ʻO ka Polyurethane (PU), ka inoa piha o ka polyurethane, he pūhui polymer.Ua hana ʻia e Otto Bayer i ka makahiki 1937. Hoʻokaʻawale ʻia ka polyurethane i ʻelua mau ʻāpana: polyester type a polyether type.Hiki ke hana ʻia i loko o nā plastic polyurethane (ʻo ka nui o nā plastics foamed), polyurethane fibers (kapa ʻia spandex ma Kina), polyurethane rubbers a me nā elastomers.

ʻO ka polyurethane palupalu ka mea nui o ka thermoplastic linear structure, ʻoi aku ka maikaʻi o ke kūpaʻa, ke kūpaʻa kemika, ka resilience a me nā waiwai mechanical ma mua o nā mea PVC foam, a ʻoi aku ka liʻiliʻi o ka deformation compression.Loaʻa iā ia ka insulation thermal maikaʻi, ke kani ʻana o ke kani, ke kū kūʻē ʻana a me ka hana anti-virus.No laila, hoʻohana ʻia ʻo ia e like me ka hoʻopili ʻana, ka insulation kani, ka mea kānana.

He māmā ke kaumaha o ka plastic polyurethane rigid, maikaʻi loa i ka hoʻohaʻahaʻa leo a me ka wela wela, ka pale kemika, nā waiwai uila maikaʻi, ka hana maʻalahi, a me ka haʻahaʻa o ka wai.Hoʻohana nui ʻia ia i ke kūkulu ʻana, kaʻa, ʻoihana mokulele, thermal insulation structural material.ʻO nā waiwai o ka polyurethane elastomers ma waena o ka plastic a me ka rubber, ke kū'ē aila, ke kū'ē i ka lole, ka haʻahaʻa haʻahaʻa haʻahaʻa, ke kūpaʻa kahiko, ka paʻakikī kiʻekiʻe a me ka elasticity.Hoʻohana nui ʻia i ka ʻoihana kāmaʻa a me ka ʻoihana lapaʻau.Hiki ke hoʻohana ʻia ka polyurethane e hana i nā adhesives, coatings, synthetic leather, etc.

Ua puka mai ka Polyurethane i ka makahiki 1930.Ma hope o kahi kokoke i 80 mau makahiki o ka hoʻomohala ʻenehana, ua hoʻohana nui ʻia kēia mea ma ke kahua o ka lako hale, ke kūkulu ʻana, nā mea e pono ai i kēlā me kēia lā, ka lawe ʻana, a me nā mea pono home.

Hōʻike: Aia kekahi o nā ʻike mai ka Pūnaewele, a ua ʻike ʻia ke kumu.Hoʻohana wale ʻia lākou e hōʻike i nā ʻoiaʻiʻo a i ʻole nā ​​​​manaʻo i ʻōlelo ʻia ma kēia ʻatikala.No ke kamaʻilio a me ke aʻo ʻana wale nō lākou, ʻaʻole no nā ʻoihana ʻē aʻe.