umthengiselo wemodeli yePU olunqanawa kakhulu ngeendlela zokuthanda
I-agent yokukhulula isikhunta se-PU esimelana nokushisa okuphezulu yisixazululo sezimboni esithuthukile esenzelwe ngokukhethekile izinqubo zokubumba i-polyurethane ezisebenza ngaphansi kwezimo zokushisa ezibucayi. Leli fomu elikhethekile lenza isithiyo esiphumelelayo phakathi kobuso besikhunta nezinto ze-polyurethane, okuqinisekisa ukukhululwa okuhlanzekile nokusebenzayo kuyilapho kugcinwa ukuqina kwesakhiwo emazingeni okushisa aphakeme. Lesi sidakamizwa sinesakhiwo esiyingqayizivele samangqamuzana esihlala sizinzile emazingeni okushisa aphezulu, ngokuvamile asukela ku-200°C kuya ku-300°C, ngaphandle kokubola noma ukubola kwamakhemikhali. Ihlanganisa ubuchwepheshe obuphambili bokubambelela ebusweni obuvumela ukumbozwa okuhle nokunamathiselwa ebusweni besikhunta ngenkathi kuvimbela impahla ye-polyurethane ekubambeni. Ukwakheka kwe-agent yokukhulula kuhlanganisa ama-polymers azinzile ekushiseni nezithasiselo ezikhethekile ezisebenza ndawonye ukuze zinikeze ukusebenza okuhambisanayo kuyo yonke imijikelezo eminingi yokubumba, kunciphise isikhathi sokuphumula kokukhiqiza futhi kwandise impilo yesikhunta. Lo mkhiqizo ohlukahlukene uthola ukusetshenziswa ezimbonini ezihlukahlukene, kuhlanganise nokukhiqizwa kwezingxenye zezimoto, ukukhiqizwa kwemishini yezimboni, kanye nokukhiqizwa kwezingxenye ezikhethekile ze-polyurethane.