Foam ea polyurethane (PU) e sebelisoa haholo liindastering tse fapaneng ka lebaka la thepa ea eona e feto-fetohang, joalo ka ho kenya mocheso, ho sireletsa mocheso le botsitso ba sebopeho. Tshebetso ea foam tsena e itšetlehile haholo ka mofuta oa foam e hlahisoang, ebang ke sele e bulehileng kapa sele e koetsoeng, le sistimi ea catalytic e sebelisoang ho laola kinetics ea karabelo nakong ea ho thehoa ha foam.Li-catalyst tsa polyurethanee bapala karolo ea bohlokoa ho fetoleng likarolelano tsa sele e bulehileng ho ea ho lisele tse koetsoeng, ho netefatsa hore foam e fihlela litlhoko tse itseng tsa ts'ebeliso. Sengoloa sena se hlahloba phello ea li-catalyst tsa polyurethane mefuteng e fapaneng ea li-foam tsa polyurethane le kamoo li-catalyst tse kang MXC-DPA li ka sebelisoang ho ntlafatsa litšobotsi tsa foam.
Mefuta ea Li-Foam tsa Polyurethane
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Liforo tsa Lisele tse Bulehileng:
- Foam tsa sele e bulehileng li na le sebopeho moo lisele kapa lipululana tse ka har'a foam li hokahaneng, e leng se lumellang moea ho phalla ka har'a tsona. Foam tsena li bobebe, li na le litšobotsi tse ntle tsa ho monya molumo, 'me li sebelisoa hangata ho kenya mocheso oa molumo, ho boloka mongobo le lits'ebetsong tsa boiketlo.
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Foam ea Lisele tse Koetsoeng:
- Ka lehlakoreng le leng, foam ea lisele tse koetsoeng e na le lisele tse arohaneng tse tletseng khase, e leng se etsang hore li be thata haholoanyane, li be teteane, 'me li be le thepa e phahameng ea ho thibela mocheso. Hangata li sebelisoa lits'ebetsong tse kang liphanele tsa ho thibela mocheso, ho thibela foam ea spray, le ho paka moo matla, ho hanyetsa mongobo le ho thibela mocheso li leng bohlokoa.
Karolo ea Li-Catalyst ho Theheng Foam
Li-catalyst li bohlokoa tlhahisong ea foam ea polyurethane kaha li potlakisa liketso lipakeng tsa li-polyol le li-isocyanate, li thusa ho thehoa ha likhokahano tsa urethane le urea. Mofuta le mahloriso a li-catalyst li khetholla sekhahla sa liketso tse peli tse kholo:
- Karabelo ea Gelation: Karabelo ena e lebisa ho thehoeng ha liketane tsa polymer tse fang foam sebopeho sa eona sa sebopeho.
- Karabelo e Matla: Karabelo ena e hlahisa dipululana tsa kgase tse bopang sebopeho sa sele ya foam, ebang ke sele e bulehileng kapa sele e kwetsweng.
Ka ho lokisa tekano pakeng tsa dikarabelo tsena tse pedi, di-catalyst di ka susumetsa sebopeho sa sele, bongata ba foam, le thepa ya mechini, ka hona tsa ama hore na foam e tla ba le sebopeho sa sele se bulehileng kapa se kwetsweng.
Li-catalyst bakeng sa Foam ea Lisele tse Butsoeng le tse Koetsoeng
Lifomong tse bulehileng tsa lisele, ho bohlokoa ho sebelisa li-catalyst tse lumellang ho phunya ho lekaneng ha ka nako e ts'oanang ho netefatsa hore karabelo e fokang e hlahisa sebopeho sa sele se nang le masoba le se hokahaneng. Li-catalyst tse nang le taolo e ntle holim'a ho phunya le ho phunya li netefatsa hore foam ha e tiee haholo 'me e boloka ho tenyetseha le thepa e monyang molumo. Lifomong tse koetsoeng tsa lisele, ho phunya ho potlakileng hangata hoa hlokahala ho tšoasa khase ka har'a lisele, e leng se fellang ka sebopeho se tiileng, se sireletsang mocheso.
Li-catalyst tsa polyurethane tse kangMXC-DPA(N-(3-dimethylaminopropyl)-N,N'-diisopropanolamine, CAS 63469-23-8) di loketse haholo bakeng sa ditshebediso tse hlokang taolo e nepahetseng hodima dikarabelo tsena. MXC-DPA ke sesebediswa se fokotsang mosi se fanang kaho hlapolla hantle le ho phalla ha metsi, e leng se etsang hore e be ntle bakeng sa ho laola sebopeho sa sele le ho thehoa ha foam ka har'a foam ea lisele tse bulehileng le tse koetsoeng.
MXC-DPALitšebelisong tsa Foam ea Lisele tse Butsoeng le tse Koetsoeng
TheMXC-DPAcatalyst e sebelisoa haholo-holo ho li-stabilizer tse thehiloeng ho ether bakeng sa foam e bonolo, foam e bopiloeng ka matla a phahameng (HR), foam ea microcellular, elastomers le foam e tiileng ea ho paka. Mesi e tlase e tsoang, hammoho le eonaho hlapolla hantle le ho phalla ha metsi, e etse khetho e nang le mekhoa e mengata ea ho lokisa sebopeho sa sele ea foam.
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Liforo tsa Lisele tse Bulehileng:
- Ditshebedisong tse kang foam e bonolo e bopilweng ka HR le foam e nyenyane ya disele, MXC-DPA e ntlafatsa ho phutholoha ha foam ha e ntse e dumella katoloso e laolwang ya disele tsa foam. Sena se fella ka foam e bonolo, e tenyetsehang e nang le dibopeho tsa disele tse bulehileng, tse bohlokwa bakeng sa ditshebediso tse hlokang ho hema hantle, boiketlo le ho monya modumo.
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Foam ea Lisele tse Koetsoeng:
- Bakeng sa lifomo tse koetsoeng, tse kang tse sebelisoang lits'ebetsong tse thata tsa ho paka, MXC-DPA e thusa ho fihlela bongata le ho tiea ha foam tse lakatsehang ka ho khothaletsa ho kenella ka potlako ha metsi, ho tšoasa khase ka har'a lisele le ho etsa mokoallo o matla, o sireletsang mocheso. Ho phalla ha eona ho netefatsa hore foam e tlatsa hlobo ka ho lekana, e leng se etsang hore e lokele lits'ebetso tse hlokang ho nepahala ha boholo le matla a sebopeho.
Ho Fetola Likarolelano tsa Lisele tse Butsoeng le tse Koetsoeng ka Li-Catalyst
Metswako ya polyurethane e ka lokiswa ka ho fetola mefuta le ditekanyo tsa catalyst, e leng se amang tekano pakeng tsa dikarolelano tsa sele e bulehileng le sele e kwetsweng.MXC-DPAe sebetsa hantle haholo ho fe baqapi ba di-formulator monyetla wa ho fetola dibopeho tsa foam ka ho laola sekgahla sa karabelo ya dikarolo tsa polyol le isocyanate.
Mohlala, ho eketsa bongata ba MXC-DPA ho ka potlakisa karabelo ea gelation, ho khothaletsa ho thehoa ha lisele tse koetsoeng haholoanyane 'me ha fella ka foam e teteaneng le e thata haholoanyane. Ka lehlakoreng le leng, ho fokotsa khatello ea catalyst kapa ho e kopanya le catalyst e fokang ho ka lebisa meahong e bulehileng haholoanyane ea lisele, ho etsa foam e bonolo le e nang le masoba a mangata.
Qetello
Li-catalyst tsa polyurethane li bapala karolo ea bohlokoa ho khetholleng litšobotsi tsa ho qetela tsa li-foam tsa polyurethane ka ho laola tekano lipakeng tsa li-gelation le liketso tsa ho foka. Ebang ke tsa li-foam tse bulehileng tse sebelisoang lits'ebetsong tsa ho thibela molumo le boiketlo kapa li-foam tse koetsoeng tse etselitsoeng ho kenya mocheso le ho paka, li-catalyst tse kangMXC-DPAfa bahlahisi bokhoni ba ho lokisa litšobotsi tsa foam ho fihlela litlhoko tse itseng tsa ts'ebetso.
Jwalo ka sehlomathiso sa mosi o fokolang se nang le ho kenella hantle le ho phalla ho hotle, MXC-DPA e loketse bakeng sa foam ya polyurethane ya disele tse bulehileng le tse kwetsweng, e leng se etsang hore e be sesebediswa sa bohlokwa bakeng sa di-formulator tsa foam tse batlang ho fihlella tshebetso e ntle ka ho fetisisa ditshebedisong tse fapaneng. Ka ho fetola maemo a di-catalyst, bahlahisi ba ka laola dikarolelano tsa disele tse bulehileng ho ya ho tse kwetsweng tsa foam, ba fana ka ditharollo tse etseditsweng diindasteri ho tloha ho tsa dikoloi ho ya kahong le ho paka.
Nako ea poso: Pherekhong-14-2025