Li-elastomer tsa polyurethane ke thepa e feto-fetohang e bonts'ang litšobotsi tse ntle tsa mechini tse kang ho tenyetseha ho hoholo, ho hanyetsa ho tsofala le ho tšoarella. Litšobotsi tsena li etsa hore li lokele mefuta e fapaneng ea lits'ebetso tsa indasteri, ho kenyeletsoa likarolo tsa likoloi, lieta, li-sealant le li-coat. Tlhahiso ea li-elastomer tsa polyurethane e hloka taolo e nepahetseng ea lik'hemik'hale tse amehang, haholo-holo ha ho etsoa tlamo ea urethane pakeng tsa polyol le isocyanate. Li-catalyst tsa polyurethane li bapala karolo ea bohlokoa mona.
Li-catalyst tsa polyurethaneli khona ho laola lebelo le katleho ea karabelo ea polyurethane. Li susumetsa tekano lipakeng tsa liketso tsa gelation (polyol-isocyanate) le foam (water-isocyanate), e leng se khethollang ka ho toba litšobotsi tsa ho qetela tsa elastomer. Ka ho khetha catalyst e nepahetseng, bahlahisi ba ka ntlafatsa maemo a ts'ebetso le ho fetola litšobotsi tsa 'mele tsa elastomer ho fihlela litlhoko tse itseng tsa ts'ebeliso.
Sesebediswa se seng sa bohlokwa se sebediswang tlhahisong ya di-elastomer tsa polyurethane ke MXC-37, e tsejwang hape e le dimethylethanolamine ether (DMAEE).MXC-37 ke sesebelisoa sa amine se ntšang mosi o fokolang, se nang le monko o tlase se sebelisoang haholo lits'ebetsong tse hlokang mosi o fokolang oa amine le ts'ebetso e phahameng. Litšobotsi tse ikhethang tsa MXC-37 li etsa hore e tšoanelehe haholo bakeng sa foam e bonolo e thehiloeng ho ester, foam ea microcellular, elastomers, reaction injection molding (RIM) le lits'ebetso tsa ho paka foam e thata.
MXC-37ka Polyurethane Elastomers
MXC-37E fana ka melemo e 'maloa tlhahisong ea li-elastomer tsa polyurethane. Ke sesebelisoa se sebetsang haholo se ntlafatsang ts'ebetso ea ho fofonela 'me se loketse hantle bakeng sa liforomo tse nang le metsi a mangata. Ts'ebetso ea eona ea ho fofonela e phahameng e khothalletsa ho thehoa ha li-bubble ka katleho le sebopeho se ts'oanang sa sele, e leng sa bohlokoa bakeng sa lits'ebetso tse kang li-foam tsa microcellular le li-elastomer.
Litšebelisong tsa elastomer, MXC-37 e netefatsa ho fola ka potlako le ka mokhoa o ts'oanang, e leng se ntlafatsang litšobotsi tsa mechini tsa elastomer, joalo ka matla a ho thaepa le ho tenyetseha ho eketsehileng. Sena se etsa hore e be khetho e tsebahalang bakeng sa tlhahiso ea likarolo tsa elastomer tse tšoarellang tse hlokang ho tenyetseha ho hoholo, joalo ka litiiso, li-gasket le likarolo tsa likoloi.
Ho phaella moo, monko o tlase le thepa ea ho ntša mosi oa MXC-37 le tsona ke molemo o moholo, haholo-holo lits'ebetsong tse amang monko habonolo. Monko oa amine o atisang ho amahanngoa le li-catalyst tsa polyurethane oa fokotseha ha ho sebelisoa MXC-37, e leng se etsang hore e lokele lihlahisoa tse kopanang ka ho toba le bareki, joalo ka lieta le thepa ea ho roka.
Likopo tse Tenyetsehang
Ho tenyetseha ha MXC-37 ha ho felle feela ho li-elastomer, empa ho boetse ho atolohela lits'ebetsong tse ling tsa foam ea polyurethane. Lits'ebetsong tsa foam ea microcellular, e thusa ho hlahisa foam e nang le masoba a manyane le a tšoanang, e leng se ntlafatsang thepa ea ho monya le ho boloka lintho li le boemong bo botle. Ho injection molding ea reaction (RIM), MXC-37 e thusa ho bopa likarolo tse rarahaneng ka potlako, ho eketsa tlhahiso, le ho hlahisa likarolo tse bobebe, tse sebetsang hantle bakeng sa lits'ebetso tsa likoloi le tsa indasteri.
Ho phaella moo, MXC-37 e ka sebediswa ditshebedisong tse thata tsa ho paka foam, moo tshebetso ya yona e phahameng ya foam e netefatsang ho kwahela le ho sireletsa ka katleho. Monko o tlase wa catalyst le thepa ya ho se ntshe mosi le tsona di thusa ditshebediso tsena, di fokotsa tshusumetso ya tikoloho le ho ntlafatsa maemo a sebaka sa mosebetsi.
Qetello
Qetellong, di-catalyst tsa polyurethane tse kangMXC-37 (DMAEE)ke likarolo tsa bohlokoa tlhahisong ea li-elastomer tsa polyurethane le litsamaiso tse ling tsa foam. Bokhoni ba tsona ba ho laola sekhahla sa karabelo, ho ntlafatsa boleng ba foam, le ho fokotsa mosi o tsoang monkong bo li etsa hore li be tsa bohlokoa haholo lits'ebetsong tse fapaneng tsa indasteri. MXC-37, ka ts'ebetso ea eona e phahameng ea foam le thepa ea eona e fokolang ea mosi, e fa bahlahisi tharollo e tšepahalang bakeng sa ho hlahisa lihlahisoa tsa polyurethane tse sebetsang hantle, ho tloha ho li-elastomer ho ea ho li-foam tsa microcellular le liphutheloana tse thata tsa foam.
Nako ea poso: Tshitwe-24-2024