction materials for mechanical braking. Background technique [0002] With the continuous improvement of people's awareness of environmental protection, electric bicycles have become a popular means of transportation. Brake pads are an important part of the braking system of electric bicycles, and their performance is directly related to personal safety. For an electric bicycle with a maximum speed of 20km / h, the brake pad material should have a stable friction coefficient (0.25-0.60), good wear resistance (0-1.00×10 -7 cm 3 (Nm) -1 ), sufficient mechanical properties (the shear strength at room temperature should not be less than 3MPa, and the bonded area should not be less than 80%), low noise, safety and environmental protection, etc. These properties interact and...

Claims

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Application Information

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IPC IPC(8): B32B25/02B32B25/18B32B7/10B32B37/14B32B37/10C09K3/14F16D69/02
Inventor 吴海华刘富林陈如山吴刚杜超
Owner CHINA THREE GORGES UNIV
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