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Preparation method of carbon fiber friction material

A friction material and carbon fiber technology, applied in friction linings, chemical instruments and methods, mechanical equipment, etc., can solve problems such as high cost, high brittleness, and easy damage, and achieve high-efficiency manufacturing, high Mohs hardness, and durability good heat effect

Inactive Publication Date: 2020-01-07
山东万邦新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above existing technologies do not contain asbestos and metal components, they all use ceramic fibers as the main component and belong to ceramic-based friction materials. Compared with semi-metallic friction materials, the cost is higher, and they are more brittle and easily damaged

Method used

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  • Preparation method of carbon fiber friction material
  • Preparation method of carbon fiber friction material
  • Preparation method of carbon fiber friction material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The invention discloses a method for preparing a carbon fiber friction material, the steps are as follows:

[0032] 1. Raw material selection:

[0033] Choose Zoltek or Taili large tow PAN-based pre-oxidized wire, use 24K or 48K raw wire, the diameter of the single wire is 10-13um, and the density is 1.4g / cm 3 , limiting oxygen index 35.

[0034] 2. Spinning and weaving

[0035] Spin and weave PAN-based pre-oxidized yarn,

[0036] a) The specification of spinning is determined as small yarn weaving, 20 yarns are combined into two strands to form 20 / 2 count yarns, and the twist is 300 twists;

[0037] b) Weave 20 / 2 count yarn according to the specification of warp and weft density of 10×10 threads / cm, and the grammage of the woven cloth is 200g / m 2 For the cloth, the thickness measured by the universal thickness gauge is 0.6mm thick;

[0038] c) The width of the loom is 1.6 meters wide and 150 meters long.

[0039] 3. High temperature carbonization

[0040] Carbon...

Embodiment 2

[0049] A method for preparing a carbon fiber friction material, the steps are as follows, the difference from Example 1 is:

[0050] (1) In the raw material selection process of step 1, select the pre-oxygenated silk with the limiting oxygen index of 38;

[0051] (2) step b) in the spinning and weaving process of step 2, the pre-oxidized silk cloth grammage that is woven into is 230g / m 2 , The general thickness gauge measures the thickness to 0.4mm.

[0052] (3) During the high-temperature carbonization process in step 3, the pre-oxidized silk cloth is subjected to high-temperature carbonization at 1000°C in an oxygen-isolated environment to reduce the resistance of the conductive carbon fiber cloth to 1.3Ω / 10cm, and the unit square gram weight is 150g / m 2 , the thickness is 0.55mm;

[0053] (4) Step a) in the process of deploying epoxy resin in step 4, the epoxy resin configuration ratio is: epoxy resin adhesive: diluent: curing agent = 7:2.5:1;

[0054] (5) During step 5 ...

Embodiment 3

[0057] A method for preparing a carbon fiber friction material, the steps are as follows, the difference from Example 1 is:

[0058] (1) In the raw material selection process of step 1, select the pre-oxygenated silk with the limiting oxygen index of 37;

[0059] (2) step b) in the spinning and weaving process of step 2, the pre-oxidized silk cloth grammage that is woven into is 170g / m 2 , the thickness measured by the universal thickness gauge is 0.8mm;

[0060] (3) During the high-temperature carbonization process in step 3, the pre-oxidized silk cloth is subjected to high-temperature carbonization at 1000°C in an oxygen-isolated environment to reduce the resistance of the conductive carbon fiber cloth to 1.5Ω / 10cm, and the unit square gram weight is 155g / m 2 , the thickness is 0.65mm;

[0061] (4) Step a) in the process of deploying epoxy resin in step 4, the epoxy resin configuration ratio is: epoxy resin adhesive: diluent: curing agent = 5:3.5:1;

[0062] (5) In step 5...

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Abstract

The invention discloses a preparation method of a carbon fiber friction material, and belongs to the technical field of friction material preparation. The carbon fiber friction material is obtained byspinning and weaving of polyacrylonitrile (PAN)-based pre-oxidized fibers, carbonizationat a high temperature and then impregnation in an epoxy resin. Good heat conduction, electric conduction and uneven surface structure of an electric conduction carbon fiber cloth are fully utilized to realize the combination of the electric conduction carbon fiber material and the epoxy resin in order to formthe friction material with high strength, friction resistance and good heat resistance. The technical problems of high production and serious environmental pollution of friction materials in the priorart, are solved. The preparation method has the advantages of simple process, ensuring of the stable quality of the friction material under the condition of low cost, and facilitation of industrial promotion.

Description

technical field [0001] The invention relates to the technical field of friction material preparation, and more specifically relates to a preparation method of carbon fiber friction material. Background technique [0002] Asbestos has high tensile strength, excellent mechanical properties and high temperature resistance, and is cheap. Therefore, in the prior art, asbestos is widely used in the fields of building materials, fire protection and friction materials. Friction materials are generally made of asbestos fiber as a reinforcing material, mixed with a certain amount of phenolic resin, and a certain amount of barite, feldspar powder, rubber components or other fillers. However, during the manufacturing process, asbestos fibers will generate a large amount of dust, which will pollute the production environment and cause certain hazards to the health of operators. In addition, asbestos-based friction materials will also cause asbestos dust pollution as the number of fricti...

Claims

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Application Information

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IPC IPC(8): C09K3/14F16D69/02F16D25/12
CPCC09K3/149F16D25/12F16D69/023
Inventor 刘文军
Owner 山东万邦新材料科技有限公司
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