ʻO ka kaulana o nāʻeke ulana

Nui nā mea kūʻai ma o kā mākou pūnaewele i ke kelepona ʻōlelo aʻo e pili ana i ka kaulana o nā ʻano ʻeke ulana, a laila i kēia lā ʻo DongLai ulana ʻeke Xiaobian e wehewehe i ka kaulana o nā ʻano ʻeke ulana.

Nā ʻano ʻeke i ulana ʻia

Kapa ʻia nā ʻeke i ulana ʻia he ʻeke ʻili nahesa. He ʻano plastic, hoʻohana nui ʻia no ka ʻeke. ʻO ka mea maʻamau ka polyethylene, polypropylene a me nā mea palaki kemika ʻē aʻe. Eia kahi hoʻolauna pōkole i ke ʻano o ka ʻeke ulana a me ka hoʻohana ʻana.

ʻO ka polyethylene ka mea nui o ka hana haole, ʻo ka polypropylene ka huahana nui o ka home. He resin thermoplastic i hana ʻia e ka polymerization o ka ethylene. Ma ka ʻoihana, loaʻa pū kekahi i nā copolymers o ka ethylene me kahi liʻiliʻi o ka α-olefin. ʻO ka polyethylene he meaʻalaʻole,ʻaʻohe meaʻawaʻawa, waxy, he haʻahaʻa haʻahaʻa haʻahaʻa maikaʻi loa (ka liʻiliʻi o ka mahana hana a hiki i -70 ~ -100 ℃), ke kūpaʻa kemika maikaʻi, ka nui o ka acid and alkali corrosion resistance (acid resistance, oxidation), insoluble in general solvents ma ke ana wela, haʻahaʻa wai absorption, maikaʻi uila insulation hana; Eia nō naʻe, paʻakikī loa ka polyethylene i nā koʻikoʻi o ke kaiapuni (nā hopena kemika a me nā hopena mechanical) a me ka maikaʻi ʻole o ka pale ʻana i ka ʻelemakule wela. ʻOkoʻa nā waiwai o ka polyethylene mai nā ʻano like ʻole, ma muli o ke ʻano o ka molekala a me ka nui. Hiki i nā ʻano hana hana like ʻole ke hāʻawi i nā density like ʻole (0.91-0.96g/cm3). Hiki ke hana ʻia ka polyethylene e like me ka hoʻoheheʻe ʻia ʻana o nā plastic thermoplastic maʻamau (e ʻike i ka hana ʻana i ka Plastic). Hoʻohana nui ʻia i ka hana ʻana i nā kiʻiʻoniʻoni, nā ipu, nā pipeline, ka uwea hoʻokahi, ka uea a me ke kaula, nā mea e pono ai i kēlā me kēia lā, a me nā mea ʻē aʻe. I ka makahiki 1983, he 24.65 metric tons ka nui o ka hana ana o ka honua i ka polyethylene, a he 3.16 metric tons ka mea kanu e kukulu ana.

Polypropylene (PP)

He resin thermoplastic i hana ʻia e ka polymerization o propylene. ʻEkolu ʻano o ka hoʻonohonoho ʻana, ʻo ia hoʻi, isotopic piha, atactic a me indirect. Hoʻokumu nui ʻia nā huahana ʻoihana i nā hale isotopic. Hoʻokomo pū ka Polypropylene i kahi copolymer o propylene a me kahi liʻiliʻi o ka ethylene. ʻO ka mea maʻamau he paʻa translucent, kala ʻole, ʻaʻala a ʻaʻohe mea ʻawaʻawa. Ma muli o kāna mau lula, ka crystallinity kiʻekiʻe, ka helu hoʻoheheʻe a hiki i ka 167 ℃, ke kūpaʻa wela. Me ka mānoanoa o 0.90g/cm3, ʻo ia ka ʻilika māmā loa. ʻOi aku ka maikaʻi o ka pale ʻana i ka corrosion, ka ikaika tensile 30MPa, ka ikaika, rigidity a me ka transparency ma mua o ka polyethylene. ʻO ka hemahema ʻo ka haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa, maʻalahi i ka ʻelemakule, akā hiki ke hoʻololi a hoʻohui ʻia i ka antioxidant e lanakila ai.

ʻO ke kala o ka ʻeke i ulana ʻia he keʻokeʻo a keʻokeʻo maʻamau, ʻaʻohe mea ʻawaʻawa a ʻono ʻole, ʻoi aku ka liʻiliʻi o ka pōʻino i ke kino kanaka. ʻOiai i hana ʻia me nā ʻano plastik kemika, akā ikaika ka palekana o ke kaiapuni, ka ikaika hana hou;

Hoʻohana nui ʻia ka ʻeke ulana, hoʻohana nui ʻia no ka hoʻopili ʻana i nā waiwai like ʻole, a hoʻohana nui ʻia i ka ʻoihana;

ʻO ka ʻeke i ulana ʻia me ka resin polypropylene e like me ka mea nui, extrusion a kikoo i loko o ke kaula pālahalaha, a laila ulana ʻia i loko o kahi ʻeke.

ʻeke ʻeke i ulana ʻia me ka lole i ulana ʻia e like me ke kumu, ma o ke kahe kahe.

Hoʻohana ʻia no ka hoʻopili ʻana i ka pauka a i ʻole nā ​​​​mea paʻa paʻa a me nā ʻatikala maʻalahi. Hoʻokaʻawale ʻia ka ʻeke i ulana ʻia i ʻelua i loko o ka ʻeke hoʻokahi a ʻekolu i loko o ka ʻeke hoʻokahi e like me ke ʻano kumu kumu.

E like me ke ʻano o ka humuhumu ʻana, hiki ke hoʻokaʻawale ʻia i ka ʻeke ʻeke lalo, ʻeke ʻeke ʻaoʻao lalo, hoʻokomo ʻeke a me ka ʻeke humuhumu i uhi ʻia.

Ma muli o ka laulā kūpono o ka ʻeke, hiki ke māhele ʻia i 450, 500, 550, 600, 650 a me 700 mm. E ʻae ʻia nā ʻōlelo kikoʻī e nā ʻaoʻao ʻelua.

Ma luna aʻe ka kaulana o nā ʻeke liʻiliʻi no nā ʻano āpau o ka hoʻopau ʻana i nā ʻeke ulana e pili ana i ke kūkākūkā ʻana, ma o ka kaʻana like ʻana o ka ʻike, i ka popularization o nā ʻano ʻeke ulana i kekahi cognitive, inā makemake ʻoe e hele hohonu i loko o ka ʻeke o ka ʻike mākeke, hiki ke hoʻokaʻaʻike i ka mea kūʻai aku i kā mākou hui, a i ka hikina a me ka ʻeke ulana ma kahi o ka hoʻokolokolo ʻana, kamaʻilio ʻia ma kēia pepa.