Iyini indlela yokusebenza kwama-Amine Catalysts ku-Polyurethane?
Ama-catalyst e-amineZiyingxenye ebalulekile yokukhiqizwa kwe-polyurethane futhi ziyizisheshisi ezibalulekile ezisheshisa kakhulu ukusabela phakathi kwama-polyol nama-isocyanates (i-feedstock eyinhloko yokukhiqizwa kwe-polyurethane foam), zilawula futhi zilinganise ukusabela kwejeli kanye nokusabela kwegesi noma kwe-foam okwakha i-foam. Zenza lokhu ngokunciphisa amandla okusebenza adingekayo ekuphenduleni kwamakhemikhali, okuholela ekukhuleni nasekuqineni kwe-foam okusheshayo nokulawulwa kakhudlwana. Ama-catalyst e-amine asebenza kahle kakhulu ngoba ahlanganyela ngenkuthalo ekuphenduleni, amaqembu okusabela esakhiweni sawo sama-molecule angasebenzisana nama-isocyanates, kanti ama-catalyst e-amine ngokuvamile akha phakathi kuka-0.1% no-5.0% we-polyurethane formulations. Le mpahla eyingqayizivele ibenza bakwazi ukubopha kuma-polyisocyanates, bazinzise i-polyurethane matrix yokugcina futhi baqinisekise ukunamathela kwayo ku-substrate.
Inqubo yokuvuselela ye-amine catalyst ku-polyurethane foam ikhuthaza kakhulu ukusabela okubili okuyinhloko: ukusabela kwe-polyol-isocyanate (ukwakheka kwezibopho ze-carbamate) kanye nokusabela kwe-isocyanate-water (ukukhiqizwa kwe-carbon dioxide). Ukusabela kwakamuva kukhiqiza amabhamuza, okwakha isakhiwo seseli se-foam. Ngalesi senzo esikabili, i-amine catalyst ivumela inqubo elinganiselayo yokuqhuma nokupholisa, okuqinisekisa ukuthi i-foam iyanda ngokulinganayo ngenkathi iqina ibe isakhiwo esizinzile. Ama-catalyst anjengeI-MXC-70futhi inikeza ijika lokusabela elibushelelezi eliya phezulu, okusho ukuthi likhuthaza ukwanda kancane kancane kwe-viscosity ye-foam. Lokhu kuphumela esakhiweni sezinyosi esilawulwa kakhulu nesifanayo esisiza ukuthuthukisa ukuqina nokuqina kwe-foam.
Insimu Yokusetshenziswa Kwe-Amine Catalysts
Ama-catalyst e-amine asetshenziswa ezinhlobonhlobo zezicelo ze-polyurethane, kufaka phakathi ama-foam athambile naqinile, ama-elastomer, ama-coating, ama-adhesive, nama-sealant. Ekukhiqizweni kwama-foam athambile, asiza ekufinyeleleni ubumnene nokunwebeka okufiselekayo, okwenza kube kuhle kakhulu kuma-cushion efenisha, izinto zokulala kanye nezihlalo zezimoto. Ekusetshenzisweni kwama-foam aqinile, njengamaphaneli okushisa, izinto zikagesi, kanye nama-spray foam, ama-catalyst e-amine akhuthaza izakhiwo zamaseli avaliwe ezinobukhulu obuphezulu ezithuthukisa ukushisa nokuqina kobukhulu.
Ama-catalyst e-amine afana ne-MXC-70 afaneleka kakhulu ekusetshenzisweni okubucayi ngenxa yezakhiwo zawo eziphansi zephunga nokukhishwa okuncane komoya. Emishinini yasekhaya, athuthukisa ukunamathela ezisekelweni zensimbi nepulasitiki, okubalulekile ekufakweni komoya. Kuma-foam okufuthayo namabhokisi, la ma-catalyst avumela ukwandiswa kwe-foam okuphumelelayo nokunamathela esisekelweni ngenkathi kunciphisa amaphunga asele kanye nokukhishwa komoya futhi kuhlangabezana nezindinganiso zemvelo nezomthetho.
Sekukonke, ukuguquguquka nokusebenza kahle kwama-catalyst e-amine kuwenza abe yingxenye ebalulekile ezimbonini ezidinga ukufakelwa kwe-polyurethane, ukugoqa, kanye nezakhiwo zokubopha. I-Mingxu Chemical Company ibilokhu ikhiqiza ama-catalyst e-polyurethane iminyaka engaphezu kwengu-20, sinendlela yenqubo engcono kakhulu kanye nethimba lochwepheshe lokuthuthukisa nokuvuselela imikhiqizo ye-catalyst emakethe, sinomthombo omkhulu, amakhasimende amukelekile ukuza ukuzobonisana.
Isikhathi sokuthunyelwe: Okthoba-29-2024