Polasetiki ea Polyurethane (PU)
* Polyurethane (PU) ke khutsufatso ea polyurethane, polyisocyanate le polyhydroxy polymer polymerization, e ka har'a ketane e kholo ea li-polymer tse nang le likarolo tse ngata tsa ketane ea urethane e pheta-phetoang (-NHCOO-) ea metsoako ea polymer.
* Lihlahisoa tsa polasetiki tsa PU tse etselitsoeng motho ka mong
Polyurethane, e tsejoang hape e le polyurethane le polyurethane, ke sehlopha sa limolek'hule tse kholo tse nang le likarolo tse ikhethang tsa urethane ketane e kholo. Mofuta ona oa thepa ea polymer o na le ho tenyetseha ha rabara le matla le ts'ebetso e ntle ea ts'ebetso ea polasetiki, 'me o na le bohlokoa ba bohlokoa ba ts'ebeliso masimong a supileng a maholo a polasetiki, rabara, foam, faeba, liphahlo, likhomaretsi le lipolymer tse sebetsang. Liindastering e sebelisoa haholo mabiling a lebelo le tlase, li-gasket, limmete tsa likoloi le masimo a mang. Bophelong ba letsatsi le letsatsi, polyurethane e sebelisoa ho etsa mefuta e fapaneng ea foam le seponche sa polasetiki.
U ka etsa eng ka PU Plastiki?
Li-elastomer tsa polyurethane ke sehlopha sa thepa e nang le thepa ea rabara le ea polasetiki, e nang le matla a matle a ho thapolla, matla a ho hahoa, ho hanyetsa tšusumetso, ho hanyetsa ho khoholeha, ho hanyetsa boemo ba leholimo, ho hanyetsa hydrolysis, ho hanyetsa oli le melemo e meng.
Haholo-holo e sebelisoa e le thepa ea sebopeho (joalo ka liphaephe, li-gasket, mabanta, li-roller, li-gear, liphaephe, jj.), li-insulator, li-sole tsa lieta le mabili a tiileng. Mohlala, e le poleiti ea sefe ea merafo, e na le lerata le tlaase, ho kenella ho phahameng le ho hanyetsa ho tsofala ho feta poleiti ea sefe ea tšepe ea setso. Ho phaella moo, polyurethane e na le biocompatibility e ntle haholo, e le thepa ea bongaka, e ka sebelisoa ho li-pacemaker, methapo ea mali ea maiketsetso, masapo a maiketsetso, jj.
Tse latelang ke tse ling tsa lits'ebetso tsa Polyurethane (PU)
- Lipalangoang
- Kaho
- Mechine
- Lisebelisoa tsa elektroniki
- Thepa ea ka tlung
- Ho Sireletsa Lijo
- Masela le liaparo
- Letlalo la maiketsetso
- Khatiso
- Indasteri ea Petrochemical
- Lipapali
- Tlhokomelo ea bophelo
Litšobotsi tsa Polyurethane (PU)
* Foam ea polyurethane e arotsoe ka mefuta e 'meli: foam e thata le foam e tenyetsehang, e nang le ho tenyetseha ho hoholo, ho lelefala, matla a khatello le ho tenyetseha, hammoho le botsitso bo botle ba lik'hemik'hale. Ho phaella moo, foam ea polyurethane e na le bokhoni bo botle ba ho sebetsa, ho khomarela, ho kenya mocheso le thepa e meng, e leng karolo ea ts'ebetso e ntle ea thepa ea cushion.
Ka lebaka la sebopeho sa eona, elastomer ea polyurethane e na le likarolo tse bonolo, tse thata tsa ketane tse 2, kahoo ketane ea limolek'hule e ka etsoa ho fa thepa matla a holimo, ho tiea hantle, ho se tsofale, ho se tsofale le thepa e meng e metle, e tsejoang e le "rabara e sa tsofaleng" polyurethane ka nako e le 'ngoe ka ho tenyetseha ho hoholo ha rabara le ho tiea ha polasetiki.
* Lisebelisoa tsa polyurethane li na le polarity e matla, e leng se etsang hore li khone ho kopana ka thata le thepa e ngata 'me li ka sebelisoa e le likhomaretsi tšimong ea ho kopanya.
* Likhomaretsi tsa polyurethane li sebelisoa haholo-holo indastering ea ho paka, ea kaho, ea lehong, ea likoloi le ea lieta.
Thepa ea Polyurethane (PU) e etsoa joang?
Ka lebaka la ho se tšabe metsi ha polyurethane, mokhoa o mocha oa ho kopanya o tlameha ho sebelisoa ho lokisa emulsion ea PU, ts'ebetso ea ho kopanya ea polyurethane e tsamaisoang ke metsi haholo-holo ke e latelang: ① ke oligomer polyol, ketane extender, diisocyanate ho theha boima bo phahameng ba limolek'hule tsa PU pre-polymer; ② e fokotsoa ka mor'a hore pre-polymer e emulsified ka metsing ho etsa karohano.
Mekhoa ea ho lokisa emulsion ea polyurethane e na le mekhahlelo e 'meli e meholo: mokhoa oa emulsification oa kantle le mokhoa oa emulsification oa ka hare.
1. Mokhoa oa ho kopanya ka ntle ke mokhoa oa ho kopanya ka matla ha ho e-na le emulsifier, e nang le ho kuta ho hoholo.
2. Mokhoa oa ho iketsetsa emulsification o etsoa ka ho kenya lihlopha tse phelang metsing ka har'a masapo a limolek'hule tsa polyurethane.
Lihlopha tse phelang ka metsi li kenngoa ka har'a masapo a limolek'hule tsa PU ka katoloso ea ketane ea li-monomer tse phelang ka metsi, tse entsoeng ka lihlopha tse etsang letsoai le li-reagent tse etsang letsoai.
Ho sebelisa hape polasetiki ea polyurethane (PU)
- Ho Sebediswa ha Polasitiki ya Polyurethane (PU) E ka arolwa ka ho sebediswa ha disebediswa tsa mmele le tsa dikhemikhale.Ho sebelisa hape lintho ka mokhoa o sebetsang hantle ho fana ka mokhoa o atlehang le o theko e tlase bakeng sa ho sebelisa hape lintho tse thata tsa polyurethane le metsoako. Boholo ba karoloana ea sehlahisoa sa foam ea polyurethane ea pele bo fokotsoa pele ho ea ho maemo a ka sebelisoang hape lits'ebetsong tsa bobeli. Litšila tse sebelisitsoeng hape, kapa lintho tse ntšitsoeng ts'ebetsong ea tlhahiso, lia senyeha hore e be mefuta e molemo haholoanyane joalo ka li-flakes, granules kapa phofo.Ho sebelisa hape lik'hemik'hale ke mokhoa oa ho arola foam ea polyurethane hore e be thepa e tala ea polyurethane kapa thepa e meng e tala ea lik'hemik'hale ho sebelisoa alcoholysis, amineysis, hydrolysis kapa pyrolysis. Foam ea polyurethane e na le litlamo tsa urethane le urea. Ts'ebetsong ea alcoholysis, aminolysis le alkali hydrolysis, litlamo tsa urethane le urea molek'huleng ea polyurethane lia robeha 'me lia bola ho ba polyols, polyamines e nkhang hamonate, carbon dioxide jj.
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