isipho somphumela wesichemisekile kweChina
Abasunguli baseChina bezigaba lokuphazamisa polyurethane bavele njengebazalisi abahlukene besikhuthazo sendawo yokulungiswa okwenzakalelayo ukuthuthela izimboni ze-polyurethane kumakhodi nezinye izinto zokwenza. Abasunguli bathengisa izigaba ezinezindleko eziphambene ezisebenza njengekhephu phakathi kwezinto ze-polyurethane nezixweba zokwakha, ekulungiseleni ukubamba kodwa kuyakhula ubunzima bezimboni nebumba lapho esebenzisana. Umsebenzi wokucophelela wezigaba lokuphazamisa polyurethane uyakhiqiza igumbi elincane elingafihliki okuvikela ukuthi izimboni ziphume ngendlela efanelekileyo kuzintu zonke ezihlinzekayo kumthombo. Izinhlelo eziphucake ezakhiwako ngezimali ezigugu zezigaba lokuphazamisa polyurethane ziqukethe izici ezinzulu zekhemikhali, kufana nezinto eziphindezelayo ze-silicone, izinhlelo ze-fluoropolymer, nezigaba ezizenzekelayo ezilinganiselweyo eziyinhloso eziqinileyo phakathi kwemithombo eyahlukene. Iziphiwo zezigaba ezinzulu zamandla e-polyurethane ziqukethe ukukhuseleka kumathegekethi apho-40°C kuze kube200°C, ukubangelana okuhle nokuthi kunezigaba zomkhiqizo we-polyurethane, amanzi amancane angakhathaliseki ekugcineni isimo, nokwaneliseka okuphambene okuvikela ukuthi kusuke kabusha ngaphandle kokugcina kwakhona. Le zigaba zibonakala ngokuba yizinga elijwayelekileyo emthwebeni wonke wokwakha, kufana nokwenza iziqhamo ze-automotive, ukwakha izinto zokubaka, ukwenza izindlu, ukwenza izitoliki, nokwakha izinto ezithile ezinezici ezimbili. Inethiwekhi yezinsunguli zaseChina zamagugu ezigaba lokuphazamisa polyurethane akhiqize izinhlelo zokuletha izinto ebusweni bonke, ekulungiseleni abathengisi basezweni ngobuchwepheshe bezimali futhi nobunikazi obuhlakile. Izisekelo ziye ngaphandle kwezenzo ezivamile zokugcina ukuze zifinyelele amaqondo afana nezirhandvo ezimbili, izigaba ezinezici eziningi, nezinqumo ezinezici ezinkulu ezidinga ukuthi izigaba zibe yingozi. Izinhlelo ezinzulu zihlala ihlinzeka imipaka yesimo yomhlaba ngokuthi kusebenzisa izinto ezingancanyi yama-VOC, izinto ezingayiphinda-phindi, nokuncipha kwasimo yomhlaba ekugcineni kanye nokusula. Izindlela zokukhuseleka kubuntomboko ezenziwa ngabasunguli abavamile besebenzisa izigaba ezinezigaba, izigaba ezinezindlela zokulungiswa, nokulandela izimo ezinhle zomphakathi, okwenza ukuthi le zinto zibe yingozi yokuphila kumthombo wokwakha polyurethane ebusweni bonke.