Polyvinyl chloride (PVC)He mea hui pū ʻia ka palaki i hana ʻia ma ka hoʻohui ʻana i ka resin PVC me nā mea hoʻohui like ʻole. Hōʻike ia i nā waiwai mechanical maikaʻi loa, ke kūpaʻa i ka pala kemika, nā ʻano kinai ponoʻī, ke kūpaʻa maikaʻi i ka wā, nā waiwai insulation uila kiʻekiʻe, ka maʻalahi o ka hana ʻana, a me ke kumukūʻai haʻahaʻa, e lilo ia i mea kūpono no ka insulation uea a me ke kaula a me ka uhi ʻana.
He polymer thermoplastic linear ka resin PVC i hoʻokumu ʻia e ka polymerization o nā monomers vinyl chloride. ʻO kona ʻano molekala:
(1) Ma ke ʻano he polymer thermoplastic, hōʻike ia i ka plasticity maikaʻi a me ka maʻalahi.
(2) ʻO ke alo o nā pilina polar C-Cl e hāʻawi i ka polarity ikaika o ka resin, e hopena ana i ka dielectric constant kiʻekiʻe (ε) a me ka dissipation factor (tanδ), ʻoiai e hāʻawi ana i ka ikaika dielectric kiʻekiʻe ma nā alapine haʻahaʻa. Hāʻawi pū kēia mau pilina polar i nā ikaika intermolecular ikaika a me ka ikaika mechanical kiʻekiʻe.
(3) Hāʻawi nā ʻātoma chlorine i loko o ke ʻano molekala i nā waiwai pale ahi me ke kūpaʻa kemika a me ke aniau maikaʻi. Eia nō naʻe, hoʻopilikia kēia mau ʻātoma chlorine i ke ʻano crystalline, e alakaʻi ana i ke kūpaʻa wela haʻahaʻa a me ke kūpaʻa anu maikaʻi ʻole, hiki ke hoʻomaikaʻi ʻia ma o nā mea hoʻohui kūpono.
2. Nā ʻano o ka PVC Resin
ʻO nā ʻano polymerization no ka PVC e komo pū ana me: suspension polymerization, emulsion polymerization, bulk polymerization, a me ka solution polymerization.
ʻO ke ʻano polymerization suspension ka mea nui i ka hana ʻana o ka resin PVC, a ʻo ia ke ʻano i hoʻohana ʻia i nā noi uea a me nā kaula.
Ua hoʻokaʻawale ʻia nā resins PVC suspension-polymerized i ʻelua mau ʻano kūkulu:
ʻO ka resin ʻano wehe (ʻano XS): Hōʻike ʻia e ke ʻano porous, ka omo plasticizer kiʻekiʻe, ka plastification maʻalahi, ka mana hana maʻalahi, a me nā ʻāpana gel liʻiliʻi, e lilo ia i koho makemake ʻia no nā noi uea a me ke kaula.
ʻO ka resin ʻano liʻiliʻi (ʻano XJ): Hoʻohana nui ʻia no nā huahana plastik ʻē aʻe.
3. Nā Waiwai Koʻikoʻi o ka PVC
(1) Nā Waiwai Hoʻokaʻawale Uila: Ma ke ʻano he mea dielectric polar kiʻekiʻe, hōʻike ka resin PVC i nā waiwai insulation uila maikaʻi akā haʻahaʻa iki i hoʻohālikelike ʻia me nā mea non-polar e like me ka polyethylene (PE) a me ka polypropylene (PP). ʻOi aku ka resistivity volume ma mua o 10¹⁵ Ω·cm; ma 25°C a me 50Hz frequency, ʻo ke ʻano dielectric constant (ε) mai 3.4 a 3.6, e loli nui ana me ka mahana a me nā loli alapine; ʻo ke kumu dissipation (tanδ) mai 0.006 a 0.2. Noho kiʻekiʻe ka ikaika breakdown ma ka mahana o ka lumi a me ka alapine mana, me ka hoʻopilikia ʻole ʻia e ka polarity. Eia nō naʻe, ma muli o kona pohō dielectric kiʻekiʻe, ʻaʻole kūpono ka PVC no nā noi voltage kiʻekiʻe a me ke alapine kiʻekiʻe, e hoʻohana pinepine ʻia ana ma ke ʻano he mea insulation no nā kaula voltage haʻahaʻa a me waena ma lalo o 15kV.
(2) Ke kūpaʻa o ka ʻelemakule: ʻOiai ke ʻano o ka molekala e hōʻike ana i ke kūpaʻa maikaʻi o ka ʻelemakule ma muli o nā pilina chlorine-carbon, ke hoʻokuʻu nei ʻo PVC i ka hydrogen chloride i ka wā o ka hana ʻana ma lalo o ke kaumaha wela a me ka mechanical. ʻO ka oxidation e alakaʻi i ka degradation a i ʻole ke cross-linking, e hana ana i ka discoloration, embrittlement, ka emi nui ʻana o nā waiwai mechanical, a me ka hōʻino ʻana o ka hana insulation uila. No laila, pono e hoʻohui ʻia nā mea hoʻopaʻa kūpono e hoʻomaikaʻi i ke kūpaʻa ʻana i ka ʻelemakule.
(3) Nā Waiwai Thermomechanical: Ma ke ʻano he polymer amorphous, aia ka PVC i ʻekolu mau kūlana kino ma nā mahana like ʻole: ke kūlana aniani, ke kūlana elastic kiʻekiʻe, a me ke kūlana kahe viscous. Me ka mahana hoʻololi aniani (Tg) ma kahi o 80°C a me ka mahana kahe ma kahi o 160°C, ʻaʻole hiki i ka PVC i kona kūlana aniani ma ka mahana o ka lumi ke hoʻokō i nā koi noi uea a me ke kaula. Pono ka hoʻololi ʻana e hoʻokō i ka elasticity kiʻekiʻe ma ka mahana o ka lumi me ka mālama ʻana i ka pale wela a me ke anu kūpono. Hiki i ka hoʻohui ʻana o nā plasticizers ke hoʻoponopono pono i ka mahana hoʻololi aniani.
E pili anaHONUA HOʻOKAHI (OW Cable)
Ma ke ʻano he mea hoʻolako alakaʻi o nā mea maka uea a me ke kaula, hāʻawi ʻo ONE WORLD (OW Cable) i nā hui PVC kiʻekiʻe no nā noi insulation a me nā sheathing, i hoʻohana nui ʻia i nā kaula mana, nā kaula kūkulu hale, nā kaula kamaʻilio, a me nā uea kaʻa. Loaʻa i kā mākou mau mea PVC ka insulation uila maikaʻi loa, ka pale ʻana i ka lapalapa, a me ke kūpaʻa ʻana i ka wā, e kūlike ana me nā kūlana honua e like me UL, RoHS, a me ISO 9001. Ua kūpaʻa mākou i ka hāʻawi ʻana i nā hopena PVC hilinaʻi a kūpono hoʻi i nā pono o kā mākou mea kūʻai aku.
Ka manawa hoʻouna: Malaki-27-2025