Thermoplastic polyurethane (TPU) ke thermoplastic elastomer e ka qhibilihang e tšoarellang haholo ebile e tenyetseha. E na le litšoaneleho tsa polasetiki le rabara ka hona e bonts'a thepa e kang ho tšoarella, ho tenyetseha hammoho le matla a matla a ho tsitsa.
TPU, moloko o mocha oa thepa ea thermoplastic elastomer. Sebopeho sa eona se kenyelletsa karolo e thata le karolo e bonolo, e entsoeng ke polyols, isocyanate le chain extender ka karabelo ea condensation.
Likarolo tsa TPU li kenyelletsa botsoalle ba tikoloho, ts'ebetso e bonolo, ts'ebetso e fapaneng, ts'ebetso e nchafalitsoeng joalo-joalo; TPU e na le thepa e ntle ea 'mele, ho hanyetsa abrasion, mebala e bonolo, elasticity e phahameng, ho hanyetsa boemo ba leholimo, ho hanyetsa oli le ho feto-fetoha ha mocheso o tlase joalo-joalo, e sebelisoang haholo fonong. kesi, overmolding, lieta, filimi, sekhomaretsi, lebanta & conveyor, terata & cable joalo-joalo.
Ho ea ka mofuta oa polyols, TPU e ka aroloa ka sehlopha sa polyester, polyether grade, polycaprolactone grade le polycarbonate grade joalo-joalo; ho ea ka mofuta oa isocyanate, TPU e ka aroloa ka TPU e nkhang hamonate le TPU ea aliphatic. Mefuta e fapaneng ea TPU e na le thepa e fapaneng, e ka sebelisoa ts'ebelisong e fapaneng. Mefuta e thata ea TPU e pharaletseng, e koahela 50A-85D.
- Karolo e Bonolo (polyether kapa polyester): E hahiloe ka polyol le isocyanate e fanang ka phetoho le sebopeho sa elastomeric sa TPU.
- Karolo e thata (e nkhang hamonate kapa ea aliphatic): E hahiloe ka ketane ea ketane le isocyanate e fang TPU matla a eona le ts'ebetso ea 'mele.
1. Li-TPU tse nkhang hamonate - tse thehiloeng ho li-isocyanate tse kang MDI
2. Li-TPU tsa Aliphatic - tse thehiloeng ho li-isocyanate tse kang HMDI, HDI le IPDI
Thermoplastic polyurethanes ke rekere ebile e ka qhibiliha. Li-additives li ka ntlafatsa botsitso le ho hanyetsa mocheso, tsa fokotsa khohlano, 'me tsa eketsa ho lieha ha lelakabe, ho hanyetsa li-fungus le boemo ba leholimo.
Li-TPU tse nkhang hamonate ke li-resin tse matla, tse sebelisoang ka kakaretso tse hananang le ho hlaseloa ke likokoana-hloko, li ema hantle ho lik'hemik'hale. Leha ho le joalo, tšitiso ea botle ke tšekamelo ea ho nyenyefatsa ha aromatics ka litsela tsa mahala tse bakoang ke ho pepesehela mocheso kapa khanya ea ultraviolet. Ho senyeha hona ho lebisa ho feto-fetoha ha 'mala oa sehlahisoa le ho lahleheloa ke thepa ea' mele.
Li-additives tse kang li-antioxidants, li-absorber tsa UV, li-stabilizer tse sitisang amine li sebelisoa ho sireletsa polyurethanes ho tsoa ho oxidation e hlahisoang ke khanya ea UV, ka hona ho etsa thermoplastic polyurethanes e loketseng lits'ebetso tse fapaneng tse ka hlokang botsitso ba mocheso le / kapa khanya.
Ka lehlakoreng le leng, Aliphatic TPU, ka tlhaho e tsitsitse ebile e hanela ho fifala ha mahlaseli a UV. Li boetse li hlakile ka mokhoa o hlakileng, e leng se etsang hore e be li-laminate tse loketseng bakeng sa ho koahela likhalase le tšireletso ea glazing.
Nako ea poso: Jul-14-2022