Olyvinyl chloride, inonyanya kuzivikanwa sePVC, ndiyo yechitatu-inonyanya kugadzirwa polymer yakagadzirwa, mushure me polyethylene uye polypropylene.PVC chikamu cheiyo vinyls cheni, iyo inosanganisirawo EDC neVCM.PVC resin mamakisi anogona kushandiswa kuomarara uye anochinjika maapplication;rigid inogara iri mutengi ane simba, asi muzvikamu izvo zviviri zvakabatana.Iyo yakawanda yakaoma PVC inoshandiswa zvakanyanya muindasitiri yekuvaka yepombi uye zvigadziriso senge drain-waste-vent (DWV) pombi, sewer, pombi yemvura, conduit (yemagetsi, nharembozha), uye pombi yekudiridza.Akaomesesa mamakisi ePVC ari zvakare muchivako uye misika yedzimba yemaprofile application senge magonhi, mahwindo mafuremu, fenzi, decking, yakasarudzika vinyl mataira.Vhoriyamu diki kwazvo yePVC yakaoma inogadzirirwa mabhodhoro, mamwe asiri ekudya kurongedza, uye makadhi echikwereti.PVC resin inogona kushandiswa mumashandisirwo anoshanduka nekuwedzera kweplasticizers.Mune fomu iri, rinoshandiswa zvakare muwaya uye tambo yekuvharisa, dehwe rekutevedzera, zvikwangwani, zvigadzirwa zvinoputika, denga remba, uye akawanda maapplication kwaanotsiva rabha.Iyi mukana wakasiyana-siyana, pamwe nehunhu hwakaita sekugara, kusapisa, kuramba makemikari neoiri, kugadzikana kwemuchina, uye nyore kugadzirisa uye kuumbwa, zvinoratidza kuti PVC inoramba iri yemakwikwi uye inokwezva sarudzo yezvishandiso zvakawanda mukuvaka uye zvivakwa, zvekurima, zvigadzirwa zvemagetsi. , uye maindasitiri ezvehutano.Nekudaro, PVC icharamba yakakosha thermoplastic pamusoro penguva refu.
Sezvo indasitiri yekuvaka ichiita basa rakakosha mumusika wePVC, kudiwa kwePVC kwakanyatso kuenderana nekukura kweGDP uye kusimukira kwehupfumi.Kushandiswa kwakasimba kwePVC kunowanzo nyanya kutariswa mune hupfumi huri kusimukira muAsia, hwakaita se mainland China, India, Pakistan, Vietnam, neIndonesia.Madhiraivha akajairika ePVC kushandiswa kwenzvimbo dzinodiwa zvakanyanya anosanganisira huwandu hwevanhu vane mamiriro ezvematongerwo enyika akagadzikana ayo achiri kuda mari yakawanda pazvivakwa.Chimwe chinhu kukura nedanho rebudiriro yechikamu chekurima chenyika.India, semuenzaniso inoda masisitimu akakosha kudiridza mapurazi ayo, ine yakakura, inoenderera kudiwa kwemapombi ePVC uye mafittings.Kazhinji, huwandu hwekukura huchave hune mwero muhupfumi hwakasimukira sezvo zvivakwa uye zvivakwa zvekutanga zvakatotangwa.
Iyi inotevera pie chati inoratidza kushandiswa kwenyika kwePVC:
Iyo vinyls indasitiri inzvimbo yakakura ine nhoroondo refu.Tekinoroji, vhoriyamu yekugadzira, tsoka yezvakatipoteredza, uye mutengo, zvakavandudza nekufamba kwenguva nekusimudzira mukuchengetedza uye mhando yechigadzirwa.Tekinoroji hunyanzvi huri kuramba huchiitika uye hwakanangana zvakanyanya nekukwikwidza-mutengo, sezvo kugadzirwa kwevinyl ibhizimusi repasi rose, uye vagadziri vanofanirwa kunge vachikwikwidza mukati mematunhu avo nepasirese.
Kugadzirwa kwePVC kunowanzoenderana ne ethylene feedstock, kunze kwe mainland China, uko acetylene feedstock inotonga.Muchiito che ethylene, EDC inogadzirwa neklorini yakananga kubva kuklorini uye ethylene.Mune imwe nhanho inotevera, yakatsemuka kugadzira VCM.Kugadzirwa kweVCM kunogumawo nekuburitswa kwe-chigadzirwa hydrogen chloride, iyo inowanzo shandiswa zvakare kugadzira EDC yakawanda neoxychlorination nekuwedzera ethylene.VCM inozoitwa polymerized kugadzira PVC.Muchiitiko cheacetylene, zvisinei, hapana danho reEDC rinobatanidzwa;pane kudaro, VCM inogadzirwa zvakananga kubva kune acetylene.Mainland China ndiyo chete musika une acetylene-based PVC zvivakwa;zvisinei, nekuda kwehukuru hweindasitiri yeChina, nzira yeacetylene ichiri kuverengera chikamu chakakosha chehuwandu hwepasi rose hwePVC.
Nguva yekutumira: Kubvumbi-07-2022