Ukuze kuncitshiswe iindleko zemveliso kwaye ufumane umsebenzi owongezelelweyo,polyurethane thermoplasticii-elastomers zinokusetyenziswa njengee-agent zokuqina eziqhele ukusetyenziswa ukuqinisa izixhobo ezahlukeneyo ze-thermoplastic kunye nerabha elungisiweyo.
Ngenxa yei-polyurethaneukuba yipolymer ephezulu kakhulu, inokuhambelana ne-polar resins okanye i-rubbers, njengokuba isetyenziswe ngokudibanisa ne-chlorine polyethylene (CPE) ukuvelisa iimveliso zonyango; Ukudibanisa kunye ne-ABS kunokutshintsha ukusetyenziswa kweeplastiki ze-thermoplastic zobunjineli; Xa isetyenziswe ngokudibeneyo kunye ne-polycarbonate (i-PC), ineepropati ezifana nokuchasana kweoli, ukuxhathisa i-fuel, kunye nokuchasana kwempembelelo, kwaye ingasetyenziselwa ukwenza imizimba yemoto; Ukudibanisa ne-polyester kunokuphucula ukusebenza kwayo kokuqina; Ukongezelela, inokuhambelana kakuhle ne-polyvinyl chloride, i-polyoxymethylene (POM), okanye i-polyvinylidene chloride; I-polyester polyurethane inokuhambelana kakuhle ne-15% yerabha ye-nitrile okanye i-40% yerabha ye-nitrile / i-polyvinyl chloride yomxube werabha; I-polyether polyurethane iyakwazi ukuhambelana kakuhle ne-40% yerabha ye-nitrile / i-polyvinyl chloride yokudibanisa i-adhesive; Iyakwazi ukuhambelana ne-acrylonitrile styrene (SAN) copolymers; Inokwenza i-interpenetrating network (IPN) isakhiwo kunye ne-polysiloxanes esebenzayo. Uninzi lwezi zixhobo zokuncamathela ezixutyiweyo ezikhankanywe ngasentla sele ziveliswe ngokusemthethweni.
Kwiminyaka yakutshanje, kuye kwakho inani elandayo lophando malunga nokuqiniswa kwe-POM ngoTPUeTshayina. Ukudityaniswa kwe-TPU kunye ne-POM akuphuculi kuphela ukuxhathisa ubushushu obuphezulu kunye neempawu zemishini ye-TPU, kodwa ikwaqinisa kakhulu i-POM. Abanye abaphandi babonise ukuba kwiimvavanyo zobunzima bokuphuka, xa kuthelekiswa ne-POM matrix, ii-alloys ze-POM ezinokongezwa kwe-TPU zingena kwinguqu ukusuka kwi-brittle fracture ukuya kwi-ductile fracture. Ukongezwa kwe-TPU kukwanika iPOM ngokusebenza kwememori yemilo. Ummandla we-crystalline we-POM usebenza njengesigaba esisisigxina se-alloy memory alloy, ngelixa ummandla we-amorphous we-TPU ye-amorphous kunye ne-POM isebenza njengesigaba sokubuyisela umva. Xa iqondo lokushisa lokuphendula lokubuyisela liyi-165 ℃ kwaye ixesha lokubuyisela liyi-120 s, izinga lokubuyisela i-alloy lifikelela ngaphezu kwe-95%, kwaye umphumo wokubuyisela ungcono.
I-TPU inzima ukuba ihambelane nezixhobo zepolymer ezingezona i-polar ezifana ne-polyethylene, i-polypropylene, i-ethylene propylene irabha, i-butadiene irabha, i-rubber ye-isoprene, okanye i-rubber inkunkuma yepowder, kwaye ayikwazi ukuvelisa izinto ezidibeneyo kunye nokusebenza kakuhle. Ke ngoko, iindlela zonyango ezingaphezulu njengeplasma, ukukhutshwa kwe-corona, ikhemistri emanzi, i-primer, ilangatye, okanye iigesi ezisebenzayo zihlala zisetyenziselwa okokugqibela. Umzekelo, iimveliso zomoya waseMelika kunye neenkampani zeekhemikhali zinokuphucula kakhulu imodyuli yokugoba, amandla aqinile, kunye nokumelana nokunxitywa kwe-ultra-high molecular weight polyethylene powder ecikizekileyo kunye nobunzima bemolekyuli ye-3-5 yezigidi emva kwe-F2 / O2 esebenzayo yonyango lomphezulu wegesi, kunye yongeza kwi-polyurethane elastomers kwi-10%. Ngaphezu koko, i-F2 / O2 i-gas esebenzayo yonyango ye-gas surface ingasetyenziswa kwi-oriented elongated short fibers kunye nobude be-6-35mm ekhankanywe ngasentla, enokuphucula ukuqina kunye nokukrazula ukuqina kwezinto ezidibeneyo.
Ixesha lokuposa: Jan-19-2024