Thepa ea ho thibela foam e fafalitsoeng ke thepa e ncha e nang le thepa e ntle ea mocheso le melemo ea ho boloka matla, kahoo e sebelisoa haholo mehahong ea bolulo, ea khoebo le ea indasteri. Ka mor'a ts'ebetso e ntle ea thepa ea ho thibela foam e fafalitsoeng ho na le karolo ea bohlokoa ea li-catalyst tsa polyurethane, tse ka laolang ka nepo liketso tsa lik'hemik'hale nakong ea ho thehoa ha foam.
Ho Sireletsa Foam ka Spray ke eng?
Ho thibela ho ruruha ha foam e fafatswang ke thepa e nang le bokgoni ba ho thibela ho ruruha e bopilweng ka ho kopanya dikarolo tse pedi tsa mokelikeli: di-isocyanate le di-polyol. Dikarolo tsena di arabela ha di kopanngwa, di atoloha ho ba foam e tlatsang dikgeo, e kwala mapetso, mme e kgomarela dibakeng tse fapaneng. Ho thibela ho ruruha ha foam e fafatswang ho arotswe ka mefuta e mmedi:sele e bulehilenglesele e koetsoengforomo.
- Foam ea sele e bulehilenge bobebe ebile e tenyetseha, e fana ka ho thibela modumo le ho thibela mocheso ka bongata bo tlase.
- Foam ea lisele tse koetsoenge teteaneng haholoanyane, e fana ka thibelo e matla ea moea le mongobo e nang le khanyetso e phahameng ea mocheso (boleng ba R).
Ho thehoa ha foam ea boleng bo holimo ho itšetlehile ka li-catalyst tsa polyurethane, tse tsamaisang le ho ntlafatsa liketso lipakeng tsa likarolo.
Karolo ea Li-Catalyst tsa Polyurethane ho Spray Foam
Li-catalyst tsa polyurethane li nolofatsa liketso tsa bohlokoa ho insulation ea foam ea spray:
- Karabelo e Fokang: Karabelo ena e kenyelletsa metsi le li-isocyanate ho hlahisa carbon dioxide, e leng se etsang sebopeho sa sele sa foam.
- Karabelo ea Gelling: Karabelo pakeng tsa isocyanate le polyols e bopa matrix ya foam, e fanang ka matla a mechini.
Li-catalyst li netefatsa hore liketso tsena li etsahala ka lebelo le lakatsehang, li leka-lekanya katoloso, ho fola le ho khomarela. Ka ho ntlafatsa lits'ebetso tsena, li-catalyst li ntlafatsa boleng ba foam, botsitso ba sebopeho le katleho ea ts'ebeliso.
Mefuta ea Li-Catalyst tsa Polyurethane tse Sebelisitsoeng ho Spray Foam
Li-Catalyst tsa Amine:
Sesebediswa sa amine, jwalo kaMXC-Tkapa MXC-A33, e laola dikarabelo tsa ho fofonela le tsa ho etsa gelling. Ho tenyetseha ha tsona ho di dumella ho sebediswa ditsamaisong tsa foam tsa disele tse bulehileng le tse kwetsweng, moo di kgonang ho fokotsa dinako tsa karabelo le ho ntlafatsa katoloso ya foam.
Li-Catalyst tse thehiloeng ho tšepe:
Metswako e kangMXC-T120(DBTDL)(dibutyltin dilaurate) leMXC-B20(bismuth carboxylate catalyst) e shebane le ho phekola le ho etsa gelling. Li-catalyst tsena li ntlafatsa botšepehi ba sebopeho sa foam le ho khomarela li-substrate, haholo-holo lits'ebetsong tsa lisele tse koetsoeng.
Li-Catalyst tse Ntle le Monko o Tlase:
Li-catalyst tse nang le mosi o fokolang le tse nang le monko o fokolang, tse kangMXC-37kapaMXC-R70, li sebelisoa ka ho eketsehileng ho fafatsa foam ho fihlela melao ea tikoloho le ho ntlafatsa boleng ba moea ka tlung. Li loketse haholo litsamaiso tse fefoloang ke metsi 'me li fana ka tekano e ntle ho fefoleng le ho phekoleng.
Li-Catalyst tse Ikhethang bakeng sa Li-HFO Blowing Agents:
Lifomo tsa spray tse butsoeloang ke HFO li hloka li-catalyst tse tsitsitseng joalo kaDMDEEkapaMXC-T, tse lumellanang le di-agent tsa hydrofluoroolefin. Ditsamaiso tsena di thusa ho fihlella maemo a thata a bokgoni ba ho futhumala ha lefatshe (GWP) ntle le ho beha tshebetso ya foam kotsing.
Melemo ea ho Sebelisa Li-Catalyst tsa Polyurethane ho Spray Foam Insulation
- Taolo e Nepahetseng ea Karabelo: Li-catalyst li lumella li-formulator ho fetola lebelo la karabelo, ho netefatsa katoloso e nepahetseng ea foam le ho fola.
- Khomarelo e NtlafalitsoengLi-catalyst lia ntlafalaho khomarela ha foam ho li-substrate tse fapaneng, e leng habohlokoa lits'ebetsong tsa ho kenya mocheso.
- Ho tšoarella: Li-catalyst tsa boleng bo holimo li kenya letsoho ho tšoarelleng nako e telele le botsitsong ba foam ea spray, li boloka ts'ebetso ea mocheso ha nako e ntse e ea.
- Ho Latela Tikoloho: Li-catalyst tsa sejoale-joale li etselitsoe ho fihlela maemo a taolo, ho fokotsa mosi o tsoang le monko ha ka nako e ts'oanang li boloka boleng ba foam.
Tšebeliso ea Spray Foam ka Polyurethane Catalysts
Ho thibela foam ea spray ho sebelisoa maemong a fapaneng:
- Meaho ea Bolulo le ea Khoebo: Ho sireletsa mabota, marulelo le likamore tse ka tlase ho fokotsa tšebeliso ea matla.
- Ho kenya thepa indastering: Ho fana ka lithibelo tsa mocheso le mongobo bakeng sa litanka le liphaephe tsa polokelo.
- Likoloi: Ho sireletsa kahare ho dikoloi bakeng sa ho thibela modumo le taolo ya mocheso.
- Liphanele tsa Sehatsetsi: Ho ntlafatsa bokgoni ba ho boloka matla a diyuniti tse batang.
Qetello
Li-catalyst tsa polyurethane li bapala karolo ea bohlokoa nts'etsopele le ts'ebetsong ea thepa ea ho thibela foam e fafalitsoeng. Ka ho khanna lik'hemik'hale tse hlokahalang, li-catalyst tsena li thusa ho theha ho thibela ho futhumatsa ho bolokang matla hantle, ho tšoarella le ho sireletsa tikoloho. Ha tlhoko ea indasteri ea ho thibela ho futhumatsa ho sebetsang hantle e ntse e hola, tsoelo-pele theknolojing ea ho thibela ho futhumatsa e tla lula e le senotlolo sa ho bopa bokamoso ba lits'ebetso tsa foam ea spray.
Nako ea poso: Pulungoana-28-2024