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Carbon nanotube/polytetrafluoroethylene composite material and preparation method thereof

A technology of polytetrafluoroethylene and carbon nanotubes, applied in the field of steel fiber surface modification and polytetrafluoroethylene modified materials, carbon fiber, can solve the problem of affecting the mechanical properties of composite materials, limiting the high performance of steel fiber and carbon fiber, steel fiber And carbon fiber surface inertness and other problems, to improve the interface bonding quality, increase strength, improve surface wettability and cohesiveness

Inactive Publication Date: 2016-09-21
ANHU WUHU CHANGJIANG JACK UP EQUIP CO LTD
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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 1

[0022] The technical problem to be solved in the present invention adopts following technical scheme to realize:

[0023] A carbon nanotube / polytetrafluoroethylene composite material is characterized in that it is made from the following raw materials in parts by weight:

[0024] Carbon nanotube 5, polytetrafluoroethylene 80, carbon fiber 10, acetone 15, steel fiber 5, fluoro rubber powder 20, glass fiber 1, 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, 100 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] The preparation method of a kind of carbon nanotube / polytetrafluoroethylene composite material is characterized in that, it is made by the followin...

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Abstract

The invention discloses a carbon nanotube / polytetrafluoroethylene composite material and a preparation method thereof. The composite material is characterized in that steel fibers and carbon fibers are utilized to enhance the stretching resistance and frictional properties of the polytetrafluoroethylene; and the improved fusion process is utilized to sinter fine fillers, such as SiO2, Al powder and the like, onto the polytetrafluoroethylene surface at high temperature, so that the surface sintering behavior of the polytetrafluoroethylene is improved, thereby obviously enhancing the bonding strength. Besides, the carbon nanotubes are added to effectively enhance the strength, high temperature resistance, oxidation resistance and corrosion resistance of the composite material and lower the friction factor of the composite 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 carbon nanotube / polytetrafluoroethylene composite material 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 a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L27/12C08K13/06C08K9/06C08K9/02C08K9/04C08K7/14C08K7/24C08K7/06C08J7/04
CPCC08J7/0427C08J2327/18C08J2427/18C08K2201/004C08K2201/011C08L27/18C08L2201/08C08L2205/02C08L27/12C08K13/06C08K9/06C08K9/02C08K9/04C08K7/14C08K7/24C08K7/06
Inventor 苗则波
Owner ANHU WUHU CHANGJIANG JACK UP EQUIP CO LTD
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