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Copper-free carbon-based friction material

A friction material, copper-carbon technology, applied in other chemical processes, chemical instruments and methods, etc., can solve problems such as limited heat resistance, failure to meet the use requirements, and high brittleness of phenolic resin

Inactive Publication Date: 2012-07-18
信义集团公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the unmodified phenolic resin in the current friction materials has high brittleness, poor toughness, and limited heat resistance, which cannot meet the requirements of modern friction materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0004] Example 1. The components of the copper-free carbon-based friction material include an adhesive, a friction modifier, a reinforcing material, and a filler. The adhesive is a composite modified phenolic resin, and the weight percentage of the adhesive is 7%. The reinforcing material It is carbon fiber, aramid fiber, mineral fiber, glass fiber, the weight percentage of reinforcing material is 20%, the friction performance regulator is abrasive, including aluminum oxide, iron oxide, magnesium oxide, its weight percentage is 1%, the friction performance The regulator also includes graphite, molybdenum disulfide and mica, which is 5% by weight, and the filler is barium sulfate, potassium titanate, and vermiculite powder, which is 10% by weight. The copper-free carbon-based brake pad is prepared by following the following process steps: batching-mixing-cold molding-vulcanization-grinding-inspection.

Embodiment 2

[0005] Example 2. The components of the copper-free carbon-based friction material include an adhesive, a friction modifier, a reinforcing material, and a filler. The adhesive is a composite modified phenolic resin, and the weight percentage of the adhesive is 12%. The reinforcing material It is carbon fiber, aramid fiber, mineral fiber, glass fiber, the weight percentage of reinforcing material is 26%, the friction performance regulator is abrasive, including aluminum oxide, iron oxide, magnesium oxide, its weight percentage is 7%, the friction performance The regulator also includes graphite, molybdenum disulfide and mica, which is 10% by weight, and the filler is barium sulfate, potassium titanate, and vermiculite powder, which is 20% by weight. The copper-free carbon-based brake pad is prepared by following the following process steps: batching-mixing-cold molding-vulcanization-grinding-inspection.

[0006] Example 2. The components of the copper-free carbon-based friction...

Embodiment 3

[0007] Example 3. The components of the copper-free carbon-based friction material include an adhesive, a friction modifier, a reinforcing material, and a filler. The adhesive is a composite modified phenolic resin, and the weight percentage of the adhesive is 18%. The reinforcing material It is carbon fiber, aramid fiber, mineral fiber, glass fiber, the weight percentage of reinforcing material is 33%, the friction performance regulator is abrasive, including aluminum oxide, iron oxide, magnesium oxide, its weight percentage is 15%, the friction performance The regulator also includes graphite, molybdenum disulfide and mica, which is 15% by weight, and the filler is barium sulfate, potassium titanate, and vermiculite powder, which is 30% by weight. The copper-free carbon-based brake pad is prepared by following the following process steps: batching-mixing-cold molding-vulcanization-grinding-inspection.

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PUM

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Abstract

The invention relates to the technical field of preparation of friction materials in the automobile industry field and provides a material for improving heat resistance and recession-proofness of a friction material. A copper-free carbon-based friction material comprises the following components in percentage by weight: 7-18 percent of adhesive, 5-15 percent of friction performance modifier, 20-33 percent of reinforcing material and 10-30 percent of stuffing; the adhesive is compound modified phenolic resin; the reinforcing material is carbon fiber, aramid fiber, mineral fiber or glass fiber; the friction performance modifier is a grinding agent including aluminium oxide, ferric oxide and magnesium oxide; the friction performance modifier further comprises graphite, molybdenum disulfide and mica with weight percentage of 5-15%; and the stuffing comprises barium sulfate, potassium titanate and vermiculite powder. A brake pad produced by using the material disclosed by the invention has the advantages of no heat recession at high temperature, stable friction coefficient, small abrasion of products, comfortable braking in use and no noise.

Description

technical field [0001] The invention relates to the technical field of friction material preparation in the field of automobile industry, in particular to a copper-free carbon-based friction material. Background technique [0002] The friction material is bonded with various reinforcing fibers such as carbon fiber, potassium titanate lamellae and other components to form a friction material product with various properties required for friction braking. Carbon composites play a very important role in the performance of the entire material. With the development of high-speed and heavy-duty transportation machinery, higher requirements are put forward for high-performance friction materials, such as good decay resistance, thermal recovery, stable friction coefficient, small wear and low noise, etc. . However, the unmodified phenolic resin in current friction materials has high brittleness, poor toughness, and limited heat resistance, which cannot meet the requirements of mode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14
Inventor 杜东升田式国
Owner 信义集团公司
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