Modified corn straw composite fiber reinforced friction material and its preparation method

A technology of corn stalk fiber and composite fiber, which is applied in the fields of plant fiber, fiber treatment, chemical instruments and methods, etc., can solve problems such as unsatisfactory, and achieve the effects of improving modification efficiency, ensuring uniformity, and reducing production costs

Active Publication Date: 2018-03-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation and optimization of friction materials simply from the composition or process design of friction materials can no longer meet the requirements of modern friction materials.

Method used

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  • Modified corn straw composite fiber reinforced friction material and its preparation method
  • Modified corn straw composite fiber reinforced friction material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1. The content of the two components of the modified corn stalk composite fiber reinforced friction material by mass percentage is: 8% of the composite fiber interwoven structure layer material, and 92% of the filler layer material; wherein the content of each component of the filler layer material by mass percentage is : 38% phenolic resin, 5% aramid fiber particles, 4% flake graphite, 5% antimony trisulfide, 3% zeolite, 26% barium sulfate, 3% foam iron powder, 7% wollastonite, 2 red vermiculite %, petroleum coke 7%.

[0052] 2. The composite fiber interweaving structure layer material is prepared through the following steps:

[0053] (1) ① Soak the corn stalk fiber in the mixed solution of ethanol and sodium hexametaphosphate (the mass ratio of the fiber to the mixed solution is 1:22), and the content of each component by mass percentage is: absolute ethanol 30%, six 15% sodium metaphosphate, 55% distilled water, the treatment time is 15 minutes; then wash with disti...

Embodiment 2

[0065] 1. The content of the two components of the modified corn stalk composite fiber reinforced friction material by mass percentage is: 23% of the composite fiber interwoven structure layer material, and 77% of the filler layer material; wherein the content of each component of the filler layer material by mass percentage is : phenolic resin 10%, aramid particles 9%, flake graphite 7%, antimony trisulfide 12%, zeolite 9%, barium sulfate 11%, foam iron powder 11%, wollastonite 15%, red vermiculite 5 %, petroleum coke 11%.

[0066] 2. The composite fiber interweaving structure layer material is prepared through the following steps:

[0067] (1) ① Soak the corn stalk fiber in the mixed solution of ethanol and sodium hexametaphosphate (the mass ratio of the fiber to the mixed solution is 1:24), and the content of each component by mass percentage is: absolute ethanol 45%, six Sodium metaphosphate 10%, distilled water 45%, the treatment time is 20min; then wash with distilled w...

Embodiment 3

[0079] 1. The content of the two components of the modified corn stalk composite fiber reinforced friction material by mass percentage is: 16% of the composite fiber interwoven structure layer material, and 84% of the filler layer material; wherein the content of each component of the filler layer material by mass percentage is : 13% phenolic resin, 6% aramid fiber particles, 19% flake graphite, 7% antimony trisulfide, 5% zeolite, 13% barium sulfate, 17% foam iron powder, 9% wollastonite, 3 red vermiculite %, petroleum coke 8%.

[0080] 2. The composite fiber interweaving structure layer material is prepared through the following steps:

[0081] (1) ① Soak the corn stalk fiber in the mixed solution of ethanol and sodium hexametaphosphate (the mass ratio of the fiber to the mixed solution is 1:23), and the content of each component according to the mass percentage is: absolute ethanol 38%, six Sodium metaphosphate 13%, distilled water 49%, the treatment time is 18min; then was...

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Abstract

The invention discloses a modified corn straw composite fiber reinforced friction material and its preparation method, and belongs to the technical field of a brake friction material. The brake friction material is composed of a composite fiber interweaving structure layer and a filler layer, wherein the composite fiber interweaving structure la is formed by interweaving, aligning and combining the modified corn straw fiber and the mixed fiber; the mixed fiber is composed of modified aramid fiber and modified polybenzoxazole fiber; by comprehensively using the advantageous performance of everyfiber, the thermal stability and wear resistance of the friction material are enhanced while the production cost is reduced; by adopting the alternative alignment method of the composite fiber interweaving structure layer and the filler layer, the uniformity of the fiber dispersion, the combination property with base material, and the effectiveness of using as a friction material enhancer are guaranteed. The invention provides a friction material featured by low friction factor, low wear rate, good thermal recession resistance, strong shearing resistance, small brake noise, strong environmentprotection property, low cost, high comprehensive performance cost, and others.

Description

technical field [0001] The invention belongs to the technical field of brake friction materials, and in particular relates to a modified corn stalk composite fiber reinforced friction material and a preparation method thereof. Background technique [0002] Friction material is a key part of the braking or transmission device in transportation vehicles, and its performance will directly affect the driving safety, stability and comfort of the vehicle. Friction materials are usually composed of binders, reinforcing fibers, friction modifiers, fillers and other materials, and must meet the requirements of stable friction coefficient, low wear rate, low noise, and high environmental protection. Asbestos is usually the main fiber used in traditional friction materials, and its use is prohibited because of its high thermal degradation and strong carcinogens. At present, metal fibers, organic fibers, inorganic fibers and plant fibers are gradually used in friction materials instead...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14C08J5/14B32B9/02B32B9/04B32B27/42D06M10/06D06M10/08D06M101/06
CPCC09K3/14D06M10/06D06M10/08C08J5/00B32B5/02B32B5/08B32B27/12B32B27/42D06M2101/06B32B2262/06B32B2262/14
Inventor 马云海吴思阳佟金庄健刘玉成王慧鑫齐红岩禹江涛陈创发
Owner JILIN UNIV
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