polyurethane ea thermoplastic

Thermoplastic Polyurethane (TPU) ke elastomer ea thermoplastic e sebetsang hantle e nang le litšobotsi tse ikhethang tse peli tsa ho tenyetseha ha rabara le ho sebetsa ha polasetiki. E qaliloe ka lekhetlo la pele ka 1937, TPU e fetohile e 'ngoe ea thepa ea polymer e holang ka potlako le e feto-fetohang ka ho fetisisa masimong a indasteri ea sejoale-joale. Ho fapana le polyurethane ea thermoset e tloaelehileng e ke keng ea bōptjoa hape ka mor'a ho fola, TPU e na le polasetiki ea mocheso e ka fetoloang: e nolofala 'me e fetoha e ka bōptjoang ha e futhumatsoa, ​​​​'me e thatafala ho ba boemong bo tiileng bo tsitsitseng ha e pholile, e nolofalletsang ts'ebetso e pheta-phetoang le ho sebelisoa hape ntle le tahlehelo e kholo ea thepa ea sebopeho le ea mechini. Ka lik'hemik'hale, TPU ke copolymer ea block e arotsoeng ka likarolo e entsoeng ka karabelo ea polyaddition ea diisocyanates, polyols ea ketane e telele (polyether kapa polyester), le li-extender tsa ketane ea limolek'hule tse nyane. Sebopeho sa eona sa limolek'hule se na le likarolo tse thata tse fapanyetsanang le likarolo tse bonolo, tse fang TPU melemo ea ts'ebetso e felletseng le e ka fetoloang e e khethollang ho li-elastomer tse ling.

Tshebetso e ikhethang ea TPU e simoloha sebopehong sa eona sa karohano ea microphase e entsoeng ke likarolo tse thata le tse bonolo. Likarolo tse thata, tse entsoeng ka lihlopha tsa urethane, li theha lintlha tsa 'mele tse hokahanyang ka ho kopanya ha haedrojene pakeng tsa limolek'hule, e fa TPU matla a ho tsikinyeha a phahameng, ho tiea, ho hanyetsa ho tsofala le ho hanyetsa mocheso. Likarolo tse bonolo, tse entsoeng haholo-holo ka liketane tse telele tsa polyether kapa polyester, li fa thepa tenyetseho e ntle, ho tenyetseha, ho hanyetsa mocheso o tlase le ho tiea. Karolelano ea likarolo tse thata le tse bonolo e ka fetoloa ka mokhoa o tenyetsehang nakong ea tlhahiso, e lumellang bahlahisi ho iketsetsa lihlahisoa tsa TPU ka thata e fapaneng, ho tenyetseha le thepa ea mechini ho ikamahanya le litlhoko tse fapaneng tsa indasteri. Ho latela mefuta ea likarolo tse bonolo, TPU ea khoebo e arotsoe haholo ka polyester TPU, polyether TPU le TPU e kopantsoeng, e 'ngoe le e 'ngoe e na le maemo a reretsoeng a ts'ebeliso.

Ho tenyetseha ho Hloahloa le Litšobotsi tsa Mekaniki: TPU e bonts'a ho mamella ho hoholo, matla a ikhethang a ho thaepa le ho taboha, le ho hanyetsa ho matla ha khatello. E ka mamella ho kobeha le ho otlolla khafetsa ntle le ho fetoha ho sa feleng, e phahametse haholo rabara le thepa e tloaelehileng ea polasetiki. – Ho Hanela ho Hloahloa le ho Ngoapa ka Botlalo: Ka e 'ngoe ea li-elastomer tse tloaelehileng tse hanyetsang ho tsofala hantle, TPU e sebelisoa haholo likarolong tse hanyetsanang le ho tsofala tse hlokang tšebeletso ea nako e telele. – Ho Tsitsisa Lik'hemik'hale ho Hoholo: E bontša ho hanyetsa ho matla ho oli, metsi, asiti e qhibilihisang, alkali e qhibilihisang le li-solvent tse ngata tsa tlhaho, e boloka ts'ebetso e tsitsitseng libakeng tse rarahaneng tsa lik'hemik'hale. – Ho Ikamahanya le Tikoloho ho Hloahloa: Polyether TPU e na le ho hanyetsa ho ikhethang ha hydrolysis le ho tiea ha mocheso o tlase, ha polyester TPU e na le ho hanyetsa ho molemo ha oli le botsitso ba mechini. Lisebelisoa tsohle tsa TPU li na le ho hanyetsa ho hotle ha boemo ba leholimo, ho hanela botsofali bo bakoang ke mahlaseli a ultraviolet le liphetoho tsa mocheso. – Ho Ts'ebetso e Ntle le ho Sebelisa Hape: E tšehetsa mahlale a setso a ts'ebetso ea thermoplastic ho kenyeletsoa ho bopa ka ente, ho ntša, ho bopa ka ho phatloha le ho etsa calendering. Lisebelisoa tsa TPU tse senyehileng li ka qhibilihisoa le ho sebelisoa hape, ho latela likhopolo tsa tlhahiso tse tala le tse tsitsitseng.

Polyester TPU: E khetholloa ka matla a phahameng a mechini, ho hanyetsa oli hantle, ho hanyetsa ho tsofala le ho hanyetsa botsofali. E sebelisoa haholo lisebelisoa tsa indasteri, thepa ea lieta, likarolo tsa ho tiisa le lihlahisoa tse thata tsa elastic. – Polyether TPU: E na le ho hanyetsa ha hydrolysis ho hoholo, ho tenyetseha ha mocheso o tlase, thepa e thibelang ho thibela libaktheria le hlobo, le ho ba le boima bo tlase. E loketse lisebelisoa tsa tikoloho ea metsi, lisebelisoa tsa bongaka, liphaephe tse tenyetsehang le lihlahisoa tsa kantle. – TPU e Sebetsang ka ho Ikhethang: Ho kenyeletsoa TPU e thibelang malakabe, TPU e tsamaisang motlakase, TPU e hanelang mocheso o phahameng le TPU e thehiloeng linthong tse phelang. Lilemong tsa morao tjena, TPU e thehiloeng linthong tse phelang e entsoeng ka thepa e tala e nchafatsoang e ntlafetse ka potlako, e fetoha mokhoa o tsitsitseng oa ho sebelisa TPU ea setso e thehiloeng linthong tsa khale.

Ka lebaka la ts'ebetso ea eona e ka fetoloang le melemo e felletseng, TPU e kenelletse liindastering tse fapaneng. Indastering ea thepa ea bareki, e sebelisoa lithapong tsa lieta tsa lipapali, mabokoseng a sireletsang, mabanta a tenyetsehang le thepa ea lipapali. Tlhahisong ea indasteri, e sebetsa e le mabanta a tsamaisang thepa a sa tsofaleng, liphaephe tsa hydraulic, li-gasket tse koalang le likarolo tse thibelang mocheso tsa mechini. Indastering ea likoloi, TPU e sebelisoa likarolong tsa kahare tsa likoloi, likarolo tse sa keneleng metsi le tse monyang tšisinyeho, le liphahlo tse sireletsang tsa kantle. Ho feta moo, e sebelisoa haholo lisebelisoa tsa bongaka, lisebelisoa tsa elektroniki, thepa ea lifofane le liindasteri tse ncha tsa matla.

Ka tswelopele ya maano a tshireletso ya tikoloho e tala le ntlafatso ya diindasteri, indasteri ya TPU e ntse e leba tshebetsong e phahameng, tshebetsong le botsitsong. Dipatlisiso le tshebediso ya TPU e thehilweng hodima bio, TPU e senyehang le mahlale a tlhahiso ya khabone e tlase di fetohile ditsela tse kgolo. Ho sa le jwalo, TPU e fetotsweng e nang le ho lieha ha malakabe a mangata, ho hanyetsa mocheso o phahameng le ho tiya ha mocheso o tlase haholo e ntse e ntshetswa pele ka mehla ho fihlela ditlhoko tse thata tsa masimo a tlhahiso a maemo a hodimo jwalo ka dikoloi tse ntjha tsa eneji le sefofane.