Nā pono a me nā pōʻino o nā mea hoʻopaʻa paʻakai kēpau

ʻO nā pono o nā mea hoʻopaʻa paʻakai kēpau:
1. Paʻa maikaʻi o ka wela: Me ka hiki ke chelating, hiki iā ia ke pani i nā ʻātoma chlorine paʻa ʻole, ka nui o ka metala, a me ka hiki ke omo iā HCl.
2. Palekana uila maikaʻi loa: Kumukūʻai haʻahaʻa.
3. Kū'ē maika'i loa i ke kukui: Loa'a i kekahi mau 'ano like 'ole ka lubricity maika'i. E like me ke kēpau dihydrogen phosphate, loa'a iā ia ke kūpa'a maika'i, nā hopena antioxidant a me ka pale UV, a hiki ke hā'awi i nā ʻao'ao me ke kūpa'a kukui maika'i a me ke kūpa'a oxygen wela o waho, a me ka laumania o ka 'ili. Hiki i ka hui pū 'ana me TiO2 ke hō'emi i ka nui o nā mea ho'omo'a UV a me nā antioxidants i ho'ohana 'ia, a 'o Hechuan ka 'ōnaehana pa'a i ho'ohana nui 'ia ma nā ʻao'ao PVC ma Kina.
4. Maikaʻi ke kaʻina hana: Kūpono no nā ʻano hana like ʻole a loaʻa iā ia ka hana o ka pigment keʻokeʻo.
ʻO nā hemahema o nā mea hoʻopaʻa paʻakai kēpau:
1. Lepo nui: I ka wā e hoʻohana ai, nui ka lepo a me nā ana he nui, hiki ke alakaʻi maʻalahi i nā hewa ana a loaʻa ka hopena koʻikoʻi i ka maikaʻi o nā ʻaoʻao, e hoʻoulu ai i ka haumia. He mea ʻawahia ka hanu ʻana i ka lepo i ke kino o ke kanaka.
2. Piʻi aʻe ka likelika o ka hoʻohana ʻana i ka loli kala polū uliuli.
3. E palaho ka paʻakai kēpau monomer me ka resin PVC i loko o ke ʻano hana e hana iā HCl a me PbCl2: e hoʻoulu mau ia i ka ua ʻana o nā ion metala. Ke neʻe lākou i ka ʻili o ke ʻano hana, ma nā wahi me ka haumia sulfur nui, hiki ke hana ʻia ka haumia sulfurization, e alakaʻi ana i ka hoʻololi ʻana o ke ʻano hana. No laila, pono e hoʻohui ʻia nā mea uhi ion cadmium kēpau, nā mea chelating, a me nā mea ʻē aʻe i ka formula paʻakai kēpau. ʻO kā lākou hana ka hana ʻana i nā hui me nā haumia e like me nā chloride i hana ʻia e ke ʻano hana, pale i ka ua ʻana o nā chloride metala kūpono ʻole, a pale i ka haumia sulfurization a me ka hoʻololi ʻana.
4. Ka hoʻopuehu maikaʻi ʻole: ʻAʻole maikaʻi ka hoʻopuehu ʻana o nā mea hoʻopaʻa paʻakai kēpau.
5. ʻAkika nui: He ʻakika loa nā mea hoʻopaʻa paʻakai kēpau.
6. ʻAno kala mua: Loaʻa i nā mea hoʻopaʻa paʻakai kēpau ka ʻano kala mua, e paʻakikī ai ka loaʻa ʻana o nā huahana moakaka a me nā huahana me nā kala ʻōlinolino.
7. ʻAʻohe lubricity: ʻAʻohe lubricity o nā mea hoʻopaʻa paʻakai kēpau a ua maʻalahi i ka haumia sulfur.
I ka hōʻuluʻulu manaʻo, he mau pono kūikawā ko nā mea hoʻopaʻa paʻakai kēpau i ka hana ʻana i ka palakiko, akā aia kekahi mau hemahema koʻikoʻi ʻaʻole hiki ke hoʻowahāwahā ʻia. I nā hana maoli, pono e noʻonoʻo pono i kēia mau mea a hana i nā hana kūpono e lanakila ai i ko lākou mau hemahema.