ʻO Polyurethane (PU), nona ka inoa piha he polyurethane, he pūhui polymer.Ua hana ʻia e Otto Bayer a me nā mea ʻē aʻe i ka makahiki 1937. ʻElua mau ʻano o ka polyurethane: polyester type a polyether type.Hiki iā lākou ke hana i loko o nā plastic polyurethane (ka nui o ka foam), nā fiber polyurethane...
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