Double-adhesive friction material

A technology of friction materials and adhesives, which is applied in the field of friction materials and double-adhesive friction materials, can solve the problems of insufficient heat resistance and achieve the effects of improving heat resistance, resisting the influence of frictional heat, and improving brittleness

Inactive Publication Date: 2011-06-15
XIANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of insufficient heat resistance of existing resin-based friction materials, the present invention provides a double-adhesive friction material containing at least one inorganic binder and at least one organic binder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: A kind of double-adhesive friction material, its component mass percentage is: ultra-high-strength cement 50%, cashew nut shell oil modified phenolic resin 8%, carbon fiber 8%, ceramic fiber 10%, chromite 4% powder, 4% graphite, 2% mica powder, and the remaining ingredients are barium sulfate and kaolin mixed in equal amounts; after mixing the above materials evenly in a dry mixer, add them to the prefabricated cold-press mold for compression molding After taking it out, put it into a heat curing mold and heat press it at 160°C and 10MPa pressure for curing. The curing time is 3 minutes per mm of sheet thickness. Finally, it is cured for 48 hours under the condition of water absorption, and cured for 7 hours under the condition of relative humidity of 90%. - 10 days, the friction material has the friction torque characteristic of resin-based friction material, the coefficient of dynamic friction is ≥ 0.35, and the temperature at which the weight loss is 10%...

Embodiment 2

[0019] Embodiment 2: a kind of double adhesive friction material, its component mass percentage is: high alumina cement 50%, nitrile rubber modified phenolic resin 5%, melamine modified phenolic resin 5%, carbon fiber 4%, 3% carbon fiber pre-oxidized wire, 3% ceramic fiber, 4% Kevlar fiber, 5% chromite powder, 3% graphite, 1% magnesium oxide, 1% mica powder, and the rest of the ingredients are kaolin and diatomaceous earth mixed in equal amounts ; The preparation method is the same as in Example 1. The friction material has the characteristics of friction torque of resin-based friction materials, the coefficient of dynamic friction is ≥0.35, and the temperature at which the weight loss is 10% is greater than 600°C.

Embodiment 3

[0020] Embodiment 3: A kind of double-adhesive friction material, the mass percentage of its components is: 70% of fluoroaluminate early-strength cement, 6% of cashew nut shell oil modified phenolic resin, 4% of carbon fiber, non-asbestos mineral fiber 6%, ceramic fiber%, Kevlar fiber 2%, chromite powder 2%, graphite 8%, magnesium oxide 0.5%, and the rest of the ingredients are diatomite and zinc oxide mixed in equal amounts; the preparation method is the same as in Example 1, the The friction material has the characteristics of friction torque of the resin-based friction material, the coefficient of dynamic friction is ≥0.34, and the temperature at which the weight loss is 10% is greater than 620°C.

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Abstract

The invention discloses a double-adhesive friction material which comprises the following components in percentage by mass: 30-70% of inorganic adhesive, 8-25% of organic resin adhesive, 15-40% of reinforced fibre, 5-15% of friction performance conditioning agent and 5-20% of filler. The friction material has approximately equal frictional wear performance to the traditional resin base friction material, and thermostability of the friction material is obviously superior to that of the traditional resin base friction material; mechanical strength is increased, brittleness is improved, and influence of friction heat can be effectively resisted. The double-adhesive friction material is suitable for replacing the resin base friction material under the working condition of heavy load or longer dragging friction time.

Description

technical field [0001] The invention relates to a friction material, in particular to a double-adhesive friction material, which is suitable for replacing resin-based friction materials under the working conditions of heavy load or long dragging time, and belongs to the technical field of composite materials. Background technique [0002] Friction materials are a class of functional materials widely used in industrial transmission and braking. In order to obtain a good transmission or braking effect, the friction material requires good physical and mechanical properties, high and stable dynamic friction coefficient, small static friction coefficient and low wear rate. The acquisition of these comprehensive properties depends largely on The composition of the material. According to the different composition of materials, friction materials can be divided into rubber-based friction materials, resin-based friction materials, metal-based friction materials, ceramic-based fricti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14C04B28/34C04B28/06C04B28/04C04B28/36
Inventor 杨瑞丽傅业伟李贺军
Owner XIANYANG NORMAL UNIV
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