I-Polyvinyl chloride (PVC)ipulasitiki iyinhlanganisela yezinto ezakhiwe ngokuhlanganisa inhlaka ye-PVC nezithasiselo ezihlukahlukene. Ibonisa izakhiwo ezinhle kakhulu zemishini, ukumelana nokugqwala kwamakhemikhali, izici zokuzicisha ngokwazo, ukumelana nesimo sezulu esihle, izakhiwo eziphakeme zokuvala ugesi, ukucutshungulwa kalula, kanye nezindleko eziphansi, okuyenza ibe yinto ekahle yokufakwa kwezintambo nokufakwa kwamakhebula.
I-PVC resin iyi-polymer ye-thermoplastic eqondile eyakhiwe yi-polymerization ye-vinyl chloride monomers. Isakhiwo sayo samangqamuzana sihlanganisa:
(1) Njengepolymer ye-thermoplastic, ibonisa ipulasitiki enhle nokuguquguquka.
(2) Ukuba khona kwamabhondi amhlophe e-C-Cl kunikeza inhlaka ukugqama okuqinile, okuholela ekulinganisweni okuphezulu kwe-dielectric (ε) kanye nesici sokulahla (tanδ), kuyilapho inikeza amandla aphezulu e-dielectric kumaza aphansi. Lezi zibopho ze-polar nazo zinomthelela emandleni aqinile e-intermolecular namandla aphezulu emishini.
(3) Ama-athomu e-chlorine esakhiweni samangqamuzana anikeza izici ezingabambezeli ilangabi kanye nokumelana okuhle kwamakhemikhali nesimo sezulu. Kodwa-ke, lawa ma-athomu e-chlorine aphazamisa ukwakheka kwekristalu, okuholela ekumelaneni nokushisa okuphansi kanye nokumelana nokubanda okubi, okungathuthukiswa ngezithasiselo ezifanele.
2.Izinhlobo ze-PVC Resin
Izindlela ze-polymerization ze-PVC zifaka: i-polymerization yokumiswa, i-emulsion polymerization, i-polymerization ngobuningi, kanye ne-polymerization yesisombululo.
Indlela ye-suspension polymerization okwamanje ihamba phambili ekukhiqizeni inhlaka ye-PVC, futhi lolu wuhlobo olusetshenziswa ekufakweni kwezintambo nezintambo.
Izinhlayiya ze-PVC ezimisiwe-polymerized zihlukaniswa zibe izinhlobo ezimbili zesakhiwo:
I-resin yohlobo oluxekethile (uhlobo lwe-XS): Iphawuleka ngesakhiwo esinezimbotshana, ukumuncwa okuphezulu kwe-plasticizer, ukufakwa kalula kwe-plastication, ukulawulwa kokucubungula okulula, kanye nezinhlayiya zejeli ezimbalwa, okuyenza ibe inketho ekhethwayo ekufakweni kwentambo nentambo.
I-resin yohlobo oluhlangene (uhlobo lwe-XJ): Isetshenziselwa kakhulu eminye imikhiqizo yepulasitiki.
3.Izakhiwo Eziyinhloko ze-PVC
(1)Izici Zokuvala Kagesi: Njengempahla ye-dielectric ephezulu kakhulu, i-PVC resin ibonisa izinto ezinhle kodwa ezingaphansi kancane zokufakwa kukagesi uma kuqhathaniswa nezinto ezingezona ezomhlaba njenge-polyethylene (PE) ne-polypropylene (PP). Ukumelana nevolumu kudlula 10¹⁵ Ω·cm; ku-25 ° C kanye ne-50Hz imvamisa, i-dielectric constant (ε) isukela ku-3.4 kuya ku-3.6, ihluka kakhulu ngokushintsha kwezinga lokushisa nemvamisa; isici sokulahla (tanδ) sisuka ku-0.006 siye ku-0.2. Amandla okuqhekeka ahlala ephezulu kuthempelesha yegumbi kanye nemvamisa yamandla, angathinteki i-polarity. Kodwa-ke, ngenxa yokulahleka kwayo kwe-dielectric ephezulu uma kuqhathaniswa, i-PVC ayifanele ukusetshenziswa kwamandla kagesi aphezulu kanye namaza aphakeme, ngokuvamile isetshenziswa njengezinto zokufakelwa kwezintambo zamakhebuli aphansi naphakathi angaphansi kuka-15kV.
(2) Ukuzinza Kokuguga: Nakuba ukwakheka kwamangqamuzana kubonisa ukuzinza okuhle kokuguga ngenxa yebhondi ye-chlorine-carbon, i-PVC ijwayele ukukhulula i-hydrogen chloride ngesikhathi sokucubungula ngaphansi kokucindezeleka okushisayo nokomshini. I-oxidation iholela ekonakaleni noma ekuxhumaneni okuphambene, okubangela ukushintsha kombala, ukufiphala, ukwehla okukhulu kwezakhiwo zemishini, kanye nokuwohloka kokusebenza kokufakwa kukagesi. Ngakho-ke, ama-stabilizer afanelekile kufanele afakwe ukuze kuthuthukiswe ukumelana nokuguga.
(3)Izakhiwo ze-Thermomechanical: Njengepolymer e-amorphous, i-PVC ikhona ezifundeni ezintathu ezibonakalayo kumazinga okushisa ahlukene: isimo sengilazi, isimo se-high-elastic, nesimo sokugeleza kwe-viscous. Ngezinga lokushisa lengilazi elishintshashintshayo (Tg) elilinganiselwa ku-80°C kanye nezinga lokushisa lokugeleza cishe elingu-160°C, i-PVC esimweni sayo esiyingilazi ekamelweni lokushisa ayikwazi ukuhlangabezana nezidingo zocingo nekhebula. Ukuguqulwa kuyadingeka ukuze kuzuzwe ukunwebeka okuphezulu ekamelweni lokushisa ngenkathi kugcinwa ukushisa okwanele nokumelana nokubanda. Ukwengezwa kwama-plasticizers kungalungisa kahle izinga lokushisa lokuguqulwa kwengilazi.
MayelanaONE WORLD (OW Cable)
Njengomhlinzeki oholayo wezinto zokusetshenziswa zocingo nekhebula, ONE WORLD (OW Cable) ihlinzeka ngezinhlanganisela ze-PVC zekhwalithi ephezulu zokufakwa kwe-insulation kanye nezicelo zokushela, ezisetshenziswa kakhulu kuzintambo zikagesi, izintambo zokwakha, izintambo zokuxhumana, nezintambo zezimoto. Izinto zethu ze-PVC zifaka ukufakwa kukagesi okuhle kakhulu, ukuncipha kwelangabi, ukumelana nesimo sezulu, okuhambisana nezindinganiso zamazwe ngamazwe njenge-UL, RoHS, ne-ISO 9001. Sizibophezele ekuletheni izixazululo ze-PVC ezinokwethenjelwa nezingabizi kakhulu eziklanyelwe izidingo zamakhasimende ethu.
Isikhathi sokuthumela: Mar-27-2025