Iifoam ze-polyurethane eziqinileyo zisetyenziswa kakhulu kumashishini afana nokwakha, ukufudumala, iimoto, kunye nokupholisa. Iifoam ze-polyurethane eziqinileyo zinamandla aphezulu oomatshini, iimpawu ezibalaseleyo zokufudumala, kunye nokumelana nezinto ezingqongileyo, kwaye zisebenza kakuhle kwiindlela ezahlukeneyo zokusetyenziswa ezifuna amandla. Enye yezinto eziphambili ekuphuculeni ukusebenza kweefoam ze-polyurethane eziqinileyo kukusetyenziswa kwee-catalysts ze-polyurethane.
Iikhatalyst zePolyurethane, njenge-MXC-C15, idlala indima ebalulekileyo ekulawuleni iimpembelelo zeekhemikhali ngexesha lenkqubo yokwenziwa kwefoam, ngaloo ndlela ichaphazela iimpawu zomzimba nezekhemikhali zemveliso yokugqibela yefoam. I-MXC-C15 (iNombolo yeCAS 6711-48-4) yi-catalyst ye-amine engakhuphiyo, enevumba eliphantsi, ephendulayo ephucula ukwakheka kunye nolwakhiwo lwe-polyurethane foams eqinileyo ngokukhuthaza impendulo enqwenelekayo phakathi kwe-isocyanate kunye ne-polyol components. Makhe sijonge ngokusondeleyo indlela ii-catalysts ze-polyurethane ezifana ne-MXC-C15 ezichaphazela ngayo iimpawu ze-polyurethane foams eqinileyo.
Iipropati Eziphuculweyo Zomzimba
Ifoam ye-polyurethane eqinileyo ineempawu ezintle zomzimba, kwaye ii-polyurethane catalysts zidlala indima ebalulekileyo ekuphuculeni ezi mpawu. Ezinye zeempawu ezibalulekileyo zomzimba zefoam ye-polyurethane eqinileyo ziquka:
Ubuninzi kunye noBume obuQinisekileyo
Uxinano lwe-polyurethane foam eqinileyo luqhele ukuba phakathi kwe-30-40 kg/m2³, enika ulungelelwaniso olungcono lwamandla nobunzima. Ii-catalysts ze-polyurethane ezifana ne-MXC-C15 zinceda ukulawula inkqubo yokufutha, nto leyo ephumela kwisakhiwo seseli esincinci nesifanayo. Esi sakhiwo sibalulekile ekuqinisekiseni amandla okuxinzelela, ukuqina kunye nokuqina kwesakhiwo se-foam. Ngenxa yoko, i-polyurethane foam eqinileyo ingasetyenziswa kwizicelo ezifana nokufakelwa kwesakhiwo kunye neepaneli ezithwala umthwalo ngaphandle kokuphazamisa ukusebenza.
Ukufakwa kobushushu kunye nokuqhuba okuphantsi kobushushu
Enye yeempawu ezibalaseleyo ze-rigid polyurethane foam kukuqhuba kwayo okuphantsi kobushushu, okuhlala kuphakathi kwe-0.018 kunye ne-0.024 W/mK. Le propati ibalaseleyo yokukhusela ubushushu inceda ukunciphisa ukusetyenziswa kwamandla kwaye iphucula ukusebenza kakuhle kwamandla kwezakhiwo kunye neenkqubo. Indima yee-polyurethane catalysts ekulawuleni izinga lokuphendula kunye nesakhiwo se-foam ibalulekile ekufezekiseni ukuqhuba okuphantsi kobushushu okufunekayo. Ngokuchaphazela izigaba zokwandiswa kunye nokuphilisa, ii-catalysts ezifana ne-MXC-C15 zivumela i-response curve egudileyo, enegalelo kwisakhiwo seseli se-foam esihambelanayo, esibalulekileyo ekusebenzeni kwayo kobushushu.
Ukufuma kunye nokumelana namanzi
Ulwakhiwo lweeseli ezivaliweyo zefoam ye-polyurethane eqinileyo luphucula ukumelana kwayo nokufuma kunye nokungena kwamanzi. Ii-catalysts ze-polyurethane zinceda ukuphucula ulwakhiwo lweeseli zefoam, ziqinisekisa ukuba umlinganiselo ophezulu weeseli ezivaliweyo uyafezekiswa. Oku, kubonelela ngokumelana kwamanzi okuphezulu, okwenza ifoam ifaneleke ukusetyenziswa kwiindawo zangaphandle apho ukuchatshazelwa kukufuma kuyinto exhalabisayo, njengakwiiphahla, ukufakelwa udonga, kunye neepaneli ezifrijini.
Iipropati zeKhemikhali eziphuculweyo
Ii-catalysts ze-polyurethane azichaphazeli nje kuphela iimpawu zomzimba ze-polyurethane foam eqinileyo kodwa zikwachaphazela neempawu zayo zeekhemikhali, zinegalelo ekuqineni kwayo ixesha elide kunye nokumelana nezinto ezahlukeneyo ezingqongileyo.
Ukumelana neekhemikhali
Iifoam ze-polyurethane eziqinileyo zinokumelana okuhle kakhulu neekhemikhali ezahlukeneyo, kuquka ii-asidi, iziseko, kunye nezinyibilikisi, nto leyo eyenza ukuba zibe lukhetho oludumileyo kwiindawo zoshishino ezinzima apho ifoam inokudibaniswa nezinto ezirhabaxa. Ii-catalysts ezifana ne-MXC-C15 zisebenza ngokukhawulezisa impendulo ye-urea (isocyanate-water) ngexesha lenkqubo yokuvelisa ifoam. Le mpendulo inceda ukuphucula uzinzo kunye nokuqina kwefoam, iqinisekisa ukuba igcina ukumelana neekhemikhali ngokuhamba kwexesha.
Ukuthintela ilangatye
Ukungavuthi komlilo luphawu olubalulekileyo kwizixhobo ezisetyenziswa ekwakheni, ekuthuthweni, nakwezinye izinto ezibalulekileyo kukhuseleko. Nangona i-polyurethane foam eqinileyo ivutha ngokwemvelo, inokwenziwa ingatshi ngokufaka izongezo ezithintela umlilo kwifomyula. Ii-catalysts ze-polyurethane ezifana ne-MXC-C15 zinegalelo ekunyukeni okubushelelezi nokulawulwayo kwe-foam ngexesha lokuveliswa, okwenza i-foam ikwazi ukufaka ezi zongezo ngokufanelekileyo. Oku kuphumela kwi-foam ezinzileyo enokuhlangabezana nemigangatho yokhuseleko lomlilo ngaphandle kokubeka emngciphekweni ezinye iimpawu zayo.
Ukumelana neNdalo kunye nokwaluphala
Ukuqina kwefoam ye-polyurethane eqinileyo kuphucuka kakhulu kukukwazi kwayo ukumelana nezinto ezingqongileyo ezifana nokuguquguquka kobushushu, ukufuma kunye nokuvezwa yi-UV. Ii-catalysts ze-polyurethane zinceda ukuphucula inkqubo yokunyanga, ukuqinisekisa ukuba ifoam igcina amandla ayo kunye nokuqina kwayo nokuba kwiimeko ezinzima zokusingqongileyo. Ulwakhiwo lwefoam luhlala luqinile kwaye iipropati zayo zeekhemikhali zizinzile ngokuhamba kwexesha, nto leyo eyenza ukuba ibe lukhetho olubanzi lokusetyenziswa ixesha elide kwiindawo ezixineneyo.
Indima kaI-MXC-C15kwiiNkqubo zeFoam zePolyurethane eziqinileyo
I-MXC-C15 sisincedisi se-amine esisebenzayo esidlala indima ebalulekileyo ekuphuculeni iimpembelelo zeekhemikhali ngexesha lokuveliswa kwe-polyurethane foam eqinileyo. Iluncedo ngakumbi kwiinkqubo ezifuna i-reaction curve egudileyo nelawulwayo. Ngokuphucula ukunyangwa komphezulu kunye nokukhuthaza ukunyangwa okusebenzayo kwiinkqubo zokubumba eziguquguqukayo, i-MXC-C15 iqinisekisa ukuba i-foam igcina iipropati zayo zomzimba nezekhemikhali kulo lonke ixesha layo lobomi. Esi sincedisi sikwanazo neengenelo zokungabikho kokukhutshwa kwegesi kunye nevumba eliphantsi, kwaye sisetyenziswa kakhulu kushishino lokukhusela okusingqongileyo.
Isiphelo
Iikhatalyst zePolyurethane zibaluleke kakhulu ekubumbeni iipropati zomzimba nezekhemikhali zefoam eqinisiweyo yepolyurethane. Iikhatalyst ezifana neMXC-C15 ziphucula uxinano lwefoam, ubushushu, amandla esakhiwo, kunye nokumelana neekhemikhali. Isiphumo sisixhobo esiguquguqukayo nesihlala ixesha elide esisebenza kakuhle kakhulu kwiintlobo ngeentlobo zezicelo zoshishino, zorhwebo, kunye neendawo zokuhlala. Nokuba kukuphucula ukusebenza kakuhle kwamandla, ukuphucula ukubambezeleka komlilo, okanye ukubonelela ngokumelana nezinto ezibangela uxinzelelo lokusingqongileyo, ukusetyenziswa kweekhatalyst zepolyurethane kubalulekile ekuvuleni amandla apheleleyo efoam eqinisiweyo yepolyurethane.
Ixesha leposi: Februwari-25-2025