Ipakethe yeKhemistry eLungileyo: Ukwenza iKhemistry iNcinci ubushushu obuMbi ngamaxesha athile njengoko uxuba izithako zalo mzamo wokudala. Akufunekanga idlule kwi-70 ° C Njengoko ubushushu bunyuka, bunokuba yingozi kwi-phosgene. Xa uvuselela umxube, uyawuvumela ukuba udibanise ngokufanelekileyo kwaye uphendule.
Yongeza i-Caustic Soda: Ngoku lixesha lokongeza i-caustic soda emva kokuba impendulo igqityiwe. Le khemikhali iyenza ingathathi hlangothi nayiphi na iasidi ekhoyo kumxube, iyicoca. Le nkqubo ibaluleke kakhulu kukhuseleko kunye nokucoceka kwemveliso yokugqibela.
Hlambulula umxube we-MDI: Emva koko kufuneka ucoce umxube usebenzisa ikholomu ye-distillation ukuqinisekisa ukuba i-MDI isocyanate yakho icocekile kangangoko kunokwenzeka. Oku kuphucula ukucoceka ngokubanzi kwemveliso yokugqibela ngokususa i-phosgene eseleyo, i-MDA, kunye nayo nayiphi na enye i-compounds engafunekiyo enokuthi ihlale ikhona kumxube wokusabela. Inxalenye enkulu yenkqubo ukuhlanjululwa!
Uvavanyo lokucoceka: Ngoku ukuba ukucocwa kugqityiwe, lixesha lokufumanisa ukuba i-MDI isocyanate yakho ihlambulukile okanye ayikho. Ukuba ufumana ukungcola ngaphakathi kuyo, kuya kufuneka uphinde uyicoce ukuze ukwazi ukufumana imveliso efanelekileyo. Kwaye oku kubalulekile, zombini kumgangatho kunye nokusebenza kakuhle.
Izinto ezimbalwa malunga neengcebiso ze-MDI isocyanate.
Iingcebiso eziluncedo apha zokuqinisekisa ukuba uvelisa eyona MDI isocyanate enokwenzeka
Imichiza elungileyo: Sebenzisa kuphela iikhemikhali ezilungileyo emva kokulungiswa kwe-MDI isocyanate. Sebenzisa i-MDA ecocekileyo kakhulu kunye ne-phosgene. Izithako ezisemgangathweni ziya kuqinisekisa ukuba upheka imveliso yokugqibela engcono.
