Category: Thermoplastic Polyurethane Elastomer

Thermoplastic polyurethane elastomer, e tsejoang hape e le TPU, ke mofuta oa (AB) n block linear polymer. A e emela boima bo phahameng ba molek'hule (1000 ~ 6000) polyester kapa polyether, 'me B e emela diol e nang le liathomo tsa carbon tse 2 ~ 12 tse otlolohileng. Sebopeho sa lik'hemik'hale pakeng tsa likarolo tsa AB ke disocyanate. Thermoplastic polyurethane rabara e itšetleha ka intermolecular hydrogen bonding cross-linking kapa bonolo cross-linking pakeng tsa macromolecular liketane. Ka ho eketseha kapa ho fokotseha ha mocheso, likarolo tsena tse peli tse kopanyang li na le ho fetoha. Boemong ba ho qhibiliha kapa boemo ba tharollo, matla a intermolecular pakeng tsa limolek'hule aa fokola, 'me ka mor'a ho pholile kapa ho fetoha mouoane oa mokelikeli, matla a matla a intermolecular a li kopanya hammoho ho tsosolosa ts'ebetso e tiileng ea pele. E tloaelehileng TPU e kenyelletsa spandex, joalo-joalo.

Kenyelletso e khutšoanyane

Thermoplastic polyurethane elastomer (TPU) ke mofuta oa lintho tse rekerehang tse ka etsoang polasetiki ka ho futhumatsa le ho qhibiliha ka lihlapolli. E na le thepa e felletseng e felletseng joalo ka matla a phahameng, ho tiea ho hoholo, ho hanyetsa le ho hanyetsa oli, hammoho le ts'ebetso e ntle ea ts'ebetso. E sebelisoa haholo liindastering tse kang tšireletso ea naha, bongaka le lijo.

Ka ts'ebetso ea eona e ntle haholo le ts'ebeliso e pharaletseng, thermoplastic polyurethane elastomer e fetohile e 'ngoe ea lisebelisoa tsa bohlokoa tsa thermoplastic elastomer. Ha e le hantle, limolek'hule tsa eona li na le mela 'me li na le lik'hemik'hale tse kopanyang ho fokolang kapa ha li na tsona. Ho na le li-cross-link tse ngata tse entsoeng ka maqhama a haedrojene pakeng tsa liketane tsa molek'hule tsa polyurethane, 'me li-hydrogen bond li bapala karolo ea ho matlafatsa morphology ea tsona, ka hona li fana ka thepa e mengata e babatsehang e kang modulus e phahameng, matla a phahameng, ho hanyetsa ho apara hantle, ho hanyetsa lik'hemik'hale, ho hanyetsa hydrolysis. , ho hanyetsa mocheso o phahameng le o tlaase, le ho hanyetsa hlobo. Lintho tsena tse ntle haholo li etsa hore thermoplastic polyurethane e sebelisoe haholo libakeng tse ngata tse kang lieta, likhoele, liaparo, likoloi, bongaka le bophelo bo botle, liphaephe, lifilimi le maqephe. Sehlahisoa sa ho qetela ka kakaretso ha se hloke vulcanization cross-linking, e ka khutsufatsang potoloho ea karabelo le ho fokotsa tšebeliso ea matla. Kaha ha e le hantle ke polymer ea sebopeho sa linear, theknoloji le lisebelisoa tse tšoanang le tsa polasetiki ea thermoplastic li ka sebelisoa bakeng sa ts'ebetso, joalo ka ho bopa ente, extrusion, blow molding, le calendering, e loketseng haholo tlhahiso ea bongata ba likarolo tse mahareng le tse nyane. Lisebelisoa tsa litšila li ka sebelisoa hape le ho sebelisoa hape, 'me li-additives tse fapaneng kapa li-filler li ka sebelisoa molemong oa tlhahiso kapa ts'ebetsong ho ntlafatsa thepa e itseng ea' mele le ho fokotsa litšenyehelo.

tlhophiso

Thermoplastic polyurethane elastomers e ka aroloa ka mefuta e 'meli: mofuta oa polyester le mofuta oa polyether. Ke likaroloana tse tšoeu tse sa tloaelehang tse chitja kapa tse kholo tse nang le boima ba 1.10 ~ 1.25g/cm3. Boima ba mofuta oa polyether bo nyane ho feta ba mofuta oa polyester. Mocheso oa phetoho ea khalase oa mofuta oa polyether ke 100.6 ~ 106.1 ℃, athe oa mofuta oa polyester ke 108.9 ~ 122.8 ℃. Thempereichara ea brittle ea mefuta ea polyether le polyester e tlase ho -62 ℃, 'me ho hanyetsa mocheso o tlase oa mofuta oa polyether ho molemo ho feta oa mofuta oa polyester.

bath

Litšobotsi tse hlahelletseng tsa thermoplastic polyurethane elastomers ke khanyetso e ntle ea ho roala, ho hanyetsa ozone hantle haholo, ho thatafala ho phahameng, matla a phahameng, elasticity e ntle, le ho hanyetsa mocheso o tlase. Li boetse li na le khanyetso e ntle ea oli, khanyetso ea lik'hemik'hale, le ho hanyetsa tikoloho. Libakeng tse mongobo, botsitso ba hydrolysis ba mofuta oa polyether bo phahame haholo ho feta ba mofuta oa polyester.

Theknoloji e Ncha le Tšebeliso e Ncha

TPU ke indasteri e ntseng e hola ka potlako, e nang le theknoloji e ncha, lihlahisoa le lits'ebetso tse hlahang khafetsa. TPU e 'nile ea sebelisoa haholo liindastering tse sa tšoaneng, ho akarelletsa le lieta, liaparo, liphaephe, lifilimi le maqephe, lithapo, likoloi, kaho, tlhokomelo ea bophelo bo botle, ts'ireletso, lipapali le boikhathollo. TPU e amoheloa e le mofuta o mocha o motala le o se nang tikoloho oa thepa ea polymer e nang le ts'ebetso e ntle haholo. Hona joale, TPU e sebelisoa haholo-holo tšebelisong e tlaase, ha tšebeliso e phahameng e laoloa ke lik'hamphani tse ling tsa machaba, ho akarelletsa le Bayer ea Jeremane le BASF, le United States' Lubrizol le Huntsman, tse ntseng li eketsa boiteko ba tsona ba lipatlisiso le nts'etsopele ea lihlahisoa tse ncha. Phaello ea boleng bo holimo TPU lihlahisoa li ntse li ntlafatsoa le ho kenngoa 'marakeng, le TPU thepa e fetohile e 'ngoe ea thepa ea thermoplastic e hōlang ka potlako.

• Lieta: li-logos tsa lieta tsa lipapali, li-cushions tsa moea tsa lieta tsa lipapali, lieta tse tsamaeang ka maoto, lieta tsa lehloa, lieta tsa golf, li-skate tsa leqhoa le lisebelisoa tsa lesela le lesela.
• Liaparo: lijakete tsa ski, lijase tsa pula, lijaki tse thibelang serame, liaparo tsa masimong, maleiri, borikhoe ba 'mele, le lisebelisoa tse kopaneng tsa masela (tse sa keneleng metsi le tse phefumolohang).
• Bongaka: mese ea ho buoa, likatiba, lieta, lipache tsa sepetlele, mekotlana ea leqhoa, libandeji, mekotla ea plasma, libandeji tsa ho buoa, limaske, le masela le lisebelisoa tsa lesela, mekotla ea moea ea bethe ea ho buoa.
• Lihlahisoa tsa ts'ireletso: litanka tsa mafura a lifofane, lifilimi tsa polokelo ea libetsa, lifensetere tsa litente, mekotla ea sesole ea metsi, lijaki tsa pholoso, liketsoana tse nang le moea o fokang, le lisebelisoa tsa masela le mela, mekotla ea moea.
• Lisebelisoa tsa lipapali: libaka tsa bolo ea maoto le li-tubes tse ka hare, libethe tse nang le moea o fofang, mekotla ea metsi, li-gloves tsa ski ( mekotla e sa keneleng metsi), lisutu tsa ho qoela, libaki tsa ho thella, li-swimsuits, skis, li-logos, li-airbags, lihempe tsa lipapali, liaparo tse thellang, lesela le thepa ea ho roala.
• Lihlahisoa tsa indasteri: meqomo ea rabara ea pampiri ea sebui, likhoele tse sa keneleng metsi, lisebelisoa tsa ho koala molumo, lisebelisoa tse sa cheng, liaparo tse sa cheng, lesela le sa cheng, le masela le lisebelisoa tse kopaneng, terata le thepa ea kantle ea cable.
• Litšebeliso tse ling: linotlolo tsa mehala ea thelefono, lintho tsa ho bapala tsa polasetiki tse inflatable, lilakane tsa bethe, masela a litafole, likharetene tsa shaoara, masela a thepa ea ka tlung, liaprone, piano, likonopo tsa khomphutha, lijalo tsa filimi, le masela le thepa ea lesela.