Method for preparing high-wear resistance paper-based friction material

A paper-based friction material, high wear resistance technology, applied in paper coatings, papermaking, textiles and papermaking, etc., can solve the problems of reduced friction stability, poor mechanical properties and wear resistance of paper-based friction materials, etc. The degree of structural compactness, the improvement of mechanical properties, and the effect of improving the densification performance

Active Publication Date: 2018-12-18
深圳市永霖科技有限公司
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Problems solved by technology

[0006] The technical problem to be solved by the present invention: Aiming at the defect that the current paper-based friction material has poor mechanical properties and wear resistance, which reduces the friction stability of the paper-based friction material, a method for preparing a high-wear-resistant paper-based friction material is provided

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  • Method for preparing high-wear resistance paper-based friction material

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[0022] In terms of parts by weight, weigh 3 to 5 parts of bamboo fiber, 20 to 25 parts of propylene glycol, 0.5 to 0.8 parts of citric acid particles, and 7 to 8 parts of ferrous sulfate solution with a mass fraction of 5 to 8% and put them into a beaker. Mix and stir with the agitator at a speed of 300-350r / min for 3-4 hours. After the stirring is completed, filter to obtain a filter cake, wash the filter cake with distilled water for 3-5 times, and then put it in an oven to dry for 100-120 minutes to obtain a dry product; Immerse the product in a conical flask with distilled water, add dropwise a copper sulfate solution with a mass fraction of 30 to 40% of the dry product and a mass fraction of 10 to 15% into the conical flask, place the conical flask in an ultrasonic oscillator, and Oscillate for 3 to 4 hours at a frequency of 40 to 45 kHz. After the oscillation is over, filter the filter residue and wash the filter residue 3 to 5 times with distilled water; Put the mass ra...

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Abstract

The invention relates to a method for preparing a high-wear resistance paper-based friction material, and belongs to the technical field of preparation of paper-based friction materials. The preparation method comprises the following steps: mixing bamboo fibers with a ferrous sulfate solution, filtering and drying the obtained fibers to obtain a dried product, reacting the dried product with a copper sulfate solution to obtain filter residues, mixing the filter residues with ethyl orthosilicate, and carrying out microwave heating to obtain modified bamboo fibers. The bamboo fibers are mixed with ferrous ions, the excellent mechanical properties of elemental metals make the mechanical properties of the modified bamboo fibers improved; pores in the bamboo fibers are filled to the compactnessand improve the tightness of the microstructure of the bamboo fibers, so the toughness and the mechanical properties of the bamboo fibers are further improved; and a silicon dioxide film is formed onthe surface of the bamboo fibers to protect iron and copper elements, and the film contains S-O bonds with large bond energy, so the strength of the paper-based friction material is improved, and thematerial has a broad application prospect.

Description

technical field [0001] The invention relates to a preparation method of a high wear resistance paper-based friction material, belonging to the technical field of paper-based friction material preparation. Background technique [0002] In recent years, with the rapid development of the automobile industry and the aviation industry, the research in the field of friction materials has also undergone rapid growth. Friction materials use friction to transmit torque and brake during the working process, and are important materials to ensure the smooth operation and safety performance of automobiles. For a long time in the past, the friction materials most commonly used in industry were mainly traditional friction materials such as metals, ceramics and cement substances. However, as the industry's requirements for the comprehensive performance of friction materials are gradually increasing, its own performance deficiencies (such as high-temperature thermal decomposition of semi-me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/12D21H11/20D21H17/67D21H19/24
CPCD21H11/12D21H11/20D21H17/67D21H17/675D21H19/24
Inventor 刘菊花蒋东明赵金晶
Owner 深圳市永霖科技有限公司
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