Selelekela: Boemo ba nts'etsopele ea theknoloji ea foam ea polyurethane spray
Moelelong oa litlhoko tse thata tsa paballo ea matla a meaho lefatšeng ka bophara le tšireletso ea tikoloho, foam ea polyurethane spray e le thepa e sebetsang hantle ea ho thibela mocheso, mefuta ea ts'ebeliso ea eona e ntse e hola khafetsa. Hona joale, ho na le litsela tse peli tse kholo tsa tekheniki 'marakeng: litsamaiso tsa setso tsa ho ntša metsi le litsamaiso tse ntseng li hlaha tsa ho ntša metsi tsa HFO(hydrofluoroolefin). Joaloka moetsi oa litsebi oa li-catalyst tsa polyurethane, re tla sekaseka ka botlalo litšobotsi tsa tekheniki tsa litsamaiso tsena tse peli, liphapang tsa ts'ebetso, le mokhoa oa ho khetha catalyst e nepahetseng ho ntlafatsa ts'ebetso ea sistimi.
Lintlha tsa sistimi ea foam ea polyurethane spray ea foam ea metsi
Melao-motheo ea motheo le liketso tsa lik'hemik'hale
Sistimi e Foufatswang ke Metsi (WBA) ke e 'ngoe ea mahlale a tloaelehileng le a butsoitseng a foufatsi indastering ea polyurethane. Molao-motheo oa mantlha ke ho sebelisa metsi ho arabela le isocyanate (-NCO) ho hlahisa carbon dioxide (CO₂) e le khase e foufatsang:
R-NCO + H₂O → R-NH₂ + CO₂↑
Karabelo ena ka nako e le 'ngoe e theha sebopeho sa polyurea se fanang ka ho tiea ho itseng ho foam. Melemo ea sistimi ea foam ea metsi e kenyelletsa:
- Molemo oa litšenyehelo: Metsi ke sesebelisoa se theko e tlaase ka ho fetisisa sa ho foka
- Tšireletso ea tikoloho: Ho se be le ODP (bokhoni ba ho fokotseha ha ozone), GWP e tlase (bokhoni ba ho futhumala ha lefatše)
- Ts'ebetso e holileng: lilemo tse mashome tsa nalane ea ts'ebeliso, liparamente tse phethahetseng tsa ts'ebetso
Tšimo e tloaelehileng ea kopo
1. Ho thibela moaho: ho thibela ho fafatsa mabota le marulelo sebakeng seo
2. Lisebelisoa tsa ketane e batang: ho thibela mocheso oa literaka tse sehatsetsing le polokelo e batang
3. Liphaephe tsa indasteri: tse thibelang ho bola le ho thibela ho ruruha ha liphaephe tsa peterole
Litšobotsi tsa ts'ebetso
- Botenya ba 'mele: hangata ke 30-50kg/m³
- Ho tsamaisa mocheso: 0.022-0.028W/(m·K)
- Sekhahla sa ho thibela ho hloleha ha liphio: 90-95%
- Botsitso ba litekanyo: ≤1.5% (70℃, 48h)
Tlhahlobo ea sistimi ea foam ea polyurethane e fafatsang foam ea HFO
Moloko o mocha oa theknoloji ea sesebelisoa sa ho foka sa 'mele
Moemeli oa ho foka oa HFO(hydrofluoroolefin) ke moemeli oa ho foka oa moloko oa bone o ntlafalitsoeng lilemong tsa morao tjena, o emelang lihlahisoa tse kang HFO-1233ZD (E) le HFO-1336MZZ (Z). Ha e bapisoa le liemeli tsa setso tsa ho foka tsa HCFCS le HFC, HFO e na le:
- GWP e tlase haholo: hangata <10, e tlase haholo ho feta di-agent tsa ho foka tsa mofuta wa HFC
- Zero ODP: ha e senye lera la ozone
- Ho thibela mocheso hantle: ho tsamaisa mocheso oa mohato oa khase ho tlase ho feta CO₂
Litšobotsi tsa karabelo ea lik'hemik'hale
Jwalo ka sesebediswa sa ho foka ka mmele, HFO e itshetlehile haholo ka katoloso ya yona ya mouoane ho hlahisa sebopeho sa foam, empa e ntse e hloka metsi ho nka karolo karolong ya karabelo ya dikhemikhale ho fana ka matla a eketsehileng a foam:
Karabelo e ka sehloohong: Katoloso ea mouoane oa HFO
Maikutlo a ka lehlakoreng: H₂O + -NCO → CO₂ + polyurea
Maemo a mantlha a ts'ebeliso
1. Ho sireletsa meaho ka maemo a hodimo: Merero ya meaho e tala e nang le ditlhoko tse tiileng tsa tshireletso ya tikoloho
2. Sehatsetsi sa motlakase: sehatsetsi, sehatsetsi sa metsi le lera la ho kenya thepa ea ntlo
3. Sefofane: Dikopo tse ikgethang tse nang le boima bo boima le ditlhoko tsa tshebetso
Litšobotsi tsa ts'ebetso
- Bongata ba boima: 28-45kg/m³
- Ho tsamaisa mocheso: 0.018-0.022W/(m·K)
- Sekhahla sa ho thibela ho hloleha ha liphio: 92-97%
- Botsitso ba litekanyo: ≤1.2% (70℃, 48h)
Karolo ea bohlokoa ea li-catalyst litsamaisong ka bobeli
Thepa eaSehokelo sa MXC-70
MXC-70 ke sesebelisoa sa amine se sebetsang hantle haholo, se nang le monko o tlase se entsoeng ka ho khetheha bakeng sa foam ea spray ea polyurethane e nang le litšobotsi tse latelang:
- Monko o tlase: Ntlafatsa tikoloho ea mosebetsi le ho fihlela maemo a thata a sebaka sa mosebetsi
- Kobe e boreleli ea foam: e fana ka gel e leka-lekaneng le ho leka-lekana ha foam ho fokotsa liphoso tsa bokaholimo
- Khomarelo e ntlafetseng: E ntlafalitsoe haholo bakeng sa ho khomarela li-substrate tse fapaneng (tšepe, lehong, konkreite, jj.)
- Tšebeliso e pharaletseng: E lumellana le litsamaiso tsa foam ea metsi le foam ea HFO
Litekanyetso tsa tekheniki:
- Mofuta oa lik'hemik'hale: motsoako oa amine ea tertiary
- Mosebetsi: E phahameng haholo
- Tšebeliso e khothaletsoang: 0.3-1.2php
- Mefuta e sebetsang ea pH: 7-10
Mokhoa oa ho kenya tšebetsong tsamaisong ea ho ntša metsi ka foam
MXC-70 e susumetsa liketso tse latelang lits'ebetsong tsa ho ntša foam ka metsi:
1. Karabelo ea metsi le isocyanate (karabelo ea ho ntsha moholi)
2. Karabelo ea li-polyol ka li-isocyanate (karabelo ea gel)
3. Karabelo ea ho kopanya (eketsa matla a foam)
Sebopeho sa eona se ikhethang sa limolek'hule se ka boloka ts'ebetso e itekanetseng mohatong oa pele oa ho ntša foam, 'me sa fana ka matla a lekaneng a gel mohatong oa morao oa ho ntša foam, e le hore ho fumanoe foam e tšoanang e nang le bokaholimo bo bataletseng.
Karolo ea ntlafatso tsamaisong ea HFO
Hangata litsamaiso tsa HFO li tobana le liphephetso tse latelang ka lebaka la phapang ea thepa ea 'mele ea li-blowing agents:
- Ho thata ho laola ho leka-lekana ha foam le gel
- Ho folisa bokaholimo butle
- Tlamahano ea substrate ha e tsitsa
MXC-70 e ntlafatsa tshebetso ya sistimi ya HFO ka:
1. Fetola mothapo o nyolohang wa foam ho tsamaisana le dibopeho tsa mouoane wa HFO
2. Ntlafatsa ka mor'a ho fola ho ntlafatsa boleng ba bokaholimo
3. Ntlafatsa ts'ebetso ea sebopeho le ho ntlafatsa ho nosetsa ha substrate
Litlhahiso tsa khetho ea sistimi le linyeoe tsa ts'ebeliso
Mokhoa oa ho khetha sistimi e nepahetseng ea foam
1. Nahana ka litlhoko tsa taolo ea tikoloho
- Mmaraka o tiileng oa Europe le United States: sistimi ea bohlokoa ea HFO
- Linaha tse Tsoelang Pele: Mekhoa ea ho ntša foam ka metsi e ntse e le tlholisano
2. Lekola litlhoko tsa ts'ebetso
- Ho tsamaisa mocheso ka mocheso o tlase haholo: Khetha sistimi ea HFO
- Litlhoko tse matla haholo: Mekhoa ea ho ntša foam ka metsi e ka ba molemo
3. Mehopolo ea litšenyehelo
- Morero o lekanyelitsoeng oa tekanyetso: Sistimi ea ho ntša foam ka metsi
- Merero ea maemo a holimo: Litšenyehelo tse eketsehileng tsa litsamaiso tsa HFO li ka amoheloa
Nyeoe ea kopo e atlehileng
Nyeoe ea 1: Morero oa kaho e tala (Sistimi ea ho ntša foam ka metsi)
- Sebelisa catalyst ea MXC-70 ho 0.8php
- Ho fihlelletswe ho tsamaisa mocheso 0.025W/(m·K)
- Bokgoni ba kaho bo eketsehile ka 15%
- Setifikeiti sa LEED
Nyeoe ea 2: Mohala oa tlhahiso ea sehatsetsing sa maemo a holimo (Sistimi ea HFO)
- MXC-70 e kopantsoe le catalyst e khethehileng
- Ho tsamaisa mocheso ho fokotsehile ho 0.019W/(m·K)
- Botenya ba foam bo fokotsehile ka 12%
- Poloko ea litšenyehelo tsa motlakase ea selemo le selemo ea hoo e ka bang $80,000
Mokhoa oa nts'etsopele ea bokamoso le tebello ea theknoloji
1. Ntlafatso e tsoelang pele ea sistimi ea ho ntša metsi ka foam
- Tshebetso e ntlafetseng ka di-catalyst tse ntjha
- Fokotsa tšebeliso ea metsi ho fokotsa ho robeha ha letlalo
- Ntlafatso ea metsoako e thibelang malakabe haholo
2. Tswelopele ya theknoloji ya HFO
- Ntlafatso ea lisebelisoa tsa ho foka tsa HFO tse theko e tlase
- Ho ikamahanya le maemo ho ntlafetseng
- Ntlafatsa botsitso ba sistimi
3. Nts'etsopele easesebelisoa sa ho bakatheknoloji
- Sesebediswa se arabelang (phokotso ya VOC)
- Sistimi e bohlale ea ho kenya tšebetsong (e ikamahanyang le maemo a fapaneng)
- Sesebediswa sa ho thusa ka mesebetsi e mengata (se thusang ho thibela malakabe + se thibelang malakabe + se tsitsitseng)
Qetello le tlhahiso
Mekhoa ea ho fofisa ka metsi le ea ho fofisa ka HFO ka 'ngoe e na le melemo, 'me khetho e itšetlehile ka litlhoko tse khethehileng tsa ts'ebeliso, litlhoko tsa tikoloho le lintho tse lokelang ho nahanoa ka litšenyehelo. Ho sa tsotelehe hore na ke sistimi efe e sebelisoang, ho khetha catalyst e nepahetseng ke senotlolo sa ho netefatsa boleng ba sehlahisoa le katleho ea tlhahiso.
MXC-70 ke sesebelisoa se sebetsang hantle haholo, se pakiloeng 'marakeng ka lits'ebetso tse latelang:
- E fana ka tekanyo e leka-lekaneng ea foam/gel bakeng sa litsamaiso tsa foam ea metsi
- Rarolla mathata a ho lokisa le ho kopanya bokaholimo ba litsamaiso tsa HFO
- Litšobotsi tse nang le monko o fokolang li ntlafatsa tikoloho ea mosebetsi
- Ntlafatsa bokgoni ba tlhahiso le botsitso ba sehlahisoa
Nako ea poso: Mmesa-15-2025