PVC mu Waya ndi Chingwe: Katundu wa Zinthu Zofunika Kwambiri

1. PVC utomoni

Utomoni wa PVC ndi polima wopangidwa ndi thermoplastic wopangidwa ndi polymerization ya ma monomers a vinyl chloride. Kapangidwe kake ka mamolekyulu kamakhala ndi:

(1) Monga polima ya thermoplastic, imasonyeza kusinthasintha kwabwino komanso kusinthasintha.

(2) Kupezeka kwa ma C-Cl polar bonds kumapatsa resin polarity yolimba, zomwe zimapangitsa kuti pakhale dielectric constant (ε) ndi dissipation factor (tanδ) yambiri, pomwe imapereka mphamvu yayikulu ya dielectric pama frequency otsika. Ma polar bonds awa amathandiziranso kukhala ndi mphamvu yayikulu pakati pa mamolekyulu ndi mphamvu yayikulu yamakina.

(3) Maatomu a chlorine omwe ali mu kapangidwe ka mamolekyu amapereka mphamvu zoletsa moto pamodzi ndi kukana mankhwala ndi nyengo. Komabe, maatomu a chlorine awa amasokoneza kapangidwe ka kristalo, zomwe zimapangitsa kuti kutentha kukhale kochepa komanso kukana kuzizira, zomwe zitha kukonzedwa kudzera mu zowonjezera zoyenera.

2. Mitundu ya PVC Resin

Njira zopangira polymerization ya PVC zikuphatikizapo: suspension polymerization, emulsion polymerization, bulk polymerization, ndi solution polymerization.

Njira yopangira polymerization yoyimitsidwa ndiyo yodziwika kwambiri pakupanga utomoni wa PVC, ndipo iyi ndi mtundu womwe umagwiritsidwa ntchito pakugwiritsa ntchito waya ndi chingwe.

Ma resini a PVC opangidwa ndi polymer amagawidwa m'mitundu iwiri:
Utomoni womasuka (mtundu wa XS): Umadziwika ndi kapangidwe kake kokhala ndi mabowo, kuyamwa kwambiri kwa pulasitiki, kupangika mosavuta kwa pulasitiki, kuwongolera kosavuta kwa kukonza, ndi tinthu tating'onoting'ono ta gel, zomwe zimapangitsa kuti ikhale chisankho chomwe chimakondedwa kwambiri pakugwiritsa ntchito waya ndi chingwe.
Utomoni wamtundu wochepa (mtundu wa XJ): Umagwiritsidwa ntchito makamaka pazinthu zina zapulasitiki.

3. Katundu Waukulu wa PVC

(1) Kapangidwe ka Kuteteza Magetsi: Monga chinthu choteteza magetsi cha polar kwambiri, utomoni wa PVC umasonyeza kalembedwe kabwino koma kotsika pang'ono ka kutetezera magetsi poyerekeza ndi zinthu zosakhala polar monga polyethylene (PE) ndi polypropylene (PP). Kukana kwa voliyumu kumapitirira 10¹⁵ Ω·cm; pa 25°C ndi 50Hz frequency, chokhazikika cha dielectric (ε) chimachokera pa 3.4 mpaka 3.6, chimasiyana kwambiri ndi kusintha kwa kutentha ndi ma frequency; chinthu chotulutsa (tanδ) chimachokera pa 0.006 mpaka 0.2. Mphamvu ya kusweka imakhalabe yokwera kutentha kwa chipinda ndi ma frequency amphamvu, osakhudzidwa ndi polarity. Komabe, chifukwa cha kutayika kwake kwakukulu kwa dielectric, PVC si yoyenera kugwiritsa ntchito ma voltage apamwamba komanso ma frequency apamwamba, chifukwa nthawi zambiri imagwiritsidwa ntchito ngati zinthu zotetezera mawaya otsika ndi apakati a voltage pansi pa 15kV.

(2) Kukhazikika kwa Ukalamba: Ngakhale kapangidwe ka mamolekyu kamasonyeza kukhazikika kwa ukalamba chifukwa cha ma bond a chlorine-carbon, PVC imakonda kutulutsa hydrogen chloride panthawi yokonza zinthu pansi pa kutentha ndi kupsinjika kwa makina. Kusungunuka kwa okosijeni kumabweretsa kuwonongeka kapena kulumikizidwa, zomwe zimapangitsa kuti mtundu usinthe, kusweka, kuchepa kwakukulu kwa mphamvu zamakina, komanso kuwonongeka kwa magwiridwe antchito amagetsi. Chifukwa chake, zokhazikika zoyenera ziyenera kuwonjezeredwa kuti ziwongolere kukana ukalamba.

(3) Kapangidwe ka Thermomechanical: Monga polima wosasinthika, PVC imapezeka m'magawo atatu enieni pa kutentha kosiyana: mkhalidwe wagalasi, mkhalidwe wokhuthala kwambiri, ndi mkhalidwe wa kuyenda kwa viscous. Ndi kutentha kwa kusintha kwa galasi (Tg) pafupifupi 80°C ndi kutentha kwa kuyenda kwa pafupifupi 160°C, PVC mu mkhalidwe wake wagalasi pa kutentha kwa chipinda sichingakwaniritse zofunikira pakugwiritsa ntchito waya ndi chingwe. Kusintha ndikofunikira kuti pakhale kusinthasintha kwakukulu pa kutentha kwa chipinda pomwe kumasunga kutentha koyenera komanso kukana kuzizira. Kuwonjezera mapulasitiki kumatha kusintha bwino kutentha kwa kusintha kwa galasi.

ZokhudzaDZIKO LIMODZI (Chingwe cha OW)

Monga kampani yotsogola yopereka zinthu zopangira waya ndi chingwe, ONE WORLD (OW Cable) imapereka mankhwala apamwamba a PVC otetezera kutentha ndi kugwiritsa ntchito zigoba, omwe amagwiritsidwa ntchito kwambiri mu zingwe zamagetsi, mawaya omangira, zingwe zolumikizirana, ndi mawaya amagalimoto. Zipangizo zathu za PVC zimakhala ndi zotetezera kutentha zamagetsi zabwino kwambiri, kuletsa moto, komanso kukana nyengo, mogwirizana ndi miyezo yapadziko lonse lapansi monga UL, RoHS, ndi ISO 9001. Tadzipereka kupereka mayankho odalirika komanso otsika mtengo a PVC ogwirizana ndi zosowa za makasitomala athu.