ʻO ka wānana a me ka nānā ʻana o ka hana polyethylene a Kina a me ka ʻai ʻana i ka makahiki 2022

ʻO ka polyethylene (PE) kahi resin thermoplastic i hana ʻia e ka polymerization o ka ethylene.ʻO ka ʻoihana, loaʻa pū kekahi ethylene a me kahi liʻiliʻi o α- Copolymers o nā olefins.ʻO ka polyethylene he mea ʻala ʻole, ʻaʻohe mea ʻawaʻawa, a manaʻo ʻia e like me ka wax.Loaʻa iā ia ke kūpaʻa haʻahaʻa haʻahaʻa maikaʻi loa (hiki ke piʻi ka mahana lawelawe haʻahaʻa loa - 100 ~ - 70 ° C), kūpaʻa kemika maikaʻi, a hiki ke pale aku i ka nui o ka hoʻouka ʻana i ka waikawa a me ka alkali (ʻaʻole kū i nā waikawa me nā waiwai oxidizing).ʻAʻole hiki ke hoʻoheheʻe ʻia i nā mea hoʻoheheʻe maʻamau i ka mahana maʻamau, me ka liʻiliʻi o ka wai absorption a me ka insulation uila maikaʻi loa.

He kiʻekiʻe ka nui o ka hoʻohana ʻana i ka mana hana polyethylene ma Kina, a mālama ʻia ma kahi o 90% i ka makahiki āpau.Me ka hoʻomohala ʻana o ka hoʻokele waiwai o Kina, piʻi wikiwiki ka koi o ka mākeke polyethylene, a piʻi pū ka huahana.I nā makahiki i hala iho nei, ua hoʻomau ka nui o ka hana a me ka hoʻopuka polyethylene o Kina.ʻO ka hana polyethylene o Kina ma kahi o 22.72 miliona tons, me ka piʻi ʻana o ka makahiki he 11.8%, a ʻoi aku ka hopena ma mua o 30 miliona tons.

Ua piʻi mālie ka ʻai ʻana o ka polyethylene.I ka makahiki 2021, ua emi iho ka hoʻohana ʻana o ka polyethylene ma Kina i 37.365 miliona tons, he 3.2%.Ma muli o ka hopena o ke kūlana maʻi ahulau a me ka hoʻohana ʻana i ka ikehu, a ua hoʻokuʻu a hōʻemi paha kekahi mau hale hana i lalo.Me ka hoʻomaikaʻi ʻana i ka pono ponoʻī, e emi mālie ka hilinaʻi PE import.I ka wā e hiki mai ana, me ka hoʻomaikaʻi ʻana o ke kūlana maʻi maʻi a me ka ulu mau ʻana o ka hoʻokele waiwai o ka home, e piʻi mau ka koi PE.Manaʻo ʻia e hoʻōla lohi i 2022, e hoʻonui ana i 39 miliona tons.

Nā waiwai: ʻono ʻole, ʻala ʻole, ʻona ʻole, opalescent, nā ʻāpana waxy me ka nui o kahi 0.920 g/cm3 a me kahi helu heheʻe o 130 ℃ ~ 145 ℃.ʻAʻole hiki ke hoʻoheheʻe ʻia i ka wai, hiki ke hoʻoheheʻe ʻia i loko o nā hydrocarbons, etc. Hiki iā ia ke pale i ka ʻino o ka hapa nui o nā waikawa a me nā alkalis, he haʻahaʻa haʻahaʻa o ka wai, hiki ke mālama i ka maʻalahi i nā haʻahaʻa haʻahaʻa, a loaʻa ka insulation uila kiʻekiʻe.