Olyvinyl chloride, feem ntau hu ua PVC, yog qhov thib peb-feem ntau-widely tsim hluavtaws polymer, tom qab polyethylene thiab polypropylene.PVC yog ib feem ntawm vinyls saw, uas kuj muaj EDC thiab VCM.PVC resin qib tuaj yeem siv rau kev siv tawv thiab hloov tau yooj yim;nruj yog qhov tseem ceeb ntawm cov neeg siv khoom, tab sis nyob rau hauv qhov chaw ntawm ob qho tib si nyob ze dua.Feem ntau ntawm cov tawv PVC yog siv ntau hauv kev tsim kho kev lag luam rau cov yeeb nkab thiab fittings xws li cov dej khib nyiab (DWV) yeeb nkab, cov kav dej, cov kav dej, cov kav dej (hluav taws xob, kev sib txuas lus), thiab cov kav dej.Rigid qib ntawm PVC kuj tseem nyob rau hauv lub tsev thiab vaj tsev lag luam rau cov ntaub ntawv profile xws li lub qhov rooj, qhov rais thav duab, laj kab, decking, khoom kim heev vinyl vuas.Ib lub ntim me me ntawm cov tawv PVC yog tsim rau lub raj mis, lwm yam ntim khoom tsis yog khoom noj, thiab daim npav rho nyiaj.PVC resin tuaj yeem siv rau hauv daim ntawv thov hloov tau los ntawm kev ntxiv cov yas yas.Nyob rau hauv daim ntawv no, nws kuj yog siv nyob rau hauv cov hlau thiab cable rwb thaiv tsev, imitation tawv, signage, inflatable khoom, vov tsev daim nyias nyias, thiab ntau daim ntawv thov nyob rau hauv uas nws hloov cov roj hmab.Qhov ntau yam zoo, nrog rau cov yam ntxwv zoo li durability, nonflammable, tsis kam mus rau tshuaj thiab roj, mechanical stability, thiab yooj yim ntawm kev ua thiab molding, qhia tau hais tias PVC tseem yog ib tug kev sib tw thiab txaus nyiam kev xaiv rau ntau yam kev siv nyob rau hauv kev tsim kho thiab infrastructure, kev ua liaj ua teb, hluav taws xob khoom. , thiab kev lag luam kho mob.Yog li ntawd, PVC yuav nyob twj ywm ib qho tseem ceeb thermoplastic nyob rau lub sij hawm ntev.
Txij li thaum kev tsim kho kev lag luam ua lub luag haujlwm tseem ceeb hauv kev ua lag luam PVC, qhov kev thov rau PVC yog zoo sib xws rau lub ntiaj teb GDP kev loj hlob thiab kev loj hlob ntawm kev lag luam.Kev siv zog ntawm PVC feem ntau yog ntau dua nyob rau hauv cov kev lag luam loj hlob hauv Asia, xws li Tuam Tshoj av loj, Is Nrias teb, Pakistan, Nyab Laj, thiab Indonesia.Cov neeg tsav tsheb feem ntau ntawm PVC noj rau cov chaw xav tau siab suav nrog cov pej xeem coob nrog kev nyab xeeb kev nom kev tswv uas tseem xav tau kev siv nyiaj ntau rau kev tsim kho vaj tse.Lwm qhov tseem ceeb yog qhov loj thiab theem ntawm kev loj hlob ntawm lub teb chaws txoj kev ua liaj ua teb.Piv txwv li, Is Nrias teb xav tau cov tshuab tseem ceeb los tso dej rau nws cov liaj teb, muaj qhov xav tau loj, ruaj khov rau PVC kav thiab fittings.Feem ntau, kev loj hlob ntawm tus nqi yuav zoo li me me hauv kev lag luam tsim kho raws li cov tsev thiab cov kev tsim kho vaj tse tau tsim.
Daim ntawv qhia ncuav qab zib qhia tau hais tias lub ntiaj teb noj ntawm PVC:
Kev lag luam vinyls yog kev lag luam paub tab nrog keeb kwm ntev.Technology, ntau lawm ntim, ib puag ncig hneev taw, thiab tus nqi, tau txhim kho lub sijhawm nrog kev hloov kho hauv kev nyab xeeb thiab cov khoom zoo.Kev tsim kho thev naus laus zis txuas ntxiv tshwm sim thiab tsom mus rau kev sib tw nqi, vim tias cov khoom siv yas yog kev lag luam thoob ntiaj teb tiag tiag, thiab cov tuam txhab tsim khoom yuav tsum muaj kev sib tw ob qho tib si hauv lawv cheeb tsam thiab thoob plaws ntiaj teb.
PVC ntau lawm feem ntau yog raws li ethylene feedstock, tshwj tsis yog Tuam Tshoj mainland, qhov twg acetylene feedstock dominates.Hauv cov txheej txheem ethylene, EDC yog tsim los ntawm chlorination ncaj qha los ntawm cov tshuaj chlorine thiab ethylene.Hauv kauj ruam tom ntej, nws tau tawg los tsim VCM.Kev tsim cov VCM kuj ua rau kev tso tawm los ntawm cov khoom siv hydrogen chloride, uas feem ntau yog siv los tsim EDC ntau dua los ntawm oxychlorination nrog cov ethylene ntxiv.Tom qab ntawd VCM yog polymerized los tsim PVC.Hauv cov txheej txheem acetylene, txawm li cas los xij, tsis muaj cov kauj ruam EDC koom nrog;Hloov chaw, VCM yog tsim ncaj qha los ntawm acetylene.Tuam Tshoj Mainland tam sim no tsuas yog kev lag luam nrog loj acetylene-based PVC chaw;Txawm li cas los xij, vim tias qhov ntsuas ntawm kev lag luam hauv Suav teb loj, txoj kev acetylene tseem suav nrog ib feem tseem ceeb ntawm tag nrho lub ntiaj teb PVC muaj peev xwm.
Post lub sij hawm: Apr-07-2022