Teflon fini minnu funteni ka bon, olu dilannikɛlaw b’a jira ko nɛnɛ hakɛ labɛnni ye fɛɛrɛ ye min ɲɛsinnen don kosɛbɛ ani min bɛ se ka kɛ walasa ka kristali kɔlɔsi. PTFE wulilen kɔfɛ pewu 380°C sanfɛ, cakɛda molekilɛriw bɛ labɛn ka kɛ kristalɛ lattiw ye ni u tɛmɛna kristali hakɛ cayalenba hakɛ la min ye 310~315°C ye nɛnɛ waati. Nɛnɛ hakɛ bɛ kristalɛ mara hakɛ ni finimugu cogoya mikroskɔpilen dantigɛ.
1. Nɛnɛ teliya (quenching) walasa ka kristali dɔgɔya
Fini sintirilen yɔrɔ bɛ nɛnɛ joona fiɲɛ nɛnɛ ridow fɛ, nɛnɛbɔlanw fɛ walima jidagayɔrɔw fɛ minnu funteni ka bon. Molecules cakɛdaw bɛ nɛnɛ sani u ka labɛn cogo basigilen na ani cogo la min bɛ kɛ cogo la, ka kɛ kristalɛ kisɛ misɛnninw ni dafabaliw caman ye. O fini min sɔrɔla, o bɛ kɛ ni fɛn nɔgɔlen ye ani ka gɛlɛya ɲumanba jira ni baarakɛcogo ɲuman ye min tɛ nɔrɔ, k’a sɔrɔ a gɛlɛya n’a sɛgɛnbaliya bɛ dɔgɔya dɔɔnin.
2. Aw bɛ nɛnɛ dɔɔni dɔɔni (annealing) walasa ka kristali caman sɔrɔ
Funteni mara yɔrɔ dɔ bɛ labɛn sintering foro bɔyɔrɔ la, walima fini bɛ nɛnɛ ni foro ye ni teliyaba ye min bɛ se 10~50°C/h ma. O bɛ kɛ sababu ye ka molekiyɔmu cakɛdaw lamaga ka ɲɛ walasa ka sɛrɛkili belebelebaw ni dafalenw dilan. O fini in bɛ waso ni gɛlɛyaba ye, a bɛ se ka sɛgɛn kosɛbɛ ani a hakɛ sabatili sabatilen, o bɛɛ n’a ta, a bɛ dɔgɔya ka sɛgɛsɛgɛli kɛ ani ka dɔ fara a kari kan.
II. Taabolo dɛmɛnan ani fɛnw kɔlɔsili
Ka da nɛnɛ hakɛ labɛnni kan, nin fɛɛrɛ dɛmɛnan ninnu bɛ se ka PTFE dacogo kristaliniko ɲɛnabɔ ka taa a fɛ.
1. Sintering funteni ni a minɛ waati
O fɛn ka kan ka sumaya fo ka se 380~400°C ma ani ka a minɛ waati bɛrɛ la walasa ka kristalɛ fɔlɔw wuli pewu ani ka funteni tariku bɔ yen. Sintirili dafalen bɛna kɛ sababu ye ka kristalɛ nukili tolenw to, o bɛ na ni kristali laban ye min ka bon kojugu ani min tilatilali tɛ kelen ye.
2. Furakɛli kɔfɛ sɔgɔsɔgɔninjɛ
Ni finimugu minnu ka kristali ka dɔgɔn, n’u bɛ sɔrɔ nɛnɛ teliya fɛ, kristalɛ filanan falenni ani kɔnɔna degun bɔli bɛ se ka kɛ ni furakɛli ye ni funteni basigilen ye 300~320°C la sanga damadɔ kɔnɔ, o kɔfɛ nɛnɛ bɛ kɛ dɔɔnin dɔɔnin, o bɛ dɔ fara finimugu kristalini kan dɔɔnin dɔɔnin.
3. Fɛnɲɛnamafagalan molekiyɔmu girinya
PTFE jɛnsɛnni min ka bon ni molekiyɔmu ye, o bɛ kɛ sababu ye ka wuli ka wuli ka caya ani ka cakɛda cakɛda lamagacogo dɔgɔya, o bɛ na ni kristalize hakɛ dɔgɔyali ye. O nɛnɛ cogoya kelenw na, a ka nɔgɔn ka finiw labɛn minnu ka kristali ka dɔgɔn.
4. Nukililafɛnw farali ɲɔgɔn kan
Filɛri minnu tɛ fɛnɲɛnamaw ye walima kopolimɛri minnu bɛ kɛ ni perfluorine ye, olu hakɛ fitinin (0,1%~1%) bɛ se ka kristalɛ nukili caman di minnu tɛ kelen ye ani ka kristalɛ kisɛw nɔgɔya kosɛbɛ. Hali n’a tɛ Se ka kristalɛ bɛɛ lajɛlen Yɛlɛma kosɛbɛ, a bɛ kristali mikrosɔrɔcogo ɲuman Kɛ kosɛbɛ.
III. Ɲɛnabɔli bɛɛjɛfanga ka ɲɛsin fɛn caman dilanni ma
Teflon fini min funteni ka bon, o bɛ dilan ni impregnation ni sintering kɛcogo caman ye ni finiw ye minnu bɛ dalajɛ dɔɔnin dɔɔnin, o bɛ taabolo kɔlɔsili laɲininen de wajibiya i n’a fɔ nin cogo in na.
1. Layɛrɛw ni ɲɔgɔn cɛ kristali kɛcogo
Danfaraba minnu bɛ kɛ nɛnɛ hakɛ la layiniw ni ɲɔgɔn cɛ, olu bɛna kɛ sababu ye ka layiniw ni ɲɔgɔn cɛ kristali tɛ bɛn ɲɔgɔn ma ani ka kɔnɔna degunw lase, hali o bɛ na ni finimuguw bɔli ye ko jugumanw na. A ka ɲi ka nɛnɛ nɔgɔman ta cɛmancɛ-la-yɔrɔw la, ka nɛnɛ teliya walima dɔɔni laɲinilen waleya kɛnɛma-yɔrɔ dɔrɔn de kama ka kɛɲɛ ni sɛnɛfɛnw dilanni wajibiyalenw ye.
2. Coating thickness nɔ ye
Datugulan minnu ka bon, olu bɛ tɔɔrɔ ni nɛnɛ ye min tɛ kɛ ɲɔgɔn fɛ, u sanfɛla ni u kɔnɔna cɛ. Kɔnɔna-yɔrɔ bɛ teli ka kristali caman Kɛ k’a sababu Kɛ funteni bɔli ye dɔɔni dɔɔni. A ka kan ka sinta waati janya cogo bɛnnen na walasa ka finimugu bɛɛ funteni hakɛ kelen sɔrɔ sani ka nɛnɛ kɛcogo kelenw waleya.
3. Tension matching nɛnɛ waati
Jiginni min bɛ kɛ fini sanfɛla la nɛnɛ dakun na, o bɛ nɔ bila molekiyɔmu cakɛdaw ɲɛsincogo la, o min bɛ fara ɲɔgɔn kan ni kristali kɛcogo ye, ka fara ɲɔgɔn kan ka kristalɛ cogoya laban ni a hakɛ sabatili dantigɛ. Kɔlɔsili kɛcogo jɛlen ni tigitigi ye wajibi ye.
IV. Kristalini hakɛ dɔnni
Differential Scanning Calorimetry (DSC) ka kan ka ta walasa ka kristali sɛgɛsɛgɛ baarakɛcogo ladilanni kɔfɛ. 5~10mg dacogo misali bɛ sumaya ni 10°C/min ye walasa ka a wulicogo entalpi sɛgɛsɛgɛ. Kristalini jate bɛ Kɛ ni sɔgɔli entalpi kɔrɔbɔlen tilali ye ni 100% kristali PTFE (82J/g ɲɔgɔn) wulilen entalpi teori ye. Ni u farala ɲɔgɔn kan ni bending resistance, wear resistance ani baarakɛcogo sɛgɛsɛgɛli wɛrɛw ye, baarakɛcogo finɛtiri ɲuman bɛ se ka dɔn.
Baarakɛcogo caman : Walasa ka kristali dɔgɔyalen sɔrɔ, aw bɛ teliya ka fagali kɛ sintering dafalen kɔfɛ; walasa ka kristali caman sɔrɔ, aw bɛ funteni to 310°C kɛrɛfɛ ka sɔrɔ ka nɛnɛ dɔɔni dɔɔni kosɛbɛ sintering dafalen kɔfɛ.
Walasa ka kunnafoni kunbabaw sɔrɔ an ka fɛn dilannenw bɛɛ lajɛlen ka paramɛtiriw ɲɛfɔlenw kan, baarakɛcogo misaliw ani furaw ɲɛnabɔcogo la minnu bɛ kɛ ka kɛɲɛ ni mɔgɔw sago ye, i n’a fɔ Teflon fini min bɛ funteni caman bɔ, Teflon kasɛti min bɛ nɔrɔ funteni caman na, Teflon min bɛ kɛ ni nɛgɛ ye min bɛ funteni caman bɔ, cɛsirilan min bɛ kɛ ka fɛnw siri ɲɔgɔn na, PTFE fini min bɛ kɛ fan kelen fɛ, fɛnɲɛnamafagalan min bɛ se ka funteni caman kɛlɛ ani min bɛ se ka funteni caman kɛlɛ fibre de verre fini, aw bɛ se ka anw ɲininka ɛntɛrinɛti kan walima ka kuma an ka baarakɛyɔrɔ telefɔni nimɔrɔ fɛ.
Ka tugu baarakɛlaw ni danbe baarakɛcogo hakilila la, an cɛsirilen don ka furaw di minnu bɛ kɛ yɔrɔ kelen na ani ka baara jateminɛlenw di kiliyanw bɛɛ ma!
