Umsebenzi oyintloko weIfilimu ye-Thermoplastic Polyurethane (TPU)ikwimeko yayo ebalaseleyo yokungena kwamanzi kunye neempawu zokufuma—ingavimba amanzi angangeni ngelixa ivumela iimolekyuli zomphunga wamanzi (ukubila, ukubila) ukuba zidlule.
1. Izalathisi zoKusebenza kunye neMigangatho
- Ukungabi namanzi (Ukuchasana noxinzelelo lwe-Hydrostatic):
- Isalathisi: Silinganisa amandla efilimu okumelana noxinzelelo lwamanzi lwangaphandle, olulinganiswa ngeekhilopascals (kPa) okanye iimilimitha zekholamu yamanzi (mmH₂O). Ixabiso eliphezulu libonisa ukusebenza okuqinileyo kokungangeni manzi. Umzekelo, impahla eqhelekileyo yangaphandle inokufuna i-≥13 kPa, ngelixa izixhobo zodidi oluphezulu zinokufuna i-≥50 kPa.
- Umgangatho woVavanyo: Uvavanywa rhoqo kusetyenziswa i-ISO 811 okanye i-ASTM D751 (iNdlela yoBust Strength). Oku kubandakanya ukunyusa uxinzelelo lwamanzi rhoqo kwelinye icala lefilimu de kuvele amaconsi amanzi kwelinye icala, kubhalwe ixabiso loxinzelelo kuloo ndawo.
- Ukufuma (Ukuhanjiswa komphunga):
- Isalathisi: Silinganisa ubunzima bomphunga wamanzi odlula kwindawo yeyunithi yefilimu ngexesha leyunithi, echazwa ngeegrama ngemitha yesikwere nganye kwiiyure ezingama-24 (g/m²/24h). Ixabiso eliphezulu libonisa ukuphefumla okungcono kunye nokuchitha umbilo. Ngokwesiqhelo, ixabiso elingaphezulu kwe-5000 g/m²/24h lithathwa njengelinokuphefumla kakhulu.
- Umgangatho woVavanyo: Kukho iindlela ezimbini eziphambili:
- Indlela yeNdebe ethe tye (iNdlela yeDesiccant): umz., i-ASTM E96 BW. I-desiccant ifakwa kwikomityi, ivalwe ngefilimu, kwaye ubungakanani bomphunga wamanzi ofunxwa phantsi kweemeko ezithile zobushushu kunye nokufuma buyalinganiswa. Iziphumo zisondele kwiimeko zokuguguleka zokwenyani.
- Indlela yeNdebe eGuquliweyo (Indlela yamanzi): umz., i-ISO 15496. Amanzi afakwa kwikomityi, eguqulwayo ize ivalwe ngefilimu, kwaye ubungakanani bomphunga wamanzi ophuma kwifilimu buyalinganiswa. Le ndlela ikhawuleza kwaye isetyenziswa rhoqo kulawulo lomgangatho.
2. Umgaqo Wokusebenza
Iimpawu zokungena kwamanzi kunye nokufuma kwamanziIfilimu yeTPUazifikelelwa ngemingxunya ebonakalayo kodwa zixhomekeke kwisenzo se-molecular-level sections zayo ze-hydrophilic chain:
- Ayingeni manzi: Ifilimu ngokwayo ixinene kwaye ayinazo iimbobo; amanzi angamanzi awakwazi ukudlula ngenxa yoxinzelelo lomphezulu wayo kunye nolwakhiwo lwemolekyuli yefilimu.
- Ukufuma Okungangeniyo: I-polymer inamaqela athanda amanzi (umz., -NHCOO-). La maqela “abamba” iimolekyuli zomphunga wamanzi eziphuma eluswini olungaphakathi. Emva koko, “ngentshukumo yecandelo” leetsheyini ze-polymer, iimolekyuli zamanzi “zidluliselwa” ngokulandelelana ukusuka ngaphakathi ukuya kwindawo engaphandle.
3. Iindlela zoVavanyo
- Isivavanyeli soxinzelelo lwe-Hydrostatic: Sisetyenziselwa ukulinganisa ngokuchanekileyo uxinzelelo lomngcipheko wokungena kwamanzi lwefilimu okanye ilaphu.
- Ikomityi yokuVumela ukufuma: Isetyenziswa kwigumbi lobushushu obungaguqukiyo kunye nomswakama ukulinganisa izinga lokudluliselwa komphunga womswakama (MVTR) kusetyenziswa indlela yekomityi ethe nkqo okanye eguquliweyo.
4. Izicelo
Ukusebenzisa ezi mpawu,Ifilimu yeTPUlukhetho olukhethwayo kwizicelo ezininzi eziphezulu:
- Impahla Yangaphandle: Eyona nto ibalulekileyo kwiijakethi eziqinileyo, iimpahla zokutyibiliza eqhweni, kunye neebhulukhwe zokuhamba ngeenyawo, ukuqinisekisa ukoma kunye nentuthuzelo kubathandi bangaphandle xa kukho umoya nemvula.
- Ukhuseleko lwezonyango: Isetyenziswa kwiingubo zotyando kunye neempahla zokuzikhusela ukuvimba igazi kunye nolwelo lomzimba (olungangeni manzi) ngelixa ivumela ukubila okuveliswa ngabasebenzi bezonyango ukuba kuphume, kunciphisa uxinzelelo lobushushu.
- Ukulwa nomlilo kunye nokuQeqeshwa koMkhosi: Ibonelela ngokhuseleko kwiindawo ezinobungozi, ezifuna ukumelana nomlilo, amanzi, kunye neekhemikhali, kunye nokuphefumla okuphezulu ukugcina ukuhamba nokusebenza.
- Izinto zeZihlangu: Zisetyenziswa njengee-socks ezihlala zingangeni manzi (ii-booties) ukugcina iinyawo zomile xa kunetha ngelixa zithintela ubushushu bangaphakathi kunye nokufuma.
Ngamafutshane, ngesakhiwo sayo esikhethekileyo somzimba kunye neekhemikhali, ifilimu yeTPU ilungelelanisa ngobuchule iimfuno ezibonakala ziphikisanayo "zokungangeni manzi" kunye "nokuphefumla," okwenza ibe yinto ebalulekileyo ebaluleke kakhulu kwicandelo leempahla zelaphu ezisebenza kakuhle.
Ixesha leposi: Sep-22-2025