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Paper based friction material with carbon fibers enhanced and its preparation method

A paper-based friction material and carbon fiber technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of inappropriateness, inability to disperse and recycle scraps of friction material base paper, and achieve the effect of reducing production costs

Inactive Publication Date: 2007-02-21
陕西航沣新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, before the base paper of this kind of paper-based friction material is impregnated with adhesive, its strength is too low, and the punching operation is easily deformed; after the impregnated resin binder is cured, the scraps of the base paper of friction material that are punched out cannot be dispersed in water and cannot be reused
[0003] Chinese patent 99114959.9 discloses a paper-based friction material with bamboo fiber or / and wood fiber as the substrate and its manufacturing method. This process is obviously not suitable for high-performance fibers such as carbon fibers

Method used

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  • Paper based friction material with carbon fibers enhanced and its preparation method
  • Paper based friction material with carbon fibers enhanced and its preparation method

Examples

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Embodiment 1

[0017] Example 1: A carbon fiber reinforced paper-based friction material, containing carbon fiber, Kevlar fiber, barite, kaolin, molybdenum disulfide, alumina, graphite powder, phenolic resin and cashew nut shell liquid modified phenolic resin, its mass percentage group Ingredients: carbon fiber 5-35%, Kevlar fiber 2-15%, barite 3-20%, kaolin 7-15%, molybdenum disulfide 1-10%, aluminum oxide 2-15%, graphite powder 2- 25%, phenolic resin 2-15%, cashew nut shell liquid modified phenolic resin 25-55%.

[0018] The reinforcing fiber is any one or more of carbon fiber or carbon fiber and Kevlar fiber, glass fiber, polyacrylonitrile fiber, ceramic fiber, phenolic resin fiber, and carbon fiber pre-oxidized wire.

[0019] The friction modifier can be any one or more of molybdenum disulfide, aluminum oxide and graphite powder.

[0020] The filler can be any one or several of barite and kaolin.

[0021] The adhesive is cashew nut shell liquid modified phenolic resin, or any one or mo...

Embodiment 2

[0027] Embodiment 2: A carbon fiber reinforced paper-based friction material, containing the friction material scraps, carbon fiber, Kevlar fiber, barium sulfate, kaolin, molybdenum disulfide, alumina, graphite powder, phenolic resin and modified phenolic resin in Example 1, Its mass percentage is composed of: scrap 15-60%, carbon fiber 2-20%, Kevlar fiber 1-8%, barite 1-10%, kaolin 3-8%, molybdenum disulfide 0.5-5%, Aluminum 1-7%, graphite powder 1-15%, phenolic resin 1-12%, cashew nut shell liquid modified phenolic resin 25-55%.

[0028] The preparation method is the same as in Example 1.

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Abstract

A carbon fibre reinforced paper-base friction material is prepared from reinforcing fibres (7-40 mass%), friction performance regulator (5-35 mass%), filler (11-35 mass%) raw paper reinforcing agnt (2-15 mass%), and adhesive (25-55 mass%) through adding them to water, beating, shaping, baking mechanical punching, immersing in adhesive, hot pressing, solidifying and machining to obtain friction disk. Its advantage is high utilization rate of raw materials.

Description

technical field [0001] The invention relates to a preparation method of a carbon fiber reinforced paper-based friction material, in particular to a preparation method of a carbon fiber reinforced paper-based friction material used in an automatic transmission. Background technique [0002] Paper-based friction material is a wet friction material produced by papermaking technology. It is the basic material for preparing friction plates and is widely used in automatic transmissions and wet brakes to transmit torque, decelerate and brake. U.S. Patent [Kitahara Shun, Umezawa, Shigeki.Wet friction material USP 6,130,177] introduces the method of using a mixed fiber of carbon fiber and aramid fiber to prepare a single-layer paper-based friction material, document [Andrew Kears, Dagobert Wagner.Carbon fiber for wet friction applications .SAE Paper 972754] and U.S. Patent [Yesnik, M.A..USP 6,194,059] introduced a method for preparing double-layer paper-based friction materials using...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/14C09K3/14
Inventor 李贺军付业伟李克智张秀莲
Owner 陕西航沣新材料有限公司
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