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Wear resistant material of modified polytetrafluoroethylene resin

A technology of polytetrafluoroethylene and wear-resistant materials, applied in the field of wear-resistant materials, can solve the problems of large wear and damage of wear parts, and achieve the effect of small average wear coefficient and broad application prospects.

Inactive Publication Date: 2010-12-22
ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a wear-resistant material of modified polytetrafluoroethylene resin, which mainly solves the technical problems of relatively large wear of existing wear-resistant materials, especially the relatively large damage to the wear-resistant parts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The polyphenylene resin and the polytetrafluoroethylene resin are thoroughly mixed at a weight ratio of 1:3, and then the resin is made by cold pressing and sintering. The average wear coefficient of the obtained resin is 1.6×10 -5 g / h.

[0015] The preform is heated to 370°C, kept at this temperature for a certain period of time, and then cooled to obtain a product of the desired size.

Embodiment 2

[0017] The polyphenylene resin and the polytetrafluoroethylene resin are thoroughly mixed at a weight ratio of 11:39, and then the resin is made by hot pressing and sintering. The average wear coefficient of the obtained resin is 2.1×10 -5 g / h.

[0018] Put the preformed product together with the mold into the sintering furnace and heat up to 365°C for sintering, hold it for a certain period of time, and immediately pressurize and cool it after taking it out of the furnace to obtain the product of the required size.

Embodiment 3

[0020] The polyphenylene resin and the polytetrafluoroethylene resin are fully mixed and evenly prepared according to the weight ratio of 3:17, and then the resin is made by cold pressing and sintering. The average wear coefficient of the obtained resin is 3.0×10 -5 g / h.

[0021] The preform is heated to 375°C and kept at this temperature for a certain period of time, and then cooled to obtain a product of the desired size.

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Abstract

The invention provides a wear resistant material of modified polytetrafluoroethylene resin, which is prepared by fully mixing high polymer polybenzoate serving as a modifier with the polytetrafluoroethylene resin according to a certain ratio and by cold-pressing and sintering or hot-pressing and sintering. The polybenzoate has a high self-lubricating property, so that the problem that common filler polytetrafluoroethylene has high wear loss and particularly damages counter-grinding coupled parts to a large extent can be solved. The wear resistant material can be used as a part in extreme conditions such as high temperature, high voltage, oil-less lubrication, corrosion and the like. The wear resistant material made of the modified polytetrafluoroethylene resin of the invention has a minimum average wear coefficient and has a main characteristic of wear resistance, thereby avoiding damaging the counter-grinding coupled parts. The material can be widely applied in industrial fields such as machinery, aviation, aerospace, electronics and electricity and has a wide application prospect.

Description

technical field [0001] The invention relates to a wear-resistant material, in particular to a wear-resistant material of modified polytetrafluoroethylene resin. Background technique [0002] At present, domestic wear-resistant materials mainly include phenolic resin, glass fiber, molybdenum disulfide, carbon fiber, etc., but the biggest defect of these materials is the serious wear loss. [0003] In addition, traditional methods often use glass fiber, graphite, molybdenum disulfide and other inorganic fillers to modify polytetrafluoroethylene, but this kind of material has a large wear and a short service life, which is easy to cause wear to the grinding pair. Contents of the invention [0004] The purpose of the present invention is to provide a wear-resistant material of modified polytetrafluoroethylene resin, which mainly solves the technical problems of relatively large wear of existing wear-resistant materials, especially relatively large damage to the wear-resistant ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L67/00
CPCC08L27/18C08L67/04C08L67/00C08F8/14C08J5/00
Inventor 肖平张建新周云峰
Owner ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
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