Ukufakwa kwe-spray foam kuyinto yokufakelwa eguquguqukayo, esebenza kahle kakhulu eyenziwe ngokusabela kwamakhemikhali kwezingxenye ezimbili eziyinhloko (i-polyol resin ne-isocyanate). Uma kuhlanganiswa, lezi zinto ezimbili zisabela ekwakheni i-polyurethane foam ebanzi evala futhi ivikele izindawo ngempumelelo. Isidingo esikhulayo sokufakwa kwe-high-performance insulation kwezicelo zokuhlala, zezentengiselwano nezezimboni siholele ekwandeni kokusetshenziswa kokufakwa kwe-foam insulation okufuthwe ngokufakwa kwe-insulation okuphezulu, ukumelana nomswakama kanye nokusekelwa kwesakhiwo.
Indlela Yokwenza Ukufakwa Kwe-Spray Foam
Ukukhiqizwa kokufakwa kwe-foam okufuthwe kuncike kakhulu ekusebenzisaneni phakathi kwama-polyol nama-isocyanates, akhula ukuze agcwalise isikhala futhi aqine abe yi-foam yokufuthwa ngemva kokufuthwa. Kodwa-ke, le nqubo idinga ukulawulwa okunembile ukuqinisekisa ubuningi be-foam, isakhiwo kanye nokufana okufanele. Lapha,i-catalyst ye-polyurethaneidlala indima ebalulekile ekushayeleni nasekulawuleni ukusabela.
Indima Yama-Catalyst Ekukhiqizweni Kwe-Polyurethane Foam
Ama-catalyst abalulekile ekukhiqizweni kwama-polyurethane ngoba akhulisa kakhulu izinga lokusabela futhi alawula isikhathi sejeli, okubalulekile ekufinyeleleni ukwandiswa kwegwebu okuhle kakhulu. I-catalyst ingalawula nokusabela kwesibili, njengokusabela kwamanzi, okukhipha igesi edingekayo ukuqala i-bubble. Ibhalansi phakathi kwalezi zindlela zokusabela ibalulekile ekukhiqizweni kwezakhiwo zegwebu ezifanayo ezinesakhiwo samaseli kanye nezakhiwo ezihambisanayo. Ekukhiqizweni kwe-polyurethane, ama-catalyst ngokuvamile ahlukaniswe ngezigaba ezimbili:ama-catalyst e-aminefuthiama-catalyst e-organometallic(njenge-organotin, i-bismuth, ne-zinc).
I-MXC-TMA kanye ne-MXC-BDMA: Ama-Catalyst Okuvikela I-Spray Foam
Ama-CatalystI-MXC-TMAfuthiI-MXC-BDMAzinezinzuzo ezisobala ekukhiqizweni kokufakwa kwe-spray foam insulation.I-MXC-TMAluwuketshezi olungenambala kuya kophuzi olukhanyayo olukhuthaza ukuhluzwa kwe-polyisocyanurate ukuze kwakheke ijika elifanayo nelilawulwayo lokukhuphuka. I-catalyst isetshenziswa kabanzi kuma-foam aqinile adinga ukugeleza okuthuthukisiwe kanye nokuqina okuqhubekayo, futhi luyisinqumo esihle sezinhlelo zokufaka ukuvikela ezidinga ubuqotho besakhiwo.
Ngokolunye uhlangothi,I-MXC-BDMA(N, N-dimethylbenzylamine, inombolo ye-CAS 103-83-3) iyisikhuthazi se-benzyldimethylamine esivame ukusetshenziswa ekusetshenzisweni kwe-foam eqinile. Ithuthukisa ukugeleza kokuqala kwe-foam, yakha izimbobo ezifanayo zama-bubble futhi iqinisekisa ukubopha okuqinile ku-substrate. Lokhu kwenza i-MXC-BDMA ifanele izidingo zokushisa eziphezulu ekusebenzeni kwe-foam yokufafaza, lapho isakhiwo se-foam esizinzile, esiqinile nesinamathelayo sibalulekile.
Isiphetho
Ama-catalyst e-polyurethane afana ne-MXC-TMA kanye ne-MXC-BDMA abalulekile ekufinyeleleni ikhwalithi yezinto zokuvikela i-foam yokufutha. Izakhiwo zawo ezihlukile zivumela ukulawulwa okunembile kokwakheka kwe-foam, okuqinisekisa ukusebenza okuthembekile kokuvikela kuzo zonke izinhlelo zokusebenza. Njengoba isidingo sezixazululo zokuvikela ezisebenzisa amandla kahle siqhubeka nokukhula, ama-catalyst e-polyurethane athuthukile ayaqhubeka nokudlala indima ebalulekile ekuhlinzekeni ngokuvikela i-foam yokufutha esezingeni eliphezulu nelihlala isikhathi eside.
Isikhathi sokuthunyelwe: Novemba-06-2024