maʻamau,polystyrenehe polymer aromatic synthetic i hana ʻia mai ka monomer styrene, i loaʻa mai benzene a me ethylene, nā huahana ʻaila ʻelua.Hiki i ka polystyrene ke paʻa a i ʻole ka pua.PolystyreneʻO ka thermoplastic ʻaʻohe waihoʻoluʻu, ka mea maʻamau i hoʻohana ʻia no ka hana ʻana i ka papa puaa a i ʻole ka hoʻokaʻawale ʻana i ka pahu a me ke ʻano o ka hoʻopiha piha ʻana me nā pahu liʻiliʻi o ka polystyrene.Puhu polystyrenehe 95-98% ea.ʻO ka polystyrene foam he mau mea hoʻokalakupua wela maikaʻi a no laila ua hoʻohana pinepine ʻia e like me ke kūkulu ʻana i nā mea hoʻokalakupua, e like me ka insulating concrete forms a me nā ʻōnaehana kūkulu hale papa insulated.Hoʻonui ʻia (EPS)apolystyrene extruded (XPS)Hana ʻia lāua ʻelua mai ka polystyrene, akā ua haku ʻia ʻo EPS me nā peʻa plastik liʻiliʻi i hui pū ʻia a hoʻomaka ka XPS ma ke ʻano he mea hoʻoheheʻe ʻia i kaomi ʻia mai kahi ʻano i loko o nā ʻāpana.Hoʻohana pinepine ʻia ʻo XPS ma ke ʻano he insulation board.
Polystyrene hoʻonui (EPS)he ʻōhuʻa paʻa paʻa ʻia.ʻO nā noi kūkulu hale a me ke kūkulu hale no kahi o ʻelua hapakolu o ke koi no ka polystyrene hoʻonui.Hoʻohana ʻia ia no ka hoʻokaʻawale ʻana i nā paia (cavity), nā hale a me nā papahele siki.Ma muli o kāna mau waiwai ʻenehana e like me ke kaumaha haʻahaʻa, rigidity, a me ka formability,polystyrene hoʻonuihiki ke hoʻohana ʻia i ka nui o nā noi, no ka laʻana nā pā, nā pā a me nā pahu iʻa.
ʻOiai ʻo ka polystyrene i hoʻonui ʻia a i hoʻokuʻu ʻia he hale paʻa paʻa, ua paʻa lākou e nā molekole wai a ʻaʻole hiki ke manaʻo ʻia he pale mahu.I loko o ka polystyrene i ho'onui'ia, aia nā āpau interstitial ma waena o nā pellets pani pani i ho'onui'ia e hana i kahi pūnaewele hāmama o nā kahawai ma waena o nā pellets i ho'opa'a'ia.Inā maloʻo ka wai i ka hau, hoʻonui ia a hiki ke hoʻokaʻawale i nā pellets polystyrene mai ka huʻa.
Ka manawa hoʻouna: ʻAukake-17-2022