I-Polyurethane (PU), igama elipheleleyo le-polyurethane, i-polymer compound, eyaveliswa ngo-1937 ngu-Otto Bayer kunye nabanye. I-polyurethane ineendidi ezimbini eziphambili: i-polyester kunye ne-polyether. Zingenziwa kwiiplastiki ze-polyurethane (ikakhulukazi i-foam), i-polyurethane fibers (eyaziwa ngokuba yi-spandex e-China), irabha ye-polyurethane kunye ne-elastomers. I-polyurethane yimathiriyeli ye-polymer ekulungele ukusetyenziswa njengesigqubuthelo sevili xa kusenziwa ii-casters zoshishino.
Iingenelo eziphambili ze-polyurethane casters zihamba ngolu hlobo lulandelayo:
Okokuqala, ukusebenza koluhlu oluhlengahlengiswayo
Inani lezalathisi zokusebenza komzimba kunye noomatshini zinokuhlengahlengiswa ngokukhethwa kwezinto ezikrwada kunye neefomula, ngaphakathi koluhlu oluthile lweenguqu eziguquguqukayo, ukuze kuhlangatyezwane neemfuno ezizodwa zomsebenzisi ekusebenzeni kwemveliso.
Okwesibini, ukuxhathisa okuphezulu kwe-abrasion
Phambi kwamanzi, i-oyile kunye nezinye iimeko zokusebenza zemithombo yeendaba ezimanzi, ukuxhathisa kwe-polyurethane casters kumaxesha amaninzi ukuya kumaxesha amaninzi kwizinto eziqhelekileyo zerabha. Izinto zetsimbi ezifana nentsimbi kunye nezinye ezinzima, kodwa akunyanzelekanga ukuba zinxibe-resistant!
Okwesithathu, iindlela zokucubungula, ukusetyenziswa okubanzi
I-polyurethane elastomers inokubunjwa ngerabha yenjongo ngokubanzi ngeplastiki, ukuxuba kunye ne-vulcanizing (MPU); zisenokwenziwa kwakhona kwirabha engamanzi, ukugalela kunye nokubumba okanye ukutshiza, ukutywina kunye nokubumba i-centrifugal (CPU); zisenokwenziwa kwakhona kwizinto zegranular kunye neeplastiki eziqhelekileyo ngenaliti, i-extrusion, i-calendering, i-blow molding kunye nezinye iinkqubo (CPU). Iinxalenye ezibunjiweyo okanye ezibunjiweyo zenaliti, ngaphakathi koluhlu oluthile lobunzima, zinokusikwa, ukugaya, ukugrumba kunye nokunye ukusetyenzwa koomatshini.
Okwesine, ukuxhathisa i-oyile, ukuxhathisa i-ozone, ukuxhathisa ukuguga, ukuxhathisa kwi-radiation, ukumelana nobushushu obuphantsi, ukuhanjiswa kwesandi esilungileyo, amandla okunamathela aqinile, ukuhambelana kwe-biocompatibility kunye nokuhambelana kwegazi. Ezi zinto ziluncedo zisesona sizathu sokuba i-polyurethane elastomers isetyenziswa kakhulu emkhosini, kwi-aerospace, kwi-acoustics, kwibhayoloji nakwezinye iindawo.
Ixesha lokuposa: Oct-30-2023