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Graphene modified teflon solid lubrication coating and preparation method thereof

A solid lubricating coating, polytetrafluoroethylene technology, applied in the direction of coating, can solve the problems of poor mechanical properties, poor wear resistance, poor adhesion of transfer film, etc., to achieve good thermal stability, good self-lubricating performance Effect

Inactive Publication Date: 2016-02-17
JIANGSU YOUCHENG POLYMER MATERIALS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the poor mechanical properties of PTFE itself and the extremely low surface energy, the transfer film formed by PTFE has poor adhesion on the counterpart, which will lead to extremely poor wear resistance when using PTFE materials as solid lubricants. It cannot meet the use requirements of friction parts under extremely harsh working conditions such as high temperature, high pressure, and vacuum, so it is necessary to modify PTFE to improve its wear resistance

Method used

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  • Graphene modified teflon solid lubrication coating and preparation method thereof

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Embodiment 1

[0019] A kind of graphene-modified polytetrafluoroethylene solid lubricating coating described in the present embodiment, its composition and the mass parts of each composition are: 100 parts of polytetrafluoroethylene; 4 parts of molybdenum disulfide; 3 parts of graphite; 3 parts of graphene; 1 part of graphene oxide; 200 parts of water.

[0020] The polytetrafluoroethylene described in this embodiment is the solid portion in the polytetrafluoroethylene emulsion, and the 200 parts of water are composed of water in the polytetrafluoroethylene emulsion and the remainder of water, wherein the polytetrafluoroethylene emulsion The mass ratio of polytetrafluoroethylene to water in the polytetrafluoroethylene emulsion is 6:4. The polytetrafluoroethylene is polytetrafluoroethylene particles, and the particle diameter of the polytetrafluoroethylene particles is 0.2-0.4 μm. The molybdenum disulfide is colloidal molybdenum disulfide fine powder, and the particle size of the colloidal m...

Embodiment 2

[0025] A kind of graphene-modified polytetrafluoroethylene solid lubricating coating described in the present embodiment, its composition and the mass parts of each composition are: 100 parts of polytetrafluoroethylene; 4 parts of molybdenum disulfide; 4 parts of graphene ; 2 parts of graphene oxide; 200 parts of water.

[0026] The polytetrafluoroethylene described in this embodiment is the solid portion in the polytetrafluoroethylene emulsion, and the 200 parts of water are composed of water in the polytetrafluoroethylene emulsion and the remainder of water, wherein the polytetrafluoroethylene emulsion The mass ratio of polytetrafluoroethylene to water in the polytetrafluoroethylene emulsion is 6.5:3.5. The polytetrafluoroethylene is polytetrafluoroethylene particles, and the particle diameter of the polytetrafluoroethylene particles is 0.2-0.4 μm. The molybdenum disulfide is colloidal molybdenum disulfide fine powder, and the particle size of the colloidal molybdenum disul...

Embodiment 3

[0029] A kind of graphene-modified polytetrafluoroethylene solid lubricating coating described in the present embodiment, its component and the mass parts of each composition are: 100 parts of polytetrafluoroethylene; 4 parts of molybdenum disulfide; 4 parts of graphite; 3 parts of graphene; 200 parts of water.

[0030] The polytetrafluoroethylene described in this embodiment is the solid portion in the polytetrafluoroethylene emulsion, and the 200 parts of water are composed of water in the polytetrafluoroethylene emulsion and the remaining water, wherein the polytetrafluoroethylene emulsion The mass ratio of polytetrafluoroethylene to water in the polytetrafluoroethylene emulsion is 5.5:4.5. The polytetrafluoroethylene is polytetrafluoroethylene particles, and the particle diameter of the polytetrafluoroethylene particles is 0.2-0.4 μm. The molybdenum disulfide is colloidal molybdenum disulfide fine powder, and the particle size of the colloidal molybdenum disulfide fine po...

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Abstract

The invention discloses a graphene modified teflon solid lubrication coating which is prepared from, by mass, 100 parts of teflon, 0.3-10 parts of molybdenum disulfide, 0-8 parts of graphite, 0.1-5 parts of grapheme, 0-6 parts of graphene oxide and 80-380 parts of water. A preparation method of the graphene modified teflon solid lubrication coating includes the steps that teflon emulsion, the molybdenum disulfide, the graphite, the grapheme, the graphene oxide and the balance water are mixed to be uniform and then sprayed on the surface of a metal product in a coating mode, then high-temperature sintering and cooling are conducted, and the graphene modified teflon solid lubrication coating can be obtained. The obtained graphene modified teflon solid lubrication coating has good self-lubricating performance, mechanical properties, wear reduction and resistance, heat stability and adhesion.

Description

technical field [0001] The invention relates to a solid lubricating coating, in particular to a graphene-modified polytetrafluoroethylene solid lubricating coating and a preparation method for the solid lubricating coating. Background technique [0002] Solid lubricating coating is a special lubricating material. Materials such as molybdenum disulfide, graphite, and polytetrafluoroethylene all have good frictional mechanical properties and are commonly used solid lubricating materials. It has become a new technology that cannot be replaced by traditional hydrodynamic lubrication. Polytetrafluoroethylene (PTFE for short) is an excellent engineering plastic with excellent self-lubricating properties and low coefficient of friction, and is one of the best dry friction materials among known solid lubricating materials. However, due to the poor mechanical properties of PTFE itself and the extremely low surface energy, the transfer film formed by PTFE has poor adhesion on the cou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/18C09D7/12
Inventor 季国庆郭强张文祥
Owner JIANGSU YOUCHENG POLYMER MATERIALS SCI & TECH CO LTD
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