Dab tsi yog qhov txawv ntawm PTFE, FEP thiab PFA?

PTFE thiab PFA muaj qhov ua siab ntev ntev hauv kev sib piv rau FEP.FEP thiab PFA yog qhov tseeb, tab sis PTFE yog translucent.FEP thiab PFA muaj cov cuab yeej zoo dua qub hauv kev sib piv rau PTFE.Qhov sib txawv tseem ceeb yog hais txog tshuaj inertness, corrosion kuj, permeability, thiab FDA pom zoo.

Tam sim no muaj ntau hom fluoropolymers thiab txhua tus muaj lub hom phiaj sib txawv.Qhov sib txawv me ntsis hauv cov qauv ntawm PTFE, FEP thiab PFA txhua qhov muaj qhov sib txawv uas muab ntau yam ntawm cov khoom tsis-stick.

PTFE

Polytetrafluoroethylene, los yog PTFE, yog thawj zaug ntawm cov hluavtaws fluoropolymer tsim.Tej zaum koj yuav paub nws lub npe nrov tshaj plaws, polymer, uas yog tsim los ntawm lub tuam txhab DuPont.

PTFE yog qhov zoo rau kev tsim cov khoom tsis yog lo lo rau ntawm cov khoom siv rau kev ua noj thiab ci. Cov mos txwv thiab cov plua plav sau cov kab ke kuj siv PTFE.Nws yog hydrophobic, kua yuav tsis ntub PTFE vim nws muaj lub siab electronegativity.PTFE tsuas yog paub qhov chaw. ib tug gecko tsis tuaj yeem lo.

FEP

Fluorinated ethylene propylene, los yog FEP, yog qhov txawv me ntsis rau PTFE, txawm hais tias nws tseem muaj qee qhov tsis zoo ntawm cov polymer.

FEP yog softer dua PTFE thiab melts ntawm ib tug qis kub yog li ci thiab ua noj siv tsis zoo li.FEP yog heev pob tshab, yog li txawm nws npog yuav nyob twj ywm tib xim.FEP yog resistant rau tshav ntuj, yog li nws yog zoo rau tag nrho cov huab cua daim ntawv thov.

PFA

Qhov sib txawv tseem ceeb ntawm perfluoroalkoxy alkanes, PFA, thiab PTFE yog cov khoom siv alkoxy uas tso cai rau cov polymer kom yaj-ua tiav.

Ntawm qib molecular, PFA muaj cov saw me me ntev rau lwm cov fluoropolymer.Nws kuj muaj cov saw hlau ntau dua li lwm cov fluoropolymers.PFA muaj cov pa atom hauv nws cov qauv.Lwm qhov ob tsis muaj qhov no.Qhov sib txawv ntawm cov qauv no muab PFA txhim kho ntws, nkag tsis kam thiab thermal stability.

PS: Tiv tauj peb rau PTFE cov khoom tiav cov qauv dawb