Polytetraflloethylene (PTF) ke khabone le foyorne ea folymer. Lintho tsena li na le lebitso le tsebahalang haholo: Teflon.
Melemo ea PTF e kenyeletsa:
Thepa e ntle haholo ea mochini (<1%)
Ho hanyetsa ka mpeng ea lik'hemik'hale ho loantšana
Ho hanyetsa mocheso mocheso
Li-coefficients tse tlase tsa likhohlano
Thepa e seng ea thupa (e fokotsa lithemparetjha tse phahameng tse phahameng tsa 500 ° C)))
Apara ho hanyetsa
Ntlha e phahameng e qhibilihang
Melemo e metle ea PTFF e e fa likopo tse fapaneng, 'me e sebelisoa hangata e le koluoa e sa koahetsoeng bakeng sa cookware bakeng sa cookware. Ts'oaetso e ntle ea PTFE e e lumella ho kopantsoe le lihlahisoa tse fapaneng ka har'a lisebelisoa tsa indasteri kapa li-mabanta tsa tšebetso, tse kang masela a mangata a thata, jj.
PTF ke eng?
Polytetraflueeethylene Batho ka nako eo ba ne ba ke ke ba nahana ka sehlahisoa sena se tloaelehileng. Mefuta e sa tloaelehang e tla ama likarolo tsohle tsa lefatše.
Ka 1941, dupont e fumane tokelo ea sehlahisoa sena le ho ngolisa letšoao la lebitso la lebitso la lebitso la 'lebitso' ka 1944.
Matsatsing ana, Polystetrafluoethylene e sebelisoa masimong a mangata a tlhahiso le bophelo. Indastering ea mecha ea PtFing, Cook ea Cook ea PTF e sebelisoa haholo; indastering ea liaparo, liaparo tse ngata tse senang boea bo batang bo kang Helikon le Carin , e le ho fihlela bokhoni ba ho mamella serame se matla sa-30 C; lebaleng la sesole, thepa ea PTF e nang le tahlehelo e tlase, thepa e ntle ea lefu le nang le maemo Lefapheng la bongaka, thepa ea PTF e le eona e sebelisoa haholo likarolong tsa 'mele tsa maiketsetso.
PTF e emela eng?
PTF e emetse polytetlattaflueethylene, polelo ea lik'hemik'hale bakeng sa polymer (c2f4) n.
Lingoliloeng tsena ka kakaretso li bua ka fluopolymer ea ptrope ea botsitso. Litšobotsi tsa sehlooho tsa polytetraflueroethylene ke ka tsela e latelang:
Mocheso o sebetsang oa ts'ebetso (° F / ° C): 500/260
Matla a Tenstile ka ho khaola (PSI): 4,000
Diketsetso tsa Diectic (KV / Mil): 3.7
Tekanyo: 2.16
Ho nka nako ea phomolo: 350%
Shore D Harckess: 54
E sebelisoa haholo ptFo Polytetrawylene Fluopolymer Fluopolymer
Teflon®: Chemours
Fluon®: Agc ltd
Dyneon®: 3m
Polyfen: Daikin Indukin Co, Ltd.
Algoflon: Solvay Ltd.
Sebopeho sa lik'hemik'hale tsa PTF
Polytetraflueethylene ke molamu o moleng o na le carbon (c) le forole ea lik'hemik'hale (C2f4) n, C2F4) n, C2F4) n, C2f4)
Sebopeho sa PTF se ka hlahisoa e le: -cf2-CF2-CF2-CF2-
Meetso e telele ea limoleke tse telele tsa limolek'hule tsa PTF e entsoe ka liathomo tsa carbon, e 'ngoe le e' ngoe ea tsona e hokahane le liathomo tse peli tsa fluorline.
Liathomo tsa fluorine li batla li koahela bokaholimo ba liathomo tsa khabone tsa ketane ea polymer ea spiral polymer. Liatomo tsa carbon li etsa ketane e ka sehloohong ea ketane ea polymer. Marang-rang a folete a etsa sebopeho se kang sa speeld ho potoloha liathomo tsa carbon, tse sirelletsang liathomo tsa khabone tse kahare.
Tokisetso ena e ikhethang ea liathomo e etsa hore PTF ea eona e ikhethang. Sebopeho sena sa limolek'hule se kenya letsoho thepa ea 'meleng le ea lik'hemik'hale.
Lintho tsa Teflon ke eng?
Teflon ke fluopolymer fluopolymer, le Teflon ecnitym ke PTFI (Polystetraflueneethylene).
Teflon ke mokhoa oa khoebo oa chemours, leha ho le joalo, PTFI e ka rekoa le lik'hamphani tse ling ntle le Chemours.
Teflon ke thepa e tummeng ka lebaka la likhohlano tse tlase, mocheso o phahameng oa mocheso, le ho hanyetsa ha lik'hemik'hale.
Ke teflon ptfe
Ho joalo, Teflon ke lisebelisoa tsa polymerized ho Tetraflueroetnee mme ke mofuta oa thepa e arohaneng. Lebitso la eona la lik'hemik'hale ke polytetraflueroekyene (PTFE).
Sebopeho sa lik'hemik'hale sa Tefn o ikhethile haholo. Sebopeho sa limolek'hule ke seo F (liathomo tsa fluor) se nka liathomo tsohle tsa H (Hydrogen liathomo tsohle) holima li-chuin. Ka nako e ts'oanang, hobane radius atom ea fluorne e kholo haholo ho feta rathomohileng oa lifofane, kahoo e ke ke ea kopana le liathomo tsa fluorine haholo.
Ka motsoako o matla oa athomo, sebopeho sa pofelo ea Teflon se sa tsitsa e sa khone ho bapisoa le lisebelisoa tse ling.
Properties Teflon
PTFE ke polymer e polymerized ho Tetraffoethylene monommer. Ke pepenene kapa opaque nox e ts'oanang le pe. Bofebe ba eona ke 2.2g / CM3 le sekhahla sa eona sa ho monya metsi a ka tlase ho 0,01%.
Sebopeho sa lik'hemik'hale sa PTFo Polymer e tšoana le ea liathomo tsohle tsa hydrogen ho Polyethylene e nkeloa sebaka ke liathomo tsa fluorne. Ka lebaka la matla a mabotho a phahameng le boemo bo tsitsitseng ba tlamo ea CF, e khona ho loantšana le li-acication tsa CF mme li ka mamella li-acication tse matla tsa lik'hene) ntle le seriti tsohle tse matla Hammoho le litlamorao tsa li-oxidants tse matla, baemeli ba ho fokotsa le li-solven tse fapaneng tse fapaneng.
F Atom ho Molek'hule ea PTFE e entsoe ka symmetrical, 'me likarolo tse peli tsa bonngoe li kopantsoe ka mokhoa o fapaneng. Ha ho na lielektrone tsa mahala molek'hule, ho etsa hore molek'hule e se ke ea nka lehlakore. Ka hona, e na le thepa e ntle ea lefu, 'me puo ea eona ea motlakase ha e angoe ke tšusumetso ea tikoloho le khafetsa.
Thepa ea 'mele ea Teflon
Ho hana ha eona ho phahameng ho feta 1017, ho lahleheloa ke Diabolose ho phahame, ho hasala ha eona ho lokile, 'me ho ka sebetsa tikolohong ea motlakase ea 250 ° C. Hobane ha ho na litlamo tsa haedrogen ka sebopeho sa limok'hule tsa ptfe, ka hona le crystallization, ka linako tse ling le li-crystallization li phahame haholo. Mocheso oa eona o qhibilihang ke 324c, mocheso oa eona oa botsomi ke 415 ° C, mocheso oa eona oa tšebeliso ea chelete ke 250 ° C. Ke Britle mocheso ke -190 ° C, le mocheso o khokhothelang mocheso (tlasa maemo a 0,46MA) ke 120c.
Lintho tse Tefo tsa Teflon li na le thepa e ntle ea tšebetso. Matla a eona a quaneng a 21 ~ 28mphe, matla a 11 ~ 14mpa Ho lekana ha likhohlano tsa likhohlano tsa polasetiki e pholileng li nyane.
PTFA e na le Matla a Phahameng a Hloekileng, a sitetsoe ho roala hanyetsa le ho hanyela le moea o matla. Hangata ho hlokahala hore u kenye likaroloana tse ling tsa masene, tse kang graphide, tse kang graphien, fiber ea khalase, carbon fiber ea eona. Hape, hape e ka atolosoa ka ho sebelisana le polyphenyase (PFB), Pofeethylene Glycol (PFFene Slycol (PFFene Silcol (PFFene
Teflon e etsoa joang
Ts'ebetso ea tlhahiso e sebelisa chloroform e le ntho e tala, 'me mocheso oa karabelo e le oselang,' me qetellong o sebelisa Tetrafluegene.
Aokai o hlahisoa o sebelisa ho emisoa ka polymeriation kapa emulsion polymerization.
Litokisetso tsa Monommer Tetrafluoeeene
Sekhahla se sebelisoang e le thepa e tala, acid ea monko ea hydrofluortic e sebelisetsoa sworform ea hydronyoc, mocheso oa antimany ' Tetrafluoethylene e ka boela ea hlahisoa ka zinc e nang le tetrafluodichlonerune mochesong o phahameng.
Litokiso tsa polytetraflueeethylene
Kanamel kapa e se nang kelello ea tšepe e se nang thuso, ea potasiamo e sebelisoa e le sethala, le tetraf acidboeth e sebelisoa e le pheko e ntle ea polyethylene. Tetraflueroethylene.
Kenya li-adtings tse fapaneng mabapi le Kettle, 'me tetraflueneene Monommer e kenya ketane ea pelymerication ka mohato oa khase. Fetola mocheso ka Ketto ho ea 25 ° C, joale eketsa amitivator e itseng (sodium metabisulfition) ho qala mokokotlo ka sistimi ea retox. Nakong ea ts'ebetso ea polymerization, masome a tsoela pele ho eketsoa, 'me khatello ea polymeria e bolokoa ka 0.49 ~ 0,78La. Ho seha habonolo ho fumanoeng ka mor'a polymerization ho il'o hlonepha ho tsepamiso e itseng ka metsi, 'me mocheso o fetoloa ho 15 ~ 20,5. Kamora ho hlasimoloha ka mokhoa o hlohlelletsang, e hlatsuoa ka metsi 'me e omisitsoe, ke hore, sehlahisoa sena se fumanoa e le sebaka sa lithuso tse ntle.
Na Tefn e bolokehile?
Terolon ea kenella e bolokehile: Tee ea Teflon ka botsona e ke ke ea bolaeang, e ke ke ea bolaea, 'me e ke ke ea baka likotsi tsa bophelo bohle. Mohlomong ke hobane sebopeho sa eona sa lisele se sa khatisoe ka lik'hemik'hale tsa 'nete, ho re ho' ngoe ho chesoa le ho amohela ka 'mele oa motho.
Theko e ikhethang ea PTFF e sebelisoa haholo mesebetsing ea li batla tsa indasteri le ea metsing a khethollo, puo, lijo.
Kopo ea polytetraflueethylene (PTF) ka har'a thepa ea li-corros:
Ka lebaka la sephiri ho hanela rarabele, khalase, tšepe e ngata, ho thata ho fumana khatello ea bofokoli teng, 'me tahlehelo ea lik'hemik'hale e tšosa. Le ha thepa ea PTF e na le khanyetso e ntle ea lijalo, Polystetrafluoethylene e sebelisa lisebelisoa tsa mantlha tsa croneleum, lik'hemik'hale tse thibelang peteroleum, likhama le indastering e meng.
Likopo tse khethehileng li kenyelletsa: Pipepes ea ho Tsupella, lipeipi tse phahameng tsa oli bakeng sa ho tsamaisa li-hydraulic, khatello ea matla, li-fresents le litanka le litanka. Ts'ebetso ea lisebelisoa tsa lik'hemik'hale e tiisitsoe e joalo ka linyepi le tsa valves li na le tšusumetso e kholo ho katleho le ts'ebetso ea mochini kaofela le lisebelisoa. Lintho tse bonahalang li na le litšobotsi tsa ho hanela li-corrosion Joalo ka litiiso bakeng sa mapolanka a metjeko, sethepu, lijana tsa khatello, lilakane tsa li-glathe, li-pumpe tsa mofuta oa piston, liphula tsa good
2.Po ts'ebetso ea likhohlano tse tlase tsa polytetlaflueroekylene (PTFE) e sebelisoa likolong tsa makoloi.
Likarolo tsa litopo tsa thepa e 'ngoe ha lia lokela bakeng sa tlolo ea lisebelisoa, joalo ka ha ho etsoa mafura a mangata a mafura a tlamehang ho qosa likarolo tse ntle tsa oli. Sena ke hobane ke hobane likhohlano tsa likhohlano tsa thepa ena li tlaase haholo le lisebelisoa tse tiileng tse tsejoang. Mekhoa ea eona e ikhethileng e kenyelletsa lijo bakeng sa lisebelisoa tsa lik'hemik'hale, mochini oa lipampiri, e le mehele ea temo, lisebelisoa tsa mochini. Li sebelisoa ka hohle mererong ea kaho ea lehae e le li-slide tsa ts'ehetso bakeng sa marokho, sebopeho se seholo sa lik'hemik'hale, lipeipi tse kholo tsa lik'hemik'hale le litanka tsa polokelo. Li-block, hammoho le tse sebelisoang e le borokho li ts'ehetsa le ho sesa, joalo-joalo
3.Likono ea polytetrafluoeseene (PTFE) likopo tsa elektroniki le motlakase.
Tahlehelo ea batho ba seng molaong le mokhoa o monyane oa ho etsa lintho tse ngata o e nolofalletsa ho sebelisoa ka har'a li-motsamaisi oa hlooho, likhoele tsa motlakase, tse laoloang, lisele le li-transformers. Hape ke e 'ngoe ea lisebelisoa tse sa tsotelleng bakeng sa mekhatlo ea elekleke ea indasteri ea indasteri ea indasteri e joalo ka aerospace le aerospace. Ts'ebeliso ea lifilimi tsa polasetiki e nang le ho loka ho phahameng ho oksijene le ho khahloa ke mouoane oa metsi. Ho nepahala lena ho ikhethileng ho ka sebelisoa ho etsa sensor ea oksijene. Litšobotsi tsa phofo e khelohileng tlasa mocheso o boima le khatello e phahameng li ka sebelisoa ho etsa li-microphone, libui le ho hana ha tsona ka tlase ho ka sebelisoa. Litšobotsi tsa katleho e kholo li ka etsa likhoele tsa mahlo.
4.Likollo ea polytetraflueroekyene (PTF) meriana ea bongaka.
Lintho tse atolositsoeng tsa PTF li na le kahare ebile li na le mokhoa o matla haholo oa tlhaho. E ke ke ea baka ho la lahla 'mele mme ha e na litla-morao tsa' mele 'meleng oa motho. E ka sitisoa ke mokhoa ofe kapa ofe. Sebopeho sa eona sa likokoana-hloko li lumella ho sebelisoa ka mefuta e fapaneng ea litlhahiso, ho kenyelletsa le methapo ea mali ea maiketsetso le litlatse tsa ho buoa bakeng sa li-vascurile
5.Pol of Anti-thupa ea thepa ea polytetrafluegethylene (PTF).
Lintho tsa PTF li na le likhohlano tse nyane haholo har'a lisebelisoa tse tiileng ebile ha li latele ntho efe kapa efe. E boetse e na le litšobotsi tsa mocheso o phahameng le o tlase oa mocheso le botle ba lik'hemik'hale, o etsa hore o lokele lits'ebetso tse kang tlhahiso. Merero e seng ea lithupa e sebelisoa haholo likopo tsa anti-lithupa. Ts'ebetso ea Anti-Anti-vishive e kenyelletsa mefuta e 'meli: ho kenya leqephe la PTFE ho substrate le ho beha PTF Coating kapa varnish e kopitsoa ka khalase ka substrate ka shrinkage ea mocheso.
Le ha lisebelisoa tsa PTFF li ntse li na le bothata ba bothata bo phahameng bo thata, mekhoa e mecha ea Synthesis e tla rarolla lintlha tsa ho utloa le ho sebelisa PTFE ho ea libakeng tse pharaletseng.
