He plastic polyethylene?
ʻAe, ʻo ka polyethylene kekahi ʻano plastic. He polymer ia i hoʻohana nui ʻia i nā ʻoihana like ʻole ma muli o kāna mau waiwai kūʻokoʻa a me ka versatility. ʻO ka polyethylene he mea māmā, lōʻihi, a maʻalahi hiki ke hoʻoheheʻe ʻia i nā ʻano like ʻole.
Hana ʻia ka polyethylene mai ka polymerization o nā monomers ethylene. ʻO ka Ethylene kahi kinoea hydrocarbon i loaʻa mai ke kinoea maoli a i ʻole ka ʻaila. Ma o ke kaʻina hana i kapa ʻia he polymerization, ua hoʻopaʻa ʻia nā molekele ethylene e hana i nā kaulahao lōʻihi o ka polyethylene.
Aia nā ʻano polyethylene like ʻole, me ka polyethylene kiʻekiʻe kiʻekiʻe (HDPE), polyethylene haʻahaʻa haʻahaʻa (LDPE), a me ka polyethylene haʻahaʻa haʻahaʻa laina (LLDPE). ʻOkoʻa kēia mau ʻano i ko lākou ʻano molekala a me nā waiwai, no laila kūpono lākou no nā noi like ʻole.
ʻO HDPE kahi ʻano paʻa a ikaika o ka plastic polyethylene. Hoʻohana maʻamau ia i ka hana ʻana i nā ʻōmole, nā paipu, a me nā ipu. He kūpaʻa kemika maikaʻi loa ʻo HDPE a kū i ka hopena a me ka radiation UV, kūpono ia no nā noi waho.
ʻO LDPE, ma ka ʻaoʻao ʻē aʻe, he ʻano polyethylene ʻoi aku ka maʻalahi a me ka liʻiliʻi. Hoʻohana maʻamau ia i ka hana ʻana i nā ʻeke plastik, nā kiʻiʻoniʻoni, a me nā uhi. Loaʻa i ka LDPE ke aniani maikaʻi, ka pale ʻana i ka wai, a me nā waiwai insulation uila.
ʻO LLDPE kahi hui o LDPE a me linear polyethylene. Hoʻohui ia i ka maʻalahi o LDPE me ka ikaika a me ka paʻakikī o HDPE. Hoʻohana mau ʻia ʻo LLDPE i ka hana ʻana i nā kiʻi ʻoniʻoni, nā kiʻiʻoniʻoni mahiʻai, a me nā geomembranes.
He nui nā pono o ka polyethylene e kōkua i kona hoʻohana ākea. He māmā ia, e hoʻemi i ka hoʻohana ʻana i ka ikehu. He kūpaʻa nō hoʻi ia i nā kemika, ka makū, a me ka radiation UV, kūpono ia no nā noi waho. Hoʻohui ʻia, hiki ke hana hou ʻia ka polyethylene, e hāʻawi ana i nā hana hoʻomau.
I ka hopena, ʻo ka polyethylene kekahi ʻano o ka plastic. He mea maʻalahi ia i hoʻohana nui ʻia i nā ʻoihana like ʻole ma muli o kāna mau ʻano ʻokoʻa. Inā he HDPE, LDPE, a i ʻole LLDPE, hāʻawi ka polyethylene i nā ʻano pono like ʻole, me ka lōʻihi, ka maʻalahi, a me ke kūpaʻa kemika. ʻO kona hoʻohana ākea ʻana i ka ʻeke, kūkulu, a me nā ʻoihana automotive he hōʻike i kona koʻikoʻi a me ka waiwai.
