Whisker reinforced resin-base composite friction material and its prepn process

A technology of composite friction material and reinforced resin matrix, which is applied in the field of whisker reinforced resin matrix composite friction material and its preparation, can solve the problem that the related properties such as mechanical and thermal properties are difficult to be optimally matched, hinder the application of resin matrix composite materials, and the improvement of wear resistance is not enough. Significant other problems, to achieve the effect of rich raw materials, reduce lubrication maintenance costs, improve work reliability and service life

Inactive Publication Date: 2006-10-18
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although traditional modification methods such as fiber reinforcement and nanoparticle compounding can improve the tribological properties such as friction reduction and wear resistance of resin-based composite friction materials, as well as certain aspects of mechanical and thermal properties, but as friction These modification methods still have pr

Method used

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preparation example Construction

[0019] The above-mentioned preparation method of whisker-reinforced resin-based composite friction material is characterized in that it comprises the following preparation steps:

[0020] (a) drying calcium carbonate whiskers and polyether ether ketone raw materials at a temperature of 130-150° C. for 3-5 hours;

[0021] (b) Mix the dried calcium carbonate whiskers and polyetheretherketone raw materials in step (a), put them into a mixer, and stir and mix at a high speed for 8 to 10 minutes at a rotation speed of not less than 1000 rpm;

[0022] (c) Put the material stirred in step (b) into the mold cavity of a hot-pressing mold at 380-390°C and melt it, pressurize 20Mpa to shape the material, keep the pressure for 8-10 minutes, and when the temperature of the mold cools to 100°C, take off Mold cooled to room temperature;

[0023] (d) keeping the material after demoulding and cooling in step (c) at a temperature of 250° C. for 1 hour to obtain a product.

Embodiment 1

[0025] Embodiment 1 (preferred embodiment)

[0026] Take 5 parts of calcium carbonate whiskers and 95 parts of polyether ether ketone as raw materials, wherein the calcium carbonate whiskers have a length of 30 μm, an aspect ratio of 20, and a density of 2.86 g / cm 3 , the density of polyether ether ketone is 1.32g / cm 3 , the particle size is less than 100 μm, prepared according to the following steps:

[0027] (a) drying calcium carbonate whiskers and polyetheretherketone raw materials at a temperature of 130° C. for 5 hours;

[0028] (b) Take the calcium carbonate whiskers dried in step (a) and mix them with polyether ether ketone raw materials, put them into a blender, and stir and mix at a high speed of not less than 1000 rpm for 8 minutes;

[0029] (c) Put the material stirred in step (b) into the mold cavity of a 380°C hot-pressing mold to melt, pressurize at 20Mpa to shape the material, hold the pressure for 8 minutes, and when the mold cools down to 100°C, demould and...

Embodiment 2

[0031] Embodiment 2 (preferred embodiment)

[0032] Take 15 parts of calcium carbonate whiskers and 85 parts of polyether ether ketone as raw materials, wherein the calcium carbonate whiskers have a length of 25 μm, an aspect ratio of 25, and a density of 2.86 g / cm 3 , the density of polyether ether ketone is 1.32g / cm 3 , the particle size is less than 100 μm, prepared according to the following steps:

[0033] (a) drying calcium carbonate whiskers and polyetheretherketone raw materials at a temperature of 140° C. for 4 hours;

[0034] (b) Take the calcium carbonate whiskers dried in step (a) and mix them with polyether ether ketone raw materials, put them into a blender, and stir and mix at a high speed for 9 minutes at a rotation speed of not less than 1000 rpm;

[0035] (c) Put the material stirred in step (b) into the cavity of a 385°C hot-pressing mold to melt, pressurize at 20Mpa to form the material, hold the pressure for 9 minutes, and when the temperature of the mol...

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Abstract

The present invention relates to whisker reinforced resin-base composite friction material and its preparation process. The whisker reinforced resin-base composite friction material is prepared with calcium carbonate whisker in 5-30 weight portions and polyether ether ketone in 70-95 weight portions; and the preparation process includes the following steps: drying calcium carbonate whisker and polyether ether ketone at 130-150 deg.c for 3-5 hr, mixing through high speed stirring in a stirrer for 8-10 min, melting the mixture in a hot die at 380-390 deg.c, pressurizing at 20 MPa to form, maintaining for 8-10 min, cooling inside the die to 100 deg.c, demolding, cooling to room temperature, and maintaining at 250 deg.c of 1 hr to obtain the product. The calcium carbonate whisker reinforced polyether ether ketone composite friction material has low friction coefficient, low wear rate, high bearing capacity, low cost and other advantages.

Description

technical field [0001] The invention relates to a whisker-reinforced resin-based composite friction material and a preparation method thereof. Background technique [0002] Many frictional conditions in the military high-tech field represented by aerospace have exceeded the usual use limit, so it is necessary to seek new high-strength anti-friction and wear-resistant materials to adapt to complex working environments, while the civil engineering field is based on the working environment, Energy saving, environmental protection, clean production and other needs also put forward higher requirements for high-performance oil-free lubricating friction materials. Polymer composite friction materials show strong application potential in these fields due to their outstanding performance, price, molding process and other advantages. Polymer materials, especially high-performance engineering plastics, have become key materials that advanced countries attach importance to development ...

Claims

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Application Information

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IPC IPC(8): C08J5/14C08K3/26C08K7/08C08L71/00
Inventor 林有希高诚辉黄健萌林谢昭李志方
Owner FUZHOU UNIVERSITY
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