E kālailai i nā pono a me nā hemahema o nā mīkini hao polyurethane ʻoihana

ʻO ka mea hoʻoheheʻe polyurethane ʻo ia ke ʻano mea hoʻoheheʻe me ka mea polyurethane, i hoʻopaʻa ʻia i ka hao hao, ke kila kila a i ʻole ke kila kila, he mālie, lohi ke kaumaha a hoʻokele waiwai, a kūpono hoʻi no ka hapa nui o nā ʻano hana.
ʻO ka maʻamau, ʻo ka nui o nā mīkini wili ʻoihana ma waena o 4 ~ 8 ʻīniha (100-200mm), me nā huila polyurethane ka mea maikaʻi loa. Loaʻa i nā huila Polyurethane ke kūpaʻa ʻana i ka abrasion, kahi ākea o ka hana hoʻololi, nā ʻano hana like ʻole, ka hoʻohana ākea, a me ke kūpaʻa maikaʻi i ka ʻaila, ozone, ka ʻelemakule, ka radiation, ka mahana haʻahaʻa, a me nā mea ʻē aʻe, ka permeability kani maikaʻi, ka ikaika hoʻopili ikaika, ka biocompatibility maikaʻi loa a me ke kūlike o ke koko.

ʻO nā hiʻohiʻona nui o nā mīkini polyurethane:
1. Nui ka laulā o ka hana i hiki ke hoʻololi ʻia. Ma o ke koho ʻana i nā mea maka a me ka hoʻoponopono ʻana i ke ʻano hana, hiki ke loli i loko o kahi laulā o nā loli i nā ʻano hana kino a me nā mīkini, e hoʻokō i nā koi kūikawā o ka mea hoʻohana ma ka hana o nā huahana. No ka laʻana, hiki ke hana ʻia nā elastomers polyurethane i nā wili palupalu paʻi palupalu a me nā wili kila paʻakikī e hoʻokō i nā pono o nā mea hoʻohana like ʻole.
2. ʻOi aku ka maikaʻi o ke kūpaʻa ʻana i ka ʻōpala. I ke alo o ka wai, ka ʻaila a me nā kūlana hana ʻē aʻe o ka mea hoʻomaʻū, ʻoi aku ka nui o ke kūpaʻa o nā mīkini wili polyurethane ma mua o nā mea laholio maʻamau.

3. Nā ʻano hana like ʻole a me ka hoʻohana ākea. Hiki ke hoʻoheheʻe ʻia ka polyurethane elastomer ma o ka plasticizing, mixing a me ke kaʻina hana vulcanizing (e pili ana iā MPU); hiki ke hana ʻia i loko o ka wai rubber, casting molding a spraying paha, potting a me centrifugal molding (e pili ana iā CPU); hiki ke hana ʻia i loko o ka mea granular a hoʻoheheʻe ʻia e ka injection, extrusion, calendering, blow molding a me nā kaʻina hana ʻē aʻe (e pili ana iā CPU).
4. Kūpaʻa i ka ʻaila, ka ozone, ka ʻelemakule, ka radiation, ka mahana haʻahaʻa, ka hoʻoili leo maikaʻi, ka ikaika pipili ikaika, ka biocompatibility maikaʻi loa a me ka hoʻohālikelike koko.

Eia nō naʻe, aia kekahi mau hemahema o nā elastomers polyurethane, e like me ke kiʻekiʻe o ka wela endogenous, ke kūpaʻa kiʻekiʻe o ka mahana ma ke ʻano laulā, ʻoi aku ka maikaʻi ʻole o ke kūpaʻa ʻana i ka makū a me ka wela, ʻaʻole kūpaʻa i nā mea hoʻoheheʻe polar ikaika a me nā mea waikawa a me nā mea alkali ikaika.