Self-cleaning polytetrafluoroethylene material and preparation method thereof

A polytetrafluoroethylene, self-cleaning technology, applied in the direction of coating, etc., can solve the problems of high inertia of steel fiber and carbon fiber surface, limit the high performance of steel fiber and carbon fiber, affect the mechanical properties of composite materials, etc., and improve the surface wettability and cohesiveness, increasing carbon bonding strength, and improving the effect of interface bonding quality

Inactive Publication Date: 2016-11-16
ANHUI RONGDA VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the surface inertia of steel fibers and carbon fibers is large, which directly affects the mechanical properties of composite materials and limits the high performance of steel fibers and carbon fibers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] A carbon fiber and steel fiber modified polytetrafluoroethylene material with self-cleaning function is characterized in that it is made from the following raw materials in parts by weight:

[0024] Tetrabutyl titanate 20, absolute ethanol 60, polytetrafluoroethylene 90, carbon fiber 15, steel fiber 5, fluororubber powder 5, glacial acetic acid 4, graphene oxide 1, SiO 2 5. Silane coupling agent KH550 15, 95% ethanol 30, acetic acid amount, polyisocyanate JQ-1 5, dimethylformamide (DMF) 15, 4-dimethylaminopyridine (DMAP) 10, dicyclohexyl carbon di Imine (DCC) 15, 200 parts of water;

[0025] The median length of the carbon fiber is 75-150 μm, the median length of the steel fiber is 50-150 μm, and the particle size of the fluorine rubber powder is 80-200 mesh.

[0026] A kind of preparation method of described carbon fiber, steel fiber modified polytetrafluoroethylene material with self-cleaning function is characterized in that, it is made by the following specific st...

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Abstract

The present invention discloses a self-cleaning polytetrafluoroethylene material and a preparation method thereof, characterized in that steel fiber and carbon fiber are utilized to improve tensile strength and frictional performance of polytetrafluoroethylene, the modified melting method is also utilized to sinter the fine fillers such as SiO2 and Al powder at high temperature to the surface of the polytetrafluoroethylene, the surface sintering state of the polytetrafluoroethylene is improved, and gluing strength is significantly improved. In addition, the sol-gel method is utilized to synthesize nano titanium dioxide and spread it to the surface of a composite, and the self-cleaning functionality is imparted to the material.

Description

technical field [0001] The invention relates to the fields of carbon fiber and steel fiber surface modification and polytetrafluoroethylene modified materials, in particular to a polytetrafluoroethylene material with self-cleaning function and a preparation method thereof. Background technique [0002] Polytetrafluoroethylene (PTFE) is resistant to high and low temperatures, chemical corrosion, no water absorption, low coefficient of friction, excellent dielectric properties, known as the "King of Plastics". But because of the low surface energy (surface tension is (31 ~ 34) ×10 -3 N / m), high crystallinity and molecular chain structure symmetry and non-polarity, making it difficult to be bonded, restricting its application in the field of valve sealing materials. For this reason, scientists have adopted various methods to try to solve the surface bonding problem of PTFE, among which there are many studies on changing the surface structure or properties of PTFE. The main ones...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L27/12C08L75/00C08K13/06C08K9/06C08K9/02C08K9/04C08K7/06C08K3/04C08K3/36C08K5/544C08J7/06
CPCC08J7/06C08J2327/18C08L27/18C08L2205/02C08L2205/03C08L27/12C08L75/00C08K13/06C08K9/06C08K9/02C08K9/04C08K7/06C08K3/04C08K3/36C08K5/544
Inventor 胡光荣
Owner ANHUI RONGDA VALVE
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