E le ho fokotsa litšenyehelo tsa sehlahisoa le ho fumana ts'ebetso e eketsehileng,thermoplastic ea polyurethaneLi-elastomer li ka sebelisoa e le li-toughening agent tse sebelisoang hangata ho tiisa thepa e fapaneng ea thermoplastic le rabara e fetotsoeng.
Ka lebaka lapolyurethaneKaha ke polymer e nang le polar e phahameng haholo, e ka tsamaellana le li-resin tsa polar kapa li-raber, joalo ka ha e sebelisoa hammoho le polyethylene e nang le chlorinated (CPE) ho hlahisa lihlahisoa tsa bongaka; Ho kopanya le ABS ho ka nkela sebaka sa tšebeliso ea polasetiki ea thermoplastic ea boenjiniere; Ha e sebelisoa hammoho le polycarbonate (PC), e na le litšobotsi tse kang ho hanyetsa oli, ho hanyetsa mafura, le ho hanyetsa tšusumetso, 'me e ka sebelisoa ho etsa 'mele ea likoloi; Ho kopanya le polyester ho ka ntlafatsa ts'ebetso ea eona ea ho tiea; Ho phaella moo, e ka tsamaellana hantle le polyvinyl chloride, polyoxymethylene (POM), kapa polyvinylidene chloride; Polyester polyurethane e ka tsamaellana hantle le rabara ea nitrile ea 15% kapa rabara ea motsoako oa nitrile/polyvinyl chloride ea 40%; Polyether polyurethane e ka boela ea tsamaellana hantle le sekhomaretsi sa motsoako oa rabara/polyvinyl chloride sa 40%; E ka boela ea tsamaellana hantle le li-copolymer tsa acrylonitrile styrene (SAN); E ka theha sebopeho sa marang-rang a kenellang (IPN) ka li-polysiloxanes tse arabelang. Bongata ba likhomaretsi tse kopantsoeng tse boletsoeng ka holimo li se li hlahisitsoe ka molao.
Lilemong tsa morao tjena, ho bile le palo e ntseng e eketseha ea lipatlisiso mabapi le ho thatafala ha POM kaTPUChaena. Ho kopanya TPU le POM ha ho ntlafatse feela khanyetso ea mocheso o phahameng le thepa ea mechini ea TPU, empa hape ho matlafatsa POM haholo. Bafuputsi ba bang ba bontšitse hore litekong tsa ho robeha ha tensile, ha ho bapisoa le matrix ea POM, li-alloy tsa POM tse nang le TPU e ekelitsoeng li fetoha ho tloha ho robeheng ha brittle ho ea ho robeheng ha ductile. Ho eketsoa ha TPU ho boetse ho fa POM ts'ebetso ea memori ea sebopeho. Sebaka sa kristale sa POM se sebetsa e le karolo e tsitsitseng ea alloy ea memori ea sebopeho, ha sebaka se sa fetoheng sa TPU le POM e sa fetoheng se sebetsa e le karolo e ka fetoloang. Ha mocheso oa karabelo ea ho hlaphoheloa o le 165 ℃ 'me nako ea ho hlaphoheloa e le 120 s, sekhahla sa ho hlaphoheloa ha alloy se fihla ho feta 95%, 'me phello ea ho hlaphoheloa e molemohali.
TPU e thata ho e tsamaisana le thepa ea polymer e seng ea polar joalo ka polyethylene, polypropylene, rabara ea ethylene propylene, rabara ea butadiene, rabara ea isoprene, kapa phofo ea rabara e lahliloeng, 'me e ke ke ea hlahisa thepa e kopaneng ka ts'ebetso e ntle. Ka hona, mekhoa ea kalafo ea bokaholimo joalo ka plasma, ho qhala ha corona, k'hemistri e metsi, primer, lelakabe, kapa likhase tse arabelang hangata li sebelisoa bakeng sa ea morao-rao. Mohlala, lihlahisoa tsa moea tsa Amerika le lik'hamphani tsa lik'hemik'hale li ka ntlafatsa haholo modulus ea ho kobeha, matla a ho tensile, le ho hanyetsa ho tsofala ha phofo e ntle ea polyethylene e boima ba limolek'hule e nang le boima ba limolek'hule ba limilione tse 3-5 kamora kalafo ea bokaholimo ba khase e sebetsang ea F2/O2, le ho e eketsa ho polyurethane elastomers ka karolelano ea 10%. Ho feta moo, kalafo ea bokaholimo ba khase e sebetsang ea F2/O2 e ka sebelisoa ho likhoele tse khutšoane tse leketlileng tse bolelele ba 6-35mm tse boletsoeng ka holimo, tse ka ntlafatsang ho tiea le ho taboha ha thepa e kopaneng.
Nako ea poso: Pherekhong-19-2024