[Nā ʻano ʻeke ulana]

ʻO ka hana ʻana ma waho he polyethylene (PE), ʻo ka hana kūloko he polypropylene (PP), he ʻano resin thermoplastic i hana ʻia e ka ethylene polymerization. Ma ke ʻano ʻoihana, hoʻokomo pū ʻia nā copolymers o ethylene me nā liʻiliʻi o -olefin. ʻAʻohe ʻala o ka Polyethylene, ʻaʻohe ʻawaʻawa, manaʻo like me ka wax, loaʻa iā ia ke kūpaʻa haʻahaʻa maikaʻi loa (hiki i ka mahana hoʻohana haʻahaʻa loa ke -70 ~ -100 ℃), kūpaʻa kemika maikaʻi, hiki ke kū i ka hapa nui o ka waikawa a me ka alkali erosion (ʻaʻohe oxidation o ka waikawa), ʻaʻole hiki ke hoʻoheheʻe ʻia ka mahana o ka lumi i nā mea hoʻoheheʻe maʻamau, liʻiliʻi ka omo wai, hana insulation uila maikaʻi loa; Akā, he pilikino ka polyethylene i nā pilikia o ke kaiapuni (nā hopena kemika a me ka mechanical) a he kūpaʻa haʻahaʻa i ka ʻelemakule wela. ʻOkoʻa nā waiwai o ka polyethylene mai nā ʻano a i nā ʻano, ma muli nui o ke ʻano molekala a me ka density. Hiki ke loaʻa nā huahana me nā density like ʻole (0.91 ~ 0.96g/cm3) ma o ka hoʻohana ʻana i nā ʻano hana like ʻole. Hiki ke hana ʻia ka Polyethylene e ke ʻano hoʻoheheʻe thermoplastic maʻamau (e ʻike i ka hana plastic). Hoʻohana nui ʻia ia i ka hana ʻana i ka ʻoniʻoni, ka ipu, ka paipu, ka uea hoʻokahi, ka uea a me ke kaula, nā mea e pono ai i kēlā me kēia lā, a pēlā aku, a hiki ke hoʻohana ʻia e like me nā mea hoʻokaʻawale alapine kiʻekiʻe no ka TV, radar, a pēlā aku. Me ka hoʻomohala ʻana o ka ʻoihana petrochemical, ua hoʻomohala koke ʻia ka hana polyethylene, ʻo ka hopena o kahi 1/4 o ka huina o ka hana plastik. I ka makahiki 1983, ʻo ka nui o ka hiki ke hana o ka polyethylene he 24.65Mt, a ʻo ka nui o ka hiki ke hana ʻia o ka hale hana ma ke kūkulu ʻia he 3.16Mt.

Polypropylene (PP)

He resin thermoplastic i hoʻomākaukau ʻia e ka polymerization o propylene. ʻEkolu mau hoʻonohonoho o nā huahana isochronous, unregulated a me interchronous, a ʻo nā huahana isochronous nā ʻāpana nui o nā huahana ʻoihana. Loaʻa pū ka Polypropylene i nā copolymers o propylene a me kahi liʻiliʻi o ka ethylene. ʻO ka maʻamau, ʻaʻohe kala translucent, ʻaʻohe ʻala ʻaʻohe mea ʻawaʻawa. Ma muli o ke ʻano maʻemaʻe a me ke kristal kiʻekiʻe, no laila ʻo ka pae heheʻe a hiki i ka 167 ℃, ke kūpaʻa wela, hiki ke hoʻohana ʻia nā huahana disinfection mahu ʻo ia kona mau pono koʻikoʻi. Me ka density o 0.90g/cm3, ʻo ia ka plastic universal māmā loa. ʻOi aku ka maikaʻi o ke kūpaʻa ʻana i ka corrosion, ka ikaika tensile 30MPa, ka ikaika, ka paʻakikī a me ka transparency ma mua o ka polyethylene. ʻO ka hemahema, ʻo ia ka pale ʻana i ka hopena haʻahaʻa o ka mahana a me ka maʻalahi o ka ʻelemakule, hiki ke lanakila ma o ka hoʻololi ʻana a me ka hoʻohui ʻana i ka antioxidant.

ʻO ke kala o ka ʻeke ulana he keʻokeʻo a hina hina paha, ʻaʻohe mea ʻawahia a ʻono ʻole, ʻoi aku ka liʻiliʻi o ka hōʻeha i ke kino kanaka, ʻoiai ua hana ʻia e nā ʻano plastik kemika like ʻole, akā ʻoi aku ka ikaika o kona palekana kaiapuni, a ʻoi aku ka nui o ka ikaika hana hou;

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

Hana ʻia ka ʻeke ulana plastik i ka resin polypropylene ma ke ʻano he mea maka nui, kahi i hoʻopuka ʻia a hohola ʻia i loko o ka silika pālahalaha, a laila ulana ʻia a hana ʻeke.

Hoʻokumu ʻia ka ʻeke ulana plastik hui ʻia ma luna o ka lole ulana plastik, i hana ʻia e ke ʻano ʻōwili.

Hoʻohana ʻia kēia moʻo huahana no ka hoʻopili ʻana i ka pauka a i ʻole nā ​​​​mea paʻa granular a me nā mea palupalu. Ua māhele ʻia ka ʻeke ulana plastik i ʻelua i loko o hoʻokahi ʻeke a me ʻekolu i loko o hoʻokahi ʻeke e like me ke ʻano o ka mea nui.

Wahi a ke ʻano humuhumu, hiki ke puʻunaue ʻia i ka ʻeke humuhumu lalo, ka ʻeke humuhumu lalo, ka ʻeke hoʻokomo a me ka ʻeke humuhumu hoʻopaʻa.

Wahi a ka laulā kūpono o ka ʻeke, hiki ke puʻunaue ʻia i 350, 450, 500, 550, 600, 650 a me 700mm. E ʻae ʻia nā kikoʻī kūikawā e nā ʻaoʻao ʻelua.