Self-adhesive carbon fiber and steel fiber modified polytetrafluoroethylene material and preparation method thereof

A technology of polytetrafluoroethylene and carbon fiber, applied in the field of carbon fiber, steel fiber surface modification and polytetrafluoroethylene modified materials, can solve the problem of affecting the mechanical properties of composite materials, limiting the performance of steel fiber and carbon fiber, steel fiber and carbon fiber In order to improve the quality of interface bonding, promote interpenetration and fusion, and improve surface wettability and cohesion

Inactive Publication Date: 2016-09-14
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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Experimental program
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Embodiment 1

[0021] A self-adhesive carbon fiber, steel fiber modified polytetrafluoroethylene material is characterized in that it is made from the following raw materials in parts by weight:

[0022] Aviation kerosene 25, polytetrafluoroethylene 80, carbon fiber 10, steel fiber 5, fluoro rubber powder 5, furfural 1, graphene oxide 1, SiO2 5, silane coupling agent KH550 15, 3-pentanone 1, 95% ethanol 30, an appropriate amount of acetic acid, polyisocyanate JQ-1 5, dimethylformamide (DMF) 15, 4-dimethylaminopyridine (DMAP) 10, dicyclohexylcarbodiimide (DCC) 15, water 100 parts;

[0023] 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.

[0024] The preparation method of described a kind of self-adhesive carbon fiber, steel fiber modified polytetrafluoroethylene material is characterized in that, is made by following specific steps:

[0025] a. Add carbon fiber to 25 par...

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Abstract

The invention discloses a self-adhesive carbon fiber and steel fiber modified polytetrafluoroethylene material and a preparation method thereof. The preparation method is characterized in that steel fibers and carbon fibers are used to improve the tensile strength and friction performance of polytetrafluoroethylene; at the same time, an improved melting method is used to sinter fine filling materials such as SiO2, Al powder, and the like, thus the fine filling materials can be sintered on the surface of polytetrafluoroethylene; the surface sintering state of polytetrafluoroethylene is improved, and the joint strength is obviously improved. Furthermore, aviation kerosene is used to promote the permeation and fusion among polytetrafluoroethylene materials, and thus the polytetrafluoroethylene materials can be adhered without using any adhesive.

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 self-adhesive carbon fiber and steel fiber modified polytetrafluoroethylene 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 propertie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L27/12C08K13/06C08K9/06C08K7/06C08K9/02C08K9/08
CPCC08J7/0427C08J2327/18C08J2427/18C08J2491/00C08L27/18C08L27/12C08K13/06C08K9/06C08K7/06C08K9/02C08K9/08
Inventor 苗则波
Owner ANHU WUHU CHANGJIANG JACK UP EQUIP CO LTD
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