Umsebenzi owumongo weIfilimu ye-Thermoplastic Polyurethane (TPU).ilele ezicini zayo ezingavamile ezingangeni manzi futhi zikwazi ukungena kumswakama—ingavimba amanzi awuketshezi ukuba angangeni kuyilapho ivumela ama-molecule omhwamuko wamanzi (umjuluko, umjuluko) ukuba adlule.
1. Izinkomba Zokusebenza Namazinga
- Ukungangeni kwamanzi (Hydrostatic Pressure Resistance):
- Inkomba: Ikala ikhono lefilimu lokumelana nokucindezela kwamanzi kwangaphandle, kukalwa ngama-kilopascals (kPa) noma amamilimitha ekholomu yamanzi (mmH₂O). Inani eliphakeme libonisa ukusebenza okuqinile kokuvikela amanzi. Isibonelo, izingubo zangaphandle ezivamile zingase zidinge u-≥13 kPa, kuyilapho okokusebenza kwezinga lochwepheshe kungase kudinge ≥50 kPa.
- Izinga Lokuhlola: Ivamise ukuhlolwa kusetshenziswa i-ISO 811 noma i-ASTM D751 (i-Burst Strength Method). Lokhu kuhilela ukukhulisa ukucindezela kwamanzi ngokuqhubekayo ohlangothini olulodwa lwefilimu kuze kube yilapho amaconsi amanzi avela ngakolunye uhlangothi, ukurekhoda inani lokucindezela ngaleso sikhathi.
- Umswakama Wokungena (Ukudluliswa Kwe-Vapor):
- Inkomba: Ikala isisindo somusi wamanzi odlula endaweni yeyunithi yefilimu ngesikhathi seyunithi, evezwa ngamagremu imitha yesikwele ngamahora angama-24 (g/m²/24h). Inani eliphakeme libonisa ukuphefumula okungcono kanye nokushabalala komjuluko. Ngokuvamile, inani elingaphezu kuka-5000 g/m²/24h lithathwa njengelingaphefumula kakhulu.
- Izinga Lokuhlola: Kunezindlela ezimbili eziyinhloko:
- Indlela Yendebe Eqondile (Indlela Ye-Desiccant): isb, i-ASTM E96 BW. I-desiccant ifakwa enkomishini, ivalwe ngefilimu, futhi inani lomhwamuko wamanzi elimuncwa ngaphansi kwezimo ezithile zokushisa nezimo zomswakama liyalinganiswa. Imiphumela iseduze nezimo zangempela zokugqoka.
- Indlela Yendebe Eguquliwe (Indlela Yamanzi): isb, ISO 15496. Amanzi afakwa enkomishini, eguquliwe futhi ivalwe ngefilimu, futhi nenani lomhwamuko ohwamukayo ngefilimu liyalinganiswa. Le ndlela iyashesha futhi ivame ukusetshenziselwa ukulawula ikhwalithi.
2. Isimiso Sokusebenza
Izakhiwo ezingangeni manzi futhi ezinomswakama-permeable ofTPU ifilimuazifinyelelwa ngezimbotshana ezibonakalayo kodwa zincike esenzweni se-molecular-level of hydrophilic chain chain:
- Ingangeni manzi: Ifilimu ngokwayo iminyene futhi ayinazo izimbotshana; amanzi awuketshezi awakwazi ukudlula ngenxa yokudonsa kwawo phezulu kanye nesakhiwo samangqamuzana efilimu.
- Umswakama Ovumelekile: I-polymer iqukethe amaqembu e-hydrophilic (isb, -NHCOO-). Lawa maqembu "abamba" ama-molecule omhwamuko wamanzi ahwamukayo esikhumbeni ngaphakathi. Khona-ke, ngokusebenzisa "ukunyakaza kwengxenye" yamaketanga e-polymer, ama-molecule wamanzi "adluliswa" ngesinyathelo ngesinyathelo kusukela ngaphakathi kuya endaweni yangaphandle.
3. Izindlela Zokuhlola
- I-Hydrostatic Pressure Tester: Isetshenziselwa ukulinganisa ngokunembile ukucindezela komkhawulo ongangeni manzi wefilimu noma indwangu.
- I-Moisture Permeability Cup: Isetshenziswa ngaphakathi kwegumbi lokushisa elingashintshi kanye nomswakamo ukukala izinga lokudlulisa umhwamuko (MVTR) kusetshenziswa indlela yenkomishi eqondile noma ehlanekezelwe.
4. Izicelo
Ukusebenzisa lezi zakhiwo,TPU ifilimuinketho ekhethwayo yezinhlelo zokusebenza eziningi ezisezingeni eliphezulu:
- Izingubo Zangaphandle: Ingxenye engukhiye kumajakhethi aqinile, ukushushuluza, namabhulukwe okugibela izintaba, okuqinisekisa ukoma nokunethezeka kwabathanda ngaphandle emoyeni nasemvuleni.
- Ukuvikelwa Kwezokwelapha: Kusetshenziswa ezimpahleni zokuhlinzwa nezingubo zokuzivikela ukuze kuvinjwe igazi noketshezi lomzimba (okungangeni manzi) kuyilapho kuvumela umjuluko okhiqizwa abasebenzi bezokwelapha ukuba uphume, kunciphisa ingcindezi yokushisa.
- Izingubo Zokulwa Nomlilo Nokuqeqeshwa Kwezempi: Inikeza ukuvikeleka ezindaweni ezimbi kakhulu, ezidinga ukumelana nomlilo, amanzi, namakhemikhali, okuhambisana nokuphefumula okuphezulu ukuze kugcinwe ukuhamba nokusebenza.
- Izimpahla zezicathulo: Isetshenziswa njengamalayini amasokisi angangeni manzi (amabhuzu) ukugcina izinyawo zomile ezimeni zemvula kuyilapho kuvimbela ukushisa kwangaphakathi nokwakheka komswakama.
Kafushane, ngesakhiwo sayo esiyingqayizivele somzimba namakhemikhali, ifilimu ye-TPU ibhalansisa ngekhono izidingo ezibonakala zingqubuzana "zokuvikela amanzi" kanye "nokuphefumula," okuyenza ibe yinto ebalulekile ebaluleke kakhulu emkhakheni wezindwangu ezisebenza kahle kakhulu.
Isikhathi sokuthumela: Sep-22-2025