IiPropathi zeTPU zeFilimu ezingangenwa ngamanzi kunye nokufuma-kuMntuma

Umsebenzi ongundoqo weIfilimu ye-Thermoplastic Polyurethane (TPU).ilele kwiimpawu zayo ezikhethekileyo zokungangeni kwamanzi kunye nokufuma-ukufuma-inokuthintela amanzi angamanzi ukuba angangeni ngelixa ivumela iimolekyuli zomphunga wamanzi (ukubila, ukubila) ukuba zidlule.

1. Izalathisi zokuSebenza kunye neMigangatho

1. Ukungangeni manzi (Hydrostatic Pressure Resistance):
   • Isalathisi: Ilinganisa ukukwazi kwefilimu ukuchasana noxinzelelo lwamanzi lwangaphandle, olulinganiswa ngeekhilopascals (kPa) okanye iimilimitha zekholamu yamanzi (mmH₂O). Ixabiso eliphezulu libonisa ukusebenza okunamandla kokuthintela amanzi. Umzekelo, iimpahla zangaphandle eziqhelekileyo zinokufuna ≥13 kPa, ngelixa izixhobo zodidi oluqeqeshiweyo zinokufuna ≥50 kPa.
   • Umgangatho woVavanyo: Ngokuqhelekileyo kuvavanywa kusetyenziswa i-ISO 811 okanye i-ASTM D751 (iNdlela yokuGqama amandla). Oku kubandakanya ukunyusa ngokuqhubekayo uxinzelelo lwamanzi kwelinye icala lefilimu de amaconsi amanzi avele kwelinye icala, ukurekhoda ixabiso loxinzelelo kuloo ndawo.
2. Ukunyibilika kokufuma (uThutho loMphunga):
   • Isalathisi: Ilinganisa ubunzima bomphunga wamanzi odlula kwindawo yeyunithi yefilim ngexesha leyunithi, ebonakaliswa ngeegram ngesikwere semitha ngeeyure ezingama-24 (g/m²/24h). Ixabiso eliphezulu libonisa ukuphefumla okungcono kunye nokuchithwa kombilo. Ngokwesiqhelo, ixabiso elingaphezulu kwe-5000 g/m²/24h lithathwa ngokuba liphefumla kakhulu.
   • Umgangatho woVavanyo: Zimbini iindlela eziphambili ezikhoyo:
     • Indlela yeNdebe eLungileyo (iNdlela yeDesiccant): umzekelo, i-ASTM E96 BW. I-desiccant ifakwe kwikomityi, ivalwe kunye nefilimu, kwaye ubuninzi bomphunga wamanzi obufakwe phantsi kweemeko ezithile zokushisa kunye nomswakama ulinganiswa. Iziphumo zisondele kwiimeko zokwenyani zokunxiba.
     • Indlela ye-Inverted Cup (Indlela yaManzi): umz., ISO 15496. Amanzi afakwa kwikomityi, ethi iguqulwe kwaye ivalwe ngefilimu, kwaye ubungakanani bomphunga wamanzi ophuma ngumphunga ngefilimu uyalinganiswa. Le ndlela ikhawuleza kwaye isoloko isetyenziselwa ukulawula umgangatho.

2. UmGaqo wokuSebenza

Iipropathi zokungena manzi kunye nokufuma-ukuvunywa kweTPU ifilimuazifezekiswanga ngeepores ezibonakalayo kodwa zixhomekeke kwintshukumo yemolekyuli yecandelo layo le-hydrophilic chain:

• Ukungangeni manzi: Ifilimu ngokwayo ixinene kwaye ayinapore; amanzi alulwelo akakwazi ukudlula ngenxa yoxinzelelo lwawo kumphezulu kunye nokwakheka kweemolekyuli zefilimu.
• Ubumanzi obunempembelelo: Ipolymer iqulethe amaqela e-hydrophilic (umzekelo, -NHCOO-). La maqela "abamba" iimolekyuli zomphunga wamanzi eziphuma esikhumbeni ngaphakathi. Emva koko, ngokusebenzisa "intshukumo yecandelo" yamaketanga e-polymer, iamolekyu zamanzi zihamba ngesinyathelo-nge-nyathelo "zidluliselwe" ukusuka ngaphakathi ukuya kwindawo yangaphandle.

3. Iindlela zoVavanyo

1. I-Hydrostatic Pressure Tester: Isetyenziselwa ukulinganisa ngokuchanekileyo umlinganiselo wokungangeni kwamanzi kwifilimu okanye ilaphu.
2. I-Moisture Permeability Cup: Isetyenziswa ngaphakathi kwegumbi lobushushu elingaguqukiyo kunye negumbi lokufuma ukulinganisa izinga lokuhambisa umphunga (MVTR) usebenzisa indlela yekomityi ethe tye okanye eguquliweyo.

4. Izicelo

Ukusebenzisa ezi zakhiwo,TPU ifilimulolona khetho lukhethiweyo kwizicelo ezininzi eziphezulu:

• Isinxibo saNgaphandle: Inxalenye ephambili kwiijacket ze-hardshell, ukunxiba kwe-ski, kunye neebhulukhwe zokukhwela intaba, iqinisekisa ukoma kunye nentuthuzelo kwabo bathanda ngaphandle emoyeni nasemvuleni.
• Ukhuseleko lwezoNyango: Ukusetyenziswa kwiingubo zotyando kunye nempahla yokukhusela ukuvala igazi kunye nolwelo lomzimba (ukungangeni manzi) ngelixa uvumela ukubila okwenziwa ngabasebenzi bezonyango ukubaleka, ukunciphisa uxinzelelo lobushushu.
• Ukunxiba koMlilo kunye noQeqesho loMkhosi: Ukubonelela ngokhuseleko kwiindawo eziphakamileyo, ezifuna ukuchasana nomlilo, amanzi, kunye neekhemikhali, kunye nokuphefumla okuphezulu ukugcina ukuhamba kunye nokusebenza.
• Izixhobo zezihlangu: Isetyenziswa njengee-sock liners ezingangeni manzi (iibhutsi) ukugcina iinyawo zomile kwiimeko zemvula ngelixa zikhusela ubushushu bangaphakathi kunye nokwakhiwa kokufuma.

Isishwankathelo, ngesakhiwo sayo esikhethekileyo somzimba kunye neekhemikhali, ifilimu ye-TPU ilungelelanisa ngobuchule iimfuno ezibonakala ziphikisana "zokungenamanzi" kunye "nokuphefumla," okwenza kube yinto eyimfuneko ebalulekileyo kwibala lempahla esebenza kakhulu.