PTFE puas tuaj yeem siv tau?

PTFE (Polytetrafluoroethylene) plastics feem ntau yog opaque, thiab yog ib qho kev tiv thaiv zoo heev rau cov roj, noo noo, thiab tiv thaiv tshav kub.PTFEqhia tau hais tias muaj tshuaj lom neeg zoo kawg li thiab nws yog insoluble nyob rau hauv tag nrho cov paub cov kuab tshuaj.Nws tsuas yog tawm tsam los ntawm molten alkali hlau thiab fluorine ntawm qhov kub thiab txias.PTFE muaj kev tiv thaiv zoo rau cov kua qaub, alkalis thiab cov kuab tshuaj.Nws yog lubricous heev, nrog rau qis tshaj coefficient ntawm tej polymer.Cov chemically inert yas yog ib qho yooj yim los ntxuav thiab muaj qhov tshwj xeeb txhua yam ua haujlwm nyob rau hauv huab cua.Tsis tas li ntawd, PTFE yog autoclavable thiab tsis-flammable.

PTFE tsis muaj nws tus kheej ubno code cim.Txawm li cas los xij, PTFE tuaj yeem siv rau hauv ntau lwm yam khoom.Recycled PTFE tuaj yeem siv rau rods, tubing, daim kab xev thiab lwm yam.

Polytetrafluoroethylene (PTFE) yog cov khoom siv hluavtaws uas tau tsim nyob rau xyoo 1930s lig.Nws yog thaum tus kws kho mob tau sim tsim ib hom tshiab ntawm perfluorethylene-based refrigerant.Ntau dua li ua tiav cov chlorofluorocarbon, tus kws tshawb fawb pom tias cov perfluorethylene siv hauv cov txheej txheem reacted nrog cov ntsiab lus hlau ntawm nws lub thawv thiab polymerized nyob rau hauv siab.

Cov khoom siv tshiab no tau muab faib rau hauv kev lag luam teev thiab nws thiaj li hu ua PTFE.Tom qab ob peb xyoos tom qab ntawd, nws tau raug hu ua thawj cov khoom siv hauv chav ua noj.

PTFE siv qhov twg?

Nws yog siv rau cov ntaub ntawv uas yuav tsum tau zawv zawg qhov chaw xws li dawb bearings, zog, thiab swb daim hlau.Powdered PTFE yog siv nyob rau hauv pyrotechnic compositions li oxidizers ua ke nrog hmoov hlau.PTFE kuj siv nyob rau hauv optical radiometry.Cov ntawv ua los ntawm PTFE yog siv los ntsuas lub taub hau hauv spectroradiometers thiab broadband radiometers vim tias nws muaj peev xwm nthuav tawm lub teeb xa mus ze li ntawm. Cov khoom siv hnyav dua.Nws kuj tseem siv cov khoom siv kuaj xws li ntim, stirrers, thiab tubing.Nws yog siv los ua cov xov foob kab xev hauv cov kav dej.

Vim li cas PTFE siv hauv cov khoom siv hluav taws xob?

PTFE muaj cov khoom tshwj xeeb insulating uas ua rau nws zoo tagnrho rau cov khoom siv hluav taws xob.Nws yog non-conductive, lub ntsiab lus;nws yog resistant rau high hluav taws xob teb.Nws kuj tseem tiv taus cua sov, dej, thiab tshuaj lom neeg corrosion.Nws kuj yog siv los tsim cov khoom siv hauv chav kuaj thiab cov khoom siv uas tuaj yeem tiv nrog hydrofluoric acid.

PTFE muaj cov cuab yeej frictional tsawg heev.Qhov no ua rau PTFE haum rau kev tsim khoom uas yuav tsum tau tiv thaiv kev sib txhuam zoo li pob bearings thiab lub zog.

Lwm yam ntxwv ntawm PTFE

• * ib qho kev thaiv zoo heev rau roj, noo noo thiab cua sov
• *muaj tshuaj lom neeg zoo kawg li thiab yog insoluble nyob rau hauv tag nrho cov paub cov kuab tshuaj
• *tawm tsam tsuas yog molten alkali hlau thiab fluorine ntawm qhov kub thiab txias
• *Nws muaj kev tiv thaiv zoo rau cov kua qaub, alkali thiab cov kuab tshuaj
• *lubricous heev
• *tuaj yeem ua kom tsis muaj menyuam los ntawm autoclave, roj, cua sov qhuav thiab tshuaj tua kab mob
• *Qhov tsis zoo ntawm kev siv PTFE

Ib qho ntawm feem ntau siv PTFE yog rau cookware.PTFE pans tsis tuaj yeem siv yog tias koj pom khawb lossis tawg ntawm nws.Nws tsis tuaj yeem siv tom qab nws deteriorates.Nws pib deteriorate tom qab qhov kub ntawm lub cookware nce mus txog 260 ˚C thiab decomposes saum 350˚C.Cov khoom degradation no tuaj yeem ua rau tuag taus rau cov noog thiab tuaj yeem ua rau mob khaub thuas zoo li tib neeg.

Cov teeb meem hauv kev rov ua dua PTFE

Zoo li lwm yam khoom siv, kev rov ua dua tshiab txo cov khoom ntawm cov khoom qub.Hauv PTFE, ntau yam ntawm nws cov khoom yog qhov zoo uas nws tseem ua tau tom qab rov ua dua.Hauv qee qhov kev tshawb fawb, 5-10% ration tseem yuav tso cai rau cov khoom kom dhau los ua PTFE ntshiab.Ib qho ntawm cov teeb meem tseem ceeb nrog PTFE rov ua dua yog tias nws tsis siv rau kev siv ntev.

Tab sis, kom suav tag nrho, PTFE rov ua dua yuav ib txwm muaj cov khoom tsis zoo rau PTFE thiab tsis tuaj yeem ua raws li lub sijhawm.Nws yog ib txwm zoo dua los cia siab tias nws tuaj yeem raug cuam tshuam thiab hais tias nws yog tus nqi qis dua qhov qub.