Selelekela
Liindastering tsa kajeno tsa ho futhumatsa le tsa kaho, foam ea polyurethane ea lisele tse koetsoeng e fetohile tharollo e ka sehloohong ka lebaka la ho hanyetsa mocheso oa eona o phahameng, thepa ea thibelo ea mongobo le matla a sebopeho. Motheong oa litsamaiso tsa foam ea lisele tse koetsoeng tse sebetsang hantle ke li-catalyst tsa polyurethane, tse laolang karabelo lipakeng tsa li-polyol le li-isocyanate, tse khethollang sebopeho sa foam, lebelo la karabelo, le ts'ebetso ea ho qetela. Jwalo ka moetsi oa litsebi oa li-catalyst tsa polyurethane, re fana ka mefuta e mengata ea litharollo tse etselitsoeng lits'ebetso tsa foam ea lisele tse koetsoeng.
Foam ea Polyurethane e Koetsoeng ke Eng?
Foam ea polyurethane e koetsoeng ke thepa e thata ea ho thibela mocheso moo boholo ba lisele li koetsoeng 'me li tlatsoa ka lintho tse fokang. Ha e bapisoa le foam ea lisele tse bulehileng, foam ea lisele tse koetsoeng e teteaneng, e matla, 'me e na le sekhahla se tlase sa ho monya metsi. E sebelisoa haholo ho:
Ho thibela moaho le kaho
Sehatsetsing le tsamaisong ea ketane e batang
Ho thibela ho tjheseletsa ha disebediswa tsa indasteri
Ho thibela liphaephe le tanka
Sistimi ea foam ea polyurethane e fafalitsoeng (SPF)
Karolo ea Li-Catalyst Tlhahisong ea Foam ea Lisele tse Koetsoeng
Li-catalyst tsa polyurethane ke likarolo tsa bohlokoa lits'ebetsong tsa foam tse koetsoeng. Li potlakisa le ho leka-lekanya karabelo ea gelling (pakeng tsa isocyanate le polyol) le karabelo ea ho foka (pakeng tsa isocyanate le metsi kapa metsoako ea ho foka), li ama ka kotloloho:
Sebopeho le ho tšoana ha sele ea foam
Boemo ba karabelo le nako ea ts'ebetso
Botsitso le ho khomarela ha tekanyo e lekanang
Boleng ba ho qetela ba ho kwahela foam (boleng ba R)
Ho kgetha motswako o nepahetseng wa catalyst ho bohlokwa ho fihlella boemo bo lakatsehang ba ho phahama, nako ya ho fola, le matla a ho hatella—haholoholo ha ho sebediswa ditsamaiso tsa di-agent tse thehilweng hodima HFO, tse thehilweng hodima metsi, kapa tse tswakilweng.
Li-Catalyst tse Khothaletsoang tsa Polyurethane bakeng sa Foam e Koetsoeng ea Lisele
Re fana ka mefuta e fapaneng ea li-catalyst tse thehiloeng ho amine le tšepe tse entsoeng ka ho khetheha bakeng sa lits'ebetso tse thata, tse koetsoeng tsa foam ea polyurethane:
MXC-T12 (Dibutyltin Dilaurate): Sesebediswa sa organotin se sebetsang hantle haholo se kgothaletsang karabelo ya gelling, se ntlafatsang thatafalo ya foam le matla a ho qetela a mechini. Se loketse bakeng sa ho kwahela diboto le disebediswa.
MXC-B20 (Sesebediswa se Thehilweng ho Bismuth): Mokhoa o mong o seng chefo, o nang le mosi o fokolang ho feta di-catalyst tsa tin. O sebetsa e le motsoako o kopanyang le di-amine ho kgothaletsa tieho e leka-lekaneng ya pele le pheko e matla ya morao. E ntle haholo bakeng sa foam ya spray le ditsamaiso tsa phanele tse tswelang pele.
MXC-15 (Octanoate ea Potassium): Sesebediswa sa ho lokisa di-isocyanurate se sebetsang haholo bakeng sa ditsamaiso tsa PIR. Se ntlafatsa botsitso ba dibopeho le ho hanyetsa mollo ka hara foam e tiileng ya sele e kwetsweng.
MXC-37 (DMAEE): Sesebediswa sa amine se nang le monko o tlase se sebediswang ho ntlafatsa tshebetso le ho fokotsa mosi o tswang. Se loketse bakeng sa foam ya ketane e batang le ya diphutheloana moo taolo ya monko e leng ya bohlokwa.
MXC-TMA: Sesebediswa sa ho lokisa di-trimer se nolofalletsang ho phahama le ho phalla ka tsela e tshwanang, se sebediswang haholo dibopehong tse nang le phihlello e phahameng jwalo ka diboto tsa foam tse thata le diphanele tse tswelang pele.
Litšebeliso tsa Li-Catalyst tsa Rona ho Foam e Koetsoeng ea Lisele
Li-catalyst tsa rona tsa polyurethane li sebelisoa haholo lits'ebetsong tse latelang tsa foam tse koetsoeng:
1. Spray Foam Insulation (SPF): Li-catalyst tsa rona li thusa ho laola lebelo la ho nyoloha le ho fola ha bokaholimo ho fihlela ts'ebeliso e boreleli le ho khomarela ka matla ha substrate.
2. Diphanele tsa PIR le PUR: Di sebediswa tlhahisong e tswelang pele le e sa tsweleng pele ya boto bakeng sa ho kwahela moaho.
3. Ho Boloka ka Sehatsetsing le ho Boloka ka Serame: Li-catalyst tsa rona li kenya letsoho sebopehong se setle sa sele le botsitsong ba nako e telele.
4. Ho Thibela Phaephe le Tanka: Ho fana ka pholiso e potlakileng le botsitso ba mocheso libakeng tse mongobo o phahameng kapa tse feto-fetohang tsa mocheso.
5. Mekhoa ea Foam ea Block: E loketse ho kenya le ho kenya thepa ka har'a liphutheloana.
Hobaneng re ka re Khetha?
Jwalo ka moetsi wa setsebi wa di-catalyst tsa polyurethane, re fana ka:
Mekhoa ea catalyst e ikhethileng e ipapisitseng le sistimi ea hau ea foam le litlhoko tsa ts'ebetso
Tataiso ea tšehetso ea tekheniki le tlhahiso ho tsoa ho litsebi tsa lik'hemistri tse nang le boiphihlelo
Phepelo e tšepahalang ea sehlahisoa e nang le boleng bo tsitsitseng le litheko tse hlōlisanang
Ho latela maemo a machaba a tikoloho
Qetello
Li-catalyst tsa polyurethaneke tsa bohlokoa bakeng sa tlhahiso e atlehileng ea foam ea lisele tse koetsoeng. Hore na u hlahisa foam ea spray, liphanele, kapa likarolo tsa sehatsetsing, ho khetha sistimi e nepahetseng ea catalyst ke senotlolo sa ho fihlela lihlahisoa tsa boleng bo holimo le tse sebetsang hantle. Ikopanye le rona kajeno ho ithuta haholoanyane ka hore na li-catalyst tsa rona li ka ntlafatsa mekhoa ea hau ea foam ea lisele tse koetsoeng joang.
Nako ea poso: Phuptjane-04-2025