Polyurethane (PU), ine zita rakazara polyurethane, inhengo yepolymer.Yakagadzirwa naOtto Bayer nevamwe muna 1937. Polyurethane ine mapoka maviri: polyester type uye polyether type.Inogona kugadzirwa kuva polyurethane mapurasitiki (kunyanya furo), polyurethane fibers (inonzi spandex kuChina), polyurethane rubber uye elastomers.
Yakapfava polyurethane inonyanya kuve ne thermoplastic linear chimiro.Iyo ine kugadzikana kurinani, makemikari kuramba, kusimba uye michina zvivakwa pane PVC furo zvinhu, uye ine kushoma compression deformation.Yakanaka kupisa kupisa, kuvharidzira ruzha, anti-vibration uye anti-virus kuita.Naizvozvo, inoshandiswa sekurongedza, kuvharidzira ruzha, uye sefa zvinhu.
Rigid polyurethane plastiki ine huremu hwakareruka, yakanakisa kuvharidzira ruzha, kupisa kupisa kuita, makemikari kuramba, kuita kwakanaka kwemagetsi, kugadzirisa nyore, uye kunyura kwemvura.Inonyanya kushandiswa sechinhu chekugadzira kuvaka, mota, indasitiri yendege, uye kupisa kwemafuta.
Zvinhu zve polyurethane elastomer zviri pakati pepurasitiki nerabha, mafuta kuramba, abrasion resistance, yakaderera tembiricha kuramba, kuchembera kuramba, kuomarara kwakanyanya uye elasticity.Inonyanya kushandiswa muindasitiri yeshangu uye indasitiri yezvokurapa.Polyurethane inogona zvakare kushandiswa kugadzira anonamira, machira, synthetic dehwe, nezvimwe.
Polyurethane yakaonekwa muma1930s.Mushure memakore anoda kusvika makumi masere ekuvandudzwa kwetekinoroji, chinyorwa ichi chave kushandiswa zvakanyanya mumunda wemidziyo yepamba, kuvaka, zvinodiwa zvezuva nezuva, zvekufambisa, uye midziyo yemumba.
Musika wepasi rose we polyurethane unonyanya kuwanikwa munyika dzakabudirira muEurope neAmerica.Dunhu reAsia-Pacific rinonyanya kumiririrwa neChina, Japan, neSouth Korea.Nyika dziri pamusoro uye matunhu anotora 90% yemusika wepasi rose we polyurethane.Pakati pavo, nyika yangu yakazara polyurethane yekushandisa inoverengera hafu yenyika.Kune akawanda marudzi ezvigadzirwa zvepolyurethane munyika uye anoshandiswa munzvimbo dzakasiyana siyana.Pakupera kwegore ra2016, kuburitswa kwepolyurethane pasi rose kwasvika pamamiriyoni makumi maviri nemaviri ematani.
Nguva yekutumira: Jun-03-2019