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Method for preparing friction material by wet type mixing material

A friction material and wet mixing technology, which is applied in the field of friction material preparation, can solve the problems of uneven dispersion of components, weak bonding between resin and fiber, and high dosage, and achieves simple preparation process, improved friction performance and application. The effect of life and production cost reduction

Inactive Publication Date: 2007-09-19
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a friction material that is conducive to improving the performance of the friction material and has a simple process in view of the disadvantages of weak combination of resin and fiber, excessive dosage, and uneven dispersion of components that exist when dry blending is used in the current friction material preparation process. Method for preparing friction material by wet mixing with low cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Weigh 5 parts of phenolic resin and 0.05 parts of hexamethylenetetramine, dissolve in the mixed solution of industrial alcohol and xylene, add 1 part of silane coupling agent at the same time, stir well, add 8 parts of aramid fiber and 12 parts of steel Fiber, after stirring, add 1.5 parts of molybdenum disulfide, 4 parts of graphite, 16 parts of barite, 5 parts of wollastonite, and 4 parts of tire powder. After mixing and stirring evenly, dry in an oven at 90° C. for 24 hours to obtain a friction material.

example 2

[0022] Weigh 10 parts of boron-modified phenolic resin and 0.15 parts of urotropine, dissolve them in the mixed solution of industrial alcohol and acetone, add 2.5 parts of sodium dodecylbenzenesulfonate at the same time, stir evenly, add 8 parts of steel fiber and 10 parts of silicon carbide fiber and 10 parts of pitch carbon fiber, after stirring, add 3.5 parts of molybdenum disulfide, 7 parts of graphite, 30 parts of barite, 10 parts of wollastonite, and 10 parts of tire powder. After mixing and stirring evenly, dry in an oven at 120° C. for 8 hours to obtain a friction material.

example 3

[0024] Weigh 15 parts of melamine-modified phenolic resin, 0.5 part of hexamethylenetetramine and 3 parts of urotropine, dissolve them in a mixed solution of industrial alcohol and ethyl acetate, add 1.5 parts of sodium polyacrylate and 3 parts of ten Dialkyl sodium sulfate, after stirring evenly, add 15 parts of steel fiber and 18 parts of pitch carbon fiber, mix and stir evenly, and dry in an oven at 100°C for 12 hours. After drying the resin-coated fiber, add 5 parts of molybdenum disulfide, 15 parts of graphite, 30 parts of barite, 10 parts of alumina, and 10 parts of tire powder, and mix and stir for 5 hours to obtain a friction material.

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PUM

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Abstract

The invention discloses a method of preparing friction material from blending material by wet method, which includes steps: dissolving resin into solvent to forming resin solution, immerging reinforcing fiber into the resin solution and adding surfactant simultaneously to make the resin and the reinforcing fiber knitted together and dispersed equally; mixing the reinforcing fiber wrapped with resin, friction capability regulator and filler, stirring equally, drying and obtaining the friction material. Advantages of the method is simple, realizing equal mixing of the fiber and resin by mixing the friction material by wet method and wrapping the fiber utilizing fluidity of resin solution, enhancing combination strength of resin and fiber under action of surfactant, decreasing amount of used resin and fiber, reducing production cost, avoiding evulsion of the fiber by friction force during braking process, and increasing friction capability and service life of brake block. The prepared friction material can be widely used for preparing motor vehicle brake block, machine tool, and brake and clutch lining for electrode.

Description

technical field [0001] The invention relates to a preparation method of friction materials, in particular to a preparation method of friction materials used for motor vehicle brake pads, machine tool and electrode brakes, clutch linings and the like. Background technique [0002] The friction material for automobile braking is also called brake pad. Its main function is to reduce the relative motion between the friction material and the parts it is attached to through friction, and at the same time convert kinetic energy into heat, and then absorb or dissipate the heat. Brake pads are one of the most important safety components in the car braking system, which is related to the life and property safety of car drivers. [0003] The raw materials of friction materials and brake pads for automobile braking are generally composed of resin, reinforcing fiber, friction performance modifier, etc. Traditional brake pads are mainly reinforced with asbestos fibers. Since asbestos was...

Claims

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Application Information

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IPC IPC(8): C08J5/14C08J5/04C08L61/06C08L61/14C08K5/42C08K3/00
Inventor 王焕平徐时清
Owner CHINA JILIANG UNIV
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