1. Ua TFE
2.Suspension Polymerization
3.Dispersion polymerization
Ua TFE
1 Manufacturers ntawm PTFE pib los ntawm synthesizing TFE.Peb cov khoom xyaw ntawm TFE, fluorspar, hydrofluoric acid, thiab chloroform yog sib xyaw ua ke hauv cov tshuaj lom neeg cov tshuaj tiv thaiv chamber rhuab mus rau ntawm 1094-1652 ° F (590-900 ° C).Tom qab ntawd cov roj resultant yog txias, thiab distilled kom tshem tawm tej impurities.
Suspension Polymerization
2 Cov tshuaj tiv thaiv chamber yog ntim nrog cov dej huv thiab cov tshuaj tiv thaiv los yog cov neeg pib, cov tshuaj uas yuav tsim tawm ntawm cov polymer.Cov kua TFE yog piped rau hauv cov tshuaj tiv thaiv chamber.Raws li TFE ua tau raws li tus neeg pib, nws pib polymerize.Qhov tshwm sim PTFE tsim cov khoom nplej uas ntab mus rau saum npoo dej.Raws li qhov no tshwm sim, cov tshuaj tiv thaiv chamber yog mechanically shaken.Cov tshuaj tiv thaiv nyob rau hauv lub chamber muab tawm cua sov, yog li lub chamber yog txias los ntawm cov dej txias los yog lwm yam coolant nyob rau hauv ib lub tsho nyob ib ncig ntawm nws sab nraud.Tswj tau kaw cov khoom ntawm TFE tom qab ib qho hnyav hauv chamber mus txog.Cov dej yog drained tawm ntawm lub chamber, tawm hauv ib tug mess ntawm stringy PTFE uas zoo li me ntsis grated txiv maj phaub.
3 Tom ntej no, PTFE qhuav thiab muab tso rau hauv ib lub zeb.Lub zeb pulverizes lub PTFE nrog rotating hniav, ua ib cov khoom uas muaj xws li cov nplej hmoov nplej.Cov hmoov zoo no nyuaj rau pwm.Nws muaj "dhau tsis zoo," txhais tau tias nws tsis tuaj yeem ua tau yooj yim hauv cov khoom siv tsis siv neeg.Zoo li cov hmoov nplej uas tsis muaj sifted, nws yuav muaj ob lub pob thiab cov hnab ntim cua.Yog li cov tuam ntxhab hloov cov hmoov zoo no rau hauv cov granules loj los ntawm cov txheej txheem hu ua agglomeration.Qhov no tuaj yeem ua tau ntau txoj hauv kev.Ib txoj hauv kev yog sib tov cov hmoov PTFE nrog cov kuab tshuaj xws li acetone thiab muab tso rau hauv lub nruas rotating.Cov PTFE nplej nplaum ua ke, tsim cov pellets me me.Tom qab ntawd cov pellets yog qhuav hauv qhov cub.
4 Cov PTFE pellets tuaj yeem raug molded rau hauv qhov chaw siv ntau yam txuj ci.Txawm li cas los xij, PTFE tej zaum yuav raug muag nyob rau hauv ib qho uas twb ua ntej molded rau hauv thiaj li hu ua billets, uas yog cov thooj voos kheej kheej ntawm PTFE.Cov pob zeb yuav yog 5 ft (1.5 m) siab.Cov no tuaj yeem txiav rau hauv cov ntawv los yog cov ntawv me me, rau kev molding ntxiv.Txhawm rau tsim cov pob zeb, PTFE pellets yog nchuav rau hauv lub cylindrical stainless hlau pwm.Cov pwm yog loaded rau hauv hydraulic xovxwm, uas yog ib yam dab tsi zoo li lub txee loj nruab nrog hnyav ram.Lub ram poob rau hauv pwm thiab tawm dag zog ntawm PTFE.Tom qab qee lub sijhawm, cov pwm raug tshem tawm ntawm cov xovxwm thiab PTFE yog unmolded.Nws raug tso cai so, tom qab ntawd muab tso rau hauv qhov cub rau ib kauj ruam kawg hu ua sintering.
5 Lub molded PTFE yog rhuab nyob rau hauv qhov cub sintering rau ob peb teev, kom txog thaum nws maj mam nce mus txog qhov kub ntawm ib ncig ntawm 680 ° F (360 ° C).Qhov no yog saum toj no lub melting point ntawm PTFE.Lub PTFE hais coalesce thiab cov khoom ua gel zoo li.Tom qab ntawd lub PTFE yog maj mam txias.Cov pob zeb tiav tuaj yeem xa mus rau cov neeg siv khoom, leej twg yuav hlais lossis chais nws rau hauv me me, rau kev ua haujlwm ntxiv.
Dispersion polymerization
6 Polymerization ntawm PTFE los ntawm txoj kev dispersion ua rau cov hmoov zoo los yog cov khoom zoo li paste, uas muaj txiaj ntsig zoo rau cov txheej txheej thiab ua tiav.TFE tau nkag mus rau hauv lub reactor uas muaj dej nrog rau cov tshuaj pib.Es tsis txhob muaj zog shaken, raws li nyob rau hauv cov txheej txheem ncua kev kawm ntawv, cov tshuaj tiv thaiv chamber tsuas yog agitated maj mam.PTFE ua rau cov hlaws me me.Qee cov dej raug tshem tawm, los ntawm kev lim lossis los ntawm kev ntxiv cov tshuaj uas ua rau cov hlaws PTFE tuaj yeem kho.Qhov tshwm sim yog ib yam khoom mis nyuj hu ua PTFE dispersion.Nws tuaj yeem siv ua kua, tshwj xeeb tshaj yog nyob rau hauv daim ntawv thov xws li ntaub tiav.Los yog nws yuav qhuav rau hauv cov hmoov zoo siv los pleev xim hlau
Post lub sij hawm: Jan-19-2019