Thaum tshawb nrhiav cov ntaub zoo tshaj plaws rau cov lim plua plav, ob yam khoom tau txais kev saib xyuas zoo rau lawv qhov kev ua tau zoo tshwj xeeb: PTFE (Polytetrafluoroethylene) thiab nws daim ntawv nthuav dav, ePTFE (Expanded Polytetrafluoroethylene). Cov ntaub ntawv tsim no, paub txog lawv cov khoom siv tshuaj lom neeg thiab lub cev tshwj xeeb, tau txhais cov kev lim plua plav dua tshiab hauv cov chaw nyuaj, muab cov txiaj ntsig uas ua rau lawv sib txawv ntawm cov ntaub ib txwm muaj xws li paj rwb, polyester, lossis txawm tias cov ntaub ntawv HEPA txheem.
PTFE, feem ntau hu ua Teflon, yog ib hom fluoropolymer uas nto moo rau nws cov khoom tsis lo, tiv taus tshuaj lom neeg, thiab tiv taus kub siab. Hauv nws daim ntawv nyoos, PTFE yog cov khoom siv ntom ntom, khov kho, tab sis thaum tsim los rau hauv cov ntaub lim dej, nws tsim cov nplaim du, tsis sib txhuam uas tiv thaiv cov hmoov av, kua, thiab cov pa phem. Qhov zoo tsis nplaum no yog qhov tseem ceeb rau kev lim hmoov av: tsis zoo li cov ntaub nthwv dej uas ntes cov khoom me me tob hauv lawv cov fibers (ua rau txhaws),PTFE lim dejcia cov hmoov av sib sau ua ke rau ntawm qhov chaw, ua rau nws yooj yim dua los ntxuav lossis co tawm. Qhov "kev thauj khoom ntawm qhov chaw" no ua kom muaj huab cua sib xws dhau sijhawm, qhov zoo tseem ceeb hauv cov chaw muaj hmoov av ntau xws li cov chaw tsim kho lossis cov chaw tsim khoom.
ePTFE, tsim los ntawm kev ncab PTFE los tsim cov qauv porous, coj kev ua haujlwm lim dej mus rau qib tom ntej. Cov txheej txheem nthuav dav tsim cov network ntawm cov qhov me me me (feem ntau ntawm 0.1 thiab 10 microns) thaum tswj hwm PTFE cov khoom muaj nqis. Cov qhov no ua haujlwm ua lub lim dej meej: lawv thaiv cov hmoov av me me - suav nrog cov khoom me me (PM2.5) thiab txawm tias cov khoom me me hauv qab micron - thaum tso cai rau huab cua hla dhau yam tsis muaj kev cuam tshuam. ePTFE qhov porosity yog customizable heev, ua rau nws haum rau cov ntawv thov xws li cov tshuab lim cua hauv tsev (lim cov plaub tsiaj thiab paj ntoos) mus rau chav huv hauv kev lag luam (ntes cov khoom tsim khoom ultrafine).
Ib qho ntawm cov txiaj ntsig tseem ceeb tshaj plaws ntawm PTFE thiab ePTFE yog lawv lub zog thiab tiv taus rau cov xwm txheej hnyav. Tsis zoo li paj rwb lossis polyester, uas tuaj yeem lwj thaum raug tshuaj lom neeg, dej noo, lossis kub siab, PTFE thiab ePTFE tsis muaj zog rau feem ntau cov tshuaj, suav nrog cov kua qaub thiab cov kuab tshuaj. Lawv tuaj yeem tiv taus qhov kub ntawm -200 ° C txog 260 ° C (-328 ° F txog 500 ° F), ua rau lawv zoo tagnrho rau kev siv hauv cov cub tawg, cov tshuab tso pa tawm, lossis cov chaw sab nraum zoov uas cov lim dej raug rau huab cua hnyav. Qhov kev ua siab ntev no txhais tau tias lub neej ntev dua - PTFE thiab ePTFE lim dej tuaj yeem kav ntev lub hlis lossis txawm tias xyoo nrog kev saib xyuas zoo, ua tau zoo dua li lwm txoj hauv kev pov tseg xws li ntawv lossis cov lim dej hluavtaws yooj yim.
Lwm qhov zoo dua yog lawv tsis tas yuav tsum tau saib xyuas ntau. Ua tsaug rau PTFE qhov chaw uas tsis lo, cov hmoov av tsis lo rau cov khoom siv lim. Feem ntau, tsuas yog co lub lim lossis siv cua compressed xwb txaus los tshem tawm cov hmoov av uas tau sib sau ua ke, rov qab ua haujlwm tau zoo. Qhov kev siv rov qab no tsis yog tsuas yog txo cov khib nyiab xwb tab sis kuj txo cov nqi mus sij hawm ntev piv rau cov lim dej siv ib zaug xwb. Piv txwv li, hauv cov tshuab nqus tsev hauv kev lag luam, cov lim dej ePTFE tuaj yeem ntxuav tau ntau zaus ua ntej yuav tsum tau hloov, txo cov nqi khiav lag luam.
Thaum piv rau cov lim dej HEPA—uas tau suav tias yog tus qauv kub rau kev lim cov khoom me me—ePTFE tuav nws tus kheej. Thaum cov lim dej HEPA ntes tau 99.97% ntawm cov khoom me me 0.3-micron, cov lim dej ePTFE zoo tuaj yeem ua tiav cov qib ua haujlwm zoo sib xws lossis siab dua. Tsis tas li ntawd, ePTFE cov cua zoo dua (vim nws cov qauv pore zoo tshaj plaws) txo qhov kev ntxhov siab ntawm cov kiv cua, ua rau nws siv hluav taws xob ntau dua li HEPA hauv ntau daim ntawv thov.
Xaus lus, PTFE thiab ePTFE sawv tawm ua cov ntaub zoo tshaj plaws rau cov lim plua plav. Lawv qhov kev sib xyaw ua ke ntawm kev tiv taus tshuaj lom neeg, kev kam rau qhov kub thiab txias, kev hloov kho porosity, thiab kev siv rov qab ua rau lawv muaj ntau yam txaus rau kev siv txhua hnub thiab kev lag luam. Txawm hais tias nyob rau hauv daim ntawv ntawm ib qho PTFE tsis lo rau kev sau plua plav hnyav lossis ib daim nyias nyias ePTFE nthuav dav rau kev lim cov khoom me me, cov ntaub ntawv no muab kev daws teeb meem txhim khu kev qha, kav ntev rau kev ua kom huab cua tsis muaj plua plav thiab cov pa phem. Rau cov neeg nrhiav lub lim dej uas sib npaug kev ua haujlwm zoo, kev ruaj khov, thiab kev siv nyiaj tsim nyog, PTFE thiab ePTFE yog qhov tsis ntseeg ntawm cov kev xaiv zoo tshaj plaws muaj.
Lub sijhawm tshaj tawm: Lub Yim Hli-14-2025