Indasteri ea polyurethane e ntse e fetoha haholo ho ea mekhoeng e tsitsitseng haholoanyane, 'me tšebeliso ea li-blower agents tsa hydrofluoroolefin (HFO) e ka pele ho phetoho ena. Sistimi ea HFO ke theknoloji e tsoetseng pele e sebelisang li-blower agents tsa HFO ho etsa li-polyurethane foams tse nang le ts'ebetso e phahameng le melemo ea tikoloho. Ha li-blower agents tsa setso tse nang le bokhoni bo phahameng ba ho futhumala ha lefatše (GWP) li ntse li felisoa ka lebaka la melao ea tikoloho, litsamaiso tse thehiloeng ho HFO li fana ka mokhoa o mong o motala ka GWP ea tsona e tlase haholo.
HFO ke eng?
Li-hydrofluoroolefin (li-HFO) ke sehlopha sa metsoako e sebetsang e le li-agent tse fokang tsa moloko oa bone tlhahisong ea foam ea polyurethane. Li entsoe ka ho khetheha ho nkela meloko ea pejana ea li-agent tse fokang sebaka joalo ka li-hydrochlorofluorocarbons (li-HCFC) le li-hydrofluorocarbons (li-HFC), tse tlatsetsang haholo ho fokotseng ozone le ho futhumala ha lefatše. Li-agent tse fokang tsa HFO, ka lehlakoreng le leng, li na le tšusumetso e nyane ho futhumaleng ha lefatše ha li ntse li boloka ho thibela mocheso le thepa e ntle ea sebopeho e hlokahalang lits'ebetsong tsa foam.
Melemo ea Li-HFO Blowing Agents ho Polyurethane Foams
- GWP e Tlase ka ho Fetisisa: Lisebelisoa tsa ho foka tsa HFO li na le GWP e tlase haholo, e fokotsang haholo tšusumetso ea tikoloho ea foam ea polyurethane. Li fana ka mokhoa o mong o tsitsitseng bakeng sa liindasteri tse batlang ho fokotsa mesi ea tsona ea khabone.
- Tshebetso e Botle ea Matla: Foam ea polyurethane e hlahisoang ka li-agent tse fokang tsa HFO e bontša thepa e ntle ea ho thibela mocheso, e tlatsetsang ho bolokeng matla lits'ebetsong tse fapaneng, ho kenyeletsoa le makala a kaho, a sehatsetsing le a likoloi.
- Ho Latela Melao: Ka ho felisoa ha lintho tse nang le GWP e ngata tlas'a litumellano tsa lefats'e tse kang Montreal Protocol le Kigali Amendment, tšebeliso ea li-HFO blowing agents e netefatsa ho latela melao ea tikoloho ha ka nako e ts'oanang e boloka maemo a ts'ebetso.
- Likopo tse Tenyetsehang: Mekhoa ea HFO e ka sebelisoa lits'ebetsong tse fapaneng tsa foam, ho kenyeletsoa le foam ea polyurethane e fafalitsoeng (SPF), liphanele tse thata, lisebelisoa tsa motlakase le lifoam tse tenyetsehang. Ho tenyetseha ha li-agent tsa HFO tse fokang ho etsa hore li lokele lits'ebetso tse ngata tsa indasteri.
Li-catalyst tsa Polyurethane bakeng sa Litsamaiso tsa HFO
Tlhahiso ea li-foam tsa polyurethane ho sebelisoa li-agent tse fokang tsa HFO e hloka li-catalyst tse itseng tse netefatsang hore na li sebetsa joang hantle le hore foam e sebetsa hantle hakae. Ho Mingxu Chem, re hlahisa li-catalyst tsa polyurethane tsa boleng bo holimo, ho kenyeletsoaMXC-B20 leMXC-70, tse lumellanang ka botlalo le litsamaiso tsa HFO. Li-catalyst tsena li etselitsoe ho ntlafatsa ts'ebetso ea foam, ho ntlafatsa linako tsa ho fola, le ho ntlafatsa sebopeho sa foam bakeng sa lits'ebetso tse fapaneng.
Qetello
Phetoho ho ea lits'ebetsong tsa HFO ke mohato oa bohlokoa oa ho fokotsa tšusumetso ea tikoloho ea foam ea polyurethane. Ka ho sebelisa li-agent tse fokang tsa HFO le li-catalyst tse lumellanang le tsona tse kang MXC-B20 le MXC-70, liindasteri li ka fihlela ho latela melao le ts'ebetso e phahameng ea foam ha li ntse li kenya letsoho boitekong ba ho boloka botsitso lefatšeng ka bophara.
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Nako ea poso: Hlakola-06-2025