I-Polyurethane (PU), igama elipheleleyo le-polyurethane, yi-polymer compound, eyaveliswa ngo-1937 ngu-Otto Bayer nabanye. I-Polyurethane ineendidi ezimbini eziphambili: i-polyester kunye ne-polyether. Zingenziwa zibe yiplastiki ye-polyurethane (ingakumbi i-foam), iifayibha ze-polyurethane (ezaziwa ngokuba yi-spandex eTshayina), irabha ye-polyurethane kunye nee-elastomers. I-Polyurethane yinto ye-polymer efanelekileyo ukusetyenziswa njengesigqubuthelo sevili ekwenzeni ii-casters zoshishino.
Iingenelo eziphambili ze-polyurethane casters zezi zilandelayo:
Okokuqala, ukusebenza koluhlu oluhlengahlengiswayo
Inani leempawu zokusebenza ezibonakalayo nezoomatshini zinokulungiswa ngokukhetha izinto ezikrwada kunye neefomyula, ngaphakathi koluhlu oluthile lotshintsho oluguquguqukayo, ukuze kuhlangatyezwane neemfuno ezizodwa zomsebenzisi zokusebenza kwemveliso.
Okwesibini, ukumelana nokukrala okuphezulu
Xa kukho amanzi, ioyile kunye nezinye iimeko zokusebenza ezimanzisayo, ii-polyurethane casters zidla ngokuxhathisa ukuguguleka okuphindwe kaninzi kunezixhobo zerabha eziqhelekileyo. Izinto zesinyithi ezifana nentsimbi kunye nezinye izinto eziqinileyo, kodwa azinyanzelekanga ukuba ziguguleke!
Okwesithathu, iindlela zokucubungula, ukusetyenziswa ngokubanzi
Ii-elastomers ze-polyurethane zinokubunjwa ngerabha esetyenziswa ngokubanzi ngokuyibumba ngeplastiki, ukuyixuba kunye nokuyibumba (MPU); zingenziwa zibe yirabha engamanzi, ukuthulula kunye nokubumba okanye ukutshiza, ukuyitywina kunye nokubumba nge-centrifugal (CPU); zingenziwa zibe zizinto ezi-granular kunye neeplastiki eziqhelekileyo ngokuyijova, ukuyikhupha, ukuyicoca, ukuyibumba nge-blow kunye nezinye iinkqubo (CPU). Iindawo ezibunjiweyo ezibunjiweyo okanye ezifakwe nge-injection, ngaphakathi koluhlu oluthile lobunzima, nazo zinokunqunyulwa, zigaywe, zibholwe kunye nezinye iindlela zokucubungula ngoomatshini.
Okwesine, ukumelana neoyile, ukumelana ne-ozone, ukumelana nokwaluphala, ukumelana nemitha, ukumelana nobushushu obuphantsi, ukuhanjiswa kwesandi okulungileyo, amandla okuncamathelisa aqinileyo, ukuhambelana kakuhle kwezinto eziphilayo kunye nokuhambelana kwegazi. Ezi nzuzo zezona zizathu ziphambili zokuba ii-polyurethane elastomers zisetyenziswe kakhulu emkhosini, kwi-aerospace, kwi-acoustics, kwi-biology nakwamanye amacandelo.
Ixesha lokuthumela: Okthobha-30-2023