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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AI-Extracted 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 r...
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Method used

As can be seen from the above table, the coefficient of friction of the product of the present invention does not change substantially with the increase of temperature, indicating that its heat resistance is good and stable. The wear rate of the product of the present invention is far lower than the requirements of the national stand...
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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.

Technology Topic

Examples

  • Experimental program(4)

Example Embodiment

[0019] Example 1:
[0020] Weigh 5 parts of phenolic resin and 0.05 parts of hexamethylenetetramine, and dissolve them in the mixed solution of industrial alcohol and xylene. At the same time, add 1 part of silane coupling agent. After stirring, 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 uniformly, it was dried in an oven at 90°C for 24 hours to obtain a friction material.

Example Embodiment

[0021] Example 2:
[0022] Weigh 10 parts of boron-modified phenolic resin and 0.15 parts of urotropine, and dissolve them in a mixed solution of industrial alcohol and acetone. At the same time, add 2.5 parts of sodium dodecylbenzene sulfonate, and 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 uniformly, it was dried in an oven at 120°C for 8 hours to obtain a friction material.

Example Embodiment

[0023] Example 3:
[0024] Weigh 15 parts of melamine-modified phenolic resin, 0.5 part of hexamethylenetetramine and 3 parts of hexamethylenetetramine, and dissolve them in the mixed solution of industrial alcohol and ethyl acetate. At the same time, add 1.5 parts of sodium polyacrylate and 3 parts of ten. Sodium dialkyl sulfate, add 15 parts of steel fiber and 18 parts of pitch carbon fiber after stirring evenly, mix and stir evenly, and dry in an oven at 100°C for 12 hours. After drying the fiber coated with resin, 5 parts of molybdenum disulfide, 15 parts of graphite, 30 parts of barite, 10 parts of alumina, and 10 parts of tire powder are added, mixed and stirred for 5 hours to obtain a friction material.
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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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