PVChe pōkole ia no ka polyvinyl chloride, a ʻo kona ʻano he pauka keʻokeʻo. ʻO PVC kekahi o nā plastik laulā ʻelima ma ka honua. Hoʻohana nui ʻia ia ma ka honua holoʻokoʻa, ʻoi aku hoʻi ma ke kahua kūkulu. Nui nā ʻano PVC. Wahi a ke kumu o nā mea maka, hiki ke hoʻokaʻawale ʻia ikalaka kalaponaʻano hana a meʻano hana ethyleneʻO nā mea maka o ke ʻano hana calcium carbide mai ka lanahu a me ka paʻakai. ʻO nā mea maka no ke kaʻina hana ethylene mai ka ʻaila maka. Wahi a nā kaʻina hana like ʻole, hiki ke hoʻokaʻawale ʻia i ke ʻano hoʻokuʻu a me ke ʻano emulsion. ʻO ka PVC i hoʻohana ʻia ma ke kahua kūkulu ʻana he ʻano hoʻokuʻu wale nō ia, a ʻo ka PVC i hoʻohana ʻia ma ke kahua ʻili he ʻano emulsion wale nō ia. Hoʻohana nui ʻia ka PVC hoʻokuʻu e hana i: PVCnā paipu, PVCnā ʻikepili pilikino, nā kiʻiʻoniʻoni PVC, nā kāmaʻa PVC, nā uea a me nā kaula PVC, nā papahele PVC a pēlā aku. Hoʻohana nui ʻia ka Emulsion PVC e hana i: nā mīkina lima PVC, ka ʻili hana PVC, ka pepa paia PVC, nā mea pāʻani PVC, a pēlā aku.
Mai ʻEulopa, ʻAmelika Hui Pū ʻIa a me Iapana mai ka ʻenehana hana PVC. Ua hōʻea ka mana hana PVC honua i 60 miliona tone, a ua helu ʻo Kina i ka hapalua o ka honua. Ma Kina, 80% o PVC i hana ʻia e ke kaʻina hana calcium carbide a me 20% e ke kaʻina hana ethylene, no ka mea, he ʻāina mau ʻo Kina me ka nui o ka lanahu a me ka liʻiliʻi o ka ʻaila.
Ka manawa hoʻouna: ʻAukake-29-2022