Ukuze wehlise izindleko zomkhiqizo futhi uthole ukusebenza okwengeziwe,i-polyurethane thermoplasticama-elastomers angasetshenziswa njengama-ejenti aqinisayo asetshenziswa kakhulu ukuze kuqiniswe izinto ezisetshenziswayo zenjoloba eziguquliwe ze-thermoplastic.
Ngenxa yei-polyurethanengokuba i-polar polar kakhulu, ingahambisana ne-polar resins noma ama-rubber, njengalapho isetshenziswa ngokuhambisana ne-chlorinated polyethylene (CPE) ukukhiqiza imikhiqizo yezokwelapha; Ukuxutshwa ne-ABS kungangena esikhundleni sokusetshenziswa kwepulasitiki ye-thermoplastic yobunjiniyela; Uma isetshenziswa ihlanganiswe ne-polycarbonate (PC), inezinto ezifana nokumelana nowoyela, ukumelana nophethiloli, nokumelana nomthelela, futhi ingasetshenziswa ukwenza imizimba yezimoto; Ukuxuba nge-polyester kungathuthukisa ukusebenza kwayo kokuqina; Ngaphezu kwalokho, ingahambisana kahle ne-polyvinyl chloride, i-polyoxymethylene (POM), noma i-polyvinylidene chloride; I-polyester polyurethane ingahambisana kahle nerabha ye-nitrile engu-15% noma irabha ye-nitrile engu-40%/i-polyvinyl chloride eyinhlanganisela yerabha; I-polyether polyurethane nayo ingahambisana kahle ne-adhesive ye-nitrile ye-nitrile/polyvinyl chloride blend blend; Ingase futhi ihambisane ne-acrylonitrile styrene (SAN) copolymers; Ingenza uhlaka lwenethiwekhi ye-interpenetrating (IPN) ngama-polysiloxanes asebenzayo. Iningi lezinamathiselo ezihlanganisiwe ezibalwe ngenhla sezivele zakhiqizwa ngokusemthethweni.
Eminyakeni yamuva nje, kuye kwaba nenani elandayo locwaningo mayelana nokuqiniswa kwe-POM ngoI-TPUeChina. Ukuhlanganiswa kwe-TPU ne-POM akuthuthukisi kuphela ukumelana nezinga lokushisa eliphezulu kanye nezakhiwo zemishini ze-TPU, kodwa futhi kwenza i-POM ibe nzima kakhulu. Abanye abacwaningi babonise ukuthi ezivivinyweni eziqinile zokuphuka, uma kuqhathaniswa ne-POM matrix, ama-alloys e-POM ane-TPU angeziwe ashintshashintsha ukusuka ekuqhekekeni okuqinile kuya ekuqhekekeni kwe-ductile. Ukwengezwa kwe-TPU futhi kunikeza i-POM ngokusebenza kwenkumbulo yomumo. Isifunda esicwebezelayo se-POM sisebenza njengesigaba esinqunyiwe sengxubevange yememori yomumo, kuyilapho isifunda esine-amorphous se-amorphous TPU ne-POM sisebenza njengesigaba esibuyiseleka emuva. Uma izinga lokushisa lokuphendula lokuthola kabusha lingu-165 ℃ futhi isikhathi sokuthola kabusha singu-120 s, izinga lokutholwa kwe-alloy lifinyelela ngaphezu kwama-95%, futhi umphumela wokubuyisela ungcono kakhulu.
I-TPU inzima ukuhambisana nezinto ezingezona i-polar polymer ezifana ne-polyethylene, i-polypropylene, irabha ye-ethylene propylene, irabha ye-butadiene, irabha ye-isoprene, noma i-waste rubber powder, futhi ayikwazi ukukhiqiza izinto eziyinhlanganisela ngokusebenza kahle. Ngakho-ke, izindlela zokwelapha ezingaphezulu njenge-plasma, ukukhishwa kwe-corona, i-chemistry emanzi, i-primer, ilangabi, noma amagesi asebenzayo ngokuvamile asetshenziselwa lokhu kwakamuva. Isibonelo, imikhiqizo yomoya yaseMelika kanye nezinkampani zamakhemikhali zingathuthukisa kakhulu i-modulus egobayo, amandla aqinile, nokumelana nokugqoka kwe-ultra-high molecular weight polyethylene powder emihle enesisindo se-3-5 million ngemva kokwelashwa kwe-F2 / O2 esebenzayo yegesi, kanye yengeza kuma-polyurethane elastomers ngesilinganiso esingu-10%. Ngaphezu kwalokho, i-F2/O2 esebenzayo yokwelapha indawo yegesi esebenzayo ingasetshenziswa kumafayibha amafushane amade anobude obuyi-6-35mm okukhulunywe ngawo ngenhla, okungathuthukisa ukuqina kanye nokudabula ukuqina kwezinto eziyinhlanganisela.
Isikhathi sokuthumela: Jan-19-2024