Nā huahana

ʻO ka Polyurethane (PU), ka inoa piha o ka polyurethane, he ʻano mea hoʻohui macromolecular.Ua hana ʻia e Otto Bayer i ka makahiki 1937. Ua māhele ʻia ka polyurethane i ke ʻano polyester a me ke ʻano polyether.Hiki iā lākou ke hana i loko o ka plastic polyurethane (ka nui o ka plastic foam), polyurethane fiber (kapa ʻia spandex ma Kina), polyurethane rubber a me ka elastomer.ʻO ka polyurethane palupalu ka mea nui i 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.ʻO ka hoʻohaʻahaʻa wela maikaʻi, ke kani leo, ke kūpaʻa haʻalulu a me ka hana anti-virus.No laila, hoʻohana ʻia ʻo ia e like me ka hoʻopili ʻana, ka insulation leo a me nā mea kānana.He māmā ke kaumaha o ka plastic polyurethane, maikaʻi loa i ke kani ʻana a me ka wela wela, ke kūpaʻa kemika, maikaʻi i ka hana uila, maʻalahi ke hana, a haʻahaʻa i ka wai.Hoʻohana nui ʻia ia i ke kūkulu ʻana, kaʻa kaʻa, ʻoihana mokulele a me nā mea hana insulation thermal.ʻO ka hana o ka polyurethane elastomer ma waena o ka plastic a me ka rubber, ka mea kū'ē i kaʻaila, abrasion, haʻahaʻa wela,ʻelemakule, kiʻekiʻe paʻakikī a me ka elasticity.Hoʻohana nui ia i ka ʻoihana kāmaʻa a me ka ʻoihana lapaʻau.Hiki ke hoʻohana ʻia ka polyurethane e hana i nā adhesives, coatings, synthetic leather, etc