Polyurethane e se e ntse e tsejoa e le thepa e feto-fetohang haholo, 'me ho tenyetseha ha eona ho e etsa khetho e ntle bakeng sa mefuta e fapaneng ea lits'ebetso tsa indasteri, haholo-holo ho Likoahelo, Likhomaretsi, Li-Sealant, le Li-Elastomer (CASE). Ts'ebetso tsena li hloka li-catalyst tse sebetsang hantle tse ka ntlafatsang kinetics ea karabelo ha li ntse li netefatsa ts'ebetso e phahameng ea sehlahisoa. Bakeng sa bahlahisi ba litsamaiso tsa polyurethane, ho khetha catalyst e nepahetseng ke senotlolo sa ho leka-lekanya bokhoni, polokeho le bophelo bo bolelele ba sehlahisoa.
Mefuta e fapaneng ea li-catalyst tsa polyurethane tse sebetsang hantle li fana ka litharollo tse etselitsoeng litlhoko tse ikhethileng tsa lits'ebetso tsa CASE, li thusa baetsi ba li-formula ho fihlela thepa e ntle joalo ka ho khomarela, ho tenyetseha le ho hanyetsa mabaka a tikoloho. Har'a li-catalyst tsa rona tse ka sehloohong,MXC-R70(2-(2-dimethylaminoethoxy)ethanol, CAS 1704-62-7) e ikhetha ka ho sebetsa ha eona le ho tšoaneleha ha eona mefuteng e fapaneng ea foam le lihlahisoa tsa elastomeric.
Karolo eaLi-catalystLikopong tsa CASE
Li-catalyst li sebetsa e le mokokotlo oa liketso tsa lik'hemik'hale tse fetolang metsoako ea polyurethane e metsi hore e be lihlahisoa tse tšoarellang, tse sebetsang hantle. Li potlakisa liketso tsa ho fofonela le ho folisa (gelling), ho netefatsa hore sehlahisoa sa ho qetela se na le thepa e lakatsehang ea mechine le ea 'mele.
Litšebelisong tsa CASE, sena se bolela ho ntlafatsa lintlha tsa bohlokoa tse kang:
- Ho khomarela: Ho netefatsa kamano e matla pakeng tsa bokaholimo, e leng ntho ea bohlokoa ho likhomaretsi le li-sealant.
- Ho tenyetseha le ho Tšoarella: Ho fihlella ho tenyetseha ho tšoarellang nako e telele le ho hanyetsa ho tsofala ha li-elastomer.
- Qetello ea Bokaholimo: Ho ntlafatsa ho tšoana le litšobotsi tsa botle ba lipente.
- Bokgoni ba ho Sebetsa: Ho nolofatsa potoloho ea tlhahiso e potlakileng ka linako tse ntlafalitsoeng tsa phekolo.
Litšebeliso tsa Bohlokoa tsaMXC-R70mohlomong
MXC-R70, e leng catalyst ea amine e feto-fetohang, e bapala karolo ea bohlokoa ho hlahiseng lihlahisoa tse fapaneng tse thehiloeng ho polyurethane, ho kenyeletsoa le foam ea microcellular le elastomers. Ho sebetsa ha eona ka bongata ho etsa hore e tšoanelehe haholo bakeng sa mefuta ea foam ea vinyl joalo ka li-dashboard tsa likoloi le li-headrest, moo ho hlokahalang ho nepahala le ho tšoarella. Ka ho khothaletsa ho fola ka potlako ntle le ho beha kotsing ho tenyetseha le boiketlo ba foam, MXC-R70 e bohlokoa bakeng sa lits'ebetso tse hlokang ts'ebetso e phahameng le boiketlo.
Likarolo tsa Bohlokoa tsa MXC-R70:
- Ho arabela ka potlako ho hoholo: E dumella dinako tsa karabelo tse sebetsang hantle le tse potlakileng ditshebetsong tsa ho fofonela le ho fodisa.
- Lisebelisoa tse fapaneng: E loketse mefuta e mengata ea ts'ebeliso, ho tloha ho foam ea microcellular ho ea ho elastomers, e fana ka thepa e ntle ea 'mele ts'ebelisong e' ngoe le e 'ngoe.
- Chefo e tlase: E fokotsa ho itšetleha ka li-catalyst tsa tšepe tse chefo joalo ka dibutyltin, e leng se netefatsang lits'ebetso tse sireletsehileng tsa tlhahiso bakeng sa basebetsi le bahlahisi.
Ho Fokotsa ho Itlhahisa ho Li-Catalyst tse Chefo
Kameho e ntseng e hola indastering ea polyurethane ke ho fokotsa ho pepesehela li-catalyst tse chefo tsa tšepe tse kang dibutyltin. Mefuta ea rona e mecha ea li-catalyst, ho kenyeletsoa le MXC-R70, e fana ka mokhoa o mong o sireletsehileng ka ho fokotsa kapa ho felisa tlhoko ea lintho tsena tse kotsi. Sena ha se ntlafatse polokeho ea sebaka sa mosebetsi feela empa se boetse se tsamaisana le melaoana e fetohang ea tikoloho le litlhoko tsa bareki bakeng sa lihlahisoa tse hloekileng le tse tala.
Qetello
Nako ea poso: Hlakubele-11-2025