1. He aha ka pepa PVC paʻa?
ʻO ka inoa piha o ka pepa paʻa PVC he pepa paʻa polyvinyl chloride. ʻO ka pepa PVC paʻa he mea polymer i hana ʻia me ka vinyl chloride ma ke ʻano he mea maka, me nā mea hoʻopaʻa, nā lubricants a me nā mea hoʻopihapiha i hoʻohui ʻia. Loaʻa iā ia ka antioxidant kiʻekiʻe loa, ka waikawa ikaika a me ke kūpaʻa hōʻemi, ka ikaika kiʻekiʻe, ke kūpaʻa maikaʻi loa a me ka hiki ʻole ke lapalapa, a hiki ke pale aku i ka pala i hoʻokumu ʻia e ka loli o ke aniau. ʻO nā pepa paʻa PVC maʻamau e komo pū me nā pepa PVC moakaka, nā pepa PVC keʻokeʻo, nā pepa PVC ʻeleʻele, nā pepa PVC kala, nā pepa PVC hina, a pēlā aku.
2. He aha ka pōmaikaʻi o ka pepa PVC paʻa?
He nui nā pono o nā pepa PVC paʻa e like me ke kūpaʻa i ka pala, ka pale ʻana i ke ahi, ka pale ʻana i ka hoʻopili ʻana, a me ke kūpaʻa ʻana i ka oxidation. Eia kekahi, hiki ke hana hou ʻia a he haʻahaʻa nā kumukūʻai hana. Ma muli o ko lākou ākea o nā hoʻohana a me nā kumukūʻai kūpono, ua noho mau lākou i kahi ʻāpana o ka mākeke pepa plastik. I kēia manawa, ua hōʻea ka hoʻomaikaʻi ʻana a me ka hoʻolālā ʻana o ko mākou ʻāina i ka pae holomua honua.
3. He aha ka hoʻohana ʻana o ka pepa PVC?
He nui nā ʻano like ʻole o nā pepa PVC, a he nui nā ʻano like ʻole o nā pepa PVC, e like me nā pepa PVC aniani, nā pepa PVC hau, nā pepa PVC ʻōmaʻomaʻo, nā ʻōwili pepa PVC, a pēlā aku. Ma muli o kāna hana hana maikaʻi, ke kumukūʻai hana haʻahaʻa, ke kūpaʻa i ka pala a me ka insulation. Hoʻohana nui ʻia nā pepa PVC a hoʻohana nui ʻia no ka hana ʻana: nā uhi hoʻopaʻa PVC, nā kāleka PVC, nā ʻiliʻili paʻakikī PVC, nā pepa PVC paʻakikī, a pēlā aku.
4. He aha ka hemahema o ka pepa PVC?
ʻO ka pepa PVC kekahi palakiko i hoʻohana pinepine ʻia. He resin ia i haku ʻia me ka resin polyvinyl chloride, plasticizer, a me ka antioxidant. ʻAʻole ia he mea ʻawahia i loko ona iho. Akā ʻo nā mea kōkua nui e like me nā plasticizers a me nā antioxidants he mea ʻawahia. Hoʻohana nui nā plasticizers i nā plasticizers i kēlā me kēia lā i ka dibutyl terephthalate a me ka dioctyl phthalate. He mea ʻawahia kēia mau kemika. ʻO ka antioxidant lead stearate i hoʻohana ʻia i loko o PVC he mea ʻawahia nō hoʻi. ʻO nā pepa PVC i loaʻa ka paʻakai alakaʻi antioxidants e hoʻoulu i ke alakaʻi ke hoʻopili lākou me nā mea hoʻoheheʻe e like me ka ethanol a me ka ether. Hoʻohana ʻia nā pepa PVC i loaʻa ke alakaʻi no ka hoʻopili ʻana i ka meaʻai. Ke hālāwai lākou me nā lāʻau palai palai, nā keke palai, nā iʻa palai, nā huahana ʻiʻo i kuke ʻia, nā mea ʻono a me nā meaʻai māmā, a pēlā aku, e pālahalaha nā molekala alakaʻi i loko o ka ʻaila. No laila, ʻaʻole hiki ke hoʻohana ʻia nā ʻeke palakiko pepa PVC e paʻa i ka meaʻai, ʻoiai ka meaʻai i loaʻa ka ʻaila. Eia kekahi, e hoʻopau mālie nā huahana palakiko polyvinyl chloride i ke kinoea hydrogen chloride i nā mahana kiʻekiʻe, e like me ka 50°C, he mea ʻino ia i ke kino kanaka.
