Polyvinyl chloride (PVC)Plastiki chinhu chakasanganiswa chinoumbwa nekusanganisa PVC resin nezvimwe zvinhu zvakasiyana-siyana. Inoratidza hunhu hwakanaka hwemakanika, kuramba ngura nemakemikari, hunhu hwekuzvidzima, kuramba mamiriro ekunze akanaka, hunhu hwepamusoro hwekudzivirira kupisa nemagetsi, nyore kugadzira, uye mutengo wakaderera, zvichiita kuti ive chinhu chakanakira kuputira nekudzivirira waya netambo.
PVC resin ipolymer yakatsetseka inogadzirwa ne thermoplastic inoumbwa ne polymerization ye vinyl chloride monomers. Maumbirwo ayo emamorekuru ane zvinotevera:
(1) Sepolymer inogadzirwa nethermoplastic, inoratidza kunaka kwepurasitiki uye kuchinjika.
(2) Kuvapo kweC-Cl polar bonds kunoita kuti resin ive ne polarity yakasimba, zvichikonzera kuti pave ne dielectric constant (ε) uye dissipation factor (tanδ) yakakwira, ukuwo ichipa simba re dielectric rakakwirira pama frequency akaderera. Izvi polar bonds zvinobatsirawo pakuva nesimba rakasimba re intermolecular uye simba rakawanda re mechanical.
(3) Maatomu echlorine ari muchimiro chemamorekuru anopa hunhu hunodzivirira moto pamwe chete nekudzivirira makemikari nemamiriro ekunze. Zvisinei, maatomu aya echlorine anokanganisa chimiro chekristaro, zvichiita kuti pave nekusadzivirira kupisa kwakaderera uye kusadzivirira kutonhora kwakaderera, izvo zvinogona kuvandudzwa kuburikidza nekuwedzera kwakakodzera.
2. Mhando dzePVC Resin
Nzira dzekugadzira polymerization dzePVC dzinosanganisira: suspension polymerization, emulsion polymerization, bulk polymerization, uye solution polymerization.
Nzira ye suspension polymerization ndiyo inonyanya kushandiswa mukugadzira PVC resin, uye iyi ndiyo mhando inoshandiswa mukushandisa waya netambo.
Maresini ePVC akasungirirwa akaiswa muzvikamu zviviri:
Resin yakareruka (XS-type): Inoratidzwa nechimiro chine maburi, inonyungudutsa purasitiki yakawanda, inopinza purasitiki nyore, inogadzirisa zviri nyore, uye ine zvidimbu zvishoma zvegel, zvichiita kuti ive sarudzo inosarudzwa pakushandisa waya netambo.
Resin yemhando yekombuta (XJ-type): Inonyanya kushandiswa kune zvimwe zvigadzirwa zvepurasitiki.
3. Hunhu Hunokosha hwePVC
(1) Hunhu Hwekudzivirira Magetsi: Sezvinhu zvine polar dielectric, PVC resin inoratidza hunhu hwakanaka asi husina kusimba zvakanyanya hwekudzivirira magetsi zvichienzaniswa nezvinhu zvisiri polar zvakaita se polyethylene (PE) ne polypropylene (PP). Kudzivirira kwehuwandu kunodarika 10¹⁵ Ω·cm; pa25°C ne50Hz frequency, dielectric constant (ε) inotangira pa3.4 kusvika pa3.6, ichisiyana zvakanyanya nekuchinja kwetembiricha uye frequency; dissipation factor (tanδ) inotangira pa0.006 kusvika pa0.2. Simba rekupwanyika rinoramba rakakwira patembiricha yemumba uye frequency yesimba, isingakanganiswe ne polarity. Zvisinei, nekuda kwekurasikirwa kwayo ne dielectric yakakwira, PVC haina kukodzera kushandiswa kwe high-voltage uye frequency yakakwira, ichishandiswa se insulation material kune low-nepakati-voltage cables dziri pasi pe15kV.
(2) Kugadzikana Kwekukwegura: Kunyange hazvo chimiro chemamorekuru chichiratidza kugadzikana kwakanaka kwekukwegura nekuda kwezvisungo zve chlorine-carbon, PVC inowanzo buritsa hydrogen chloride panguva yekugadziriswa pasi pekumanikidzwa kwekupisa uye kwemuchina. Kuoxidation kunotungamira mukuora kana kubatanidza, zvichikonzera kuchinja kweruvara, kupwanyika, kudzikira kukuru kwehunhu hwemuchina, uye kudzikira kwekushanda kwemagetsi ekuputira. Nokudaro, zvinosimbisa zvakakodzera zvinofanirwa kuwedzerwa kuti zvivandudze kuramba kwekukwegura.
(3) Hunhu hweThermomechanical: Sepolymer isina chimiro, PVC inowanikwa muzvikamu zvitatu zvemuviri patembiricha dzakasiyana: girazi, high-elastic state, uye viscous flow state. Nekupisa kwekuchinja kwegirazi (Tg) kunenge 80°C uye tembiricha yekuyerera inosvika 160°C, PVC iri muchimiro chayo chegirazi patembiricha yemukamuri haigone kusangana nezvinodiwa zvekushandisa waya netambo. Kugadziriswa kunodiwa kuti uwane elasticity yakakwira patembiricha yemukamuri uku uchichengetedza kupisa kwakakwana uye kudzivirira kutonhora. Kuwedzera mapurasitiki kunogona kugadzirisa tembiricha yekuchinja kwegirazi zvinobudirira.
NezveduDZIMWE DZINO (OW Cable)
Semutengesi anotungamira wezvinhu zvewaya netambo, ONE WORLD (OW Cable) inopa mishonga yePVC yepamusoro-soro yekushandisa mukudzivirira nekudzivirira tambo, inoshandiswa zvakanyanya mutambo dzemagetsi, waya dzekuvaka, tambo dzekutaurirana, uye waya dzemotokari. Zvinhu zvedu zvePVC zvine mudziyo wemagetsi wakanaka, mudziyo unodzivisa moto, uye mudziviriro yemamiriro ekunze, zvichitevedzera mitemo yepasi rose yakaita seUL, RoHS, uye ISO 9001. Takazvipira kupa mhinduro dzePVC dzakavimbika uye dzinoshanda dzakagadzirirwa zvinodiwa nevatengi vedu.
Nguva yekutumira: Kurume-27-2025