Daim Ntawv Thov Ntawm Pvdc Thiab Kev Ua Lag Luam Prospect
pvdc txoj kev loj hlob Thaum pvdc tau pib ua ntej, nws tau ua tiav rau hauv cov yeeb yaj kiab sib xyaw thiab siv rau hauv ntim riam phom thiab mos txwv thaum Tsov Rog Ntiaj Teb Zaum II. Lub ntiaj teb thawj linear polymer pvdc tau los ntawm kev sim polymerization yog nyob rau hauv 1930. American Dow Chemical Company thawj industrialized nws. Vim hais tias lub sij hawm pib coincided nrog "Lub Ntiaj Teb Tsov Rog II" thiab feem ntau yog siv nyob rau hauv cov tub rog ntim, uas muab ib txheej ntawm kev paub tsis meej rau lub pvdc industrial technology, thiab yog li ntawd los ua lub tebchaws United States dow tshuaj lub tuam txhab rau ntau xyoo tsis txhob declassify, tsis txhob hloov ib tug. industrial technology.
Thaum kawg ntawm 50s thiab pib ntawm lub 60s, nws tau maj mam hloov mus rau lub ntim khoom noj, thiab ces maj mam thov mus rau lub teb ntawm kev ntim tshuaj, thiab lwm yam. Nrog rau acceleration ntawm niaj hnub ntim tshuab thiab lub pace ntawm niaj hnub lub neej, muaj koob meej. ntawm microwave ncu thiab tub yees, tus nqi ntawm cling zaj duab xis tau nce sharply, ua rau daim ntawv thov ntawm pvdc nrov. Lub sijhawm no, ntau lub tuam txhab tsim cov cuab yeej siv thev naus laus zis ntawm pvdc cov khoom lag luam, thiab pvdc tau pib mus txog qhov kev loj hlob tag nrho hauv cov tebchaws tsim sab hnub poob. Cov khoom siv hluav taws xob siab tshiab evoh tau tshwm sim hauv xyoo 1980s, vim tias nws cov khoom siv rov ua dua tshiab, ib zaug hem txoj kev loj hlob ntawm pvdc, tab sis vim qhov kev poob qis ntawm kev ua haujlwm ntawm evoh nyob rau hauv cov av noo siab, thiab tsis tuaj yeem txhim kho ntxiv, suav nrog cov nylon biaxially stretched. zaj duab xis, tsis tuaj yeem hloov ntau yam haujlwm zoo ntawm pvdc.
Tom qab xyoo 1990, vim tias lub ntiaj teb kev nkag siab ntawm cov khoom pvdc tau nkag siab ntxiv, yog li nws tau txais kev txhim kho zoo, tshwj xeeb tshaj yog nyob rau hauv Gulf War thaum ntxov 1990s, US cov tub rog khoom noj tag nrho pvdc saj zawg zog ntim, tsis tsuas yog ntim lub teeb thiab ceev, tab sis kuj rau xyuas kom meej tias cov xim yooj yim thiab tsw ntawm cov zaub mov tseem tsis hloov pauv, tshwj xeeb tshaj yog cov pvdc nkaus xwb kom tau raws li Asmeskas tub rog tau thov lub txee lub neej ntawm cov tub rog ntim khoom yuav tsum ncav cuag 3 xyoo qhov kev xav tau no.
Yog li ntawd, daim ntawv thov txheej xwm ntawm pvdc raws li ib tug barrier ntim zaj duab xis tau muab sib sau ua ke thiab tob. Tsoomfwv German tau muab pvdc ntim cov cim ntsuab ntsuab dot, uas yog lub ntim ntsuab tau lees paub los ntawm tsoomfwv. vdc tuaj yeem ua copolymerized nrog ntau hom monomers, tab sis tam sim no tsuas muaj peb hom nrog tus nqi lag luam tiag: Pvdc / pvc, pvdc thiab pvdc / acrylate copolymer.
