Jwalo ka mofani ya ka sehloohong wa di-catalyst tsa polyurethane, re thabetse ho totobatsa karolo ya bohlokwa eo di-catalyst tsena di e bapalang tlhahisong ya foam ya polyurethane, e leng thepa e feto-fetohang e sebediswang diindastering tse fapaneng. Dihlahiswa tsa rona, ho kenyeletswa MXC-A33, MXC-T le di-catalyst tse ding tse ikgethang, ke karolo ya bohlokwa ya tshebetso ya tlhahiso ya foam ya polyurethane, e netefatsang dikarabelo tse sebetsang hantle le diphetho tse sebetsang hantle.
Mokhoa oa ho Etsa Foam ea Polyurethane
Foam ea polyurethane e hlahisoa ka karabelo ea lik'hemik'hale pakeng tsa diisocyanate le polyols, tseo ka bobeli li nkiloeng oli e tala, leha polyols e ka boela ea etsoa ho tsoa oli ea tlhaho e nchafatsoang. Karabelo ena e fella ka ketane ea polymer e etsang sebopeho sa mantlha sa foam. Tlhahiso ea foam ea polyurethane e kenyelletsa likarolo tse tšeletseng tsa mantlha:
- Li-polyol: Setene sa motheo sa foam, se arabelang ka diisocyanate.
- Diisocyanate: Li-reactant tsa bohlokoa tse kopanang le li-polyol ho etsa foam.
- Lisebelisoa tsa ho ntsha bubble: Tsena di thusa ho bopa sebopeho sa sele sa foam.
- Li-surfactant: Tsitsisa foam nakong ea ts'ebetso ea eona ea katoloso.
- Li-catalyst: Potlakisa karabelo pakeng tsa polyols le diisocyanate, ho netefatsa ho thehoa ha foam hantle.
- Li-Hardeners: Li-crosslink le li-extender tsa ketane li sebelisoa ho ntlafatsa ho tiea le ts'ebetso ea foam.
Ha metsoako ena e kopantswe, e arabela ka lik'hemik'hale, e hlahisa mocheso, khase le sebopeho se ikhethang sa foam. Li-catalyst tse kang MXC-A33 ea rona le MXC-T li nolofatsa karabelo ena, li netefatsa ts'ebetso e laoloang le e sebetsang hantle.
Litšebeliso tsa Catalyst ho Polyurethane Foam
Foam ea polyurethane e tla ka mefuta e 'meli ea mantlha: e thata le e tenyetsehang. Ts'ebeliso e fapana ho tloha ho insulation kahong (foam e thata) ho isa ho cushion ka thepa ea ka tlung le kahare ho likoloi (foam e tenyetsehang). Li-catalyst tsa rona li etselitsoe litlhoko tse fapaneng:
-MXC-A33:Sesebediswa se entsoeng ka 33% TEDA (triphenylenediamine) le 67% DPG (monoconjugated dipropylene glycol), se etselitsoeng ka ho khetheha foam ea polyurethane le polyurethane elastomers. Se sebelisoa haholo ho foam ea polyurethane e bonolo, e thata, e tiileng, le elastomer.
-MXC-T:Ke catalyst ea amine e sebetsang hantle, e se nang mosi e fanang ka mokhoa o boreleli oa karabelo 'me ka hona e ka sebelisoa ho hlahisa mefuta e fapaneng ea foam ea polyurethane. Ketso ea eona ea catalytic e khothalletsa karabelo ea urea (water-isocyanate), e atisang ho arabela le matrix ea polymer ka lebaka la sehlopha sa eona se sebetsang sa hydroxyl. Ka lebaka lena, TMAEA e sebelisetsoa ho fafatsa foam insulation, li-dashboard tsa likoloi, le libaka tse ling tse hlokang monko o tlase o setseng..
Li-catalyst tsa polyurethane li netefatsa sekhahla se nepahetseng sa karabelo, thepa ea foam e lokisoang hantle joalo ka ho teteana, ho thatafala le botšepehi ba sebopeho. Ho nepahala hona ho nolofalletsa foam ea polyurethane ho fihlela litlhoko tse thata tsa liindasteri tsa sejoale-joale, ho kenyeletsoa kaho, likoloi, thepa ea ka tlung le liphutheloana.
Mabapi le rona
Re mofani ea ka sehloohong oa li-catalyst tsa polyurethane tse sebetsang hantle, re ikemiselitse ho fana ka litharollo tse ncha bakeng sa lits'ebetso tse fapaneng tsa indasteri. Moqolo oa rona o moholo oa lihlahisoa o thusa bahlahisi ho ntlafatsa lits'ebetso tsa tlhahiso ea foam ha ba ntse ba fihlela litekanyetso tsa tikoloho le tsa taolo.
Nako ea poso: Mphalane-23-2024