Thaum koj tsim cov khoom tshwj xeeb, ib qho ntawm cov teeb meem loj tshaj plaws nyob rau hauv kev ua kom cov neeg siv kawg paub txog qhov zoo ntawm qhov zoo ib yam. Qhov no yog qhov tseeb tshwj xeeb tshaj yog thaum muaj cov khoom siv pheej yig dua uas sib piv nrog koj cov khoom muag pom, hais tias tus neeg siv kawg yuav muaj kev tsis ntseeg txog seb koj puas muag nws tshwj xeeb, lossis seb koj puas tsuas them tus nqi tshaj ib yam khoom.
Expanded PTFE (ePTFE) Daim kab xev yog ib qho tshwj xeeb tshaj plaws ntawm PTFE. Lawv cov kev siv mus los ntawm daim ntawv thov gasket yooj yim, tag nrho txoj kev mus rau intricate membranes rau siv nyob rau hauv high-end pom thiab kho mob daim nyias nyias. Txawm li cas los xij, qhov zoo sib xws ntawm ePTFE Daim Kab Xev thiab Thread Sealant Tapes (tseem hu ua: Plumber's Tape), qee zaum tuaj yeem cuam tshuam cov neeg siv khoom, uas yuav nug seb lawv tsis yog ib qho thiab tib yam.
Thread Sealant PTFE Daim kab xev yog ib qho khoom siv PTFE daim kab xev uas pheej yig heev muaj nyob hauv yuav luag txhua lub khw muag khoom kho vajtse. Raws li nws lub npe qhia, nws yog tsuas yog siv nyob rau hauv cov kav dej, qhov twg nws yog qhwv ib ncig ntawm lub threads ntawm ib tug yeeb nkab, ua ntej ib tug mating yeeb nkab yog nruj nreem kaw. Lub peev xwm ntawm daim kab xev kom yooj yim nqa cov duab ntawm cov xov uas twb muaj lawm txhais tau hais tias nws tsim kom nruj haum, yog li tiv thaiv cov dej to. Plumber's Daim kab xev yog cov khoom siv tau zoo hauv nws daim ntawv thov. Txawm li cas los xij, nws muaj kev txwv loj thaum piv nrog nthuav PTFE (ePTFE) Daim kab xev.
Qhov sib txawv hauv kev tsim khoom
Muaj ntau qhov sib txawv tseem ceeb hauv kev tsim khoom. Xov Sealant Daim kab xev yog tsim los ntawm extruding ib tug hlaws ntawm PTFE, uas yog ces dhau los ntawm ntau yam calendaring, slitting thiab spooling ua hauj lwm. Qhov kawg tshwm sim yog unsintered PTFE daim kab xev nrog ib tug tuab ntawm ~0.075mm (75µm). Sintering yog txheej txheem uas PTFE kho tau ntawm qhov kub thiab txias kom nws ua tiav nws cov khoom kawg. Unsintered PTFE daim kab xev yog qhov tseem ceeb tseem 'cov khoom siv' uas tau raug kos thiab flattened rau hauv daim kab xev.
Expanded PTFE (ePTFE) Daim kab xev kuj yog ua los ntawm thawj extruding daim kab xev. Txawm li cas los xij, daim kab xev no yog muab tso rau hauv cov txheej txheem ziab, tom qab ntawd nws dhau los ntawm lub tshuab ncab ntawm qhov kub siab. Cov txheej txheem ncab yuav tsum tau tswj hwm CNC txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm Cov ntaub nplaum uas tshwm sim feem ntau yuav muaj qhov tuab ntawm 0.25mm txog 15mm
Qhov tseeb tias Xov Sealant Daim Kab Xev yog daim ntawv teev npe, tsis muaj daim kab xev, thaum ePTFE Daim kab xev mus los ntawm kev ncab thiab cua sov yog vim li cas cov kab xev nthuav tawm cov khoom sib txawv. Qhov tseeb, qhov ceev ceev uas ePTFE daim kab xev yog stretched thiab rhuab txhais tau hais tias nws ib yam nkaus thiab tsis yog dab tsi yuav hu ua 'tag nrho sintered'. Txawm li cas los xij, cov txheej txheem ncab txhob txwm tsis kho PTFE saum toj no nws cov ntsiab lus melting thiaj li yuav xyuas kom meej tias qee yam khoom raug khaws cia.
Qhov sib txawv ntawm Cov Khoom Kawg
Raws li tau hais los saum no, lub hom phiaj tseem ceeb ntawm Plumber's Daim Kab Xev (PTFE xov foob daim kab xev) yog kaw cov xau hauv cov kav dej. Cov khoom siv PTFE unsintered yog mos thiab yooj yim siv cov duab ntawm cov xov uas nws tau qhwv ib ncig.
Hauv qhov sib piv, ePTFE daim kab xev nthuav tawm ntau yam khoom, ntxiv rau kev sib khi, uas ua rau lawv tseem ceeb hauv ntau qhov kev lag luam. Txhawm rau pib nrog, raws li cov khoom sib khi, ePTFE yog siv rau hauv thaj chaw uas koj tsis tsuas yog yuav tsum muaj lub foob, tab sis qhov twg lub foob yuav tsum muaj peev xwm ua kom muaj kev kub ntxhov (txog 100Bar), kub siab (txog 250 degree), thiab yuav tiv taus ntau yam tshuaj corrosive. Sim siv cov xov Sealant daim kab xev yooj yim nyob rau hauv qhov xav tau ib puag ncig yuav ua rau daim kab xev degrade yuav luag tam sim ntawd, vim nws tsis muaj lub zog txhua yam los tiv thaiv tib yam.
Expanded PTFE (ePTFE) kuj muaj dielectric zog. Cov kab xev tuaj yeem tiv taus ntau theem ntawm qhov hluav taws xob thiab siv nyob rau hauv high-end cable wrapping los txhim kho efficiency thiab rwb thaiv tsev. Ib zaug ntxiv, qee cov tuam txhab lag luam tau sim siv Xov Tooj Sealant Daim Kab Xev los qhwv ib ncig ntawm cov cables, tom qab ntawd cov cables raug sintered kom fuse daim kab xev. Txawm li cas los xij, qhov tshwm sim ntawm cov kab hluav taws xob muaj qhov muaj peev xwm qis dua thiab tuaj yeem ua tsis tiav hauv kev siv ntau dua.
Thaum kawg, nthuav PTFE (ePTFE) nthuav tawm micro porosity. Cov txheej txheem calendering siv hauv kev ua Xov Tooj Sealant Tapes kom ntseeg tau tias tsis muaj qhov pores hauv cov khoom. Txawm li cas los xij, vim tias ePTFE yog ncab hauv qhov kub thiab txias, nws muaj qib ntawm porosity. Qhov tshwj xeeb tshaj plaws, ePTFE nthuav tawm cov khoom siv hydrophobic thiab oleophobic, txhais tau tias nws rov qab dej thiab roj raws li. Nyob rau tib lub sijhawm, cov khoom siv yuav tso cai rau kev nkag mus ntawm vapors. Cov yam ntxwv tshwj xeeb no ua rau nws yog cov khoom siv tsis muaj nuj nqis hauv kev siv cua tshuab thiab lim. Nws kuj tso cai rau ePTFE Membranes los nrhiav kev siv los ua grafts thiab stents rau kev siv hauv kev kho mob kev lag luam.
Kev sib xyaw ua ke ntawm cov khoom no ua kom ntseeg tau tias ePTFE xav tau tsis yog hauv cov kua dej sib khi nkaus xwb, tab sis hauv kev pom, kev kho mob, hluav taws xob hnyav, tshuaj nroj tsuag thiab txawm tias kev siv aerospace.
Thaum koj xav txog cov ntsiab lus saum toj no, nws yooj yim pom tias ePTFE Daim Kab Xev thiab Xov Sealant tapes yog ntiaj teb sib nrug ntawm lawv cov txiaj ntsig thiab lawv qhov dav ntawm daim ntawv thov. Txawm li cas los xij, nws yuav tsum raug sau tseg tias ntau daim ntawv thov yog qhov yooj yim txaus uas siv Xov Sealant Tapes yuav txaus. Kev lag luam hais lus, ePTFE yuav raug nqi ntau ntau ntawm qhov yooj yim Thread Sealant Daim kab xev nqi. Li no, qhov kev txiav txim siab siv ePTFE so ntawm qhov kawg daim ntawv thov nws tus kheej thiab seb puas yuav tsum tau cov khoom ntawm cov khoom yuav tsum tau txuas mus rau siab npaum li cas nthuav PTFE muaj.
