ʻO ka polyethylene ultra-high-molecular-weight (UHMWPE, UHMW) kahi ʻāpana o ka polyethylene thermoplastic.
ʻIke pū ʻia ʻo high-modulus polyethylene, (HMPE), he mau kaulahao lōʻihi loa, me ka nui o ka molekala ma waena o 3.5 a me 7.5 miliona amu. ʻO ke kaulahao lōʻihi e hoʻoili pono i ka ukana i ka iwi kuamoʻo polymer ma o ka hoʻoikaika ʻana i nā pilina intermolecular.Loaʻa kēia i kahi mea paʻakikī loa, me ka ikaika hopena kiʻekiʻe loa o kekahi thermoplastic i hana ʻia i kēia manawa.
ʻAʻole ʻono, ʻono ʻole, a ʻaʻole ʻona ʻo UHMWPE.Hoʻokomo ia i nā hiʻohiʻona a pau o ka polyethylene kiʻekiʻe (HDPE) me nā ʻano hoʻohui o ke kū kūʻē i nā waikawa concentrated a me nā alkalis, a me nā mea hoʻoheheʻe organik he nui.He kūpaʻa loa ia i nā kemika corrosive koe wale nō nā waikawa oxidizing;he haʻahaʻa haʻahaʻa loa ka haʻahaʻa haʻahaʻa a me ka haʻahaʻa haʻahaʻa loa o ka friction;he lubricating pono'ī (e nānā i ka lubrication palena);a ua kūpaʻa loa i ka abrasion, ma kekahi mau ʻano he 15 manawa ʻoi aku ka pale ʻana i ka abrasion ma mua o ke kila kalapona.ʻOi aku ka haʻahaʻa o kāna coefficient o ka friction ma mua o ka nylon a me ka acetal a ua hoʻohālikelike ʻia me ka polytetrafluoroethylene (PTFE, polymer), akā ʻoi aku ka maikaʻi o ka UHMWPE i ka pale ʻana i ka abrasion ma mua o ka PTFE.
Ka manawa hoʻouna: Jun-30-2017