Nā mea plastik maʻamau:
ʻO ka plastic i hoʻohana pinepine ʻia ʻaʻole ia he ʻāpana hoʻokahi, ua hana ʻia mai nā mea he nui.I waena o lākou, ʻo nā polymers molecular kiʻekiʻe (a i ʻole synthetic resins) nā mea nui o nā plastics.Eia kekahi, no ka hoʻomaikaʻi ʻana i ka hana o nā plastics, pono e hoʻohui ʻia nā mea kōkua like ʻole, e like me nā mea hoʻopihapiha, plasticizers, lubricants, a me stabilizers i nā pūhui molekala kiʻekiʻe., Nā kala, nā mea antistatic, a me nā mea'ē aʻe, hiki ke lilo i plastics me ka hana maikaʻi.
ʻO nā mea hoʻohui plastik, i ʻike ʻia hoʻi he plastic additives, he mau pūhui pono e hoʻohui ʻia e hoʻomaikaʻi i ka hana ʻana o ka polymer (synthetic resin) a i ʻole e hoʻomaikaʻi i ka hana o ka resin ponoʻī ke hana ʻia ka polymer (synthetic resin).No ka laʻana, i mea e hōʻemi ai i ka mahana hoʻoheheʻe o ka polyvinyl chloride resin, ua hoʻohui ʻia ka plasticizer e hoʻomāmā i ka huahana;ʻO kekahi laʻana, ʻo ia ka hoʻohui ʻana i kahi mea hoʻohāhā no ka hoʻomākaukau ʻana i ka ʻūhā māmā, kūʻē i ka haʻalulu, ka wela, a me ke kani;Kokoke loa ka mahana decomposition i ka mahana hoʻoheheʻe ʻana, a ʻaʻole hiki ke hoʻokō ʻia me ka ʻole o ka hoʻohui ʻana i nā stabilizers wela.No laila, noho nā mea hoʻohui plastik i kahi kūlana koʻikoʻi i ka hoʻoili ʻana i ka plastic molding.
ʻO nā plastics nā pūhui polymer (macromolecules), i ʻike mau ʻia he plastics a resins, i polymerized e nā monomers ma ke ʻano he kumu kumu ma o ka hoʻohui polymerization a i ʻole nā hopena polycondensation.Hiki ke hoʻololi manuahi ka haku mele ʻana a me ke ʻano.Hoʻokumu ʻia ia me nā resins synthetic a me nā mea hoʻopihapiha.Plasticizer, stabilizer, lubricant, pigment a me nā mea hoʻohui ʻē aʻe.
Ka manawa hoʻouna: Nov-10-2021
