Polytetrafluoroethylene material and preparation method therefor

A technology of polytetrafluoroethylene and basic materials, applied in the field of polytetrafluoroethylene materials and its preparation, can solve the problems of irreparable creep property of polytetrafluoroethylene, reduction of tensile ductility of raw materials, reduction of service life of products, etc. , to achieve superior self-lubricating performance, high fatigue resistance, and enhanced hardness

Inactive Publication Date: 2015-09-09
镇江润方密封件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the ordinary PTFE wear-resistant formula is to add glass fiber to the raw material to enhance its wear resistance by increasing the hardness of the product, but the glass fiber is brittle. Using this formula can neither make up for the PTFE wear resistance. The lack of creep properties of vinyl fluoride raw materials reduces the tensile ductility of raw materials at the same time
Creep will make the product unstable and easy to deform in the high temperature generated by high-speed friction; the tensile ductility will be reduced, and the brittleness of the product will increase. service life, increase the cost of enterprise maintenance

Method used

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  • Polytetrafluoroethylene material and preparation method therefor
  • Polytetrafluoroethylene material and preparation method therefor
  • Polytetrafluoroethylene material and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A polytetrafluoroethylene material is composed of the following components by weight: 6 parts of polytetrafluoroethylene, 0.8 part of molybdenum disulfide, 0.5 part of carbon fiber and 0.5 part of p-polystyrene.

Embodiment 2

[0020] A polytetrafluoroethylene material is composed of the following components by weight: 7 parts of polytetrafluoroethylene, 1.2 parts of molybdenum disulfide, 2.5 parts of carbon fiber and 2.5 parts of p-polystyrene.

Embodiment 3

[0022] A polytetrafluoroethylene material is composed of the following components by weight: 6 parts of polytetrafluoroethylene, 1 part of molybdenum disulfide, 1.5 parts of carbon fiber and 1.5 parts of p-polystyrene.

[0023] The materials in the above-mentioned Examples 1, 2, and 3 are prepared according to the following steps:

[0024] Step S1, first drying the p-polyphenylene at a high temperature of 300 degrees Celsius for 2 hours, and drying the carbon fiber at 260 degrees Celsius for 2 hours for later use;

[0025] In step S2, the two materials of para polyphenylene and carbon fiber dried in step S1 are mixed with molybdenum disulfide, put into the base material of polytetrafluoroethylene powder, and the high-speed mixing time is 30 seconds;

[0026] Step S3, adding a titanate coupling agent to the mixture obtained in step S2, and mixing again for 1 minute to obtain the material.

[0027] When mixing in step S2 and step S3, it is necessary to control the temperature i...

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PUM

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Abstract

The invention discloses a polytetrafluoroethylene material. The polytetrafluoroethylene material consists of the following components in parts by weight: 6-7 parts of polytetrafluoroethylene, 0.8-1.2 parts of molybdenum disulfide, 0.5-2.5 parts of carbon fibers and 0.5-2.5 parts of para-position polyphenyl. In the formula developed by the invention, the carbon fibers have the characteristics of no creep deformation, high intensity and high fatigue resistance, so that the defect of the creep deformation of the polytetrafluoroethylene raw materials is overcome, and the hardness of products is strengthened; the molybdenum disulfide has extremely good lubrication effect, so that the products have a better oil-free self-lubricating characteristic; the para-position polyphenyl has the characteristics such as high temperature resistance, good heat stability, corrosion resistance, superior self-lubricating property and the like, and the integral comprehensive properties of the materials can be further improved. Therefore, the products prepared from the raw materials which are formed by mixing the polytetrafluoroethylene, the carbon fibers, the para-position polyphenyl and the molybdenum disulfide according to the proportion have extremely good abrasion resistance, extremely good high temperature resistance, extremely good stability and extremely good pressure resistance.

Description

technical field [0001] The invention relates to the technical field of polytetrafluoroethylene materials, in particular to a polytetrafluoroethylene material and a preparation method thereof. Background technique [0002] At present, the ordinary PTFE wear-resistant formula is to add glass fiber to the raw material to enhance its wear resistance by increasing the hardness of the product, but the glass fiber is brittle. Using this formula can neither make up for the PTFE wear resistance. The deficiency of the creep property of the vinyl fluoride raw material itself reduces the tensile ductility of the raw material itself at the same time. Creep will make the product unstable and easy to deform in the high temperature generated by high-speed friction; the tensile ductility will be reduced, and the brittleness of the product will increase. The service life increases the maintenance cost of the enterprise. Contents of the invention [0003] The object of the present inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L65/00C08K13/04C08K7/06C08K3/30
CPCC08L27/18C08L2201/08C08L65/00C08K7/06C08K2003/3009C08L65/04
Inventor 方培倪佳明
Owner 镇江润方密封件有限公司
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