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2.5-dimensional carbon fiber/aramid fiber woven perform reinforced cashew nut shell oil modified phenolic resin-based friction material

A kind of aramid fiber, friction material technology, applied in the direction of friction lining, mechanical equipment, gear transmission mechanism, etc., can solve the problems of poor structural integrity of friction material, difficult to bear large torsional moment, easy to delaminate and damage, etc. Insulation and anti-aging properties, improved impact resistance, less cracking and peeling effect

Inactive Publication Date: 2016-06-22
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the two-dimensional carbon cloth reinforced friction material has the disadvantages of low thickness, difficulty in bearing large torsional moment, and easy failure under severe working conditions such as high speed and high pressure, so it is only used in medium and low energy load conditions.
With the development of high-speed and heavy-duty vehicles, higher requirements are put forward for the safety and stability of the transmission system. How to overcome the defects of poor structural integrity, easy delamination and low strength of friction materials has become the key to solving the problem.

Method used

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  • 2.5-dimensional carbon fiber/aramid fiber woven perform reinforced cashew nut shell oil modified phenolic resin-based friction material

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Effect test

Embodiment 1

[0025] A 2.5-dimensional carbon fiber / aramid fiber woven preform reinforced modified cashew nut shell oil phenolic resin-based friction material, the preparation method of the friction material comprises the following steps:

[0026] (1) Preparation of 2.5-dimensional carbon fiber / aramid fiber woven preform:

[0027] First, the carbon fiber and the aramid fiber are parallel twisted to make a ply yarn, which is used as a weft yarn (80 pieces / 10cm), and the carbon fiber is used as a warp yarn (80 pieces / 10cm); Each layer is a carbon fiber woven prefabricated body (thickness 2mm) woven into a deep cross-linked structure; the volume content of carbon fiber is 20%, and the volume content of aramid fiber is 35%; the number of weft yarn layers is 2 layers; carbon fiber / aramid fiber prefabrication The bulk density is 1.4 / cm 3 .

[0028] Both the carbon fiber and the aramid fiber are 800tex; the carbon fiber is a pre-oxidized polyacrylonitrile-based carbon fiber.

[0029] (2) Prepar...

Embodiment 2

[0035] A 2.5-dimensional carbon fiber / aramid fiber woven preform reinforced modified cashew nut shell oil phenolic resin-based friction material, the preparation method of the friction material comprises the following steps:

[0036] (1) Preparation of 2.5-dimensional carbon fiber / aramid fiber woven preform:

[0037] First, the carbon fiber and the aramid fiber are parallel twisted to make a ply yarn, which is used as a weft yarn (144 pieces / 10cm), and the carbon fiber is used as a warp yarn (20 pieces / 10cm); Each layer is a carbon fiber woven prefabricated body (thickness 4mm) woven into a deep cross-linked structure; the volume content of carbon fiber is 20%, and the volume content of aramid fiber is 55%; the number of weft yarn layers is 4 layers; carbon fiber / aramid fiber prefabrication The bulk density is 1.6g / cm 3 .

[0038] The carbon fiber has been pretreated before use, and the pretreatment method is: use nitric acid solution to carry out liquid phase oxidation surf...

Embodiment 3

[0045] A 2.5-dimensional carbon fiber / aramid fiber woven preform reinforced modified cashew nut shell oil phenolic resin-based friction material, the preparation method of the friction material comprises the following steps:

[0046] (1) Preparation of 2.5-dimensional carbon fiber / aramid fiber woven preform:

[0047] First, the carbon fiber and the aramid fiber are twisted to make a ply yarn, which is used as a weft yarn (200 pieces / 10cm), and the carbon fiber is used as a warp yarn (20 pieces / 10cm); Each layer is a carbon fiber woven prefabricated body (thickness 12mm) woven into a deep cross-linked structure; the volume content of carbon fiber is 20%, and the volume content of aramid fiber is 75%; the number of weft yarn layers is 6 layers; carbon fiber / aramid fiber prefabrication The bulk density is 2.5g / cm 3 .

[0048] The carbon fiber has been pretreated before use, and the pretreatment method is: use nitric acid solution to carry out liquid phase oxidation surface trea...

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Abstract

The invention discloses a 2.5-dimensional carbon fiber / aramid fiber woven perform reinforced cashew nut shell oil modified phenolic resin-based friction material. According to the friction material, a 2.5-dimensional carbon fiber / aramid fiber woven perform formed by weaving carbon fibers and aramid fibers in a mixed mode is adopted as a reinforcing structure and is subjected to composite solidification with a cashew nut shell oil modified phenolic resin glue solution to obtain the friction material. The friction material can be completely used under extreme operating conditions such as heavy loads and high speeds. The friction material has high mechanical performance and can bear large impact force, resist abrasion at high speeds, transfer heat in the friction material out in time and protect a brake disc well, and the service life of a brake pad is prolonged due to abrasion resistance.

Description

technical field [0001] The invention relates to the technical field of material processing, in particular to a method for preparing a modified cashew nut shell oil phenolic resin friction material reinforced with 2.5-dimensional carbon fiber / aramid fiber Background technique [0002] With the development of science and technology and industrial production, carbon fiber reinforced phenolic resin-based friction materials have been widely used in automobiles, aerospace and other fields. The current carbon fiber-reinforced friction materials mostly adopt chopped fiber hot-pressing molding process, which has serious defects such as easy delamination, random structure and low designability, which have become important problems restricting the development of carbon fiber friction materials. In addition, in recent years, a large number of studies on carbon fiber phenolic resin-based friction materials with two-dimensional carbon cloth prefabricated structures have shown that the per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C09K3/14
CPCF16D69/023C09K3/14F16D2200/006
Inventor 卢雪峰龙祥钱坤俞科静孙洁肖学良
Owner JIANGNAN UNIV
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