Polyurethane (PU), yemwe dzina lake lonse ndi polyurethane, ndi polima pawiri.Anapangidwa ndi Otto Bayer ndi ena mu 1937. Polyurethane ili ndi magulu awiri: mtundu wa poliyesitala ndi mtundu wa polyether.Atha kupangidwa kukhala mapulasitiki a polyurethane (makamaka thovu), ulusi wa polyurethane ...
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