Kayayyaki

Polyurethane (PU), cikakken sunan polyurethane, wani nau'in fili ne na macromolecular.Otto Bayer ne ya yi shi a cikin 1937. An raba Polyurethane zuwa nau'in polyester da nau'in polyether.Ana iya yin su zuwa filastik polyurethane (mafi yawan filastik kumfa), fiber polyurethane (wanda ake kira spandex a China), roba na polyurethane da elastomer.Polyurethane mai laushi shine galibi tsarin layi na thermoplastic, wanda ke da mafi kyawun kwanciyar hankali, juriya na sinadarai, juriya da kaddarorin inji fiye da kayan kumfa na PVC, kuma yana da ƙarancin nakasar matsawa.Kyakkyawan rufin zafi, sautin sauti, juriya da aikin rigakafin cutar.Saboda haka, ana amfani da shi azaman marufi, sautin sauti da kayan tacewa.Filastik polyurethane mai ƙarfi yana da haske a cikin nauyi, yana da kyau a cikin sautin sauti da zafin jiki, juriya na sinadarai, mai kyau a cikin aikin lantarki, mai sauƙin sarrafawa, da ƙarancin sha ruwa.Ana amfani da shi musamman a cikin gine-gine, motoci, masana'antar jirgin sama da kuma kayan aikin da za su iya hana zafi.Ayyukan elastomer na polyurethane yana tsakanin filastik da roba, wanda ke da tsayayya ga man fetur, abrasion, ƙananan zafin jiki, tsufa, babban taurin da elasticity.An fi amfani dashi a masana'antar takalma da masana'antar likitanci.Hakanan za'a iya amfani da polyurethane don yin manne, sutura, fata na roba, da dai sauransu