Ukusetshenziswa kwe-Polyurethane Catalyst: I-Open cell Foam

Ama-catalyst e-polyurethane adlala indima ebalulekile ekukhiqizweni kwe-foam yamaseli avulekile, into eguquguqukayo esetshenziswa kabanzi ezimbonini ezahlukahlukene. I-foam yamaseli avulekile, ebonakala ngesakhiwo sayo samaseli axhumene, ivumela umoya noketshezi ukuthi kudlule, okwenza kube lula ukuphefumula futhi kuthambe. Lesi sakhiwo esiyingqayizivele siyayihlukanisa ne-foam yamaseli avaliwe, enamaseli ahlukanisiwe anikeza isimo esiqinile nesiqinile.

Ukusetshenziswa kwe-Open-Cell Foam

I-foam evulekile ithola usizo emikhakheni eminingi ngenxa yezakhiwo zayo ezihlukile. Enye yezindlela zayo eziyinhloko isembonini yefenisha, lapho isetshenziswa khona ekufakeni izimpahla zokugqoka kanye nezingubo zokugqoka ukuze inikeze induduzo nokusekelwa. Imvelo yayo ethambile neguquguqukayo yenza ifanelekele omatilasi, imicamelo, kanye nezihlalo.

Emkhakheni wezimoto, i-foam evulekile isetshenziswa ekufakeni izihlalo kanye nokuvikela umsindo. Amandla e-foam okumunca umsindo nokudlidliza athuthukisa induduzo nokuthula kwamakamelo ezimoto. Ngaphezu kwalokho, ubunjalo bayo obulula bunegalelo ekusebenzeni kahle kwezimoto ngokunciphisa isisindo ngaphandle kokubeka engcupheni induduzo.

Okunye ukusetshenziswa okubalulekile kwe-foam evulekile kusembonini yokwakha. Isetshenziswa njengento yokuvikela i-foam efafazayo esiza ekulawuleni amazinga okushisa angaphakathi ngokuhlinzeka ngokuvikela ukushisa. Ukuphefumula kwe-foam kusiza nasekuvimbeleni ukwakheka komswakama, ngaleyo ndlela kuncishiswe ingozi yesikhunta kanye nesikhunta.

I-foam evulekile nayo ivame kakhulu embonini yokupakisha. Izici zayo zokubopha zivikela izinto ezibucayi ngesikhathi sokuthunyelwa nokuphathwa. Ngaphezu kwalokho, ikhono layo lokuhambisana nezimo ezahlukene lenza lifanelekele izixazululo zokupakisha ezenziwe ngokwezifiso.

Indima Yama-Catalyst e-Polyurethane Ekwenziweni Kwe-Foam Evulekile

Ukwenziwa kwe-foam ye-polyurethane evulekile kuhilela ukusabela kwamakhemikhali okuyinkimbinkimbi, lapho ama-catalyst e-polyurethane ebalulekile khona. Lawa ma-catalyst athonya amazinga okusabela kanye nezakhiwo zokugcina ze-foam. Kunezinhlobo ezimbili eziyinhloko zama-catalyst asetshenziswa kule nqubo: ama-catalyst e-amine kanye nama-catalyst asekelwe ensimbi.

Ama-Amine Catalysts: Lawa asetshenziswa kabanzi ekukhiqizweni kwe-foam yamaseli avulekile ngenxa yekhono lawo lokulawula ibhalansi phakathi kokusabela kwe-urethane (polyol-isocyanate) kanye ne-urea (water-isocyanate). Izibonelo zama-amine catalysts zifaka i-triethylenediamine (TEDA), i-bis(dimethylaminoethyl)ether (BDMAEE), kanye ne-N,N-dimethylcyclohexylamine (DMCHA). Lawa ma-catalysts asiza ekudaleni isakhiwo samaseli avulekile ngokuthonya ukuphakama kwe-foam kanye nezikhathi zejeli, ukuqinisekisa ukwakheka kwamaseli okuhambisanayo nokufana.

Ama-Catalysts Asekelwe Ensimbi: Ama-Organotin compounds ayizi-catalysts ezivamile ezisekelwe ensimbi ezisetshenziswa ekukhiqizweni kwe-polyurethane foam. Lawa ma-catalysts asheshisa ukusabela kwe-isocyanate-polyol, athuthukisa izakhiwo zemishini kanye nokuqina kwe-foam. I-Dibutyltin dilaurate (DBTDL) kanye ne-stannous octoate yizibonelo ezijwayelekile zama-catalysts e-organotin asetshenziswa kule nqubo.

Isiphetho

I-foam ye-polyurethane evulekile, enezinhlelo zayo eziningi, incike kakhulu ekuphenduleni okunembile nokulawulwayo okuqhutshwa yi-catalysts ye-polyurethane. Ngokuqonda indima yalezi zi-catalysts, abakhiqizi bangenza ngcono izakhiwo ze-foam ukuze bahlangabezane nezidingo ezithile zohlelo lokusebenza, baqinisekise ukusebenza okuphezulu nokuthembeka kuzo zonke izimboni ezahlukene. Njengomhlinzeki wezi-catalysts ze-polyurethane, sizinikele ekuhlinzekeni ngezingxenye ezibalulekile ezidingekayo ukukhiqiza i-foam ye-open-cell esezingeni eliphezulu, sisekele ukusungula izinto ezintsha kanye nokugqwesa kule nsimu enamandla.