Sesebelisoa sa ho Khatholla Tšepe ke Eng?
A sesebelisoa sa tšepeke motsoako o nang le liathomo tsa tšepe tse nolofalletsang liketso tsa lik'hemik'hale ntle le ho jeoa ts'ebetsong. Tlhahisong ea polyurethane, li-catalyst tsa tšepe li potlakisa liketso tsa bohlokoa tse kang ho thehoa ha urethane (karabelo ea polyol-isocyanate) le urea (karabelo ea metsi-isocyanate). Li-catalyst tsa tšepe li ntlafatsa katleho, li fokotsa nako ea tlhahiso, 'me li netefatsa thepa e lakatsehang ea' mele le ea lik'hemik'hale ea foam ea polyurethane.
Tlhophiso ea Li-Catalyst tsa Tšepe
Li-catalyst tsa tšepe li arotsoe ka bongata ho latela sebopeho sa tsona sa lik'hemik'hale, ts'ebetso, le mofuta o itseng oa tšepe. Ka tlase ke lihlopha tsa bohlokoa:
1. Li-Catalyst tse Thehiloeng ho Tin
Mohlala: MXC-T12(DBTDL)Dibutyltin dilaurate, Tin octoate.
Likopo: E sebelisoa haholo ho foam ea polyurethane, lipente, likhomaretsi le li-sealant.
Matlo: Mosebetsi o phahameng oa ho baka lik'hemik'hale bakeng sa karabelo ea polyol-isocyanate. Hangata e amahanngoa le matšoenyeho a tikoloho le chefo.
2. Li-Catalyst tse Thehiloeng ho Bismuth
Mohlala: MXC-B20 (Sesebediswa sa ho lokisa dikhemikale tsa Bismuth).
Likopo: Mokhoa o mong oa ho sebelisa li-catalyst tse thehiloeng ho thini ka har'a foam e thata le e tenyetsehang.
Matlo: Ha e na chefo ebile e mosa tikolohong. E sebetsa hantle lits'ebetsong tse hlokang monko o tlase le mesi e fokolang. E khothalletsa ho phekola hantle ka morao ka ho bokellana ha viscosity ka nako e khutšoanyane.
3. Li-Catalyst tse Thehiloeng ho Zinc
Mohlala: Zinc neodecanoate.
Likopo: Liforo tse tenyetsehang, li-elastomer, le lipente tse koahelang.
Matlo: Litšenyehelo tse tlase le ts'ebetso e bobebe ea ho susumetsa. E sebelisoa hangata mefuteng moo ho hlokahalang khetho e phahameng.
4. Li-Catalyst tse Thehiloeng ho Titanium
Mohlala: Li-alkoxide tsa titanium.
Likopo: Liaparo, li-sealant, le likhomaretsi.
Matlo: Mosebetsi o matla oa ho susumetsa bakeng sa likarabelo tse itseng. Ha e atile haholo ho foam ea polyurethane ka lebaka la litšenyehelo tse phahameng.
5. Li-Catalyst tsa Bismuth-Tin kapa Tšepe e Tsoakiloeng
Mohlala: Metswako ea li-catalyst tsa bismuth le tin.
Likopo: E sebelisoa ho leka-lekanya ts'ebetso le litšenyehelo ha ka nako e ts'oanang e fokotsa chefo.
Matlo: Litlamorao tse kopanetsoeng ho ntlafatsa liprofaele tse itseng tsa karabelo.
6. Li-Catalyst tse ling tsa Tšepe
Mehlala: Li-catalyst tse thehiloeng ho aluminium, cobalt, manganese, kapa tšepe.
Likopo: Ditshebediso tse ikgethang tsa niche ho dikoahelo kapa di-elastomer.
Matlo: Fana ka melemo e ikhethang joalo ka botsitso ba mocheso o phahameng kapa khetho e itseng ea karabelo.
MXC-B20: Bismuth Carboxylate Catalyst e le Sebaka sa Tin-Thehiloeng ho Tin
MXC-B20 kesesebelisoa sa bismuth metal carboxylateE entsoe e le mokhoa o mong o sireletsang tikoloho ho feta di-catalyst tsa setso tse thehilweng ka thini. E sebediswa ho foam ya polyurethane ho kgothaletsa:
- Ho Bokella ha Viscosity e Liehileng
e fana ka taolo e betere nakong ea mekhahlelo ea pele ea ho thehoa ha foam. - Phekolo e Ntlafalitsoeng ea Back-End:E netefatsa thepa ea ho qetela e matla ntle le ho beha botsitso ba ts'ebetso kotsing.
- Botsoalle ba Tikoloho:Ha e na metsoako ea mercury, loto, le tin, e lumellanang le melaoana e thata ea tikoloho.
- Ho feto-fetoha ha maemo:E lumellana le li-polyol tse thata le tse bonolo, e nolofalletsang ts'ebeliso ea eona ho li-foam tse thata, li-foam tse nang le sekoli se phahameng, le litsamaisong tse nang le masoba a manyane.
Melemo ea Li-Catalyst tsa Bismuth ho feta Li-Catalyst tsa Tin
Chefo e tlase le tšusumetso e fokotsehileng tikolohong. Monko o tlase le mesi e tsoang sehlahisoa sa ho qetela. Ho ba le botsitso bo phahameng mefuteng ea metsi.
Qetellong, di-catalyst tsa tshepe tse kang MXC-B20 di bapala karolo ya bohlokwa ho ntshetseng pele tlhahiso ya polyurethane e tsitsitseng le e sebetsang hantle ka ho fana ka mekhoa e meng ho feta ditsamaiso tsa setso tse thehilweng ka thini.
Nako ea poso: Pulungoana-26-2024