Indima yeeCatalysts zePolyurethane kwiiSandwich Panels

Ibhodi yesandwich sisixhobo sokwakha esinokusetyenziswa ngeendlela ezahlukeneyo esiqulathe iileya ezintathu: iileya ezimbini zangaphandle (okanye ukugqitywa) kunye nezinto zeleya engundoqo embindini. Enye yezona zinto ziqhelekileyo zeleya engundoqo yi-polyurethane (PU) foam, eneempawu ezibalaseleyo zokuthintela ubushushu kunye nenkxaso yesakhiwo. Ileya engundoqo idla ngokudityaniswa phakathi kwee-fines eziqinileyo, ezihlala zenziwe ngesinyithi, iplastiki, okanye izinto ezidityanisiweyo eziqinisiweyo zefayibha ezonyusa amandla kunye nokuqina kwephaneli. Izinto eziphambili ekuvelisweni kweeleya engundoqo ye-polyurethane foam esebenza kakuhle kwiipaneli zesandwich zii-polyurethane catalysts, ezifana ne-MXC-15 kunye ne-MXC-37.

Kutheni iPolyurethane Foam?

Ii-polyurethane foam cores zisetyenziswa kakhulu kwiipaneli zesandwich ngenxa yexabiso lazo elihle kakhulu lokukhusela (ixabiso eliphezulu le-R), ubume obulula, kunye nenkxaso yesakhiwo. Ezi paneli zihlala zisetyenziswa kumashishini apho ukhuseleko lobushushu kunye nokuqina kwesakhiwo kubalulekile, njengale:

1. Ulwakhiwo: Izinto ezisisiseko zibonelela ngobushushu obugqwesileyo, nto leyo eyenza izakhiwo zisebenzise umbane kakuhle. Umzekelo, xa sasisebenza kwindawo yokugcina izinto ezibandayo, iiphaneli zesandwich ezigqunyiweyo zanciphisa kakhulu iindleko zamandla ngokugcina ubushushu obufanayo.
2. Indawo Yokukhenkceza Nokugcina Izinto Ezibandayo: Kwiindawo zokugcina izinto ezibandayo, amaxabiso aphezulu okukhusela abalulekile ekugcineni amaqondo obushushu aphantsi.Ukumelana nobushushu kwe-polyurethane foam kwenza ukuba ibe lukhetho olubanzi kumagumbi abandayo nakwiiyunithi zefriji.
3. I-Aerospace kunye ne-Marine: Kwizicelo zeenqwelo-moya nezolwandle, ibhalansi phakathi kobunzima namandla ibalulekile. Iiphaneli zesandwich ezinee-PU foam cores zibonelela ngenkxaso efunekayo yokwakha ngelixa zinciphisa ubunzima.

Indima kaIiCatalysts zePolyurethane

Ii-catalysts ze-polyurethane, ezifana ne-MXC-15 kunye ne-MXC-37, zibalulekile kwi-reaction ye-foam ngexesha lokuveliswa kwee-polyurethane foam cores. Ezi catalysts zikhawulezisa ii-chemical reactions phakathi kwe-polyol kunye ne-isocyanate, zivumela ukwakheka kwe-foam ezinzileyo eneempawu ezifunekayo.

I-MXC-15: Sisincedisi se-isocyanurate esingabizi kakhulu nesisebenzayo esinezinga eliphezulu lokuguqulwa. Sifanelekile kwi-polyol formulation ene-viscosity ephezulu, sikhuthaza ukusabela kwe-isocyanate, sisebenza kakhulu, sisetyenziselwa ikakhulu i-PU hard foam, kubandakanya i-spray foam, i-PIR foam, kunye nenkqubo ye-PIR foam.

I-MXC-37: Kwakhona yaziwa ngokuba yi-DMAEE, ukongeza i-DMAEE kwi-polymer kunciphisa ivumba le-amine elifumaneka kakhulu kwi-foams. Ingasetyenziswa njenge-catalyst ephambili yodwa okanye njenge-cocatalyst ukunciphisa ukusetyenziswa kwe-BDMAEE foam catalysts. Kwi-ester based stabilizers, i-soft foam, i-microcellular foam, i-elastomer, i-RIM kunye ne-RRIM, kunye nokusetyenziswa kwe-rigid foam packaging.

Iingenelo zePolyurethane Foam kwiiphaneli zeSandwich

1. Ukufakwa Okuphezulu (ixabiso eliphantsi): I-polyurethane foam inexabiso eliphezulu le-R nge-intshi nganye xa ithelekiswa nezinye izinto zokukhusela ubushushu. Oku kwenza iiphaneli zesandwich ezine-PU foam cores zisebenzise amandla ngendlela eyonga kakhulu.
2. Ilula kwaye Ihlala ixesha elide: Ii-PU foam cores zinciphisa ubunzima bephaneli yesandwich ngaphandle kokuphazamisa amandla, nto leyo ezenza zilungele ukusetyenziswa apho ukunciphisa ubunzima kuyinto ephambili.
3. Ukufuma kunye nokumelana nomlilo: I-polyurethane foam inokwakhiwa ngezinto ezongezayo ukuphucula ukulibaziseka komlilo kunye nokumelana nokufuma, ukuphucula ukhuseleko kunye nobude bexesha leepaneli zesandwich kwiindawo ezahlukeneyo.
4. Uxinano kunye namandla anokwenziwa ngokwezifiso: Ngokulungisa indlela yokwenza izinto kunye neekhatalyst, abavelisi banokuvelisa amagwebu anobunzima obahlukeneyo kunye neempawu zoomatshini, okuvumela iiphaneli zesandwich ukuba zihlangabezane neemfuno ezithile zesicelo.

Isiphelo

Iikhatalyst zePolyurethane ezifana neMXC-15 kunye neMXC-37 zibaluleke kakhulu ekuvelisweni kwee-polyurethane foam cores ezisebenza kakuhle kwiipaneli zesandwich. Ezi khatalyst ziqinisekisa ukuba i-foam iyahlangabezana neemfuno ezifunekayo, ezifana nexabiso eliphezulu lokufudumala, amandla olwakhiwo, kunye nokuqina. Ukuzivumelanisa nezimo kwe-polyurethane foam, kunye nokuchaneka kweekhatalyst zanamhlanje, kuye kwaqinisa indawo yayo kumashishini aqala kulwakhiwo ukuya kwifriji, iimoto, kunye ne-aerospace. Ngobuchule obutsha kwiifomyula ze-catalyst, abavelisi banokuqhubeka nokuphucula ukusebenza kunye nokuzinza kweepaneli zesandwich.