“Ukuhlaziya” kunye “nokurisayiklishwa” ziingcamango ezimbini ezibalulekileyo kodwa zihlala zibhidaniswa kukhuseleko lokusingqongileyo. Xa kuziwa kwi-PU yesikhumba, iindlela zokusingqongileyo kunye nemijikelo yobomi zahluke ngokupheleleyo.
Ukushwankathela, iRenewable igxile “ekufumaneni imathiriyeli ekrwada”- apho isuka khona kwaye ingaba inokuphinda iveliswe ngokuqhubekayo. I-recyclable igxininise "kwi-product-of-life" - ingaba ingaphinda isetyenziswe kwakhona kwizinto eziluhlaza emva kokulahlwa.Ngoku siza kungena kwiinkcukacha ezithe kratya malunga nomahluko othile phakathi kwezi ngcamango zimbini njengoko zisebenza kwi-PU yesikhumba.
1. Isikhumba sePU esihlaziyiweyo (i-bio-based PU yesikhumba).
• Ingaba yin?
'Isikhumba sePU esekwe kwiBio' ligama elichaneke ngakumbi lesikhumba sePU esihlaziyekayo. Oku akuthethi ukuba yonke imveliso yenziwe kwizinto zebhayoloji. Endaweni yoko, ibhekisa kwinto yokuba ezinye zemathiriyeli ekrwada yekhemikhali ezisetyenziselwa ukuvelisa i-polyurethane zisuka kwi-biomass enokuhlaziywa endaweni ye-petroleum engahlaziyekiyo.
• Kufezwa njani 'ukuhlaziywa'?
Umzekelo, iiswekile ezivela kwizityalo ezinjengombona okanye iswekile zivundisiwe kusetyenziswa itekhnoloji ukuvelisa i-bio-based chemical intermediates, njengepropylene glycol. Ezi ziphakathi ziye zenziwa zibe yi-polyurethane. Isiphumo sesikhumba sePU siqulathe umlinganiselo othile 'we-bio-based carbon'. Ipesenti echanekileyo iyahluka: iimveliso kwiimarike zivela kwi-20% ukuya kwi-60% ye-bio-based content, kuxhomekeke kwiziqinisekiso ezithile.
2. Isikhumba sePU esinokuphinda sisetyenziswe
• Ingaba yin?
Ufele lwePU olunokurisayiklishwa lubhekiselele kwizinto zePU ezinokufunyanwa ngeendlela zomzimba okanye zekhemikhali emva kokulahlwa kwaye ziphinde zisetyenziswe ukuvelisa iimveliso ezintsha.
• Kuphunyezwa njani “ukwenziwa ngokutsha”?
Ukwenziwa ngokutsha ngokwaseMzimbeni: Inkunkuma yePU iyacolwa kwaye igaywe ibe ngumgubo, emva koko ixutywe njengefayili kwiPU entsha okanye ezinye izinto. Nangona kunjalo, oku kuthoba isidima iipropathi zemathiriyeli kwaye kuthathwa njengokuthotyiweyo ngokutsha.
Ukuhlaziywa kweMichiza: Ngetekhnoloji ye-depolymerization yeekhemikhali, iimolekyuli zomxokelelwane omde we-PU zohlulwa zibe ziikhemikhali ezisisiseko okanye ezitsha ezinje ngepolyols. Ezi zinto ke zinokuthi zisetyenziswe njengezixhobo ezingekabinamsebenzi ukwenza iimveliso zePU ezikumgangatho ophezulu. Oku kubonisa indlela ehambele phambili ngakumbi yokuphinda kusetyenziswe i-loop-loop.
Ubudlelwane phakathi kwezi Zimbini: Abubodwa, Bunokudityaniswa
Eyona mathiriyeli ifanelekileyo i-eco-friendly inazo zombini iimpawu “ezinokuhlaziywa” kunye “nezinokuphinda zisetyenziswe”. Ngapha koko, itekhnoloji ihambela phambili kweli cala.
Imeko 1: Yemveli (Ayinakuphinda ihlaziyeke) ukanti iyasetyenzwa
Iveliswe kusetyenziswa izinto ezikrwada ezisekwe kwipetroleum kodwa yenzelwe ukuphinda isetyenziswe kwikhemikhali. Oku kuchaza imeko yangoku “yolusu lwePU olunokuphinda lusetyenziswe.”
Imeko yesi-2: Iyahlaziyeka kodwa ayinakurisayikilishwa
Iveliswe kusetyenziswa imathiriyeli ekrwada esekwe kwibhayoloji, kodwa uyilo lwesakhiwo semveliso lwenza kubenzima ukurisayikilishwa okusebenzayo. Ngokomzekelo, ibotshelelwe ngokuqinileyo kwezinye izinto, okwenza kube nzima ukuhlukana.
Imeko yesi-3: IyaHlaziywa kwakhona kwaye inokurisayikilisha (Ilizwe elilungileyo)
Iveliswe kusetyenziswa imathiriyeli ekrwada esekwe kwibhayoloji kwaye iyilelwe ukurisayikilishwa ngokulula. Ngokomzekelo, i-PU ye-thermoplastic ye-material enye eyenziwe kwi-bio-based feedstocks inciphisa ukusetyenziswa kobutyebi be-fossil ngelixa ingena kwi-loop yokuphinda isetyenziswe emva kokulahlwa. Oku kubonisa i-paradigm yokwenyani ye-"Cradle to Cradle".
Isishwankathelo kunye neeNgcebiso zokuKhetha:
Xa usenza ukhetho lwakho, unokugqiba ngokusekelwe kwizinto eziphambili zokusingqongileyo:
Ukuba unenkxalabo ngakumbi malunga nokunciphisa ukusetyenziswa kwamafutha efosili kunye nokukhutshwa kwegesi ye-greenhouse, kufuneka ugxininise "kwisikhumba esihlaziyiweyo / se-bio-based PU" kwaye ukhangele isatifikethi se-bio-based content.
Ukuba uzixhalabise ngakumbi ngempembelelo yokusingqongileyo ekupheleni komjikelo wobomi bemveliso kwaye uthintele ukulahlwa kwenkunkuma, kufuneka ukhethe “isikhumba sePU esinokuphinda sisetyenziswe” kwaye uqonde iindlela zayo zokurisayikilisha nokuba nokwenzeka.
Olona khetho lufanelekileyo kukufuna iimveliso ezidibanisa zombini umxholo ophezulu we-bio-based kunye neendlela ezicacileyo zokuphinda zisetyenziswe, nangona ukhetho olunjalo luhlala lunqongophele kwimarike yangoku.
Ngethemba, le ngcaciso ikunceda ukuba uhlukanise ngokucacileyo phakathi kwala magama mabini abalulekileyo.
Ixesha lokuposa: Oct-31-2025
