ʻO Polyvinyl Chloride (PVC) kekahi o nā mea thermoplastic nui loa a hoʻohana nui ʻia ma ka honua. Hoʻohana ʻia ʻo PVC i nā ʻano hana like ʻole, mai ke kūkulu ʻana a hiki i ka mālama olakino. Ma kēia ʻatikala, e ʻimi mākou i ka PVC, kona mau waiwai, hoʻohana, a me nā mea hou aku.
He aha ka Polyvinyl Chloride (PVC)?
ʻO ka Polyvinyl Chloride (PVC) he polymer synthetic i hana ʻia mai ka polymerization o vinyl chloride. Ua hoʻokumu mua ʻia i ka makahiki 1872 a ua hoʻomaka i ka hana pāʻoihana i nā makahiki 1920 e ka BF Goodrich Company. Hoʻohana pinepine ʻia ʻo PVC i ka ʻoihana kūkulu hale, akā ʻo kāna mau noi pū kekahi i nā hōʻailona, mālama olakino, textiles, a me nā mea hou aku.
Loaʻa ka PVC ma nā ʻano kumu ʻelua:
- PVC paakiki (uPVC)- He mea ikaika a paʻa ka PVC unplasticized i hoʻohana ʻia i ka paipu, nā puka makani, a me nā mea hoʻolālā ʻē aʻe.
- PVC hikiwawe- Hoʻololi ʻia me nā plasticizers, palupalu ka PVC maʻalahi, hiki ke hoʻohana ʻia i nā huahana e like me ka insulation uea uila, ka papahele, a me nā paipu maʻalahi.
Nā ʻano o ka Polyvinyl Chloride (PVC)
ʻO nā waiwai o PVC ka mea i makemake ʻia no nā noi he nui:
- ʻO ka mānoanoa: Ua oi aku ka oi o ka PVC ma mua o ka nui o na plastic, me ka umekaumaha ma kahi o 1.4.
- Ka lōʻihi: Kūleʻa ʻo PVC i ka hoʻohaʻahaʻa ʻana mai nā kumu kūlohelohe, nā kemika, a me nā kukuna UV, e kūpono ai no nā huahana lōʻihi.
- Ka ikaika: Ke hoʻokiʻekiʻe nei ʻo Rigid PVC i ka ikaika tensile maikaʻi a me ka paʻakikī, ʻoiai ʻo PVC hiki ke mālama i ka maʻalahi a me ka ikaika.
- Hoʻohana hou: He mea maʻalahi ke hana hou ʻana o PVC a ʻike ʻia e ka resin code “3,” e paipai ana i ka hoʻomau.
ʻO nā mea nui o PVC
- Ka wela hehee: 100°C a 260°C (212°F a 500°F), ma muli o nā mea hoʻohui.
- Ikaika U'i: ʻO ka PVC maʻalahi mai ka 6.9 a i ka 25 MPa, ʻoiai ʻoi aku ka ikaika o ka PVC paʻa i ka 34 a i ka 62 MPa.
- Hoʻololi wela: Hiki i ka PVC ke pale i nā mahana a hiki i 92°C (198°F) ma mua o ka hoʻololi ʻana.
- Pale ʻino: Kūleʻa loa ka PVC i nā kemika a me nā alkalies, e lilo ia i koho paʻa no nā ʻoihana like ʻole.
Nā ʻano o ka PVC: ʻoʻoleʻa vs
Loaʻa ka PVC ma nā ʻano ʻelua:
- PVC paakiki(uPVC): He paʻakikī kēia ʻano a hoʻohana pinepine ʻia i nā noi hana e like me nā paipu paipu a me ka ʻaoʻao. Ua kapa ʻia ʻo "vin
- PVC hikiwawe: Loaʻa ma ka hoʻohui ʻana i nā plasticizers, hoʻohana ʻia ka PVC maʻalahi i nā noi kahi e pono ai ke kulou a i ʻole ka maʻalahi, e like me ka insulation no nā kaula uila, nā mea lapaʻau, a me ka papahele.
No ke aha i hoʻohana pinepine ʻia ai ka PVC?
ʻO ka kaulana o PVC mai kānakumu kūʻai haʻahaʻa, loaʻa, alaula o na waiwai. Makemake nui ʻia ʻo Rigid PVC no nā noi hoʻolālā ma muli o kona ikaika a me ka lōʻihi, ʻoiai ʻo ka palupalu a me ka maʻalahi o ka PVC hiki ke kūpono no nā huahana e koi ana i ke kulou ʻana, e like me ka paipu lapaʻau a i ʻole ka papahele.
Pehea ka hana ʻana o PVC?
Hana ʻia ka PVC ma o kekahi o nā ʻano polymerization ʻekolu:
- Hoʻokuʻu polymerization
- Emulsion polymerization
- ʻO ka polymerization nui
Hoʻopili kēia mau kaʻina i ka polymerization o nā monomers vinyl chloride i loko o ka polyvinyl chloride paʻa, a laila hiki ke hana ʻia i nā huahana like ʻole.
PVC i ka Prototype Development: CNC Machining, 3D Printing, and Injection Molding
ʻOiai he mea kaulana ʻo PVC i nā ʻoihana like ʻole, ke hōʻike nei ia i kekahi mau pilikia i ka wā e pili ana i ka prototyping a me ka hana ʻana:
- CNC Mīkini: Hiki ke ʻoki ʻia ka PVC me ka hoʻohana ʻana i nā mīkini CNC, akā he abrasive a corrosive, no laila pono nā mea hana kūikawā (e like me nā mea ʻoki kila kila) e pale ai i ka ʻaʻahu a me ka waimaka.
- Paʻi 3D: ʻAʻole hoʻohana pinepine ʻia ʻo PVC no ka paʻi 3D ma muli o kona ʻano corrosive. Hoʻohui ʻia, hoʻokuʻu ia i nā kinoea ʻawaʻawa ke hoʻomehana ʻia, e lilo ia i mea haʻahaʻa loa no kēia kumu.
- Hoʻoheheʻe ʻia: Hiki ke PVChoʻoheheʻe ʻia, akā pono kēia kaʻina hana i ka ea kūpono a me nā mea paahana pale-corrosion ma muli o ka hoʻokuʻu ʻana o nā kinoea ʻino e like me ka hydrogen chloride (HCl).
He mea make anei ka PVC?
Hiki iā PVC ke hoʻokuʻuuahu ʻawaʻawake puhi ʻia a wela paha, ʻoi aku hoʻi ma nā wahi ʻoihana e like me ka paʻi 3D, CNC machining, a me ka hoʻoheheʻe ʻana. Hiki i nā mea ke hoʻokuʻu i nā kinoea ʻino e like mechlorobenzeneahydrogen chloride, hiki ke hoʻopilikia i ke olakino. Pono e hoʻohana i ka ea kūpono a me nā mea pale i ka wā e hana ai.
Nā pōmaikaʻi o PVC
- Kūʻai-pono: ʻO PVC kekahi o nā plastics hiki ke loaʻa.
- Ka lōʻihi: Kūʻē ia i ka hopena, nā kemika, a me ka pōʻino o ke kaiapuni.
- Ka ikaika: Hāʻawi ʻo PVC i ka ikaika tensile kupaianaha, ʻoi loa i kona ʻano paʻa.
- ʻAno ʻano: Hiki ke hoʻoheheʻe ʻia ka PVC, ʻokiʻoki, a hana ʻia i loko o nā ʻano huahana like ʻole, hiki ke hoʻololi ʻia no nā noi like ʻole.
Nā hemahema o PVC
- ʻIke wela: ʻAʻole paʻa ka wela o ka PVC, ʻo ia hoʻi, hiki iā ia ke warp a hoʻohaʻahaʻa paha i nā wela kiʻekiʻe ke ʻole e hoʻohui ʻia nā stabilizers i ka wā hana.
- Hoʻokuʻu ʻawaʻawa: Ke puhi ʻia a hoʻoheheʻe ʻia, hoʻopuka ʻo PVC i nā uahi ʻino, e koi ana i ka mālama pono ʻana a me nā protocol palekana.
- ʻAno ʻino: Hiki ke hoʻopōʻino ʻia ka PVC i nā mea hana metala inā ʻaʻole mālama pono ʻia.
Ka hopena
ʻO ka Polyvinyl Chloride (PVC) kahi mea waiwai nui e hāʻawi ana i kahi kaulike maikaʻi loa o ka affordability, ikaika, a me ke kū'ē ʻana i nā mea kūlohelohe. ʻO kona mau ʻano like ʻole, paʻa a maʻalahi, hiki ke hoʻohana ʻia ma nā ʻoihana he nui, mai ke kūkulu ʻana i ka mālama olakino. Eia nō naʻe, he mea nui e hoʻomaopopo i nā pilikia olakino a me nā pilikia i ka hoʻoponopono ʻana i ka PVC, ʻoi aku hoʻi e pili ana i kona hoʻokuʻu ʻana a me ke ʻano corrosive. Ke hoʻohana pono ʻia, ʻo PVC kahi mea waiwai nui e hoʻomau i ka hana koʻikoʻi i ka hana ʻana a me ke kūkulu ʻana o kēia wā.
Ka manawa hoʻouna: Jan-06-2025
