Iimveliso

I-Polyurethane (PU), igama elipheleleyo le-polyurethane, luhlobo lwe-macromolecular compound.Yenziwe ngu-Otto Bayer ngowe-1937.Zingenziwa kwiplastiki ye-polyurethane (ingakumbi iplastiki ye-foam), i-polyurethane fiber (ebizwa ngokuba yi-spandex e-China), i-rubber ye-polyurethane kunye ne-elastomer.I-polyurethane ethambileyo ubukhulu becala sisakhiwo somgca we-thermoplastic, esinozinzo olungcono, ukuxhathisa iikhemikhali, ukomelela kunye neempawu zoomatshini kunezixhobo zogwebu zePVC, kwaye ine-deformation encinci yoxinzelelo.Ukufakwa kakuhle kobushushu, ukugqunywa kwesandi, ukuxhathisa ukothuka kunye nokusebenza okuchasene nentsholongwane.Ke ngoko, isetyenziselwa ukupakisha, ukugquma isandi kunye nezixhobo zokucoca.Iplastiki ye-polyurethane eqinile ilula ngobunzima, igqwesileyo kwi-insulation yesandi kunye nokugquma ubushushu, ukumelana neekhemikhali, kulungile ekusebenzeni kombane, kulula ukusetyenzwa, kunye nokufunxa okuphantsi kwamanzi.Isetyenziswa ikakhulu kulwakhiwo, kwimoto, kwishishini lokuhamba ngenqwelomoya kunye nezixhobo ze-thermal zokugquma.Ukusebenza kwe-polyurethane elastomer kuphakathi kweplastiki kunye nerabha, ekwazi ukumelana neoli, i-abrasion, ubushushu obuphantsi, ukuguga, ubunzima obuphezulu kunye nokuqina.Isetyenziswa ikakhulu kwishishini lezihlangu kunye neshishini lezonyango.I-polyurethane ingasetyenziselwa ukwenza izinto zokuncamathelisa, iingubo, isikhumba sokwenziwa, njl