What is PTFE hose material?| BESTEFLON

Cov khoom siv ptfe raj ua los ntawm dab tsi?

Kev taw qhia txog khoom

1,Ptfe rajyog lwm lub npe rau polytetrafluoroethylene, cov lus Askiv luv yog PTFE, (feem ntau hu ua "Plastic King, Hara"), thiab cov mis tshuaj yog -(CF2-CF2)n-. Polytetrafluoroethylene tau raug tshawb pom tsis raug hauv xyoo 1938 los ntawm tus kws tshuaj Dr. Roy J. Plunkett hauv DuPont's Jackson Laboratory hauv New Jersey, Tebchaws Meskas Thaum nws sim ua ib qho chlorofluorocarbon tshiab Hauv cov ntaub ntawv ntawm cov tub yees sib xyaw. Cov khoom ntawm cov khoom siv no feem ntau hu ua "txheej tsis lo"; nws yog cov khoom siv polymer hluavtaws uas siv fluorine los hloov tag nrho cov hydrogen atoms hauv polyethylene. Cov khoom siv no tiv taus cov kua qaub, alkalis, thiab ntau yam organic solvents, thiab yuav luag tsis yaj hauv txhua cov kuab tshuaj. Tib lub sijhawm, PTFE muaj cov yam ntxwv ntawm kev tiv taus kub siab, thiab nws cov coefficient sib txhuam qis heev, yog li nws tuaj yeem siv ua txoj hauv kev ntawm lubrication, thiab nws kuj tau dhau los ua ib txheej zoo tagnrho rau txheej sab hauv ntawm cov lauj kaub tsis lo thiab cov kav dej.

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Cov khoom siv no feem ntau yog siv rau cov khoom hauv qab no:

PTFE, FEP, PFA, ETFE, AF, NXT, FFR.

PTFE: PTFE (polytetrafluoroethylene) txheej uas tsis lo rau siv tau tas li ntawm 260°C, nrog qhov kub siab tshaj plaws ntawm 290-300°C, coefficient sib txhuam tsawg heev, tsis kam hnav zoo thiab ruaj khov tshuaj lom neeg zoo heev.

FEP: FEP (fluorinated ethylene propylene copolymer) txheej tsis lo rau yaj thiab ntws los ua ib zaj duab xis tsis muaj qhov thaum ci. Nws muaj kev ruaj khov tshuaj lom neeg zoo heev thiab cov yam ntxwv zoo heev uas tsis lo. Qhov kub siab tshaj plaws siv yog 200℃.

PFA: PFA (perfluoroalkyl compound) txheej tsis lo thaum lub sijhawm ci kom tsim cov zaj duab xis tsis muaj qhov zoo li FEP. Qhov zoo ntawm PFA yog tias nws muaj qhov kub siv tas mus li ntawm 260°C, muaj zog dua thiab tawv dua, thiab tshwj xeeb tshaj yog rau kev siv rau hauv kev tiv thaiv kev nplaum thiab tshuaj lom neeg tsis kam rau hauv qab qhov kub siab.

PTFE (Polytetrafluoroethene) yog cov khoom siv polymer hluavtaws uas siv fluorine los hloov tag nrho cov hydrogen atoms hauv polyethylene. Cov khoom no tiv taus cov kua qaub, alkalis, thiab ntau yam organic solvents, thiab yuav luag tsis yaj hauv txhua cov kuab tshuaj. Tib lub sijhawm, ptfe raj muaj cov yam ntxwv ntawm kev tiv taus kub siab, thiab nws cov coefficient sib txhuam qis heev, yog li nws tuaj yeem siv rau kev lubrication, thiab nws kuj tau dhau los ua ib txheej zoo tagnrho rau cov woks thiab cov kav dej yooj yim-rau-ntxuav. Nws tuaj yeem siv rau kev tiv thaiv corrosion ntawm cov kav dej, kev tiv thaiv kub siab thiab qis, thiab kev tiv thaiv corrosion. Siv rau hauv cov chaw ib puag ncig hnyav xws li lubrication, engineering, electronics, cov khoom siv hluav taws xob, thiab aviation.

Cov yam ntxwv ntawm cov khoom

1, Kev tiv taus kub thiab qis: me ntsis cuam tshuam rau qhov kub thiab txias, ntau qhov kub thiab txias, siv tau kub -65 ~ 260 ℃.

2. Tsis nplaum: Yuav luag txhua yam khoom tsis sib txuas nrog PTFE zaj duab xis. Cov zaj duab xis nyias heev kuj qhia tau tias muaj kev ua haujlwm zoo tsis cuam tshuam. 2. Tiv taus cua sov: PTFE txheej zaj duab xis muaj kev tiv taus cua sov zoo heev thiab tiv taus kub tsawg. Nws tuaj yeem tiv taus kub siab txog li 300 ° C hauv lub sijhawm luv luv, thiab feem ntau tuaj yeem siv tas mus li ntawm 240 ° C thiab 260 ° C. Nws muaj kev ruaj khov thermal tseem ceeb. Nws tuaj yeem ua haujlwm ntawm qhov kub khov yam tsis muaj embrittlement thiab tsis yaj ntawm qhov kub siab.

3, Kev txav mus los: PTFE txheej zaj duab xis muaj cov coefficient ntawm kev sib txhuam ntau dua. Cov coefficient kev sib txhuam hloov pauv thaum lub thauj khoom txav mus los, tab sis tus nqi tsuas yog nyob nruab nrab ntawm 0.05-0.15.

4, Kev tiv thaiv dej noo: Qhov saum npoo ntawm PTFE txheej zaj duab xis tsis lo rau dej thiab roj, thiab nws tsis yooj yim lo rau cov tshuaj thaum lub sijhawm ua haujlwm ntau lawm. Yog tias muaj me ntsis av, tsuas yog so nws tawm. Lub sijhawm luv luv pov tseg, txuag sijhawm ua haujlwm thiab txhim kho kev ua haujlwm zoo.

5, Kev tiv thaiv kev hnav: Nws muaj kev tiv thaiv kev hnav zoo heev nyob rau hauv qhov hnyav siab. Nyob rau hauv qee qhov kev thauj khoom, nws muaj ob qhov zoo ntawm kev tiv thaiv kev hnav thiab tsis cuam tshuam.

6, Kev tiv thaiv xeb: PTFE tsis tshua muaj tshuaj lom neeg xeb, thiab tuaj yeem tiv taus txhua yam kua qaub muaj zog (xws li aqua regia) thiab cov tshuaj oxidants muaj zog tshwj tsis yog cov hlau alkali molten, fluorinated media thiab sodium hydroxide saum 300 ° C. Lub luag haujlwm ntawm cov neeg sawv cev txo qis thiab ntau yam organic solvents tuaj yeem tiv thaiv cov khoom los ntawm txhua yam tshuaj xeb.

cov khoom siv tshuaj lom neeg

1, Kev rwb thaiv tsev: Tsis cuam tshuam los ntawm ib puag ncig thiab zaus, qhov ntim tsis kam tuaj yeem ncav cuag 1018 ohm · cm, qhov poob dielectric me me, thiab qhov hluav taws xob tawg yog siab.

2, Kev tiv taus kub thiab qis: me ntsis cuam tshuam rau qhov kub thiab txias, ntau qhov kub thiab txias, siv tau kub -190 ~ 260 ℃.

3, Self-lubricating: Nws muaj qhov coefficient tsawg tshaj plaws ntawm kev sib txhuam ntawm cov yas thiab yog cov khoom siv roj zoo tagnrho.

4, Qhov chaw tsis nplaum: cov ntaub ntawv khov kho uas paub tias tsis tuaj yeem lo rau ntawm qhov chaw, nws yog cov khoom khov kho nrog lub zog me tshaj plaws.

5, Kev tiv thaiv huab cua, kev tiv thaiv hluav taws xob thiab kev nkag mus tsawg: kev raug rau huab cua ntev, qhov chaw thiab kev ua tau zoo tseem tsis hloov pauv.

6, Kev tsis kub hnyiab: Cov pa oxygen txwv tsis pub tshaj 90.

7, PTFE siv dav hauv kev lag luam uas xav tau kev tiv taus kub thiab viscosity siab. Cov kua qaub super acid-fluoroantimonic muaj zog tshaj plaws kuj siv tau rau kev khaws cia.

Thaj chaw thov khoom

Polytetrafluoroethylene tuaj yeem tsim los ntawm kev thawb lossis extruding; nws kuj tuaj yeem ua rau hauv zaj duab xis thiab tom qab ntawd txiav rau hauv daim kab xev PTFE uas tau teeb tsa rau ntawm lub ncej thaum siv rau hauv cov xov hlau kub siab. Nws yog siv los tsim cov xov hlau zaus siab thiab ncaj qha ua rau hauv dej dispersion. Nws tuaj yeem siv rau txheej, impregnation lossis ua fiber.

Polytetrafluoroethylene siv dav hauv kev lag luam xws li lub zog nuclear, kev tiv thaiv lub teb chaws, aerospace, electronics, hluav taws xob, tshuaj lom neeg, tshuab, twj paj nruag, meters, kev tsim kho, textiles, kev kho qhov chaw hlau, tshuaj, kev kho mob, khoom noj, metallurgy thiab smelting, thiab lwm yam. Cov ntaub ntawv corrosive, cov ntaub ntawv insulating, cov tshuaj pleev xim tiv thaiv, thiab lwm yam ua rau nws yog cov khoom tsis tuaj yeem hloov pauv.

PTFE hosemuaj cov khoom zoo heev, tiv taus kub, tiv taus corrosion, tsis lo, lubricating tus kheej, dielectric zoo heev, thiab coefficient sib txhuam qis heev. Siv ua engineering plastics, nws tuaj yeem ua rau PTFE raj, rods, siv, phaj, zaj duab xis, thiab lwm yam. Feem ntau siv rau hauv cov kav dej tiv taus corrosion, thawv, twj tso kua mis, li qub, radar, cov khoom siv sib txuas lus zaus siab, cov khoom siv xov tooj cua, radomes, thiab lwm yam nrog kev ua tau zoo. Ntxiv cov khoom sau uas tuaj yeem tiv taus qhov kub sintering ntawm polytetrafluoroethylene, nws cov khoom siv kho tshuab tuaj yeem txhim kho zoo heev. Tib lub sijhawm, lwm yam khoom zoo heev ntawm PTFE raug tswj hwm. Cov khoom sau suav nrog iav fiber, hlau, hlau oxide, graphite, molybdenum disulfide, carbon fiber, polyimide, EKONOL, thiab lwm yam. Qhov kev tiv taus hnav thiab txwv PV tus nqi tuaj yeem nce ntxiv 1000 zaug.