No nā polymer polyurethane elastomers, ʻo ia hoʻi, ua haku ʻia nā macromolecules polyurethane me "nā ʻāpana palupalu" a me "nā ʻāpana paʻakikī" a hana i kahi ʻano hoʻokaʻawale micro phase.Hoʻopuehu ʻia nā ʻāpana paʻakikī (i loaʻa mai nā isocyanates a me nā mea hoʻonui kaulahao) i ka ʻāpana ʻāpana palupalu (i loaʻa mai nā oligomer polyols) a pāʻani i ke ʻano o nā wahi crosslinking kino.No laila, ke hoʻohālikelike ʻia me nā ʻāpana synthetic ʻē aʻe (elastomers), ʻoi aku ka ikaika o ka polyurethane elastomers a me ke kūpaʻa ʻana, hiki ke mālama ʻia ka elongation kiʻekiʻe ke kiʻekiʻe ka paʻakikī.
ʻO nā mea polyurethane elastic, i kapa ʻia ʻo "case" ma nā ʻāina ʻē, ka nui o nā huahana polyurethane elastomer kuʻuna, polyurethane plastic runway a me nā mea pavement ʻē aʻe, polyurethane coatings waterproof, adhesives, sealants, potting adhesives, etc., e helu ana ma kahi o 40% o ka ka nui o nā huahana polyurethane.ʻO ka hapa nui o nā huahana i hoʻōla ʻia o nā mea hihia (wai-wai a me nā mea hoʻoheheʻe ʻia e wehe i ka wai a me nā mea hoʻoheheʻe) he mau mea polyurethane elastic ʻole.ʻO ka resin ʻili synthetic PU, kekahi mau uhi a me nā mea hoʻopili he mea hoʻoheheʻe a i ʻole nā huahana wai, hiki ke manaʻo ʻia he mau mea polyurethane elastomer ma ke ʻano ākea.Ma ka manaʻo haiki, ʻo ka polyurethane elastomer e pili ana i ka hoʻolei ʻana i ka polyurethane elastomer (CPU), thermoplastic polyurethane elastomer (TPU) a me ka polyurethane elastomer (MPU) i hui pū ʻia, ʻo ia ka 10% a i ʻole ka liʻiliʻi iki o ka nui o ka polyurethane.ʻO CPU a me TPU ka polyurethane elastomers nui, a aia ko lākou ʻokoʻa i nā mea e like me ke kaʻina hana a me ka hoʻonui kaulahao.ʻO kēia ʻano polyurethane elastomer maʻamau, ʻike ʻia hoʻi ʻo "polyurethane rubber", no kahi ʻano o ka lāʻau synthetic kūikawā.ʻO ka polyurethane elastomer hana kiʻekiʻe ka mea me ka pale lole maikaʻi loa ma waena o nā mea polymer synthetic.Ua ʻike ʻia ʻo ia ʻo "ke aliʻi o ke kūpaʻa lole".Hoʻohana nui ʻia ia i nā kula he nui, a ke hoʻonui nei nā noi hou.
Hiki ke hoʻohana ʻia nā elastomers polyurethane e hoʻololi i nā metala, plastics a me nā ʻōpala maʻamau i kekahi mau māla.
Ke hoʻohālikelike ʻia me nā mea metala, loaʻa ka polyurethane elastomer i nā mea maikaʻi o ke kaumaha māmā, haʻahaʻa haʻahaʻa, ke kū ʻana o ka pohō, ke kumukūʻai haʻahaʻa haʻahaʻa a me ke kūpaʻa ʻana o ka waika.Ke hoʻohālikelike ʻia me nā plastics, loaʻa iā ia nā pōmaikaʻi o ka paʻakikī kiʻekiʻe a me ke kūpaʻa ʻaʻahu kiʻekiʻe.Ke hoʻohālikelike ʻia me ka pāpaʻi maʻamau, ʻoi aku ka maikaʻi o ka polyurethane elastomer i ke kūpaʻa ʻana, ka ʻoki ʻana i ke kūʻē ʻana, ke kūʻē i ka waimaka, ka hiki ke hoʻokiʻekiʻe kiʻekiʻe, ka pale ozone, ka hana maʻalahi, ka ipuhao a me ka ninini ʻana, a me ka laulā ākea.
ʻO ka polyurethane elastomer kahi ʻano nui o ka polyurethane.I kēia manawa, ʻoi aku ka nui o ka hoʻohana ʻana ma kahi o 10% o ka pau ʻana o ka polyurethane.Hoʻohana ʻia ka polyurethane elastomer no ka hana ʻana i nā ʻano huila ʻōpala āpau, nā kāʻei conveyor, nā wai-kūpaʻa a me nā puʻupuʻu paʻa paʻa paʻa, nā kaula hoʻopaʻa a me nā apo, nā kaula kaula a me nā kiʻiʻoniʻoni like ʻole.Hoʻohana nuiʻia nā huahana i ka hao a me ke kila, ka hana pepa, ka mining, ka mīkini, ka paʻi a me nāʻoihana'ē aʻe.Hiki ke hoʻololi ʻia ka polyurethane elastomer e nā polymers ʻē aʻe, nā fibers, nā mea hoʻopiha pauka, a me nā mea ʻē aʻe e hōʻemi i ke kumukūʻai a hoʻomaikaʻi i ka hana.
Ka manawa hoʻouna: Mei-05-2022