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Tšebeliso ea lefatše ea PVC

Olyvinyl chloride, eo hangata e tsejoang e le PVC, ke polymer ea maiketsetso ea boraro e hlahisoang ka bongata, kamora polyethylene le polypropylene.PVC ke karolo ea ketane ea vinyls, eo hape e nang le EDC le VCM.Limaraka tsa PVC tsa resin li ka sebelisoa bakeng sa lits'ebetso tse thata le tse tenyetsehang;rigid e lula e le moreki ea ka sehloohong, empa likarolo tse peli li hokahane haufi.Boholo ba PVC e thata e sebelisoa haholo indastering ea kaho bakeng sa liphaephe le lisebelisoa tse kang peipi ea drain-waste-vent (DWV), pompo ea likhoerekhoere, peipi ea metsi, conduit (motlakase, likhokahano) le lipeipi tsa ho nosetsa.Limaraka tse thata tsa PVC li boetse li le mebarakeng ea meaho le ea matlo bakeng sa lits'ebetso tsa boemo bo botle joalo ka mamati, liforeimi tsa lifensetere, terata, lithaelese, lithaelese tsa vinyl tse majabajaba.Palo e nyane haholo ea PVC e thata e etselitsoe libotlolo, liphutheloana tse ling tseo e seng tsa lijo, le likarete tsa mokoloto.Resin ea PVC e ka sebelisoa lits'ebetsong tse tenyetsehang ka ho eketsoa ha li-plasticizers.Ka foromo ena, e boetse e sebelisoa ho kenya terata le lithapo, letlalo la ho etsisa, matšoao, lihlahisoa tse nang le inflatable, lera la marulelo, le lisebelisoa tse ngata moo e nkelang rabara sebaka.Monyetla ona o feto-fetohang, hammoho le litšobotsi tse kang ho tšoarella, ho se chese, ho hanyetsa lik'hemik'hale le oli, botsitso ba mochine, le boiketlo ba ho sebetsa le ho bopa, li bontša hore PVC e ntse e le khetho ea tlhōlisano le e khahlehang bakeng sa likopo tse ngata mohahong le meahong, temo, lihlahisoa tsa motlakase. , le liindasteri tsa tlhokomelo ea bophelo.Kahoo, PVC e tla lula e le thermoplastic ea bohlokoa ka nako e telele.

Kaha indasteri ea kaho e bapala karolo ea bohlokoa 'marakeng oa PVC, tlhoko ea PVC e hokahane haholo le kholo ea Palo ea Lefatše le nts'etsopele ea moruo.Tšebeliso e matla ea PVC hangata e tsepame haholo linaheng tse tsoelang pele moruong oa Asia, joalo ka naha ea China, India, Pakistan, Vietnam le Indonesia.Bakhanni ba tloaelehileng ba tšebeliso ea PVC bakeng sa libaka tse batloang haholo ba kenyelletsa palo e kholo ea baahi ba nang le boemo bo tsitsitseng ba lipolotiki bo ntseng bo hloka chelete e ngata holima litšebeletso tsa motheo.Taba e ‘ngoe ke boholo le mohato oa tsoelopele ea lekala la temo ea naha.India, mohlala, e hloka lits'ebetso tse kholo tsa ho nosetsa masimo a eona, e na le tlhoko e kholo, e tsitsitseng ea liphaephe le lisebelisoa tsa PVC.Ka kakaretso, sekhahla sa kholo se tla batla se itekanetse moruong o tsoetseng pele kaha meaho le meralo ea motheo e se e thehiloe.

Chate e latelang ea pie e bonts'a tšebeliso ea lefatše ea PVC:

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Indasteri ea li-vinyls ke lekala le holileng le nang le nalane e telele.Theknoloji, bophahamo ba tlhahiso, sebaka sa tikoloho, le litšenyehelo, li ntlafetse ha nako e ntse e ea ka ntlafatso ea polokeho le boleng ba sehlahisoa.Boqapi ba theknoloji bo ntse bo tsoela pele ho ba teng 'me bo shebane haholo le tlholisano ea litšenyehelo, kaha tlhahiso ea vinyl ke khoebo ea lefats'e e le kannete, mme bahlahisi ba tlameha ho ba le tlholisano ka har'a libaka tsa bona le lefats'e ka bophara.

Tlhahiso ea PVC hangata e thehiloe ho ethylene feedstock, ntle le naha ea China, moo lihlahisoa tsa acetylene li busang.Ts'ebetsong ea ethylene, EDC e hlahisoa ka chlorination e tobileng ho tloha chlorine le ethylene.Ka mohato o latelang, e robehile ho hlahisa VCM.Tlhahiso ea VCM e boetse e fella ka ho lokolloa ha sehlahisoa sa hydrogen chloride, eo ka tloaelo e sebelisoang hape ho hlahisa EDC e eketsehileng ka oxychlorination e nang le ethylene e eketsehileng.VCM e ntan'o etsoa polymerized ho hlahisa PVC.Leha ho le joalo, ts'ebetsong ea acetylene, ha ho na mohato oa EDC o amehang;ho e-na le hoo, VCM e hlahisoa ka ho toba ho tloha acetylene.Hona joale Mainland China ke eona feela 'maraka o nang le lisebelisoa tse kholo tsa PVC tse thehiloeng ho acetylene;leha ho le joalo, ka lebaka la boholo ba indasteri ea naha ea Chaena, tsela ea acetylene e ntse e ikarabella bakeng sa karolo e kholo ea matla a PVC lefatšeng ka bophara.


Nako ea poso: Apr-07-2022