1, Kev ua tau zoo thiab kev siv ntawm PVDC:
Kev lag luam yas thoob ntiaj teb yog siv los siv lub cev kom muaj nuj nqis ntawm permeability los qhia qhov txawv ntawm kev ua tau zoo thiab cov khoom siv nrog oxygen permeability qis dua 10 yog hu uasiab barrier khoom.10 ~ 100 yog hu ua cov khoom nruab nrab barrier.Ntau tshaj 100 yog hu ua cov khoom siv barrier zoo tib yam.Tam sim no, peb tau lees paubsiab barrier khoomnyob rau hauv lub ntiaj teb no yog PVDC, EVOH thiab PAN.Peb cov ntaub ntawv yog tag nrho cov copolymer.Oxygen barrier ntawm EVOH zoo dua li ntawm PVDC thiab PVDC zoo dua li ntawm PAN;Rau dej vapor barrier, EVOH zoo dua PVDC, thiab PVDC zoo dua PAN.Txawm li cas los xij, nyob rau hauv cov av noo siab, EVOH cov qauv molecular muaj - OH pawg, uas yooj yim heev rau nqus dej noo, thiab nws cov kev ua haujlwm tsis zoo yuav txo qis.Nyob rau tib lub sijhawm, qhov thaiv kev ua haujlwm ntawm cov khoom siv PAN kuj tseem txo qis nrog qhov nce ntawm cov av noo ib puag ncig.PVDC yog qhov zoo tshaj plaws kev thaiv kev ua haujlwm ntawmcov khoom ntim yashauv ntiaj teb no.
Polyvinylidene chloride resin (PVDC) yog copolymer nrog vinylidene chloride monomer ua lub ntsiab tivthaiv.Nws yog cov khoom ntim zoo tshaj plaws nrog kev thaiv siab, muaj zog toughness, zoo heev thermal shrinkage thiab tshuaj stability thiab zoo heev printing thiab kub-sealing zog.Nws yog dav siv hauv zaub mov, tshuaj, tub rog thiab lwm yam kev lag luam.
Kev tsim kho PVDC cov khoom lag luam nrog cov ntsiab lus thev naus laus zis yog qhov tseem ceeb rau kev sib npaug ntawm cov khoom siv tshuaj chlorine hauv kev lag luam chlor-alkali thiab txhim kho kev lag luam zoo thiab kev sib tw.PVDC muaj cov khoom thaiv zoo heev ua cov khoom ntim khoom.Siv PVDC los ntim cov zaub mov tuaj yeem txuas ntxiv lub neej txee, thiab tib lub sijhawm, nws muaj kev tiv thaiv zoo heev ntawm cov xim, tsw thiab saj ntawm cov zaub mov.PVDC composite ntim tau qis dua cov peev txheej siv dua li qub PE zaj duab xis, ntawv, ntoo,aluminium ntawv cithiab lwm yam khoom ntim.Lub ntim ntawm ntim cov khib nyiab tau raug txo qis heev thiab tag nrho cov nqi tau raug txo, kom ua tiav lub hom phiaj ntawm kev ntim khoom txo.
PVDC tau siv dav hauv cov tebchaws sab hnub poob, suav nrog zaub mov, tshuaj, tshuaj pleev ib ce, tshuaj, khoom siv kho vajtse thiab cov khoom siv tshuab, thiab paub tias yog "ntsuab" cov khoom ntim.Daim ntawv thov ntawm PVDC muaj feem cuam tshuam nrog kev ua neej nyob hauv lub tebchaws.Tam sim no, kev noj txhua xyoo ntawm PVDC yog kwv yees li 50000 tons hauv Asmeskas & 45000 tons hauv Tebchaws Europe, thiab tag nrho txog 40000 tons hauv Asia thiab Australia.Qhov nruab nrab txhua xyoo kev loj hlob ntawm PVDC kev lag luam noj hauv Europe, America thiab Nyiv yog 10%.Hauv Asmeskas, ntau tshaj 15000 tons ntawm PVDC resin yog siv raulub tshuab nqus tsev ntimntawm cov nqaij tshiab tshiab txhua xyoo, thiab kev noj PVDC txheej ntawm daim ntawv suav txog 40% ntawm tag nrho cov khoom siv ntawm PVDC.Hauv Nyij Pooj thiab Kaus Lim Qab Teb, ntau cov khoom ntim PVDC yog siv rau hauv cov khoom noj, tshuaj, tshuaj lom neeg thiab cov khoom siv hluav taws xob ntim khoom.Kev noj txhua xyoo ntawm PVDC resin yog ntau tshaj 10000 tons tsuas yog rau cov yeeb yaj kiab yas.
Post lub sij hawm: May-22-2023