Iyini impahla ye-PFA? Ukuhlaziywa okuningiliziwe nezimo zohlelo lokusebenza
Embonini yamakhemikhali nasezinhlelweni eziningi ezifunwa yizimboni, ukukhetha kwezinto ezifanele kubalulekile - iyini i-PFA? Lo mbuzo uvame ukuvela ezingqondweni zochwepheshe abadinga izinto ezikwazi ukumelana namazinga okushisa aphezulu kanye nokugqwala. Kulesi sihloko, sizohlinzeka ngemininingwane eningiliziwe yemvelo nezakhiwo zezinto ze-PFA kanye nohlu olubanzi lwezimo zohlelo lokusebenza.
Yini i-PFA?
I-PFA (Perfluoroalkoxy) iyi-fluoropolymer eyingxenye yomndeni we-polytetrafluoroethylene (PTFE).Impahla ye-PFA ithuthukisa ukucutshungulwa kwezinto ngokwethula izinto ezishintshayo ze-alkoxy, futhi inamandla okushisa angcono kakhulu namandla emishini aphakeme uma kuqhathaniswa ne-PTFE.Izakhiwo zamakhemikhali zezinto ze-PFA zifana nalezo ze-PFAPTFE ezingcono, kodwa zifana nalezo ze-PFAPTFE. I-PTFE, kodwa ngenxa yokucutshungulwa kwayo okungcono kanye nokuba sobala, i-PFA inenzuzo ezinhlelweni eziningi lapho kudingeka khona ukunemba.
Izakhiwo Ezibalulekile Zezinto Ze-PFA
Izinto ze-PFA zisetshenziswa kabanzi ukumelana kwazo namakhemikhali okuhle kakhulu nokuzinza kokushisa. Ngezansi ezinye zezakhiwo ezibalulekile zezinto ze-PFA:
Ukumelana Nokushisa Okuphezulu: Izinto ze-PFA ziyakwazi ukugcina izakhiwo zazo ezingokwenyama namakhemikhali emazingeni okushisa aphezulu, kuze kufike ezingeni lokushisa eliphezulu lesevisi elingu-260°C. Lokhu kwenza i-PFA ibe ukukhetha okuhle kakhulu kwezinhlelo zokusebenza ezidinga ukuzinza okuphezulu kwezinga lokushisa.

Ukumelana Kwamakhemikhali: I-PFA ikhombisa ukumelana okuhle kakhulu cishe nawo wonke amakhemikhali, kufaka phakathi ama-asidi aqinile, izisekelo kanye nezincibilikisi zemvelo. Lokhu kuyenza idume kakhulu embonini yamakhemikhali, ikakhulukazi kumapayipi kanye nemikhumbi ethwala uketshezi olubolayo namagesi.

Izakhiwo zokungqubuzana okuphansi nezingezona izinti: I-PFA ene-coefficient ephansi yokungqubuzana kanye nezakhiwo ezingabambeki ziyenza ifaneleke ezinhlelweni lapho kudingeka khona ukunciphisa ukuguga nokuvimbela ukunamathela, njengakuma-coatings nezimpawu.

Ukufakwa kukagesi: I-PFA inezindawo ezinhle kakhulu zokuvala ugesi, okwenza ukuthi ibaluleke kakhulu ekusebenzeni kwezimboni zikagesi nezikagesi.

Izindawo zokufaka isicelo se-PFA
Ngenxa yezakhiwo zayo ezihlukile, impahla ye-PFA isetshenziswa kabanzi ezimbonini eziningana. Okulandelayo ezinye zezindawo eziyinhloko zokufaka isicelo:
Imishini yamakhemikhali neye-petrochemical: Ngenxa yokumelana kwayo namakhemikhali okuhle kakhulu, i-PFA ivame ukusetshenziselwa ukwenza amapayipi amapayipi, ama-valve, amaphampu nemikhumbi. Lezi zixhobo zidinga ukumelana namakhemikhali okuphezulu kakhulu lapho uphatha uketshezi olubolayo namagesi, futhi izinto ze-PFA zingandisa ngempumelelo impilo yesevisi yemishini.

Ukukhiqiza I-Semiconductor: Ukuhlanzeka okuphezulu kwe-PFA kanye nokumelana nokugqwala kuyenza into ebalulekile emishinini yokukhiqiza i-semiconductor, njengamapayipi nemikhumbi esetshenziswa ekukhiqizeni amasistimu amakhemikhali e-chemical vapor deposition (CVD).

Amadivayisi Ezokwelapha: Emkhakheni wezokwelapha, i-PFA ivame ukusetshenziswa ekwenziweni kwamadivayisi anezidingo eziphezulu ze-biocompatibility, njengama-catheter ne-sensor housings.Ukungena kwamakhemikhali kanye nokuzinza okushisayo kwezinto ze-PFA kuqinisekisa ukuphepha nokuthembeka kwalawa madivayisi.

Isiphetho
Ukuhlaziywa okungenhla kusinika isithombe esicacile sokuthi iyini i-PFA.PFA iwumthombo we-fluoropolymer obaluleke kakhulu ezimbonini eziningi.Ukumelana kwayo nezinga lokushisa eliphezulu, ukumelana namakhemikhali, ukungqubuzana okuphansi, kanye nezakhiwo zokuvala ugesi kuyenza ibe usizo ezinhlobonhlobo zezinhlelo zokusebenza kumakhemikhali, i-electronics, kanye nezinkundla zezokwelapha. Uma ufuna into engaphumelela ezimweni ezimbi kakhulu, i-PFA iyindlela okufanele icatshangelwe ngayo.