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Preparation method of integrally-woven friction material

A technology of integral weaving and friction materials, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of white smoke, difficult drilling, scratching the dual surface, etc.

Inactive Publication Date: 2021-01-15
TALFRI BRAKES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this friction material still has the disadvantages that the product hardness is too large and it is not easy to drill holes
[0006] Therefore, for the existing fiber thread or grid cloth impregnated and hot-pressed friction material, it has problems such as too high hardness, difficult drilling, scratching of the opposite surface, white smoke, unpleasant smell and material delamination. , it is necessary to provide a new friction material

Method used

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  • Preparation method of integrally-woven friction material
  • Preparation method of integrally-woven friction material
  • Preparation method of integrally-woven friction material

Examples

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preparation example Construction

[0037] The embodiment of the present invention relates to a method for preparing an integral braided friction material, comprising the following steps:

[0038] 1) Preparing ply yarns: plying metal fibers, inorganic fibers and / or organic fibers to make ply yarns;

[0039] In one embodiment of the present invention, the metal fiber is selected from at least one of copper wire, zinc wire, and silver wire; the inorganic fiber is glass fiber and / or basalt fiber; the organic fiber is selected from polyester, At least one of acrylic fiber, nylon fiber, polypropylene fiber, aramid fiber and cotton thread.

[0040] Among the above-mentioned fibers, the metal fiber has good thermal conductivity and has a certain hardness as a supporting material. It is required that the hardness of the metal should not be too high, otherwise it cannot be plied with other fibers. Inorganic fibers have good heat resistance, mechanical properties and wear resistance. Polymer organic fibers such as arami...

Embodiment 1

[0055] An integral braided friction material, the preparation method of which comprises the following steps:

[0056] 1) Preparation of plied wire: 20 parts of copper wire, 50 parts of glass fiber and 30 parts of cotton thread are plied to make a plied wire;

[0057] 2) Preparation of woven cloth: using a braiding machine and a half-cross integral weaving method, the ply yarn prepared in step 1) is made into a woven cloth with a density of 1.2 g / cm 3 ;

[0058] 3) Resin impregnation: immerse the woven fabric prepared in step 2) into liquid phenolic resin for 60 minutes, take it out and wait for the resin to dry naturally, then place it in an oven and dry at 120°C for 50 minutes to obtain a green body;

[0059] 4) Hot press curing: according to the size of the clutch disc, cut the green body prepared in step 3) into the desired shape, and then place it in a hot press mold for hot press curing. The temperature of hot press curing is 130°C and the pressure is 13MPa , the time i...

Embodiment 6

[0075] Compared with Example 1, Example 6 has similar mechanical properties, only the coefficient of friction is slightly lower than Example 1, which shows that the weaving method has a certain influence on the temperature resistance of the friction material. The friction material of Example 6 adopts the full-intersection integral weaving method, and the heat conduction distance of the upper and lower sides is longer than that of the friction material obtained by the half-intersection integral weaving method in Example 1, the heat dissipation is worse, and the friction coefficient is slightly reduced.

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Abstract

The invention provides a preparation method of an integrally-woven hot-pressed friction material. According to the method, metal fibers, inorganic fibers and / or organic fibers are made into plied yarns; the plied yarns are woven into cloth through a multi-layer integral weaving method; the cloth is soaked in resin and then dried, so that a blank can be obtained; the blank is cut and then placed ina hot-pressing mold; hot-pressing curing is conducted to obtain a semi-finished product; and the semi-finished product is subjected to heat treatment, machining and other procedures, so that a finished product can be obtained. As the friction material takes the integrally woven cloth as a framework, the fiber content of thefriction material is high, and the resin content of the friction materialis low. The finished product is high in strength and low in hardness, has certain flexibility, and can assist in solving the problems of an existing friction material.

Description

technical field [0001] The invention relates to the technical field of friction materials for clutches, in particular to a method for preparing integrally braided friction materials. Background technique [0002] Friction material is a key part of various mechanical braking and transmission, and is indispensable in various machinery such as automobiles, motorcycles, ships, aircraft, construction machinery, transportation machinery, chemical machinery, mining machinery, petroleum machinery, and engineering machinery. Friction material is a key safety accessory in its application field. Although it occupies a small proportion of the cost of the main engine, its functional position is very important. The quality of the friction material is the first to affect the use effect of the machine. If it is good, it means success and success. If it is bad, it will lead to failure and disaster. [0003] In addition to being able to meet the torque requirements required for braking or tr...

Claims

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Application Information

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IPC IPC(8): C09K3/14
CPCC09K3/14
Inventor 曾立宏杨正茂周继煜
Owner TALFRI BRAKES
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