"Okuvuselelekayo" kanye "nokuphinda kusetshenziswe kabusha" yimibono emibili ebalulekile kodwa evame ukudideka ekuvikelweni kwemvelo. Uma kukhulunywa ngesikhumba se-PU, izindlela zemvelo nemijikelezo yempilo zihluke ngokuphelele.
Ukufingqa, I-Renewable igxile "ekutholeni impahla eluhlaza" - lapho ivela khona nokuthi ingagcwaliswa yini ngokuqhubekayo. I-recyclable igxile "ekupheleni kwempilo yomkhiqizo" - kungakhathaliseki ukuthi ingaphinda isetshenziswe kabusha entweni yokusetshenziswa ngemva kokulahlwa. Manje sizongena emininingwaneni eyengeziwe mayelana nomehluko othize phakathi kwale miqondo emibili njengoba isebenza esikhumbeni se-PU.
1. Isikhumba se-PU esivuselelekayo (isikhumba se-PU esisekelwe ku-bio).
• Kwenzenjani?
I-'Bio-based PU leather' yitemu elinembe kakhudlwana lesikhumba se-PU esivuselelekayo. Akusho ukuthi wonke umkhiqizo wenziwa ngezinto eziphilayo. Kunalokho, kubhekisela eqinisweni lokuthi ezinye zezinto zokusetshenziswa zamakhemikhali ezisetshenziselwa ukukhiqiza i-polyurethane zisuka ku-biomass evuselelekayo esikhundleni sika-petroleum ongavuseleleki.
• Kufezwa kanjani 'okuvuselelekayo'?
Isibonelo, ushukela ovela ezitshalweni ezinjengommbila noma umoba uvutshelwa kusetshenziswa ubuchwepheshe ukuze kukhiqizwe i-bio-based chemical intermediates, njenge-propylene glycol. Lawa ma-intermediate abe esehlanganiswa abe yi-polyurethane. Isikhumba se-PU esiwumphumela siqukethe ingxenye ethile 'ye-bio-based carbon'. Iphesenti eliqondile liyahlukahluka: imikhiqizo esemakethe isukela ku-20% iye ngaphezu kuka-60% wokuqukethwe okusekelwe ku-bio, kuye ngezitifiketi ezithile.
2. Isikhumba se-PU Esigaywa kabusha
• Kwenzenjani?
Isikhumba se-PU esigaywa kabusha sibhekisela ezintweni ze-PU ezingatholakala ngezindlela ezingokwenyama noma zamakhemikhali ngemva kokulahlwa futhi ziphinde zisetshenziswe ukukhiqiza imikhiqizo emisha.
• Kufinyelelwa kanjani “ekusetshenzisweni kabusha”?
Ukugaywa Kabusha Okungokwenyama: Imfucuza ye-PU iyachotshozwa futhi igaywe ibe yimpushana, bese ixutshwa njengesigcwalisi ku-PU entsha noma ezinye izinto. Nokho, lokhu ngokuvamile kwehlisa izinga lempahla futhi kuthathwa njengokugaywe kabusha okwehlisiwe.
Ukugaywa Kabusha Kwamakhemikhali: Ngobuchwepheshe bekhemikhali be-depolymerization, ama-molecule amaketanga amade e-PU ahlukaniswa abe amakhemikhali ayisisekelo okuqala noma amasha njengama-polyols. Lezi zinto zingasetshenziswa njengezinto ezingavuthiwe zokukhiqiza imikhiqizo yekhwalithi ephezulu ye-PU. Lokhu kumelela uhlobo oluthuthuke kakhulu lokugaywa kabusha kweluphu evaliwe.
Ubudlelwano Phakathi Kwalokhu Okubili: Abuhlukani, Bungahlanganiswa
Okubalulekile okuhle kakhulu kwe-eco-friendly kunezinto zombili “ezivuselelekayo” kanye “neziphinde zisetshenziswe kabusha”. Eqinisweni, ubuchwepheshe buthuthuka ngale ndlela.
Isimo 1: Okuvamile (Akuvuseleleki) Kodwa Kuyasebenziseka Kabusha
Ikhiqizwe kusetshenziswa izinto zokusetshenziswa ezisuselwa ku-petroleum kodwa zenzelwe ukugaywa kabusha kwamakhemikhali. Lokhu kuchaza isimo samanje “sezikhumba ze-PU ezigaywa kabusha.”
Isimo sesi-2: Iyavuseleleka Kodwa Ayisebenzi Kabusha
Ikhiqizwe kusetshenziswa izinto zokusetshenziswa ezisuselwa ku-bio, kodwa ukwakheka kwesakhiwo somkhiqizo kwenza ukugaywa kabusha okusebenzayo kube nzima. Isibonelo, iboshelwe ngokuqinile kwezinye izinto, okwenza ukuhlukana kube inselele.
Isimo sesi-3: Iyavuseleleka futhi Iyasebenziseka Kabusha (Isimo Esikahle)
Ikhiqizwe kusetshenziswa izinto zokusetshenziswa ezisuselwa ku-bio futhi yakhelwe ukugaywa kabusha kalula. Isibonelo, i-PU ye-thermoplastic ye-single-material eyenziwe ngokuphakelayo okusekelwe ku-bio yehlisa ukusetshenziswa kwensiza yezinto ezimbiwa phansi ngenkathi ingena ku-loop yokugaywa kabusha ngemva kokulahlwa. Lokhu kumelela ipharadigm yeqiniso ethi "Cradle to Cradle".
Isifinyezo kanye Nezincomo Zokukhetha:
Lapho wenza ukukhetha kwakho, unganquma ngokusekelwe kokubalulekile kwakho kwezemvelo:
Uma ukhathazeke kakhulu ngokunciphisa ukusetshenziswa kukaphethiloli kanye nokukhishwa kwegesi ebamba ukushisa, kufanele ugxile “esikhumbeni se-PU esivuselelekayo/esuselwe ku-bio” futhi uhlole ukuqinisekiswa kokuqukethwe kwayo okusekelwe ku-bio.
Uma ukhathazeke kakhulu ngomthelela wemvelo ekupheleni komjikelezo wempilo yomkhiqizo futhi ugwema ukulahlwa kwezindawo zokulahla imfucumfucu, kufanele ukhethe “isikhumba se-PU esigaywa kabusha” futhi uqonde izindlela zaso zokugaywa kabusha kanye nokuba nokwenzeka.
Inketho ekahle kakhulu ukufuna imikhiqizo ehlanganisa kokubili okuqukethwe okuphezulu okusekelwe ku-bio nezindlela ezicacile zokugaywa kabusha, nakuba izinketho ezinjalo zihlala ziyindlala emakethe yamanje.
Ngethemba, le ncazelo ikusiza ukuthi uhlukanise ngokucacile phakathi kwale miqondo emibili ebalulekile.
Isikhathi sokuthumela: Oct-31-2025
