Selokhu iDupont yaqala ukukhiqiza i-PTFE ngo-1945, sekuyiminyaka engama-61 kusukela ngaleso sikhathi.Manje njengomkhiqizo obalulekile we-PTFEIfilimu ye-PTFE microporousisetshenziswa kabanzi, ukwandisa insimu kusukela kubunjiniyela bezinto eziphilayo kuya embonini yezingubo, kusukela embonini yemishini kuya ku-petrochemical, embonini yokuvikela imvelo ingasetshenziswa hhayi kuphela kumaphrojekthi wokuhlanza amanzi, kodwa futhi nokuhlanzwa kwezinhlayiya zomoya.Kungashiwo ukuthi uhla lwayo lokusebenza lusabanzi uma kuqhathaniswa.
Izimpawu ze-polytetrafluoroethylene
1. Izici zesakhiwo samangqamuzana
2. Ukuzinza kwamakhemikhali
3. Izakhiwo ezishisayo
4. Izakhiwo zemishini
5. Izakhiwo zikagesi
6. Izakhiwo ezingaphezulu
Ukuthuthukiswa kwefilimu ye-PTFE microporous
Njengamanje, inqubo yokukhiqizaIfilimu ye-PTFE microporousinendlela yefilimu ye-calendering, indlela yefilimu yokuphendula kanye nendlela yefilimu enwebekayo.Indlela yefilimu yokwelula ingahlukaniswa ibe indlela eyodwa yokwelula kanye nokwelula okubili, ngokuhlaziywa kwesakhiwo nokulinganisa kwangempela, ifilimu enezinhlangothi ezimbili kuphela enesakhiwo esihle se-microporous.Inqubo yokukhiqiza yefilimu encane ye-PTFE egxile ku-biaxially iboniswa esithombeni.
Ukusetshenziswa kwefilimu ye-PTFE microporous
1. Isicelo ezintweni zokuhlunga
2. Isicelo ezintweni zokwelapha
Ukulungiswa kwefilimu ye-PTFE
1. Inqubo yangaphambi kwefilimu ye-PTFE microporous
2. Inqubo yokulungiselela
3. Inqubo yokukhiqiza
Ithonya lamapharamitha okusebenza ezakhiweni zamafilimu e-PTFE
Izici ezithonya izakhiwo ze-PTFE microporous films in the biaxial stretching process and its pre-process are complex and multifaceted.Ngaphezu kokusebenza kwemishini yokucubungula, izinga lokushisa elilula kanye nesilinganiso sokwelula, ezinye izici ezithonya yilezi: izinga lokushisa lokusebenza, umswakama osebenzayo.
Izinga lokushisa elisebenzayo: Amafilimu e-PTFE azwela kakhulu izinga lokushisa, futhi amazinga okushisa ahlukene okushisa angabangela izakhiwo zefilimu ezahlukene.Izinga lokushisa liyipharamitha yokusebenza ebalulekile hhayi kuphela enqubweni yokwelula, kodwa futhi nasekucubungulweni kwe-resin ye-PTFE kanye nezinqubo eziphakathi nendawo.
Umswakamo Osebenzayo: Umswakamo uncike kuzinga lokushisa futhi ngeke kuxoxwe ngakho ngaphandle kwezinga lokushisa.Umswakama we-ambient nawo unomthelela efilimini.
I-PTFE inokuqina okuvelele kwamakhemikhali, ukusebenza kahle kakhulu kwezinga lokushisa eliphezulu neliphansi kanye nokumelana nokugqwala, futhi isetshenziswa kabanzi ezimbonini zamakhemikhali, zikaphethiloli, zendwangu, zikagesi nezemishini.Khonamanjalo, izakhiwo eziqinile ze-hydrophobic kanye nezimbotshana ze-PTFE ziyenza ibe ulwelwesi olufanele lokulungiselela imicu yendwangu engangeni manzi futhi ephefumulayo kanye ne-membrane distillation kanye ne-membrane contactors.Uma kuqhathaniswa nezinye izinto zokwakha ulwelwesi, ulwelwesi lwe-ePTFE ukuphela kwelwelwesi olungasetshenziswa ngokuzinza isikhathi eside nge-coefficient yokudlulisa ngobuningi, kanye nezinzuzo zobukhulu obuncane, ikhono eliqinile lokuzisekela kanye nokuminyana okuphezulu kokulayisha kolwelwesi olungenalutho lwefiber. Ama-membrane e-fiber angenalutho e-PTFE aheha ukunaka okukhulu emkhakheni wabathintana nolwelwesi.
Izimbotshana ze-fiber engenalutho ze-PTFE zilungiswa ngendlela yokudweba i-extrusion, futhi inqubo yokulungiselela ihlanganisa ukuxuba, ukuphotha kwe-extrusion, ukunwebeka okukodwa kanye ne-sintering.Izinto ezixutshwe ngokugcwele ze-PTFE zicindezelwa ngaphambilini ngokucindezela okungenalutho ukuze kungabi nalutho isilinda.Izikhala ezicindezelwe ngaphambilini ziyanwetshwa futhi ziphothwe ku-40-100°C.Ngemva kokwehlisa, ukusetha ukushisa ukuze kutholwe ulwelwesi lwefiber engenalutho lwe-PTFE.Izinga lokushisa lokunciphisa liyi-200-340 ° C, izinga lokushisa lokushisa liyi-330-400 ° C, futhi isikhathi sokusetha ukushisa singama-45-500 s.Ifomu le-microscopic liyi-pore ecishe ibe yindilinga (eyizingqimba noma eyindilinga).
Isikhathi sokuthumela: Jan-18-2022