Thepa ea ho thibela foam e fafalitsoeng e se e fetohile theknoloji mehahong ea sejoale-joale, e nang le ho thibela mocheso ho betere, thepa e sa keneleng moea le e sa keneleng mongobo. Motheong oa sistimi ena ea ho thibela mocheso e sebetsang hantle ke foam ea polyurethane, e entsoeng ka karabelo ea lik'hemik'hale pakeng tsa likarolo tse peli tse kholo: lehlakore la "A" (hangata polyisocyanate) le lehlakore la "B", e leng motsoako oa li-polyol, li-catalyst, li-blow agents, li-lake retardants le li-surfactants. Li-catalyst tsa polyurethane, tse kang MXC-BDMA le MXC-TMA, li bapala karolo ea bohlokoa ho tsamaiseng liketso, ho ntlafatsa ho thehoa ha foam le ho netefatsa ts'ebetso e hlokahalang bakeng sa lits'ebetso tse fapaneng tsa ho thibela mocheso.
Likarolo tsa lehlakore la "B" ho Spray Polyurethane Systems
Disistiming tsa foam ya polyurethane e fafatswang (SPF), lehlakore la "B" le kenyeletsa mefuta e fapaneng ya ditlatsetso tse laolang tshebetso ya sehlahiswa sa ho qetela. Ditlatsetso tsena di kenyeletsa:
- Li-polyol: Li-block tsa motheo tse sebetsang le li-isocyanate ho etsa polymer ea polyurethane.
- Li-catalyst: Metswako ya dikhemikhale e potlakisang karabelo pakeng tsa di-polyol le di-isocyanate, e netefatsang ho thehwa le ho fola ha foam ka katleho.
- Lisebelisoa tsa ho Foometsa: Lintho tse thusang ho theha sebopeho sa foam ka ho hlahisa khase nakong ea karabelo.
- Lintho tse thibelang malakabe: Lintho tse eketsang tse ntlafatsang ho hanyetsa mollo ha foam.
- Li-surfactant: Metswako e tsitsisang sebopeho sa foam, e netefatsang ho thehwa ha sele ka ho tshwana.
MXC-BDMA: Benzyl Dimethylamine Catalyst bakeng sa Foam e Tiileng ea Polyurethane
MXC-BDMA (CAS 103-83-3) ke sesebelisoa sa benzyl dimethylamine se sebelisoang haholo indastering ea polyurethane, haholo-holo lits'ebetsong tsa foam e thata. E sebetsa hantle haholo tlhahisong ea foam e thata ea polyurethane, e nang le litšobotsi tse ntle tsa ho thibela mocheso le botsitso ba sebopeho 'me hangata e sebelisoa ho fafatsa ho thibela foam.
Melemo e meholo ea MXC-BDMA lits'ebetsong tsa foam ea spray e kenyelletsa:
Ho phalla ha metsi kapele ho ile ha eketseha: MXC-BDMA e netefatsa hore motsoako oa polyurethane o boloka mokelikeli o motle nakong ea mehato ea pele ea ts'ebetso ea foam, e o lumella ho phalla habonolo le ho tlatsa likheo kapa Libaka tse sa tloaelehang.
Sebopeho sa sele se tšoanang: Sesebediswa sena se kgothaletsa ho thehwa ha dipululana tse nyane, tse tshwanang ka hara foam, ka hona se ntlafatsa ho kwahela mocheso le ho netefatsa botsitso ba mechini. Sebopeho sa sele se tshwanang se boetse se thusa foam ho boloka moya o tiileng o tswelang pele, e leng se ntlafatsang bokgoni ba matla ba ho kwahela mocheso.
Ho khomarela ka matla ho substrates: MXC-BDMA e thusa ho ntlafatsa ho khomarelana pakeng tsa foam le lintho tse fapaneng tse kang lehong, tšepe le konkreite. Sena se netefatsa hore foam e fafatsang e khomarela ka thata holim'a metsi a sebelisitsoeng, esita le libakeng tse thata.
MXC-TMA: Sehokelo sa Litsamaiso tsa Foam tsa Polyisocyanurate
Sesebediswa se seng sa bohlokwa sa ho kenya disebedisweng tsa polyurethane tse fafaditsweng ke MXC-TMA (CAS 75-50-3), sesebediswa se thehilweng ho trimethylamine se loketseng haholo disebedisweng tsa foam ya polyisocyanurate (PIR). Foam ya PIR e tshwana le foam ya polyurethane, empa foromo ena e na le karolo e hodimo ya di-isocyanate. Phetoho ena e fa foam botsitso bo boholo ba mocheso le ho hanyetsa mollo, e leng se etsang hore e be kgetho e pharaletseng bakeng sa ditshebediso tsa ho kenya mocheso moo ho hanyetsa mollo ho leng bohlokwa.
MXC-TMA e kenya letsoho litsamaisong tsa PIR ka litsela tse 'maloa tsa bohlokoa:
Ho lumellana le litsamaiso tsa PIR: MXC-TMA e ntlafalitsoe bakeng sa mekhoa ea foam ea polyisocyanurate ho tsamaisa karabelo ka katleho le ho netefatsa hore foam e fola ka ho lekana le ka botlalo.
Khanyetso e ntlafetseng ea mollo: Foam ea PIR e na le khanyetso e phahameng ea malakabe ha e bapisoa le foam e tloaelehileng ea polyurethane. Tšebeliso ea MXC-TMA mefuteng ea PIR e ntlafatsa thepa ena, e leng se etsang hore e be khetho ea lits'ebetso libakeng tse ka tukang kapa tse nang le mocheso o phahameng.
Sebopeho sa foam e tsitsitseng: Ho tšoana le MXC-BDMA, MXC-TMA e netefatsa hore foam e etsa sebopeho se tšoanang sa sele, e leng sa bohlokoa bakeng sa ho boloka thepa ea ho thibela mocheso ka nako e telele.
Liforo tsa PIR tse nang le MXC-TMA li sebelisoa hangata marulelong a khoebo, ho kenya thepa leboteng, le lits'ebetsong tse ling tsa ho kenya thepa le ho sireletsa mollo tse hlokang ho kenya thepa le ho sireletsa mollo.
Bohlokoa ba Li-Catalyst ho Spray Foam Insulation
Qetellong, di-catalyst tsa polyurethane tse kang MXC-BDMA le MXC-TMA ke dikarolo tsa bohlokwa ditsamaisong tsa ho kwahela foam ya spray. Di thusa ho laola ho sebetsa ha yona, ho ntlafatsa phallo ya foam le ho tshwana, le ho netefatsa ho kgomarelana le botsitso bo matla.
Nako ea poso: Tshitwe-11-2024