ʻO ka ʻūhā Polystyrene (EPS)

He polimer māmā ka EPS.Ma muli o kona kumu kūʻai haʻahaʻa, ʻo ia nō ka mea hoʻohana nui loa i hoʻohana ʻia i loko o ke kahua hōʻailona holoʻokoʻa, helu no ka aneane 60%.Hana ʻia ka polystyrene resin ma o ka hoʻohui ʻana i ka mea hoʻohāhā ma o ka mua-foaming, curing, hoʻoheheʻe ʻia, maloʻo, ʻoki a me nā kaʻina hana ʻē aʻe.ʻO ka hoʻolālā ʻana o ka lua pani o EPS e hoʻoholo i ka loaʻa ʻana o ka insulation thermal maikaʻi a me ka conductivity thermal haʻahaʻa.ʻO ka thermal conductivity o nā papa EPS o nā kikoʻī like ʻole ma waena o 0.024W / mK ~ 0.041W / mK He maikaʻi ka mālama ʻana i ka wela a me ka hopena mālama anu i ka logistics.

Eia naʻe, ma ke ʻano he mea thermoplastic, e heheʻe ka EPS i ka wā e wela ai a lilo i paʻa i ka wā i hoʻomaloʻo ʻia, a ʻo kona mahana deformation wela ma kahi o 70 °C, ʻo ia hoʻi, pono e hoʻohana ʻia nā incubators EPS i hoʻopili ʻia i loko o ka pahu pahu ma lalo o 70 °C.Inā kiʻekiʻe loa ka mahana, 70 ° C, e hoʻemi ʻia ka ikaika o ka pahu, a e hana ʻia nā mea ʻawaʻawa ma muli o ka volatilization o styrene.No laila, ʻaʻole hiki ke hoʻopau ʻia ka ʻōpala EPS, ʻaʻole hiki ke hoʻopau ʻia.

Eia kekahi, ʻaʻole maikaʻi loa ka paʻakikī o nā incubators EPS, maʻamau ka hana cushioning, a maʻalahi ke hōʻino ʻia i ka wā o ka lawe ʻana, no laila e hoʻohana nui ʻia no ka hoʻohana ʻana i hoʻokahi manawa, no ka wā pōkole, pōkole pōkole. ka halihali kaulahao, a me nā ʻoihana meaʻai e like me ka ʻiʻo a me ka moa.Nā pā a me nā mea hoʻopili no ka meaʻai wikiwiki.He pōkole ke ola lawelawe o kēia mau huahana, ma kahi o 50% o nā huahana Styrofoam he 2 mau makahiki wale nō ka lawelawe ʻana, a ʻo 97% o nā huahana Styrofoam he ola lawelawe ma lalo o 10 mau makahiki, no laila e hoʻopau ʻia ka EPS foam i ka makahiki. i ka makahiki, aka,EPS huʻaʻAʻole maʻalahi ka decompose a hana hou, no laila ʻo ia ke kumu nui o ka pollution keʻokeʻo o kēia manawa: ʻO ka EPS ma mua o 60% o nā ʻōpala keʻokeʻo i ka haumia moana!Ma ke ʻano he mea hoʻopili o EPS, hoʻohana ʻia ka hapa nui o nā mea hoʻohāhā HCFC i ke kaʻina hana huʻa, a ʻo ka hapa nui o nā huahana he ʻala ʻokoʻa.He 1,000 manawa ka nui o ka ozone depletion o HCFC ma mua o ka carbon dioxide.No laila, mai ka 2010s, ua hoʻoholo ka United Nations, United States, European Union, China, South Korea, Iapana a me nā ʻāina (hui) a me nā ʻāina e pili ana i nā kānāwai e pāpā ai i ka hoʻohana ʻana i nā plastics hoʻohana hoʻokahi, me Styrofoam. , a ua hoʻokumu ikaika nā kānaka i ka "Mahele Alanui Hoʻoponopono".