Ha lipheo tsa boemo ba leholimo ba lefats'e li ntse li phehelloa ka lebelo le potlakileng, indasteri ea polyurethane e ntse e feta liphetohong tse kholo. Phetoho ho tloha ho lintho tsa setso tsa ho foka ho ea ho tse sireletsang tikoloho. Li-HFO tse sireletsang tikoloho(Li-hydrofluoroolefin)e fetohile ntlafatso ea bohlokoa ea theknoloji bakeng sa thepa ea ho thibela ho ruruha, foam ea polyurethane e fafalitsoeng (SPF), foam e thata, ho thibela ho ruruha ha lisebelisoa tsa lapeng le lits'ebetso tsa likoloi. Ka nako e ts'oanang, kholo e tsoelang pele ea tlhoko eali-catalyst tsa HFO tse sebetsang hantle e susumetsa bahlahisi ho amohela ditharollo tsa di-catalyst tse hlwekileng, tse sebetsang hantle le tse tsitsitseng haholoanyane.
1. Hobaneng ha Li-HFO li Fetoha Maemo a Lefatše
1.1 Ho tloha ho CFC ho ea ho HFO: Moloko oa Bone oa Li-Blowing Agents
Phetoho ea lintho tse fokang e latela tsela e hlakileng ea taolo le tikoloho:
| Moloko | Mofuta | Tšusumetso ea Ozone | GWP | Boemo |
| Ea pele | CFC | Holimo | Holimo | E thibetsoe ka botlalo |
| Ea bobeli | HCFC | Mahareng | Holimo | Ho fela ha mohato ka potlako |
| Ea boraro | HFC | Lefela la ODP | Holimo haholo | Tlas'a phokotso e tiileng ea lefats'e |
| Ea bone | HFO | Lefela | Tlase haholo (<1) | Indasteri e ka sehloohong |
2. Melemo ea Bohlokoa ea Li-HFO tse Sireletsang Tikoloho
✔ GWP e tlase haholo (<1) – phokotso ea 99.9% ha e bapisoa le HFC
Li-HFO tse kangHFO-1234yf, HFO-1233zdleHFO-1234zee senyeha ka potlako sepakapakeng ka bophelo bohle ba eona feelamatsatsi ho isa libeke, e fokotsang haholo tšusumetso ea tlelaemete.
✔ Ha ho na ODP - Ha ho kotsi lera la ozone
✔ Ho thibela mocheso le ho boloka matla hantle
Foam ea HFO e bontša ho tsamaisa mocheso hantle le botsitso bo phahameng, e leng se etsang hore e be e loketseng:
- Lisebelisoa tsa sehatsetsing
- Liphanele tsa ho thibela moaho le liphanele tsa sandwich
- Foam ea polyurethane e fafalitsoeng (SPF)
✔ Ho phalla ho hoholo le sebopeho se setle sa sele
Litšobotsi tsa 'mele tsa HFO li hlokali-catalyst tse nang le ts'ebetso e ntlafalitsoeng, haholo-holo bakeng sa ho leka-lekanya ho phahama, phallo le ho fola ha foam.
3. Kamoo Li-HFO li Fetolang Indasteri ea Polyurethane
3.1 Kamohelo e Potlakileng ho pholletsa le Makala a Maholo
| Indasteri | Mekhoa ea Kopo ea HFO |
| Foam ea Spray (SPF) | Phetoho ho tloha ho HFC-245fa → HFO-1233zd / HFO LBA |
| Lihatsetsi / Lihoebetsa | Mefuta e meholo (Haier / Hisense / Midea) e se e ntse e lumellana ka botlalo le HFO |
| Liphanele tsa Sandwich le mapolanka a PIR | Phetoho ho ea ho HFO-LBA bakeng sa ts'ebetso e betere ea boleng ba K le mollo |
| Ho kenya thepa ka har'a PU bakeng sa kaho | Li-premix tse thehiloeng ho HFO tse nkang sebaka sa HCFC-141b |
| Motlakase oa likoloi | Kamohelo ea lefats'e ka bophara ea HFO-1234yf |
Phetoho ena e potlakileng e baka tlhoko e potlakileng eaLi-catalyst tsa polyurethane tse ntlafalitsoeng ka HFO.
4. Liphephetso tsa Catalyst ho Litsamaiso tsa HFO
Ho fetohela ho di-agent tse fokang tsa HFO ho fetola haholo matla a dikhemikhale a dikarabelo tsa PU:
Hangata diforomo tsa HFO di na le:
- Reactivity ea pele e tlase
- Liphapang tse phahameng tsa ho qhibiliha
- Boitšoaro bo bocha ba sebopeho sa foam
- Litlhoko tse thata tsa ho phekola bokaholimo
- Viscosity e phahameng ho metsoako e entsoeng pele ho nako
Ka hona, bahlahisi ba foam ba tlameha ho sebelisali-catalyst tse khethehileng tsa HFOtse fanang ka:
✔ Tekanyo e matla ea pele-qetellong
Ho lefella ho fokotseha ha qalo ea karabelo ea HFO.
✔ Ho phalla ha metsi ho ntlafetse
Haholo-holo e bohlokoa bakeng sa liphanele tsa PIR, SPF, le mela ea tlhahiso e tsoelang pele.
✔ Ho phekola bokaholimo ka potlako
Ho thibela ho fokotseha le ho putlama ha sele.
✔ Monko o tlase le mosi o fokolang
Ho fihlela melao ea machaba ea tikoloho.
5. Litharollo tse Tsoetseng Pele tsa Catalyst bakeng sa Litsamaiso tsa HFO
Jwalo ka moetsi wa setsebi wa di-catalyst tsa polyurethane, re fana ka pokello e felletseng ya di-catalyst tse etseditsweng ka ho kgetheha bakeng saLi-HFO tse sireletsang tikoloho.
Li-Catalyst tse Khothalelitsoeng tsa HFO
- MXC-B20:Tieho e ntle haholo ea ho tima ka pele, pheko e matla ea ho tima ka morao, e loketse HFO SPF
- MXC-R40: E ntlafatsa phekolo ea bokaholimo, e loketse litsamaiso tsa ho foka metsi/HFO hammoho
Li-catalyst tsena li sebetsana le liphephetso tse tloaelehileng tsa ho theha HFO, tse kang:
- Qalo e liehang
- Profaele e sa lekanang ea ho phahama
- Ho se tsitse ha sele
- Ho robeha ha bonolo ka mor'a ho fola
6. Tebello ea Mokhoa oa 'Maraka: Ho Kopanngoa ha HFO + Catalyst ho Tla Laola Lilemo tse Leshome tse Latelang
6.1 Tlhoko ea lefats'e ea HFO e ntse e hola ka >10% selemo le selemo
E susumetsoa ke kaho e bolokang eneji, motlakase oa likoloi, le katoloso ea ketane e batang.
6.2 Mekhoa ea Catalyst e tlameha ho fetoha ka nako e le 'ngoe
Li-HFO li ke ke tsa fihlela ts'ebetso e ntle ka ho fetisisa ntle le li-catalyst tse etselitsoeng k'hemistri ea tsona ka ho khetheha.
6.3 Li-catalyst tse nang le monko o tlase, tse nang le VOC e tlase li tla ba tsa bohlokoa
Melao ea tikoloho (EPA, EU F-Gas, lipheo tsa Chaena tsa khabone e habeli) li potlakisa mokhoa ona.
Liphanele tsa ho kenya mocheso tsa PIR tse thehiloeng ho HFO tse 6.4 li tla hola ka potlako
Haholo-holo ho:
- Meaho e entsoeng esale pele
- Sebaka se batang sa polokelo
- Kaho ea modular
- Marulelo a indasteri
7. Qetello: HFO le Boqapi ba Catalyst li tla hlalosa Bokamoso ba Polyurethane
Phetoho ea lefats'e ho ea hoLi-HFO tse sireletsang tikolohoe emela monyetla oa nalane bakeng sa indasteri ea polyurethane. Ha li-HFC li ntse li felisoa 'me melaoana e ntse e tiea, bahlahisi ba tlameha ho amohela ts'ebetso e phahamengLi-catalyst tsa HFOho fihlella tekano e hlokahalang ea karabelo, bokhoni, le botsitso.
Litharollo tsa rona tsa catalyst—ho kenyeletsoaMXC-B20,MXC-TMA, MXC-10, le tse ling—li entsoe ho thusa bahlahisi ba polyurethane ho fetela hantle mehleng ea HFO, li fana ka:
- Bokgoni bo phahameng ba ho kwahela
- Tlhahiso e hloekileng le e tala
- Ts'ebetso e tsitsitseng ka foam e thata le e fafatsang
- Ho latela maemo a lefats'e a tikoloho
Ka ho kopanya tse tsoetseng peleLisebelisoa tsa ho butsoela tsa HFOka ntlafatsoli-catalyst tsa polyurethane, indasteri e tla fihlella tshebetso e phahameng le phokotso e nang le moelelo ya khabone—e tshehetsang bokamoso bo tsitsitseng le bo bolokang eneji.
Nako ea poso: Pulungoana-21-2025
