Izici Zobuchwepheshe Zokufutha Kwensimu Yegwebu Eliqinile Le-Polyurethane
I-Rigid Foam polyurethane (PU) insulation material iyipolymer eneyunithi yesakhiwo ephindaphindayo yengxenye ye-carbamate, eyakhiwe ukusabela kwe-isocyanate ne-polyol. Ngenxa yokushisa kwayo okuhle kakhulu nokusebenza okungangeni kwamanzi, ithola ukusetshenziswa okubanzi odongeni lwangaphandle nokufakwa ophahleni, kanye nesitoreji esibandayo, izindawo zokugcina okusanhlamvu, amagumbi okugcina umlando, amapayipi, iminyango, amafasitela nezinye izindawo ezikhethekile zokushisa okushisayo.
Njengamanje, ngaphandle kokufakwa kophahla kanye nezicelo zokuvikela amanzi, iphinde isebenze ngezinhloso ezahlukahlukene njengezindawo zokugcina ezibandayo kanye nokufakwa kwamakhemikhali amakhulu kuya kosayizi ophakathi.
Ubuchwepheshe obubalulekile bokwakhiwa kwesifutho se-foam polyurethane esiqinile
Ubungcweti bobuchwepheshe bokufafaza be-foam polyurethane obuqinile bubeka izinselele ngenxa yezinkinga ezingaba khona njengezimbobo zegwebu ezingalingani. Kubalulekile ukuthuthukisa ukuqeqeshwa kwezisebenzi zokwakha ukuze zikwazi ukuphatha kahle izindlela zokufafaza futhi zixazulule ngokuzimela izinkinga zobuchwepheshe ezihlangabezene nazo ngesikhathi sokwakha. Izinselelo zobuchwepheshe eziyinhloko ekwakhiweni kokufafaza zigxile kakhulu kulezi zici ezilandelayo:
Lawula phezu kwesikhathi sokwenza mhlophe kanye nomphumela we-atomization.
Ukwakhiwa kwegwebu le-polyurethane kuhilela izigaba ezimbili: ukugwetshwa nokuphulukisa.
Kusukela esigabeni sokuxuba kuze kuphele ukunwetshwa kwevolumu yegwebu - le nqubo yaziwa ngokuthi igwebu. Phakathi nalesi sigaba, ukufana ekusabalaliseni kwembobo yebhamuza kufanele kucatshangelwe lapho inani elikhulu le-ester eshisayo esebenzayo likhishwa ohlelweni ngesikhathi sokufafaza. Ukufana kwebhamuza ngokuyinhloko kuncike ezintweni ezifana nalezi:
1. Ukuchezuka kwesilinganiso sokubalulekile
Kunokwehluka okukhulu kokuminyana phakathi kwamabhamuza akhiqizwa umshini uma kuqhathaniswa nalawo akhiqizwa mathupha. Ngokuvamile, izilinganiso zezinto ezingaguquki ngomshini zingu-1:1; nokho ngenxa yamazinga ahlukahlukene e-viscosity phakathi kwezinto ezimhlophe zabakhiqizi abahlukene - izilinganiso zangempela zempahla kungenzeka zingahambelani nalezi zilinganiso ezingaguquki eziholela ekuhlukeni kokuminyana kwegwebu okusekelwe ekusetshenzisweni kwezinto ezimhlophe noma ezimnyama ngokweqile.
2.Izinga lokushisa elizungezile
Amagwebu e-polyurethane azwela kakhulu ekushintshashintsheni kwezinga lokushisa; inqubo yabo yokukhipha amagwebu incike kakhulu ekutholakaleni kokushisa okuvela kukho kokubili ukusabela kwamakhemikhali ngaphakathi kwesistimu ngokwayo kanye nezinhlinzeko zemvelo.
Uma amazinga okushisa e-ambient ephakeme ngokwanele ekuhlinzekeni ukushisa kwemvelo - isheshisa isivinini sokusabela okuholela ekukhulisweni kwamagwebu anokuminyana okungaguquguquki kokusuka endaweni kuya komgogodla.
Ngokuphambene emazingeni okushisa aphansi (isb., ngaphansi kuka-18°C), okunye ukushisa okusabelayo kuhlakazeka endaweni ezungezile kubangela izikhathi zokuphulukisa ezinde kanye nokukhuphuka kwamazinga okuncipha okubumba ngaleyo ndlela kukhuphule izindleko zokukhiqiza.
3.Umoya
Ngesikhathi sokufafaza isivinini somoya kufanele sihlale singaphansi kuka-5m/s; okweqa lo mkhawulo kuphephula ukushisa okukhiqizwa ukusabela okuthinta ukukhihliza amagwebu ngokushesha kuyilapho kwenza indawo yomkhiqizo ibe bushelelezi.
4.Base izinga lokushisa & nomswakama
Amazinga okushisa aphansi odongeni athonya kakhulu ukusebenza kahle kogwebu lwe-polyurethane phakathi nezinqubo zohlelo lokusebenza ikakhulukazi uma izinga lokushisa le-ambient & base wall liphansi - ukumuncwa ngokushesha kwenzeka ngemva kokumbozwa kokuqala kunciphisa isivuno sezinto ezibonakalayo.
Ngakho-ke ukunciphisa izikhathi zokuphumula kwasemini phakathi nokwakhiwa okuhambisana nezinhlelo zokuhlela zamasu kubalulekile ukuze kuqinisekiswe amazinga okukhula okuqinile kwe-foam polyurethane.
I-Rigid Polyurethane Foam imele umkhiqizo we-polymer owenziwe ngokusabela phakathi kwezingxenye ezimbili - i-Isocyanate ne-Polyether ehlanganisiwe.
Izingxenye ze-Isocyanate zisabela kalula ngamabhondi e-urea akhiqiza amanzi; ukwanda kokuqukethwe kwebhondi ye-urea kwenza amagwebu abe ngumphumela abe brittle kuyilapho kuncipha ukunamathelana phakathi kwawo nama-substrates yingakho kudingeke ukuthi indawo eyomile ehlanzekile ingabi nokugqwala/uthuli/umswakama/ukungcola ikakhulukazi kugwenywe izinsuku zokuna kwemvula lapho ukuba khona kwamazolo/isithwathwa kudinga ukususwa okulandelwa ukomiswa ngaphambi kokuqhubeka.
Isikhathi sokuthumela: Jul-16-2024