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Carbon fiber reinforced friction material and its prepn

A friction material and carbon fiber technology, which is applied in the field of carbon fiber reinforced friction material and its preparation, can solve the problems of high brittleness, poor heat resistance, high hardness, etc., and achieve good braking performance and low heat resistance.

Inactive Publication Date: 2004-01-21
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent No. is CN1142024's "Carbon Fiber Reinforced Automobile Disc Brake Lining and Its Preparation" disclosed in the Chinese patent, adopting a weight ratio of carbon fiber (5-15%) / glass fiber (15-20%) / steel fiber (0- 5%) The disc brake lining prepared by the composite fiber hybrid system overcomes the thermal fading phenomenon produced by the product at 300 ° C, but it uses the traditional high temperature resistant flame retardant resin as the adhesive, and the manufactured product has a relatively large brittleness, The defect of high hardness; another Chinese patent with the patent number CN1209381 discloses "Rubber Multi-component Synthetic Brake Shoe and Its Manufacturing Method", which uses a synthetic brake shoe made of metal microfibers and carbon fibers, and uses rubber as an adhesive system , its heat resistance is slightly worse, and the molding process is more cumbersome

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: 30 kilograms of water-emulsion modified phenolic aldehydes are used as matrix resin, mixed with the reinforcement fiber that is made up of 12 kilograms of carbon fibers, 13 kilograms of metal steel fibers, and 15 kilograms of sepiolite fibers; add friction performance regulator (sulfuric acid) afterwards 8 kilograms of barium, 6 kilograms of ferric oxide, 4 kilograms of ferric chloride, 12 kilograms of silicon dioxide), and mix well; then put into the loosening machine to loosen the molded material;

[0017] The preheating process adopts hot air drying. The molding material is first opened, and then the low-molecular volatile components are removed. The drying temperature is 100±5°C, and the pre-baking time is 30 minutes. The molding temperature is controlled at 180°C, the molding pressure is controlled at 35 MPa, and the molding time is 2.5 minutes / mm; finally, the workpiece is placed in an oven or vulcanization furnace for post-curing or vulcanization to ...

Embodiment 2

[0019] Embodiment 2: get 30 kilograms of water-emulsion modified phenolic aldehydes as matrix resin, mix with the reinforcement fiber that is made up of 12 kilograms of carbon fibers, 15 kilograms of metal steel fibers, 15 kilograms of sepiolite fibers, then add frictional performance modifier (sulfuric acid 9 kilograms of barium, 9 kilograms of ferric oxide, 3 kilograms of ferric chloride, 7 kilograms of silicon dioxide), and mix well, then put into the loosening machine to loosen the molding material;

[0020] The preheating process is dried with hot air. The molding material is first opened, and then the low molecular volatiles are removed. The drying temperature is 100±5°C, and the pre-drying time is 40 minutes; the molding temperature is controlled at 175°C. The pressure is controlled at 30 MPa, and the molding time is 2.5 minutes / mm; finally, the workpiece is put into an oven or vulcanization furnace for post-curing or vulcanization to eliminate thermal stress. The post-b...

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Abstract

The present invention relates to new material, and is one kind of carbon fiber reinforced friction resistance material suitable for producing automobile and train brake disc and its preparation process. The carbon fiber reinforced friction resistance material is produced with reinforcing fiber, base resin and friction performance regulator, the reinforcing fiber is the mixture of carbon fiber, metal fiber and inorganic mineral fiber; the base resin is water latex modified phenolic resin; and the friction performance regulator consists of at least two of barium sulfate, ionic oxide, triiron tetrachloride, iron trichloride, magnesia and silica. The preparation process includes the steps of mixing material, pre-stoving, pressing and post-treatment. The carbon fiber reinforced friction resistance material has excellent friction resistance performance and the preparation process has no pollution.

Description

technical field [0001] The invention belongs to the field of new materials, in particular to a carbon fiber reinforced friction material suitable for making automobile and train brake pads and a preparation method thereof. Background technique [0002] Brake pads are key components related to vehicle braking safety and stability. In the early 1980s, semi-metallic brake pads were adopted on a large scale. Semi-metallic brake pad materials can adjust the friction performance, thermal performance and mechanical performance of the material within a certain range by changing the formula and process. However, semi-metallic brake pads have fatal "three-heat" defects such as thermal decay, thermal expansion, and thermal cracks during the braking process. Braking at high speeds will generate heavy sparks, and the braking noise is loud. Therefore, metal-less brake pads have been gradually used at home and abroad, and the application of carbon fiber brake pads in heavy-duty, high-spe...

Claims

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Application Information

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IPC IPC(8): C08J5/14C08K7/04C08L61/04
Inventor 王成国王海庆庄光山孙毅
Owner SHANDONG UNIV
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