Litiiso tsa rabara tsa polyurethane, tse entsoeng ka thepa ea rabara ea polyurethane, ke likarolo tsa bohlokoa lits'ebetsong tse fapaneng tsa indasteri. Litiiso tsena li tla ka mefuta e fapaneng, ho kenyeletsoa le masale a O, masale a V, masale a U, masale a Y, litiiso tse khutlonnetsepa, litiiso tse bōpehileng joaloka tse ikhethileng, le li-washer tsa ho tiisa.
Rabara ea polyurethane, e leng polymer ea maiketsetso, e koala sekheo pakeng tsa rabara ea tlhaho le polasetiki e tloaelehileng. E sebelisoang haholo ts'ebetsong ea khatello ea lakane ea tšepe, rabara ea polyurethane eo ho buuoang ka eona haholo-holo ke ea mofuta oa polyester casting. E entsoe ka adipic acid le ethylene glycol, e leng se etsang hore ho be le polymer e nang le boima ba limolek'hule ba hoo e ka bang 2000. Polymer ena e boetse e arajoa ho etsa prepolymer e nang le lihlopha tsa qetello tsa isocyanate. Prepolymer e ntan'o kopanngoa le MOCA (4,4′-methylenebis (2-chloroaniline)) ebe e lahleloa ka har'a liforomo, e lateloa ke vulcanization ea bobeli ho hlahisa lihlahisoa tsa rabara ea polyurethane tse nang le maemo a fapaneng a thata.
Bothata ba litiiso tsa rabara tsa polyurethane bo ka etsoa ho fihlela litlhoko tse itseng tsa ts'ebetso ea tšepe ea lakane, ho tloha ho 20A ho isa ho 90A sekaleng sa boima ba Shore.
Litšobotsi tsa Bohlokoa tsa Tshebetso:
- Ho Hanela ho Tloha ho Ikhethang: Rabara ea polyurethane e bontša ho hanyetsa ho hoholo ha ho tsofala har'a mefuta eohle ea rabara. Liteko tsa laboratori li bontša hore ho hanyetsa ho tsofala ha eona ho feta rabara ea tlhaho ka makhetlo a 3 ho isa ho a 5, 'me lits'ebetso tsa lefats'e la sebele hangata li bontša ho tšoarella ho fihlela makhetlo a 10.
- Matla a Phahameng le ho Tenyetseha: Ka har'a mefuta e thata ea Lebōpo la A60 ho isa ho A70, rabara ea polyurethane e bontša matla a phahameng le ho tenyetseha ho babatsehang.
- Ho Monya Cushion ka Botlalo le ho Monya ka Tšabo: Mochesong oa kamore, likarolo tsa rabara ea polyurethane li ka monya 10% ho isa ho 20% ea matla a ho thothomela, ka sekhahla se phahameng sa ho monya ka maqhubu a eketsehileng a ho thothomela.
- Ho Hanela Oli le Lik'hemik'hale ka Botle: Rabara ea polyurethane e bontša kamano e fokolang bakeng sa oli ea diminerale e seng ea polar 'me e lula e sa angoe haholo ke mafura (joalo ka parafini le peterole) le oli ea mechini (joalo ka oli ea hydraulic le ea ho tlotsa), e sebetsa hantle ho feta rabara ea merero e akaretsang le ho qothisana lehlokoa le rabara ea nitrile. Leha ho le joalo, e bontša ho ruruha ho hoholo ha alcohols, esters le aromatic hydrocarbons.
- Koefficient e Phahameng ea Khohlano: Hangata e kaholimo ho 0.5.
- Matlotlo a Eketsehileng: Ho hanyetsa mocheso o tlase hantle, ho hanyetsa ozone, ho hanyetsa mahlaseli a kotsi, ho thibela motlakase le ho khomarela.
Likopo:
Ka lebaka la thepa ea eona e phahameng ea 'mele le ea mechine, rabara ea polyurethane e sebelisoa khafetsa lits'ebetsong tse sebetsang hantle, ho kenyeletsoa lihlahisoa tse sa tsofaleng, lintho tse matla tse hanelang oli, le likarolo tse thata tse nang le modulus e phahameng. E sebelisoa haholo liindastering tse fapaneng:
- Mechine le Likoloi: Ho etsa likarolo tsa braking tse nang le maqhubu a phahameng, likarolo tsa rabara tse thibelang ho thothomela, liliba tsa rabara, likhokahano le likarolo tsa mechini ea masela.
- Lihlahisoa tse Hanelang Oli: Ho hlahisa lirolara tsa khatiso, litiiso, lijana tsa mafura le litiiso tsa oli.
- Tikoloho e Matla ea Khohlano: E sebelisoa liphaepheng tsa conveyor, liphaepheng tsa lisebelisoa tsa ho sila, li-screen, li-filters, li-sole tsa lieta, mabili a ho khanna ka khohlano, li-bushings, li-brake pad le mabili a libaesekele.
- Ho Hatella le ho Koba ka Serame: E sebetsa e le thepa bakeng sa mekhoa e mecha ea ho hatella le ho koba ka serame, e nkela li-steel tsa tšepe tse jang nako le tse bitsang chelete e ngata sebaka.
- Rabara ea Foam: Ka ho sebelisa karabelo ea lihlopha tsa isocyanate ka metsi ho lokolla CO2, rabara ea foam e bobebe e nang le thepa e ntle ea mechini e ka hlahisoa, e loketseng ho kenya mocheso, ho kenya mocheso, ho thibela molumo le lits'ebetso tsa ho thibela ho thothomela.
- Ditshebediso tsa Bongaka: Di sebediswa dikarolong tse sebetsang tsa rabara, methapong ya madi ya maiketsetso, letlalong la maiketsetso, diphaepheng tsa ho kenya, thepa ya ho lokisa, le ditshebedisong tsa meno.
Nako ea poso: Loetse-17-2025