umphawuli wemfomu yePU esikhishweni kwisezintsha zokuhluhla amafutha
Izimodi ze-PU eziphakeme zokukhupha izimoto zokugcina izintaba kumongo wokugcina izintaba kuyizimo ezithuthukile zezinhlelo ezenziwa ngokuthi zenzeke ukukhupha okulula kwezinto zepoliyurethane ukusuka kuzindlela nokubala bezemfundo. Lezi zimodi ezibucayi zisebenza njengesicelo esibalulekile phakathi kwezinto zepolifomu nezintando zemetal yekufakwa kwemfundo yokwakhiwa kwamathuba okugcina izintaba. Umsebenzi wokugcina we-rigid pu foam release agent kumongo wokugcina izintaba uyakhiqiza isihlalo esiphatha singaphinde simenyekise ukunyakwa kwegesi, ngelikahle sikhombisa imali yesilumo esidingekayo ekusebenzisweni kwamathuba okugcina izintaba. Lezi nhlalo zinzima kakhulu kuzinto ezivela kusilicone, i-waxes, noma izinto ezithuthukile zepolymer ezingenxa ukukhupha okungcono ngaphandle kokulahleka kwebumba lezimali zepolifomu. Izinto zokuvuselela zomlando we-rigid pu foam release agent kumongo wokugcina izintaba ziqukethe ukukhathalela kakhulu kusihlangothi, ukuthulwa kwezinhlelo, nokutholakala kwezinye izinhlelo zepolyurethane ezigcinwe ngokujwayelekile kumongo wokwakhiwa kwamathuba okugcina izintaba. Lezi zimodi zibonisa imiphumela engcono kwiingcobo zosihlangothi, usuku olukhaya kuya kusihlangothi sokuphakama okuphumelelayo okuphakade kangangokuphindaphindi kabili kwe-200. Imininingwane yangcono iyisiseko se-teknoloji yangcono yesurfactant eyenza ukuthi iphindele kakhulu emigundwaneni engqondweni yokudala izimo, ngelikahle sinezimodi zokukhupha ezingcono kulo lonke ubuso bokuphila kwezimali. Isiseko se-rigid pu foam release agent kumongo wokugcina izintaba sihamba kwiindlela ezahlukene ezikwakhiwa kuzo, kuhlanganise nokwakha kwezimali zerefrigerator, izici zokugcina izintaba zefreezer, izixhobo zokugcina izintaba zokuthenga, neziseko zobomi obukhuselekile bezokugcina izintaba. Lezi zimodi zibonakala zingcamla kwiindlela zokudala ezingavulekiyo zepolifomu, iindlela zokusebenzisa polifomu ngokuphindaphindi, neziseko zokulungisa apho kukudingeka ukukhupha kwegesi. Amathuba okwakhiwa ayisebenzisa lezi zimodi ukuze akhuthaze ubunzima bokwakhiwa, aminimize isikhathi esingaqhelekanga sekixhobo, nakunciphise indlela yokuhlukunyezwa kwezimali ngexesha lokwakhiwa kwizinto zokugcina izintaba. Ukuziphatha kwe-rigid pu foam release agent kumongo wokugcina izintaba kuyehlisa kwiindlela zokwakhiwa ezinezimodi neziseko ezenziwa ngendlela yokwenza, zinika abawethu izisombululo ezinezimodi ezingenxa ukuthi ziphile kwiindlela zokusebenza ehlukile ngelikahle sinezimodi zokubophelela kwiindlela ezahlukene zezimpilo zokugcina izintaba.