Politetarafluoroɛtilɛni (PTFE) ye polimɛri ye min bɛ kɛ ni karɔbɔni ni fluor ye. Nin kunnafoni in tɔgɔ ye ko Teflon.
PTFE ka nafaw ye:
Mekaniki jogo ɲumanw (<1%) .
kemikɛli inertness corrosion resistance .
Sumaya kɛlɛli .
Coefficients de friction ka dɔgɔn .
Non stick properties(ni a bɛ to ka funteni caman sɔrɔ 500°F (260°C))
Aw bɛ resistance don .
A ka ca a la .
PTFE ka jogo ɲumanw bɛ baara caman di a ma, wa a bɛ kɛ ka caya i n’a fɔ tobilikɛminɛnw dacogo. PTFE ka sɛgɛnbaliya ka ɲɛ, o b’a to a bɛ se ka fara fɛn suguya caman kan ni polimerizasiyɔn walima suspension polimerizasiyɔn baarakɛcogo ye walasa ka izini fɛnw dilan minnu bɛ se ka funteni sɔrɔ kosɛbɛ ni masinw ka baarakɛcogo ɲumanw ye, i n’a fɔ nɛgɛw labɛncogo, dumuni-sɛnɛ-minɛnw, finiw minnu tɛ sɔgɔ, a ɲɔgɔnnaw.
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Polytetrafluoroethylene sɔrɔla san 1938. A daminɛ na, a sɔrɔla Ameriki furakɛlikɛla Roy J. Plunkett fɛ (1910–1994) tuma min na a tun b’a ɲini ka karɔbɔni ni fluor refrigerant kura dilan. Mɔgɔw tun tɛna miiri o fɛn gansan in na o waati la. Katalisita kabakomaw bɛna nɔ bila diɲɛ fan bɛɛ la.
San 1941, DuPont ye patenti sɔrɔ nin fɛn in na ani a ye jagokɛyɔrɔ taamasiyɛn sɛbɛn 'teflon' tɔgɔ la san 1944.
Bi bi in na, politetrafluoroethylene bɛ baara kɛ kosɛbɛ fɛn dilanni ni ɲɛnamaya sira caman na. Dumunikɛyɔrɔ la, PTFE tobilikɛminɛnw bɛ baara kɛ kosɛbɛ; Finitigiw ka baara la, fini nɛnɛma minnu tɛ se ka nɛnɛ, olu bɛ sɔrɔ ka bɔ fɛntigiw la i n’a fɔ Helikon ani Carinthia, olu bɛɛ bɛ PTFE kɛ finimugu ye walima kɛnɛma. , walasa ka se ka nɛnɛ jugumanba muɲu min ye -30°C ye; Sɔrɔdasi siratigɛ la, PTFE fɛn minnu bɔnɛnen tɛ, dielektriki jogo ɲumanw, ɲɔgɔndan ɲuman, kemikɛli sabatili, ani a bɛ se ka kɛ ko ji minɛcogo si tɛ kɛ ka caya arajolakalan radariw la minnu ka bon kosɛbɛ. Furakɛcogo la, PTFE fɛnw fana bɛ kɛ ka caya farikolo yɔrɔw la minnu dilannen don.
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PTFE kɔrɔ ye politetrafluoroethylene ye, o ye kemikaliya daɲɛ ye polimɛri (C2F4)N.
Nin fɛn in bɛ tali kɛ PTFE synthétique fluoropolimɛri suguya bɛɛ la. Politetrafluoroethylene ka jogo jɔnjɔnw ye ninnu ye:
Baara funteni hakɛ min bɛ se ka kɛ (°F /°C): 500/260 .
Tensile strength at break (PSI): 4000 .
Dielektriki basigilen (KV/MIL): 3,7.
Proportion: 2.16 Bamako, Mali.
Elongation ka lafiɲɛbɔ: 350% .
Shore D gɛlɛya: 54 .
PTFE politetrafluoroethylene synthétique fluoropolymer min bɛ kɛ ka caya, n’a cogoyaw bɛ sanfɛ, o bɛ ni taamasiyɛn jatebaliya ye kaban, a tɔgɔlafɛnw ye ninnu ye:
PTFE ka kemikɛli sigicogo .
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Polytetrafluoroethylene ye polimɛri sinsinni ye min bɛ kɛ ni karɔbɔli (C) ni fluor (F) atomu ye, ni formula chimique (C2F4)N ye, n ye monomɛri unit hakɛ ye min na.
PTFE sigicogo bɛ se ka jira i n’a fɔ: -CF2-CF2-CF2-CF2-
PTFE mɔlikuluw ka cakɛda jan bɛ kɛ ni karɔbɔli atomu ye, u kelen-kelen bɛɛ bɛ tali kɛ fluor atomu fila la.
Fluorine atomu bɛ ɲini ka atomi atomu ka carbone atomu sanfɛ. Karɔbɔli atomu bɛ kɛ polimɛri cakɛda cakɛda kunba ye. Fluor (fluor) atomiw bɛ kɛ ka karɔti atomuw lamini, o min bɛ kɔnɔna kabon atomuw lakana kosɛbɛ.
O atomiw labɛncogo kɛrɛnkɛrɛnnen in bɛ PTFE ka jogo danmadɔw Di. O molekiyɔmu jɔcogo in bɛ kɛ sababu ye ka PTFE ka farikolo ni a ka kemikaliya cogoyaw sɔrɔ minnu tɛ se ka suma ni ɲɔgɔn ye.
Teflon ye fluoropolimɛri ye min bɛ se ka wuli ka bɔ a nɔ na, ani teflon daɲɛ surun ye PTFE (polytetrafluoroethylene) ye.
Teflon ye chemours ka jagokɛyɔrɔ taamasiyɛn ye, nka, PTFE bɛ se ka san fana ka bɔ tɔnw na minnu tɛ Chemours ye.
Teflon ye fɛn ye min bɛ Fɔ kosɛbɛ k'a sababu Kɛ a ka 'sènbɔli dɔgɔyali ye, a ka funteni ka bon, ani a ka 'fɛnɲɛnɛma-fanga.
Tiɲɛ don, teflon ye polimɛri fɛn ye min bɛ polimerize ka bɔ tetarafluoroethylene la ani a ye fɛn suguya dɔ ye min bɛ kɛ ni perfluorine ye. A ka kemikaliya tɔgɔ ye politetrafluoroethylene (PTFE).
Teflon kemikoro jɔcogo ye fɛn ye min ɲɔgɔn tɛ. Molecules structure ye ko F (fluorine atoms) bɛ H (hydrogène atoms) bɛɛ bila C cakɛda kan. O waati kelen na, bawo fluor atomu ka radiyali ka bon kosɛbɛ ka tɛmɛ karɔbɔli atomu ka radiyali kan, atomiw ni ɲɔgɔn cɛ repulsion ka bon kosɛbɛ, o la a tɛna kɛ i n’a fɔ hidrɔzɛni atomiw, u bɛ se ka labɛn awiyɔn kɔnɔ, o la fluor atomuw bɛ ɲini ka wuli ka bɔ karɔbɔli atomiw la, walasa kɛnɛma diɲɛ ka se ka don dɔrɔn ni atomiw ye minnu bɛ se ka kɛ fɛn ye.
Ni fluor atomu barika barikama don, teflon polimɛri jɔcogo bɛ sabati kosɛbɛ ni a bɛ tali kɛ fɛn wɛrɛw la.
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PTFE ye polimɛri ye min bɛ bɔ tetarasikilini monomɛri la. O ye sizo ye min bɛ kɛ ni PE ye walima min tɛ ye. A ka density (dansi) ye 2,2g/cm3 ye wa a ji minɛcogo bɛ dɔgɔya ni 0,01% ye.
PTFE polimɛri ka kemikaliya cogoya bɛ tali kɛ PE ta la, fo n’a bɔra atomi atomu bɛɛ la poliyetilɛni na, o bɛ bila fluor atomu nɔ na. K’a sababu kɛ CF jɛɲɔgɔnya fanga bonya ye ani a ka baarakɛcogo sabatilen, a bɛ se ka kɛ ni kemikɛli sɔgɔli ye kosɛbɛ wa a bɛ se ka asidi barikamaw bɛɛ muɲu (Aqua Regia fana sen bɛ o la) fo nɛgɛ alkali wulilenw, oksidanw, ani idɔrɔkisidi sodiyɔmu sanfɛ 300°C sanfɛ. ka fara oksidan barikamaw nɔ kan, fɛn minnu bɛ fɛnw dɔgɔya ani fura suguya caman.
F atomu min bɛ PTFE molecule kɔnɔ, o ye simetri ye, wa CF jɛɲɔgɔnya kɔnɔfɛn fila bɛ siri ɲɔgɔn na. Elektɔron hɔrɔnma si tɛ mɔlikuluw la, o bɛ kɛ sababu ye ka mɔlikulu bɛɛ kɛ fɛn ye min tɛ fɛn kɛ. O la, a bɛ ni dielektriki jogo ɲumanw ye, wa a ka kuran insulation tɛ nɔ bila sigida ni a kɛcogo la.
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A hakɛ resistivity ka bon ni 1017 ye, a ka dielektriki bɔnɛ ka dɔgɔ, a ka tiɲɛni voltage ka bon, a ka arc resistance ka ɲi, wa a bɛ se ka baara kɛ kuran sigida la min bɛ 250°C. Komin idɔrɔzi jɛɲɔgɔnya tɛ PTFE molekiyɔmu jɔcogo la, o la, a jɔcogo ye simetriki ye, o la a kristalɛ hakɛ kristalize hakɛ ka bon kosɛbɛ (a ka c’a la, kristalɛ ye 55%~75% ye, tuma dɔw la, a bɛ se ka kɛ 94%) ye, o min bɛ PTFE kɛ funteni ye kosɛbɛ. A wulicogo funteni ye 324C ye, a tiɲɛni funteni ye 415°C ye, a baara funteni hakɛ bɛ Se 250°C ma. A bɛ kari a funteni ye -190°C ye, wa funteni tiɲɛni funteni (0,46MPa cogoya jukɔrɔ) ye 120C ye.
Teflon Material bɛ ni masinw ka jogo ɲumanw ye. A ka fanga ye 21~28mpa ye, a kɔrɔtalen fanga ye 11~14mpa ye, a janya ye 250%~300% ye, wa a ka fɛnɲɛnamafagalan ni a ka sɔgɔli hakɛ min bɛ kɛ ni nɛgɛ ye, o fila bɛɛ ye 0,04 ye, o min ka fisa ni nilon, poliformaldeyi, ani poliyetilɛni ye. Plastiki nɛnɛmanw ka friction coefficient ka dɔgɔn.
Pure PTFE fanga ka dɔgɔn, a sɛgɛnbaliya ka jugu ani a tɛ se ka sɛgɛn. A ka c’a la, a ka kan ka fɛnɲɛnama dɔw fara PTFE polimɛri kan, i n’a fɔ grafite, disulfide kulu, aluminiyɔmu ɔkisidi, gilasi fiyɛ, fibre carbone, a ɲɔgɔnnaw walasa k’a ka masinko kɛcogo ɲɛ. , ani a bɛ se ka bonya fana ni jɛɲɔgɔnya ye ni polimɛri wɛrɛw ye i n’a fɔ polifenilazi (PHB), polifenilɛni sulfide (PFS), poliyetilɛni gilikɔli (Peek), poliyetilɛni/poropilini kopolimɛri (PFEP), a ɲɔgɔnnaw A ka funteni hakɛ caya, a bɛ se ka a ka se ka fɛn caman caman sɛnɛ.
Teflon bɛ kɛ cogo min na .
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O dilanni kɛcogo bɛ kulorofɔrimu kɛ fɛn ye min bɛ kɛ ni fɛnɲɛnamafagalanw ye, a bɛ asidiji jimafɛnw kɛ ka kulorofɔrimu kɛ, a kɛcogo funteni bɛ 65oC sanfɛ, a bɛ antimoni pentakuloridi kɛ katalisɛri ye, ka laban ka funteni karili kɛ ka tetarasikilini (tetrafluoroethylene) dilan.
Aokai bɛ dilan ni polimerizasiyɔn suspension walima emulsion polimerizasiyɔn ye.
Tetrafluoroéthylène monomère labɛnni .
Industriyali la, kulorofɔrimu bɛ kɛ fɛn kɛnɛ ye, asidiji jimafɛnw bɛ kɛ ka kulorofɔrimu fluorin kɛ, a kɛcogo funteni bɛ tɛmɛ 65oC kan, antimoni pentachloride bɛ kɛ katalisɛri ye, wa a laban na, tetarafluoroetilɛni bɛ sɔrɔ funteni fɛ. Tetarafluoroɛtilɛni fana bɛ se ka sɔrɔ ni zinki ni tetarasikilini (tetrafluorodichloroetan) kɛcogo ye funteni caman na.
Politetrafluoroethylene labɛnni .
Emɛri walima nɛgɛ min bɛ kɛ ni nɛgɛ ye, ji bɛ kɛ fɛnɲɛnamafagalan ye, potasiyɔmu persulfate bɛ kɛ a daminɛbaga ye, asidi perfluorocarboxylic ammonium ammonium kɔgɔ bɛ kɛ jɛnsɛnni ye, fluorocarbon bɛ kɛ stabilisateur ye, ani tetarafluoroethylene ye redOx polyetylene ye. Tetarafluoroɛtilɛni.
Aw bɛ faralifɛn suguya caman fara reaction kettle kan, ani tetrafluoroethylene monomer bɛ don polimerizasiyɔn jibɔlan na gazi fasa la. Aw bɛ funteni hakɛ ladilan ka se 25°C ma, o kɔ aw bɛ activateur (sodium metabisulfite) hakɛ dɔ fara a kan walasa ka polimerizasiyɔn daminɛ ni redox system ye. Polimerizasiyɔn kɛcogo la, monomɛriw bɛ fara ɲɔgɔn kan tuma bɛɛ, ani polimerizasiyɔn tansiyɔn bɛ mara 0,49~0,78MPa la. Dispersion min bɛ sɔrɔ polimerizasiyɔn kɔfɛ, o bɛ dilan ka kɛ ji ye ni ji ye, ka funteni hakɛ ladilan ka se 15~20oC ma. A bɛ fara ɲɔgɔn kan ni masinw ye, a bɛ ko ni ji ye k’a ja, o kɔrɔ ye ko nin fura in bɛ sɔrɔ i n’a fɔ resin granular fin.
Yala Teflon ye lakana ye wa?
Teflon dacogo yɛrɛ tɛ farati ye: Teflon fɛn yɛrɛ tɛ baga ye, a tɛna tiɲɛ, wa a tɛna farati lase kɛnɛyako ma. O bɛ se ka kɛ bawo a molekiyɔmu jɔcogo jɔnjɔn tɛ se ka wuli kemikɛli lakikaw la, a kana fɔ ko hadamaden farikolo bɛ sɔgɔ ani k’a minɛ.
Aw ye kunnafoni wɛrɛw sɔrɔ Teflon Safety kan .
PTFE ye mun ye min bɛ baara kɛ ni nin ye .
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PTFE ka jogo kɛrɛnkɛrɛnnenw b’a to a bɛ kɛ kosɛbɛ iziniw ni kɔgɔjiw baara la i n’a fɔ kemikɛli, petoroli, finiko, dumuni, papiye dilanni, furakɛli, ɛntɛrinɛti ani masinw.
Politetrafluoroethylene (PTFE) kɛli ka ɲɛsin sɔgɔsɔgɔninjɛ kɛlɛli ma:
K’a sababu kɛ nɔgɔw ye minnu bɛ sɔrɔ lastikuw, gilasi, nɛgɛw ani fɛn wɛrɛw sɔgɔli la, a ka gɛlɛn ka sigida gɛlɛnw kunbɛn yɔrɔ min na funteni, degun ani kemikɛli fɛɛrɛw bɛ sigi ɲɔgɔn fɛ, wa bɔnɛ minnu bɛ sɔrɔ o la, olu bɛ mɔgɔ jalaki kosɛbɛ. Hali ni PTFE fɛn bɛ se ka sɔgɔli kɛ ka ɲɛ, politetrafluoroethylene bɛ baara kɛ ni fɛnw ye minnu bɛ se ka fɛnw sɔgɔ petoroli, kemikɛli, finiko ani izini wɛrɛw la.
Baara kɛrɛnkɛrɛnnenw ye : fɛnw lasecogo pipew, fiɲɛbɔlanw, watara pipe minnu bɛ kɛ ka gazi nɔgɔlenw ta, ka tulumafɛnw ta minnu bɛ se ka wuli ka bɔ u nɔ na, minnu bɛ kɛ ka fɛnw wuli, minnu ka bon, minnu ka ca ani minnu ka dɔgɔn, awiyɔnw ka jibolisiraw ni nɛnɛbɔlanw kama, distillation towers, heat exchangers, towers ani tanks. Kimikɛlanw sigilanw ka baara kɛcogo i n’a fɔ finimuguw ni jirisunw, o bɛ nɔba bila masin ni minɛnw bɛɛ ka baarakɛcogo n’u ka baarakɛcogo la. PTFE fɛn bɛ ni fɛnw ye minnu bɛ se ka sɔgɔsɔgɔ, ka kɔrɔya, ka ɲɔgɔn sɔgɔsɔgɔ ani ka sɛgɛnbaliya, funteni hakɛ caman sɔrɔ, ani ka wuli ka ɲɛ, o b’a to a bɛnnen don kosɛbɛ fɛn dilanni sigilanw ma minnu ka sɔgɔlicogo ka bon ani minnu ka baara kɛcogo ka bon ni 100° ye. i n’a fɔ masinw, funteni fɛnw, tansiyɔnba minɛnw, kurunw, bɔlɔnw, ani pɔnpew, sigilanw, ani pɔnpew, gilasi reaction dagaw, flanpan fla, flanbaw, shafts, piston berew, valde rods, gager pumps, tie rod sigilanw, a ɲɔgɔnnaw.
2.Politetrafluoroéthylene (PTFE) ka sɔgɔli kɛcogo dɔgɔyali bɛ kɛ doni tali la.
Minɛn dɔw ka sɔgɔli yɔrɔw man ɲi tulumafɛnw ma, i n’a fɔ ko minnu na tulumafɛnw bɛna bɔ u la, u bɛna kɛ furajiw ye ani ka kɛ nafama ye, walima papiye dilanni na, furakɛlifɛnw, dumuniw, finiw, a ɲɔgɔnnaw Fɛn minnu bɛ sɔrɔ izini foro kɔnɔ, olu mago bɛ tulumafɛnw na minnu bɛ tulumafɛnw kɛ tulumafɛnw na (direct loading lubricated lubricating lubricated lubricating lubricated lubricated loading lubricating meust imeal meust ideal thind material for oil-free lubric. O bɛ Kɛ k’a sababu Kɛ nin fɛn in ka friction coefficient (fɔɔnɔ) ye fɛn gɛlɛn dɔntaw cɛ. A baara kɛrɛnkɛrɛnnenw ye fɛnw ye minnu bɛ kɛ ka kemikɛli minɛnw, papiye dilanni masinw, ani sɛnɛfɛnw, i n’a fɔ pisini bololanɛgɛw, masinw ɲɛminɛbaga ɲɛminɛlanw, ani ɲɛminɛlanw. U bɛ baara kɛ kosɛbɛ siwili jɔli porozɛw la i n’a fɔ dɛmɛlanw ka ɲɛsin bɔrɔw ma, tunɛri nɛgɛw jɔli so sanfɛlanw, kemikɛli pibilikibaw, ani fɛnw marayɔrɔw. blokiw, ka fara a kan i n’a fɔ bridge supports ani bridge swivels, etc.
3.Politetrafluoroethylene (PTFE) baarakɛcogo minnu bɛ sɔrɔ ɛntɛrinɛti ni kuran na.
PTFE fɛnw ka bɔnɛ dɔgɔyali ni u ka dielektriki basigilen fitinin bɛ se ka kɛ nɛgɛw ye minnu bɛ kɛ ni fɛnɲɛnamafagalan ye walasa ka baara kɛ ni mikro motɛriw ye, thermocouples, controle devices, a ɲɔgɔnnaw, PTFE kuran insulasi film A ye fɛn ɲuman ye min bɛ se ka fɛn caman dilan, arajo insulation liners, insulated cables, moteurs ani transformateurs. O fana ye fɛn nafamaba dɔ ye min bɛ kɛ ka ɲɛsin izini ɛntɛrinɛti yɔrɔw ma i n’a fɔ aerospace ani aerospace. Fluorine plastiki filimuw baara bɛ se ka kɛ ni ɔkisizɛni ye kosɛbɛ ani ji lamagacogo caman bɛ se ka don u la. Nin perméabilité selective de petite-préméabilité bɛ se ka kɛ ka oxygère sensors dilan. Fluoroplastics jogo minnu bɛ kɛ sababu ye ka polar charge deviation kɛ funteni ni tansiyɔnba kɔrɔ, olu bɛ se ka kɛ ka mikrow, kumakanfɔlaw, yɔrɔ dɔw dilan robow kan, a ɲɔgɔnnaw, ani u ka refraction dɔgɔman bɛ se ka kɛ. Baarakɛcogo ɲuman jogo bɛ se ka fibre optiquew dilan.
4.Politetrafluoroéthylène (PTFE) tali furakɛli furakɛli la.
PTFE fɛn min bɛ bonya, o ye fɛn ye min tɛ se ka kɛ dɔrɔn, wa a bɛ se ka ladamu ni ɲɛnamaya ye kosɛbɛ. A tɛna kɛ sababu ye ka ban farikolo la wa farikolo kɔlɔlɔ si tɛ a la hadamaden farikolo la. A bɛ se ka sterilize ni fɛɛrɛ o fɛɛrɛ ye. A ka mikroporous (microporous) jɔcogo bɛ se ka kɛ ka furakɛli kɛ ni fɛnw ye minnu bɛ se ka kɛnɛya, olu ye joli siraw ye minnu dilannen don ni farikolo yɔrɔ nugulamaw labɛnni ye ani opereli suturaw ye joli siraw, dusukun, fɛn bɛɛ lajɛlen ani kolotugudaw la.
5.Politetrafluoroéthylène (PTFE) ka banakisɛfagalanw tali.
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PTFE material bɛ ni surface tension (yɔrɔjan) fitinin ye fɛn gɛlɛnw cɛ wa a tɛ nɔrɔ fɛn si la. A fana bɛ ni jogo ye min bɛ funteni caman ni funteni dɔgɔya ani kemikaliya inertness, o b’a to a bɛnnen don baarakɛcogo ma i n’a fɔ fɛn dilanni. Pan minnu tɛ wuli, olu bɛ kɛ ka caya anti-stick baarakɛcogo la. Anti-adhésif (Anti-adhésif) taabolo ye suguya fila ye kɛrɛnkɛrɛnnenya la: PTFE sɛbɛn in sigili substrat (sɔgɔlan) kan ani ka . PTFE coating walima vernis composited ni gilasi substrat kan funteni dɔgɔyali fɛ.
Aw ye kunnafoni wɛrɛw sɔrɔ PTFE Coatings kan .
Hali ni gɛlɛya bɛ PTFE fɛnw na hali bi, gɛlɛya ka bon welding na, ni fɛɛrɛ kuraw bɛ taa ɲɛ, sintezi fɛɛrɛ kuraw bɛna PTFE dimi yɔrɔw ɲɛnabɔ sɔɔni, ka PTFE kɛ foro caman na.
