He nui nā mea kūʻai aku ma o kā mākou pūnaewele e kelepona e nīnau i ke ʻano o ka ʻeke ulana a me ka laulā o ka hoʻohana ʻana, i kēia lā e wehewehe i ke ʻano o ka ʻeke ulana a me ka laulā o ka hoʻohana ʻana i ka dongle ʻeke ulana xiaobian.
ʻIke ʻia nā ʻeke i ulana ʻia he ʻeke ʻili nahesa. He palakika ia, i hoʻohana nui ʻia no ka hoʻopili ʻana. ʻO kāna mau mea maka he polyethylene, polypropylene a me nā mea maka palakika kemika ʻē aʻe. Eia ka hoʻolauna i nā ʻano a me nā noi o nā ʻeke i ulana ʻia.
ʻano
ʻO ka polyethylene (PE) ka mea nui no ka hana ʻana ma waho, ʻo ia ka polypropylene (PP), kahi resin thermoplastic i hoʻomākaukau ʻia e ka ethylene polymerization. Ma ka ʻoihana, ua hoʻokomo pū ʻia nā copolymers o ka ethylene me nā liʻiliʻi o ka -olefin. ʻAʻohe ʻala, ʻaʻohe ʻawaʻawa, polyethylene waxy, me ke kūpaʻa haʻahaʻa maikaʻi loa (ka mahana hana haʻahaʻa a hiki i -70 ~ 100 ℃), kūpaʻa kemika maikaʻi, ke kūpaʻa i ka hapa nui o ka waikawa a me ka alkali corrosion (oxidation resistant acid), ʻaʻole hiki ke hoʻoheheʻe ʻia i nā mea hoʻoheheʻe maʻamau i ka mahana o ka lumi, ka haʻahaʻa o ka omo wai, ka hana insulation uila maikaʻi loa; He polyethylene (kemika a me ka insulation uila) no nā pilikia o ke kaiapuni; ʻO ka hopena mechanical) he mea maʻalahi loa, kūʻē maikaʻi ʻole i ka ʻelemakule wela. ʻOkoʻa nā waiwai o ka polyethylene mai nā ʻano a i nā ʻano, ma muli o kona ʻano molekala a me ka density. Hiki ke loaʻa nā huahana me nā densities like ʻole (0.91 a 0.96 g/cm3) ma o nā ʻano hana like ʻole. Hiki ke hana ʻia ka Polyethylene e kahi hana hana thermoplastic maʻamau (e nānā i ka hana Plastic). Hoʻohana nui ʻia i ka hana ʻana i nā kiʻiʻoniʻoni, nā ipu, nā paipu, ka uea hoʻokahi, ka uea a me ke kaula, nā mea e pono ai i kēlā me kēia lā, a pēlā aku. Hiki ke hoʻohana ʻia ma ke ʻano he mea hoʻokaʻawale alapine kiʻekiʻe no ka TV a me ka radar. Me ka hoʻomohala ʻana o ka ʻoihana petrochemical, ua ulu wikiwiki ka hana polyethylene, e helu ana i kahi hapaha o ka huina o ka hana plastik. I ka makahiki 1983, ʻo ka nui o ka hana honua o ka polyethylene he 24.65 Mt, a ʻo ka nui o ka hale hana e kūkulu ʻia ana he 3.16 Mt.
polypropylene
ʻO ka resin Thermoplastic i hoʻomākaukau ʻia e ka polymerization propylene. ʻEkolu mau hoʻonohonoho o ka isomorphism holoʻokoʻa, random a me interisomorphism. ʻO nā ʻāpana nui o nā huahana ʻoihana he mau mea homogenous. Loaʻa pū kekahi i ka Polypropylene nā copolymers o propylene a me kahi liʻiliʻi o ka ethylene. He mea paʻa ʻole ia he translucent colorless, ʻono ʻole a ʻaʻohe ʻawaʻawa. Ma muli o kona ʻano maʻamau a me ke kiʻekiʻe o ka crystallinity, ʻo ke kiko heheʻe a hiki i ka 167 ℃. He kūpaʻa ia i ka wela a hiki ke hoʻomaʻemaʻe ʻia ka huahana e ka mahu. ʻO ka density o 0.90 g/cm3 ka plastic universal māmā loa. ʻOi aku ka maikaʻi o ke kūpaʻa ʻana i ka corrosion, ka ikaika tensile 30 MPa, ka ikaika, ka paʻakikī a me ka transparency ma mua o ka polyethylene. ʻO nā hemahema he haʻahaʻa ka pale ʻana i ka hopena a me ka maʻalahi o ka ʻelemakule ʻana i ka mahana haʻahaʻa, hiki ke lanakila ʻia e ka hoʻololi ʻana a me ka hoʻohui ʻana i nā antioxidants.
ʻO ke kala o nā ʻeke ulana he keʻokeʻo a keʻokeʻo paha, ʻaʻohe mea ʻawahia a ʻono ʻole, ʻaʻole ia e hōʻino nui i ke kino o ke kanaka. ʻOiai ua hana ʻia lākou mai nā ʻano plastik kemika like ʻole, he launa pū lākou me ke kaiapuni a hiki ke hana hou ʻia.
Hoʻohana nui ʻia nā ʻeke ulana, ʻo ia hoʻi no ka hoʻopili ʻana i nā mea like ʻole, a hoʻohana nui ʻia i ka ʻoihana.
Hana ʻia ka ʻeke ulana palaki i ka resin polypropylene, hoʻopuka ʻia a kīkoʻo ʻia i loko o ka silika pālahalaha, a laila ulana ʻia i loko o nā ʻeke.
Hana ʻia nā ʻeke ulana palaki composite mai ka lole palaki ma o ke kahawai.
Hoʻohana ʻia 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 lihi, ka ʻeke hoʻokomo a me ka ʻeke humuhumu hoʻopaʻa.
Ma muli o ka laulā kūpono o ka ʻeke, hiki ke puʻunaue ʻia i 450, 500, 550, 600, 650 a me 700 mm. Ua ʻaelike ʻia nā kikoʻī kūikawā e ka mea hoʻolako a me ka mea kūʻai aku.
Ka laulā o ka noi
1. Nā ʻeke hoʻopili no nā huahana ʻoihana a me nā huahana mahiʻai
Me ka hoʻomohala ʻana a me ka hoʻohana ʻana i nā ʻeke ipu palupalu, hoʻohana nui ʻia nā ʻeke ipu ulana plastik ma ke kai, ka ʻoihana halihali a me ka hoʻopili ʻana a me nā huahana mahiʻai. Ua hoʻohana nui ʻia nā ʻeke ulana plastik i ka hoʻopili ʻana i nā huahana mahiʻai. Ua hoʻohana nui ʻia nā ʻeke ulana plastik i nā huahana wai. Hoʻopili ʻana, hoʻopili ʻana i ka hānai manu, nā mea uhi mahiʻai, ka malu mahiʻai, ka pale makani, ka pale huahekili a me nā mea ʻē aʻe. Nā huahana maʻamau: ʻeke ulana hānai, ʻeke ulana kemika, ʻeke ulana pauka putty, ʻeke ulana urea, ʻeke ʻupena mea kanu, ʻeke ʻupena huaʻai, a pēlā aku.
2. Ka hoʻopili ʻana i ka meaʻai
Hoʻohana mālie ʻia nā ʻeke ulana no ka laiki, ka palaoa, a me nā ʻeke meaʻai ʻē aʻe. ʻO nā ʻeke ulana maʻamau: nā ʻeke ulana laiki, nā ʻeke ulana palaoa, nā ʻeke ulana kulina, a me nā ʻeke ulana ʻē aʻe.
3. Ka halihali mākaʻikaʻi
Hoʻohana ʻia nā halelewa manawa pōkole, nā umbrellas, nā ʻeke huakaʻi a me nā ʻeke i ka ʻoihana mākaʻikaʻi no nā lole ulana plastik. Hoʻohana nui ʻia nā halelewa o nā ʻano like ʻole ma ke ʻano he mau hale malumalu.
Hoʻohana ʻia nā halelewa manawa pōkole, nā umbrellas, nā ʻeke huakaʻi a me nā ʻeke i ka ʻoihana mākaʻikaʻi no nā lole ulana plastik. Hoʻohana nui ʻia nā halelewa ma ke ʻano he uhi no ka halihali a me ka mālama ʻana, e pani ana i nā halelewa pulupulu kaumaha a ʻōpala. Hoʻohana nui ʻia nā pā a me ka ʻupena i loko o nā hale i nā lole plastik. Mea maʻamau: nā ʻeke logistics, nā ʻeke hoʻopili logistics. Nā pūʻolo ukana, nā pūʻolo ukana, a pēlā aku.
Nā mea hana ʻenekinia
Mai ka hoʻomohala ʻana o ka geotextile i nā makahiki 1980, ua hoʻonui ʻia ke kahua noi o ka lole ulana plastik, hoʻohana nui ʻia i ka mālama wai liʻiliʻi, ka mana uila, ke alaloa, ke alahao, ke awa, ke kūkulu ʻana i nā lua a me ke kūkulu ʻana i nā koa. I loko o kēia mau papahana, loaʻa i nā geosynthetics nā hana o ka kānana, ka hoʻokahe wai, ka hoʻoikaika ʻana, ka hoʻokaʻawale ʻana a me ka kaohi ʻana i ka seepage. ʻO nā geotextiles plastik kekahi o nā geotextiles synthetic.
Mea hoʻomalu waikahe
He mea nui nā ʻeke ulana no ke kāohi ʻana i ke kahe. He mea nui hoʻi lākou i ke kūkulu ʻana i nā ʻauwai, nā muliwai, nā alahao a me nā alanui. He mau ʻeke ulana kūʻē i ka ʻike, nā ʻeke ulana kūʻē i ka maloʻo a me nā ʻeke ulana kūʻē i ke kahe.
Aia ma luna aʻe kahi hoʻopili liʻiliʻi no nā mea āpau e hoʻopau ana i ke ʻano ʻeke ulana a me ka laulā o ka hoʻohana ʻana o ka ʻōlelo aʻoaʻo pili, ma o ka kaʻana like ʻana i ka ʻike, ke ʻano a me ka laulā o ka hoʻohana ʻana o nā ʻeke ulana i loaʻa kekahi ʻike noʻonoʻo, inā makemake ʻoe e hele hohonu i loko o ka ʻeke o ka ʻike mākeke, hiki iā ʻoe ke hoʻokaʻaʻike aku i ka mea kūʻai aku ma kā mākou hui, a i ʻole ma ka hikina a me ka noiʻi ʻana i ka ʻeke ulana ma kahi, ua kūkākūkā ʻia ke kamaʻilio like ʻana ma kēia pepa.
Ka manawa hoʻouna: Iulai-03-2020