Ukwethulwa kwe-ejenti ye-Foaming ye-polyurethane grom esetshenziswa emkhakheni wokwakha
Ngezidingo ezikhulayo zezakhiwo zesimanje zokulondolozwa kwamandla nokuvikelwa kwemvelo, ukusebenza kwe-infration yokufakelwa kwezinto zokwakha kuba okubaluleke kakhulu. Phakathi kwazo, i-polyurethane eqinile i-foam iyisimo esihle kakhulu sokufakelwa okushisayo, ngempahla enhle yemishini, ukusebenza okuphansi okushisayo nezinye izinzuzo, ngakho-ke kusetshenziswa kabanzi emkhakheni wokufakelwa.
Umenzeli we-Foaming ungenye yezithasiselo eziphambili ekukhiqizweni kwePolyurethane Hard Foam. Ngokwemishini yayo yesenzo, ingahlukaniswa izigaba ezimbili: Umenzeli wamakhemikhali we-Foaming kanye ne-ejenti ye-Foaming ebonakalayo.
Ukuhlukaniswa kwama-foam agents
I-ejenti ye-foam yamakhemikhali iyisengezo esikhiqiza igesi ne-foams polyurethane izinto ngesikhathi sokusabela kwe-isocyanates nama-polyols. Amanzi amele umelele we-ejenti ye-foam yamakhemikhali, ephendula ngengxenye ye-isocyanate ukwakha igesi ye-carbon dioxide, ukuze ithole i-polyurethane impahla. Umenzeli we-Foaming ongokoqobo ungezelwe ngenqubo yokukhiqiza yePolyurethane Hard Foam, efaka izinto ze-polyurethane ngezinyathelo zomzimba. Ama-ejenti we-Foam angokwenyama ikakhulukazi abilayo ama-organic compounds, njenge-hydrofluorocarboons (HFC) noma i-Alkane (HC) Compounds.
Inqubo yokuthuthuka yeI-Foam AgentKufe ngasekupheleni kwawo-1950s, inkampani yaseDuPont esebenzisa i-Trichloro-Fluoromethane (CFC-11) njenge-polyurethane yokuqina komkhiqizo, kusukela ngaleso sikhathi i-CFC-11 isetshenziswe kabanzi emkhakheni wePolyurethane Hard Foam. Njengoba i-CFC-11 ibonakale ilimaza ungqimba lwe-ozone, amazwe aseNtshonalanga Yurophu ayeka ukusebenzisa i-CFC-11 ngasekupheleni kwawo-1994, futhi i-Europe yavimba ukukhiqizwa kanye nokusetshenziswa kwe-HCFC-141B ngonyaka we-2003 nango-2004, ngokulandelana. Njengoba ukuqwashisa kwezemvelo kukhuphuka, amazwe aqala ukuthuthukisa nokusebenzisa ezinye izindlela ezinamandla okufudumeza komhlaba wonke (GWP).
Ama-HFC-Type Feam Agents asebeke bangena esikhundleni se-CFC-11 ne-HCFC-141B, kepha inani le-GWP lezinhlanganisela zohlobo lwe-HFC lisezingeni eliphakeme kakhulu, elingakufanelekeli ukuvikelwa kwemvelo. Ngakho-ke, eminyakeni yamuva nje, ukugxila kwezentuthuko kwama-Foam agents emkhakheni wezokwakha kuguqukele kwezinye izindlela eziphansi ze-GWP.
Izinzuzo Nezinzuzo Zama-Foam Agents
Njengohlobo lwendwangu yokufakelwa, i-polyurethane eqinile inezinzuzo eziningi, njengokusebenza okuhle kakhulu kokufakwa okushisayo, amandla amahle emishini, ukusebenza okuhle komsindo, impilo yesikhathi eside esizinzile nokunye.
Njengesifundo esibalulekile lapho kulungiswa i-polyurethane Foam, i-ejenti ye-Foaming inomthelela obalulekile ekusebenzeni, izindleko kanye nokuvikelwa kwemvelo kwezinto zokwehlukanisa okushisayo. Izinzuzo ze-ejenti ye-chemical Foaming ijubane elisheshayo le-foaming, i-foaming efanayo, ingasetshenziswa ebangeni elinhlobonhlobo lokushisa kanye nomswakama, ingathola isilinganiso esiphakeme samagwebu, ukuze silungiselele i-polyurethane eqinile ephezulu.
Kodwa-ke, ama-ejenti ama-chemical Foam angakhiqiza amagesi ayingozi, njengekhabhoni diokside, i-carbon monoxide kanye ne-nitrogen oxides, okwenza ukungcoliswa kwemvelo. Inzuzo ye-ejenti ye-Foam ebonakalayo ukuthi ayikhiqizi amagesi ayingozi, ingabi nomthelela omncane emvelweni, futhi ingathola usayizi omncane we-bubble kanye nokusebenza okungcono kokufakelwa. Kodwa-ke, ama-ejenti we-Foam angokwenyama anezinga eliphakeme kakhulu le-foaming futhi adinga izinga lokushisa eliphakeme nomswakama ukwenza okusemandleni abo.
Njengohlobo lwendwangu yokufakelwa, i-polyurethane eqinile inezinzuzo eziningi, njengokusebenza okuhle kakhulu kokufakwa okushisayo, amandla amahle emishini, ukusebenza okuhle komsindo, impilo yesikhathi eside esizinzile nokunye.
Njengomsebenzi obalulekile lapho kulungiswaI-Polyurethane Hard Foam, Umenzeli we-Foaming unomthelela obalulekile ekusebenzeni, izindleko kanye nokuvikelwa kwemvelo kwezinto zokwehlukanisa okushisayo. Izinzuzo ze-ejenti ye-chemical Foaming ijubane elisheshayo le-foaming, i-foaming efanayo, ingasetshenziswa ebangeni elinhlobonhlobo lokushisa kanye nomswakama, ingathola isilinganiso esiphakeme samagwebu, ukuze silungiselele i-polyurethane eqinile ephezulu.
Kodwa-ke, ama-ejenti ama-chemical Foam angakhiqiza amagesi ayingozi, njengekhabhoni diokside, i-carbon monoxide kanye ne-nitrogen oxides, okwenza ukungcoliswa kwemvelo. Inzuzo ye-ejenti ye-Foam ebonakalayo ukuthi ayikhiqizi amagesi ayingozi, ingabi nomthelela omncane emvelweni, futhi ingathola usayizi omncane we-bubble kanye nokusebenza okungcono kokufakelwa. Kodwa-ke, ama-ejenti we-Foam angokwenyama anezinga eliphakeme kakhulu le-foaming futhi adinga izinga lokushisa eliphakeme nomswakama ukwenza okusemandleni abo.
Inkambiso yentuthuko yesikhathi esizayo
Umkhuba wama-ejenti we-foaming embonini yokwakha esizayo ikakhulukazi ekwakhiweni kwe-GWP ephansi. Isibonelo, i-CO2, HFO, nezindlela zamanzi, ezine-GWP ephansi, i-zero odp, kanye nokunye ukusebenza kwezemvelo, kusetshenziswe kabanzi ekukhiqizweni kwe-polyurethane grid foam. Ngaphezu kwalokho, njengoba ubuchwepheshe bezinto ezibonakalayo bezakhiwo buqhubeka nokukhula, umenzeli we-Foaming uzothuthukisa ukusebenza okuhle kakhulu, njengokusebenza okungcono kokungenela, isilinganiso esiphakeme se-bubble, nosayizi omncane we-bubble.
Eminyakeni yamuva nje, amabhizinisi amakhemikhali afuywayo nawokwamanye amazwe aseshale ngenkuthalo futhi athuthukise ama-Fluomine ama-Fluaming agemishini aqukethe ama-Olefin (HFO) abizwa ngokuthi ama-ejenti wamandla we-Foaming wesine futhi anenzuzo ye-Fooming ebonakalayo enokuvuselelwa kwegesi okushisayo kanye nezinzuzo zemvelo.
Isikhathi Sokuthumela: Jun-21-2024