No ke aha e koho ai i ka polyurethane no nā mīkini wili ʻoihana a he aha kona mau pono?

ʻO Polyurethane (PU), ka inoa piha o ka polyurethane, he hui polymer, i hana ʻia i ka makahiki 1937 e Otto Bayer a me nā mea ʻē aʻe. ʻElua mau ʻano nui o ka Polyurethane: polyester a me polyether. Hiki ke hana ʻia i loko o nā plastics polyurethane (ʻo ia hoʻi ka foam), nā fibers polyurethane (i ʻike ʻia ʻo spandex ma Kina), ka polyurethane rubber a me nā elastomers. He mea polymer ka Polyurethane i kūpono no ka hoʻohana ʻana ma ke ʻano he uhi huila i ka hana ʻana i nā casters ʻoihana.

ʻO nā pono nui o nā mīkini polyurethane penei:

ʻO ka mea mua, ka hana o ka laulā hiki ke hoʻololi ʻia

Hiki ke hoʻoponopono ʻia kekahi mau ʻōuli hana kino a me ka mīkini ma o ke koho ʻana i nā mea maka a me nā ʻano hana, i loko o kahi ākea o nā loli hiki ke hoʻololi ʻia, i mea e hoʻokō ai i nā koi kūikawā a ka mea hoʻohana no ka hana huahana.

ʻO ka lua, ʻoi aku ka maikaʻi o ke kūpaʻa ʻana i ka abrasion
I ke alo o ka wai, ka ʻaila a me nā kūlana hana ʻē aʻe o ka wai, ʻoi aku ka nui o ke kūpaʻa o nā mea hao e like me ke kila a me nā mea paʻakikī ʻē aʻe i ke komo ʻana o nā casters polyurethane i nā manawa he nui a ʻoi aku ka nui o nā manawa ma mua o nā mea rapa maʻamau. ʻO nā mea hao e like me ke kila a me nā mea paʻakikī ʻē aʻe, akā ʻaʻole pono ke kūpaʻa i ke komo ʻana!

ʻO ke kolu, nā ʻano hana, ka hoʻohana ākea
Hiki ke hoʻoheheʻe ʻia nā elastomers polyurethane me ka rubber kumu maʻamau ma o ka plasticizing, mixing and vulcanizing (MPU); hiki ke hana ʻia i loko o ka rubber wai, ka ninini ʻana a me ka hoʻoheheʻe ʻana a i ʻole ka pīpī ʻana, ka sila ʻana a me ka hoʻoheheʻe centrifugal (CPU); hiki ke hana ʻia i loko o nā mea granular a me nā plastics maʻamau ma o ka injection, extrusion, calendering, blow molding a me nā kaʻina hana ʻē aʻe (CPU). Hiki ke ʻoki ʻia, wili ʻia, wili ʻia a me nā hana mechanical ʻē aʻe nā ʻāpana i hoʻoheheʻe ʻia a i ʻole i hoʻoheheʻe ʻia, i loko o kahi pae paʻakikī.

ʻO ka hā, ke kūpaʻa ʻaila, ke kūpaʻa ozone, ke kūpaʻa ʻelemakule, ke kūpaʻa radiation, ke kūpaʻa haʻahaʻa haʻahaʻa, ka hoʻoili leo maikaʻi, ka ikaika hoʻopili ikaika, ka biocompatibility maikaʻi loa a me ka hoʻohālikelike koko. ʻO kēia mau pono ke kumu e hoʻohana nui ʻia ai nā elastomers polyurethane i ka pūʻali koa, aerospace, acoustics, biology a me nā ʻoihana ʻē aʻe.