ʻO ka PVC ka polyvinyl chloride, he polymer polymerized e ka vinyl chloride monomer ma lalo o ka hana o ka peroxide, nā hui azo a me nā mea hoʻomaka ʻē aʻe, a i ʻole ma lalo o ka hana o ka māmā a me ka wela e like me ka mīkini polymerization radical manuahi.ʻO PVC kekahi o nā plastics nui loa o ka honua, i hoʻohana nui ʻia i nā ʻoihana like ʻole.
He aha ka PVC?ʻO PVC kahi mea maʻamau i ke ola.He aha ke ʻano o ka PVC?E nānā kākou i kēia lā. [manaʻo o PVC] ʻO PVC ka polyvinyl chloride maoli, ʻo ia ka polymer polymerized e vinyl chloride monomer me ka peroxide, azo compound a me nā mea hoʻomaka ʻē aʻe, a i ʻole ma lalo o ka hana o ka māmā a me ka wela e like me ka mīkini polymerization radical manuahi. .
[Nā hiʻohiʻona o PVC]: ʻO ka PVC he pauka keʻokeʻo me ke ʻano amorphous, a ʻo ka mahana hoʻololi aniani he 77 ~ 90 ℃.ʻO ka hoʻololi aniani he manaʻo paʻakikī.No ka pauka PVC, ʻo ka hoʻololi aniani ʻo ia i loko o kēia pae wela, e hoʻololi ʻo PVC mai ka pauka keʻokeʻo i ke kūlana aniani.E hoʻomaka ana ka PVC aniani e decompose ma kahi o 170 ℃.ʻAʻole paʻa i ka māmā a me ka wela, maʻalahi e hoʻoheheʻe a hana i ka hydrogen chloride.
[poino o PVC].Mai nā hiʻohiʻona o PVC, ʻike mākou ʻaʻole hiki ke hoʻohana wale ʻia ka PVC.Ma nā noi kūpono, pono e hoʻohui ʻia nā stabilizers e hoʻomaikaʻi i ka paʻa i ka wela a me ka māmā.Pono kākou e nānā pono maanei.I ka makahiki 2017, ua hoʻokaʻawale mua ʻia ka papa inoa o nā carcinogens i paʻi ʻia e ka hui honua no ka noiʻi ʻana e pili ana i ka maʻi kanesa o ka World Health Organization no ka ʻike ʻana, a ua hoʻokomo ʻia ʻo PVC i ka papa inoa o nā ʻano carcinogens ʻekolu.No laila, i ke ola o kēlā me kēia lā, e ho'āʻo e hoʻohana i nā pahu PVC e paʻa i ka meaʻai, e waiho i ka wai wela.
[noi o PVC], e like me kekahi o ka nui loa o ka honua-kumu pono plastics, PVC ua hoʻohana nui 'ia i loko o ke kūkulu hale, 'oihana huahana, kela la i keia mea e pono ai, ka papahele papahele, papahele tiles, artificial ili, paipu, uwea a me nā uwea, paʻi kiʻiʻoniʻoni, hue. , nā mea hoʻohuhū, nā mea hoʻopaʻa, ka nui fiber, etc.
Ka manawa hoʻouna: ʻAukake-02-2022