Zogulitsa

Polyurethane (PU), dzina lonse la polyurethane, ndi mtundu wa macromolecular pawiri.Linapangidwa ndi Otto Bayer mu 1937. Polyurethane imagawidwa mu mtundu wa polyester ndi polyether mtundu.Zitha kupangidwa kukhala pulasitiki ya polyurethane (makamaka pulasitiki ya thovu), ulusi wa polyurethane (wotchedwa spandex ku China), mphira wa polyurethane ndi elastomer.Soft polyurethane makamaka ndi thermoplastic linear structure, yomwe imakhala ndi kukhazikika bwino, kukana kwa mankhwala, kulimba mtima komanso makina amakina kuposa zida za thovu la PVC, ndipo imakhala ndi kupindika pang'ono.Kutentha kwabwino, kutsekereza mawu, kukana kugwedezeka komanso magwiridwe antchito a anti-virus.Chifukwa chake, imagwiritsidwa ntchito ngati kuyika, kutsekereza mawu ndi zida zosefera.Pulasitiki yolimba ya polyurethane ndi yopepuka, yodziwika bwino pakutchinjiriza mawu ndi kutsekereza kutentha, kukana mankhwala, kumagwira ntchito bwino pamagetsi, kosavuta kukonza, komanso kumayamwa madzi ochepa.Amagwiritsidwa ntchito kwambiri pomanga, magalimoto, makampani oyendetsa ndege komanso zida zopangira matenthedwe.Ntchito ya polyurethane elastomer ili pakati pa pulasitiki ndi mphira, yomwe imagonjetsedwa ndi mafuta, abrasion, kutentha kochepa, kukalamba, kuuma kwakukulu ndi kusungunuka.Amagwiritsidwa ntchito makamaka m'makampani opanga nsapato komanso mafakitale azachipatala.Polyurethane itha kugwiritsidwanso ntchito kupanga zomatira, zokutira, zikopa zopangira, etc