Preparation method of high-strength paper-based friction composite material

A paper-based friction and composite material technology, applied in the field of friction materials, can solve problems such as low paper strength, and achieve the effects of preventing flocculation and agglomeration, improving dispersibility, and strengthening steric hindrance

Inactive Publication Date: 2020-04-24
李可禛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention: Aiming at the problem of low paper strength of existing paper-based friction materials, a preparation method of high-strength paper-based friction composite materials is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In terms of parts by weight, weigh 20 parts of tetraethyl orthosilicate, 10 parts of ammonia water with a mass fraction of 25%, 20 parts of high-activity dry yeast, 160 parts of absolute ethanol, and 160 parts of deionized water. 1. Add absolute ethanol to deionized water, stir at 200r / min for 40min at normal temperature to obtain yeast liquid, add tetraethyl orthosilicate to the yeast liquid, stir at 240r / min for 20min at normal temperature to obtain silicon-containing yeast liquid, and Ammonia water was slowly added to the silicon-containing yeast liquid at a dropping rate of 20 mL / min, and stirred at a speed of 300 r / min at room temperature for 20 h to obtain a mixed liquid, which was filtered, and the filter residue was taken, washed three times with deionized water, and placed in a In a Furnace, calcined at 600°C for 1 hour to obtain hollow silica powder; then weigh 30 parts of hollow silica powder, 30 parts of formaldehyde, 60 parts of resorcinol, and 6 parts by we...

Embodiment 2

[0046]In terms of parts by weight, weigh 25 parts of tetraethyl orthosilicate, 12 parts of ammonia water with a mass fraction of 25%, 25 parts of high-activity dry yeast, 200 parts of absolute ethanol, and 200 parts of deionized water. 1. Add absolute ethanol to deionized water, stir at a speed of 220r / min for 50min at normal temperature to obtain a yeast liquid, add ethyl orthosilicate to the yeast liquid, and stir at a speed of 260r / min for 25min at normal temperature to obtain a yeast liquid containing silicon. Ammonia water was slowly added to the silicon-containing yeast liquid at a dropping rate of 25 mL / min, and stirred at a speed of 325 r / min at room temperature for 22 hours to obtain a mixed liquid, which was filtered, and the filter residue was taken, washed 4 times with deionized water, and placed in a In a Furnace, calcined at 700°C for 1 hour to obtain hollow silica powder; then weighed 35 parts of hollow silica powder, 35 parts of formaldehyde, 70 parts of resorci...

Embodiment 3

[0048] In terms of parts by weight, weigh 30 parts of ethyl orthosilicate, 15 parts of ammonia water with a mass fraction of 25%, 30 parts of high-activity dry yeast, 240 parts of absolute ethanol, and 240 parts of deionized water. 1. Add absolute ethanol to deionized water, stir at 240r / min for 60min at normal temperature to obtain yeast liquid, add tetraethyl orthosilicate to the yeast liquid, stir at 280r / min for 30min at normal temperature to obtain silicon-containing yeast liquid, and Ammonia water was slowly added to the silicon-containing yeast liquid at a dropping rate of 30mL / min, and stirred at a speed of 350r / min at room temperature for 24 hours to obtain a mixed solution, which was filtered, and the filter residue was taken, washed 5 times with deionized water, and placed in a In a Furnace, calcined at 800°C for 2 hours to obtain hollow silica powder; then weigh 40 parts of hollow silica powder, 40 parts of formaldehyde, 80 parts of resorcinol, and 8 parts by weight...

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Abstract

The invention relates to a preparation method of a high-strength paper-based friction composite material, which belongs to the technical field of friction materials. According to the invention, polypropylene fiber, bamboo fiber and aramid fiber are used as raw materials; carboxymethyl cellulose, polyvinyl alcohol and methyl triethyl silane are added; the high-strength paper-based friction composite material is prepared; the nano aluminum oxide, the silicon carbide microspheres and the talcum powder are added; the added nano aluminum oxide can be used as a hard point grinding material of the paper-based friction material; the friction factor and the wear resistance of the friction material can be effectively improved; the silicon carbide microspheres are added, the holes can enable the adhesive to be better bonded with the resin; the bonding strength of the paper-based friction material is improved, oil flowing can be promoted due to the holes, the friction material is more heat-resistant, the friction factor and the energy absorption rate of the friction material can be improved, the friction performance of the material can be adjusted by adding talcum powder, and the friction material has better comprehensive performance.

Description

technical field [0001] The invention relates to a preparation method of a high-strength paper-based friction composite material, which belongs to the technical field of friction materials. Background technique [0002] In more and more engineering applications, friction and wear has become a problem that cannot be ignored. Friction materials are the most important components in wet clutches and brakes of cars, various heavy vehicles, and engineering machinery. [0003] Paper-based friction materials are widely used in wet clutches and brakes of cars, various heavy vehicles and construction machinery. In developed countries, paper-based friction materials have been widely used. Compared with traditional metal-based and semi-metal-based friction materials, paper-based friction materials have a suitable friction coefficient, stable friction performance, Good wear resistance, adjustable dynamic and static friction coefficient ratio, high energy absorption capacity and a series...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L97/02C08L77/10C08L81/06C08L79/08C08L29/04C08L1/28C08K13/04C08K7/26C08K3/34C08K3/22C08K5/5419
CPCC08K2003/2227C08K2201/011C08L23/12C08L2201/08C08L2205/035C08L2205/16C08L97/02C08L77/10C08L81/06C08L79/08C08L29/04C08L1/286C08K13/04C08K7/26C08K3/34C08K3/22C08K5/5419
Inventor 李可禛
Owner 李可禛
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