Teflon izwi cyane nka polytetrafluoroethylene (icyongereza cyitwa teflon cyangwa [PTFE, F4]), izwi nka / bakunze kwita “umwami wa plastiki”, kandi izwi kandi nka “Teflon”, “Teflon”, “Teflon”, “Teflon”, “Teflon”, “Teflon”, “Teflon”, “Teflon”, “Teflon”, “Teflon”, “Teflon”, “Teflon”, “Teflon”, “Teflon”, “Teflon”, na “Teflon”. Nibikoresho bya polymer bikozwe muri tetrafluoroethylene na polymerisation, kandi imiterere yabyo iroroshye nka - [- cf2-cf2 -] n-.

Polytetrafluoroethylene, ikunze kwitwa igiti kitari inkoni cyangwa byoroshye koza ibikoresho. Ibi bikoresho bifite ibiranga aside na alkali birwanya, birwanya ibinyabuzima bitandukanye, kandi hafi ya byose bidashonga mumashanyarazi yose. Muri icyo gihe, polytetrafluoroethylene ifite ibiranga ubushyuhe bwo hejuru, coefficente yayo yo guterana ni mike cyane, bityo irashobora gukoreshwa mu gusiga amavuta, ariko kandi igahinduka igifuniko cyiza kugirango byoroshye gusukura urwego rwimbere rwimiyoboro y'amazi.

Isahani ya Teflon iterwa ahanini nuburyo ushaka kumenya uburyo bwo gutera. Icy'ingenzi ni uko igifuniko cya Teflon kigomba gutekwa ku bushyuhe bwinshi mbere yuko gikoreshwa.

Ibiranga Teflon:

Kudafatana: Ibintu hafi ya byose ntabwo bihuza na teflon.

Kurwanya ubushyuhe buke: ubukana bwiza bwa mashini; Nubwo ubushyuhe bwamanutse kuri -196 ° C, kuramba 5% birashobora gukomeza. Biracyoroshye kuri dogere -100.

Kurwanya ubushyuhe bwinshi: gutwikira polytetrafluoroethylene bifite ubushyuhe buhebuje kandi birwanya ubushyuhe buke. Irashobora kwihanganira ubushyuhe bwo hejuru kugeza kuri 300 ° C mugihe gito, muri rusange irashobora gukoreshwa ubudahwema hagati ya 240 ° C na 260 ° C, kandi ikagira ubushyuhe bukomeye bwumuriro, irashobora gukora mubushuhe bukonje butiriwe, kandi ntibushonga mubushyuhe bwinshi .

Amavuta menshi: Nibintu byo hasi cyane byo guteranya ibikoresho bikomeye. Ifite coefficient yo hasi cyane yo guterana (0.04) muri plastiki. Byoroheje kuruta urubura.

Kurwanya ubuhehere: hejuru yububiko bwa PTFE ntabwo bwanditseho amazi namavuta, kandi ntabwo byoroshye gukomera kubisubizo mugihe cyo gukora. Niba hari umwanda muke, birashobora gukurwaho no guhanagura gusa. Igihe gito cyo kumanura kibika umwanya kandi kizamura imikorere.

Kwambara birwanya: Ifite imbaraga zo kwambara munsi yumutwaro mwinshi. Munsi yumutwaro runaka, ifite ibyiza bibiri byo kwihanganira kwambara no kudafatana.

Kurwanya ruswa: polytetrafluoroethylene ntaho itaniye kwibasirwa nibiyobyabwenge, kandi irashobora kwihanganira aside yose ikomeye (harimo na aqua aqua), okiside ikomeye, kugabanya imiti hamwe nudukoko twinshi kama hiyongereyeho ibyuma bya alkali byashongeshejwe, itangazamakuru rya fluor na hydroxide ya sodium iri hejuru ya 300 ° C, na irashobora kurinda ibice ubwoko ubwo aribwo bwose bwangirika.

Kurwanya gusaza: kurwanya imirasire no gutembera gake: kumara igihe kinini ikirere, ubuso n'imikorere ntibigihinduka.

Kudashobora gukongoka: igipimo ntarengwa cya ogisijeni kiri munsi ya 90.

Kurwanya Acide na alkali: kudashonga muri acide ikomeye, shingiro rikomeye hamwe na solge organic (harimo acide magic, ni ukuvuga aside fluoroantimonic).

Oxidation irwanya: irwanya ruswa na okiside ikomeye.

Gukwirakwiza: Gukora amashanyarazi meza cyane, nibikoresho byiza bya C-byo kubika ibikoresho, urwego rwikinyamakuru cyimbitse rushobora guhagarika 1500V umuvuduko mwinshi. Gukwirakwiza amashanyarazi ntabwo bigira ingaruka kubushyuhe. Igihombo cya dielectric gihoraho hamwe na dielectric igihombo kiri hasi mumurongo mugari, kandi voltage yo kumeneka, irwanya amajwi hamwe na arc irwanya hejuru.

Acide-ishingiro: kutabogama.