Indima Yama-Catalyst e-Polyurethane Kuma-Foam Aguquguqukayo

Ama-foam aguquguqukayo e-polyurethane ayizinto ezisebenziseka ngezindlela eziningi ezisetshenziswa kabanzi ezinhlotsheni ezahlukene, kusukela ekuthomeni ifenisha kuya ezihlalweni zezimoto. Ukusebenza kwala ma-foam kuthonywa kakhulu ukukhethwa kwama-catalyst, alawula ukusabela kwamakhemikhali okubalulekile ngesikhathi sokwakheka kwe-foam. Phakathi kwemiphumela ebalulekile ehilelekile ukusabela kwe-gelation (ukwakheka kwama-carbamates) kanye nokusabela kwe-foam (ukusabela phakathi kwamanzi nama-isocyanates, okukhiqiza i-urea negesi). Lokhu kusabela kumele kulinganiswe ngokucophelela ukuze kudalwe isakhiwo se-foam esifiselekayo, kungaba yiseli evulekile noma iseli evaliwe.

Isithasiselo Samagwebu Aguquguqukayo:I-MXC-A1 (BDMAEE)

I-MXC-A1, eyaziwa nangokuthi ngokwekhemikhali i-N,N,N',N'-tetramethyl-2,2′-oxybis(ethylamine), ingenye yezindlela eziphumelela kakhulu zokukhiqiza i-amine ezisetshenziswa ekukhiqizweni kwe-polyurethane foam eguquguqukayo. Iwuketshezi olungenambala kuya koluphuzi kancane olunomsebenzi ophezulu kakhulu we-catalytic kanye nokukhetha kokusabela kwe-foam.I-MXC-A1ikakhulukazi ikhuthaza ukusabela kwe-urea (ukusabela kwe-water-isocyanate), okubalulekile ekwakheni amagwebu e-polyurethane athambile naqinile.

Ukusabela okuyinhloko ekukhiqizweni kwe-foam kungahlukaniswa kanje:

1. Ukusabela kwe-Gelation:Ukwakheka kwama-carbamates ngokusabela ama-isocyanates namaqembu e-hydroxyl (-OH) kuma-polyol.
2. Ukusabela Okunegwebu:Ukusabela kwama-isocyanates ngamanzi, okuholela ekwakhekeni kwama-bubble e-urea negesi akhulisa isakhiwo se-foam.

Ukulinganisela Ukusabela Kwe-Gelation Nokugqwala

Impumelelo yesakhiwo se-foam eguquguqukayo—kungakhathaliseki ukuthi iyiseli evulekile (evumela ukudlula komoya) noma iseli evaliwe (ehlinzeka ngokushisa okungcono)—kuncike ebhalansini phakathi kwesilinganiso se-gelation kanye nesilinganiso sokunwetshwa kwegesi. Leli bhalansi lilawulwa ngokulungisa uhlobo kanye nenani lama-catalyst kanye neziqinisi ze-foam ekwakhiweni.

I-MXC-A1 ifaneleka kakhulu ekusetshenzisweni kwe-foam ekwazi ukumelana nokuqina okuphezulu (HR) kanye nokubumba i-reaction injection (RIM) ngenxa yekhono layo lokusheshisa ukusabela kwe-foam ngenkathi igcina ukulawula okwanele enkambisweni ye-gelation. Ngokulawula ukuhlushwa kwe-catalyst, abakhiqizi bangenza ngcono ibhalansi phakathi kokwakheka kwegesi kanye nobuqotho besakhiwo se-foam.

Ukusetshenziswa kwe-MXC-A1 ku-Flexible Foam

I-MXC-A1 inezinhlelo zokusebenza eziningi ekukhiqizeni cishe zonke izinhlobo zama-polyurethane foam, yize ukusebenza kwayo okuphezulu kanye nokusebenza kahle kwenza ifaneleke kakhulu emikhiqizweni ye-foam ethambile. Kuma-foam aqinile, njengalawo asetshenziswa ezihlalweni zezimoto kanye nama-cushion efenisha, i-MXC-A1 iqinisekisa isakhiwo seseli esifanayo futhi ithuthukisa ukuqina kanye nenduduzo ye-foam. Isetshenziswa kakhulu emikhiqizweni ye-RIM lapho ama-foam aguquguqukayo kudingeka ahlangabezane nezakhiwo ezifunwayo zemishini nezomzimba.

Ekuphetheni, ama-catalyst e-polyurethane afana ne-MXC-A1 adlala indima ebalulekile ekufezeni izici zokusebenza ezifiselekayo zama-foam aguquguqukayo. Ngokukhuthaza ukusabela okubucayi kwe-foam kanye ne-gelation, avumela abakhiqizi ukuthi bavumelanise isakhiwo se-foam, ukuqina, kanye nokuqina kwayo nezidingo ezithile zohlelo lokusebenza.