I-polyurethane foam yinto ebalulekileyo kwiipaneli zesandwich, enika ubushushu obuhle kakhulu, uzinzo lwesakhiwo kunye nokusebenza kakuhle kobushushu. Iipaneli zesandwich zihlala zisetyenziswa ekwakheni izakhiwo, kwiindawo zokugcina izinto ezibandayo kunye nezakhiwo zoshishino, kwaye zineeleya ezimbini ezibhityileyo zezinto ezihlala ixesha elide kunye nesiseko se-polyurethane foam esikhaphukhaphu. Isiseko senziwe nge-polyurethane rigid foam kwaye sinegalelo elikhulu ekusebenzeni ngokubanzi kwephaneli ngokubhekiselele ekugqumeni ubushushu, ukhuseleko lomlilo kunye nokuqina kwesakhiwo. Umgangatho wale foam core uxhomekeke kakhulu kwi-polyurethane catalyst esetyenziswa kwimveliso yayo.
Ii-catalysts ze-polyurethane zidlala indima ebalulekileyo kwi-chemical reaction eguqula ii-polyols kunye nee-isocyanates zibe yi-foam eqinileyo. Ezi catalysts zikhawulezisa inkqubo yokufutha nokunyanga, ziqinisekisa ulwakhiwo olufanayo lweseli, ukunamathelana ngokufanelekileyo kunye neempawu zomzimba ezifanelekileyo. Enye yezi catalyst yileI-MXC-15, isisombululo se-potassium octoate (CAS 3164-85-0), esisisixhobo sokuguqula kakhulu, esingabizi kakhulu se-isocyanurate. Sifanelekile ngokukodwa kwi-high viscosity polyol formulations kwaye sinokukhuthaza ngempumelelo i-isocyanate reaction.
Isicelo kwiiphaneli zeSandwich
Isiseko se-polyurethane foam kwiiphaneli zesandwich kufuneka sihlangabezane nemigangatho ethile ukuqinisekisa ukuba iphaneli isebenza ngokufanelekileyo. Umzekelo, i-foam kufuneka ibe lula kodwa yomelele ngokwaneleyo ukumelana namandla okuxinzelela kwaye ibonelele ngobushushu. Ukongeza, kwezinye izicelo, ezinje ngokugcinwa kwindawo ebandayo okanye ukukhenkcezwa kwemizi-mveliso, ukumelana nomlilo kubalulekile.I-MXC-15iyasebenza kakhulu kwaye inceda ekwenzeni amagwebu e-polyisocyanurate (PIR), aziwa ngokumelana kwawo nomlilo okwandisiweyo, nto leyo eyenza ukuba afaneleke kakhulu kwezo zicelo.
Iifoam ze-PIR zinomlinganiselo ophezulu weebhondi ze-isocyanurate kuneefoam ze-polyurethane eziqhelekileyo, nto leyo enika ukumelana okuhle komlilo. I-MXC-15 ikhuthaza ukwakheka kwezi bond, iqinisekisa ukuba ifoam yokugqibela ineempawu ezifunekayo kwiiphaneli zesandwich. Oku kwenza iinkqubo zefoam ze-PIR ezixhaswa yi-MXC-15 zibe lukhetho oludumileyo kwiiphaneli ekufuneka zithobele imigangatho engqongqo yomlilo.
Impembelelo kuMgangatho weMveliso
Ukukhethwa kwe-catalyst kunempembelelo enkulu kumgangatho we-sandwich panel foam core. Ii-catalysts ezifana ne-MXC-15 ziqinisekisa ukusabela kwe-foam okugudileyo nokulawulwayo, okubangela ulwakhiwo lwe-foam oluhambelanayo. Oku kubaluleke kakhulu ekuvelisweni kwee-sandwich panels, njengoko ukufana koxinano lwe-foam kunye nobukhulu beeseli kuchaphazela iipropati ze-thermal insulation kunye namandla oomatshini e-sandwich panel. I-polyurethane foam eyenziwe kakuhle kunye nee-catalysts ezifanelekileyo zinokunciphisa kakhulu ukudluliselwa kobushushu, ziphucule ukusebenza kakuhle kwe-insulation kunye nokuqina kwexesha elide kwee-sandwich panels.
Ukongeza, ukusebenzisa ii-catalysts ezisebenzayo kakhulu ezifana ne-MXC-15 kunokuvelisa amagwebu aqinileyo aneziphene ezincinci. Ukuphakama okulawulwayo kunye neprofayili ye-gelation kunciphisa amathuba okuba kubekho i-voids okanye iindawo ezibuthathaka kwi-foam, okuqinisekisa ukuthembeka kwesakhiwo sephaneli yesandwich. Ukongeza, i-MXC-15 ifanelekile kwiifomyula ze-polyol ezine-viscosity ephezulu, iqinisekisa ukuhambelana neentlobo ngeentlobo zeefomyula, okwenza kube lukhetho oluguquguqukayo kubavelisi abafuna ukuphucula iinkqubo zabo zemveliso yeephaneli.
Ngamafutshane, ii-catalysts ze-polyurethane ezifana ne-MXC-15 zidlala indima ebalulekileyo ekuvelisweni kweepaneli zesandwich, ingakumbi ekuvelisweni kwee-PIR foam cores. Impembelelo yazo kumgangatho we-foam, iipropati zobushushu kunye nokumelana nomlilo azinakuthathelwa ingqalelo. Ngokukhetha i-catalyst efanelekileyo, abavelisi banokuvelisa iipaneli zesandwich ezihlangabezana nemigangatho ephezulu yokusebenza kunye nokhuseleko, nto leyo eyenza ukuba zibe lukhetho olubanzi kwiintlobo ngeentlobo zezicelo zokwakha nezemizi-mveliso.
Ixesha leposi: Jan-06-2025