Iifoam zepolyurethane zizinto ezibalulekileyo kumashishini ahlukeneyo ngenxa yeempawu zazo ezahlukeneyo, ukusuka ekugqumeni ukuya ekupakisheni. I-catalyst esetyenziswa ekuveliseni ifoam idlala indima ebalulekileyo ekuchazeni ezi mpawu.I-MXC-37, ekwaziwa ngokuba yi-2-[2-(Dimethylamino)ethoxy]ethanol (DMAEE), sisihluzo esikhethekileyo se-tertiary amine esifumene ingqalelo ngenxa yokusebenza kwaso okugqwesileyo ekwenzeni i-polyurethane rigid foam, ngakumbi kwiifomyula ezifuna amanzi amaninzi.
Iimpawu eziphambili zeMXC-37
I-MXC-37 iphawuleka ngomsebenzi wayo wokwenza igwebu eliphezulu, nto leyo eyenza ukuba ilungele ukuvelisa iifomyula zegwebu zokupakisha ezinoxinano oluphantsi. Amandla ayo okusebenza ngokufanelekileyo kwiinkqubo ezityebileyo emanzini avumela ukwenziwa kwezakhiwo zeseli ezivulekileyo, ezifunwa kakhulu kwizicelo ze-spray polyurethane foam (SPF). Ngokungafaniyo nemveliiikhatalysts ezisekelwe kwi-amine, ulwakhiwo lweekhemikhali olukhethekileyo lwe-MXC-37, oluquka i-hydrogen esebenzayo, luyenza ikwazi ukudibana ngokweekhemikhali ne-polymer matrix. Olu manyano lunciphisa kakhulu ivumba eliqhelekileyo le-amine elinxulunyaniswa neefoam ze-polyurethane, nto leyo ephumela kwimveliso elula ukuyisebenzisa.
Ukuguquguquka kunye nezicelo
I-MXC-37 ayipheleli nje ekuveliseni i-foam eqinileyo; ikwafumana ukusetyenziswa kwimveliso ye-foam ethambileyo kunye ne-polyether polyurethane soft block foam. Imbonakalo yayo engenambala okanye etyheli kancinci kubushushu begumbi, idibene nokunyibilika kwayo emanzini, yenza ukuba ibe lukhetho olulula kwiifomyula. Kwizicelo ze-SPF, i-MXC-37 ingasetyenziswa njenge-catalyst ephambili, kodwa ikwasebenza njenge-co-catalyst ebalaseleyo xa idityaniswe nezinye ii-catalysts, ezifana nezo zisekelwe kwi-BDMAEE. Ngokusebenzisa i-MXC-37, abavelisi banokunciphisa ukuxhomekeka kwii-catalysts zemveli ze-foam, okunokunciphisa iindleko zemveliso kunye nokuphucula umgangatho we-foam.
Iingenelo zokusingqongileyo kunye neemvakalelo
Enye yeempawu ezibalaseleyo ze-MXC-37 kukukwazi kwayo ukunciphisa ivumba lemveliso ye-polyurethane egqityiweyo. Oku kufezekiswa ngokufakwa kweekhemikhali ze-MXC-37 kwisakhiwo se-polymer, nto leyo enciphisa umxholo we-amine okhululekileyo obangela ivumba elibonakalayo. Ngenxa yoko, imveliso yokugqibela ayipheleli nje ekubeni nobuhlobo nokusingqongileyo kodwa ikwamnandi ngakumbi kubathengi nakubasebenzisi bokugqibela.
Ukuqukumbela, i-MXC-37 sisincedisi esiguquguqukayo nesisebenzayo esibonelela ngeenzuzo ezibalulekileyo ekuvelisweni kwe-polyurethane rigid foam. Umsebenzi wayo wokwenza i-foam ibe ne-foam eninzi, ukuhambelana kwayo namanzi amaninzi, kunye nokukwazi kwayo ukunciphisa ivumba kwenza ukuba ibe lukhetho oluhle kakhulu kwiintlobo ngeentlobo zezicelo kwishishini le-polyurethane. Nokuba isetyenziswa yodwa okanye njenge-co-catalyst, i-MXC-37 ikulungele ukuphucula ukusebenza kunye nokuthandeka kwe-polyurethane foams.
Ixesha leposi: Sep-04-2024