Nā mea like ʻole, PE: polyethylene, PP: polypropylene
ʻO ka PP he polypropylene plastic hiki ke hoʻopaʻa ʻia, he ʻano thermoplastic.ʻO nā ʻeke PP he mau ʻeke plastik maoli.ʻO nā hiʻohiʻona o nā ʻeke PP he mea ʻawaʻawa ʻole a ʻono ʻole.ʻO ka ʻili o ka ʻeke PP he maʻemaʻe a maopopo, a hoʻohana nui ʻia ia i ka hoʻopili ʻana i nā mea hoʻonaninani, nā meaʻai, nā mea pāʻani, nā lole, nā mea kākau, nā uila, nā huahana lako a me nā ʻoihana ʻē aʻe.ʻO ka waihoʻoluʻu o ka ʻeke PP he aniani, maikaʻi maikaʻi, paʻakikī maikaʻi, ʻoi aku ka ikaika, ʻaʻole hiki ke ʻoki ʻia.ʻO ke kumukūʻai hana o nā ʻeke PP he mea liʻiliʻi loa, a ʻo nā hiʻohiʻona: maʻalahi e puhi, hoʻoheheʻe ʻia ka lapalapa a hoʻoheheʻe ʻia, melemele ka luna a he uliuli ka lalo, ma hope o ka haʻalele ʻana i ke ahi, ua emi ka uahi a hoʻomau ke ahi.
ʻO PE ka pōkole o ka polyethylene, ʻo ia ke ʻano o ka resin thermoplastic i hana ʻia e ka polymerization o ka ethylene.ʻO ka polyethylene he mea ʻole, ʻaʻohe mea ʻawaʻawa, manaʻo e like me ka wax, maikaʻi loa ke kūpaʻa haʻahaʻa haʻahaʻa (hiki i ka wela haʻahaʻa ke hiki i -70～-100 ℃), he kūpaʻa kemika maikaʻi, a hiki ke kū i ka hapa nui o nā waikawa a me nā alkalis (ʻaʻole kū i nā waiwai oxidizing) Acid), hiki ʻole ke hoʻoheheʻe ʻia i loko o nā mea hoʻoheheʻe maʻamau i ka lumi wela, ka haʻahaʻa haʻahaʻa o ka wai, nā waiwai insulation uila maikaʻi loa;akā, paʻakikī loa ka polyethylene i ke koʻikoʻi o ke kaiapuni (nā hopena kemika a me nā hopena mechanical), a ʻaʻole maikaʻi ke kūpaʻa ʻana o ka wela.ʻOkoʻa nā waiwai o ka polyethylene mai kēlā me kēia ʻano, ma muli o ke ʻano molekala a me ka nui.Hiki ke hoʻohana ʻia nā ʻano hana like ʻole no ka loaʻa ʻana o nā huahana me nā ʻano like ʻole (0.91～0.96g/cm3).Eia kekahi, hiki ke kapa ʻia ka ʻili plastik o ka mea PE he ʻeke PE.E hoʻomanaʻo, pono e hana ʻia ka ʻōpala i hoʻopili pololei ʻia me ka meaʻai me ka mea PE, ʻoi aku ka palekana no ke kino o ke kanaka.
Ka manawa hoʻouna: Iune-17-2021