Polyvinyl chloride (PVC) yog ib qho polymerized los ntawm vinyl chloride monomer (VCM) nyob rau hauv peroxide, azo compound thiab lwm yam pib los yog raws li cov dawb radical polymerization mechanism nyob rau hauv qhov kev txiav txim ntawm lub teeb thiab kub. Vinyl chloride homopolymer thiab vinyl chloride copolymer yog sau ua ke hu ua vinyl chloride resin.
PVC yog ib zaug lub ntiaj teb loj tshaj plaws-lub hom phiaj yas, uas tau siv dav. Nws yog dav siv hauv cov khoom siv hauv tsev, cov khoom lag luam, cov khoom siv niaj hnub, cov tawv tawv hauv pem teb, cov vuas hauv pem teb, tawv tawv, cov kav dej, cov xov hlau thiab cables, ntim zaj duab xis, lub raj mis, cov ntaub ntawv foaming, sealing cov ntaub ntawv, fibers thiab lwm yam.
Raws li qhov sib txawv ntawm daim ntawv thov, PVC tuaj yeem muab faib ua: dav dav PVC cob, qib siab ntawm polymerization PVC resin thiab cross-linked PVC cob. Lub hom phiaj ntawm PVC cob yog tsim los ntawm polymerization ntawm vinyl chloride monomer nyob rau hauv qhov kev txiav txim ntawm pib; High polymerization degree PVC resin hais txog cov resin polymerized los ntawm kev ntxiv cov saw loj hlob tus neeg sawv cev hauv cov yas chloride monomer polymerization system; Crosslinked PVC resin yog ib tug cob polymerized los ntawm kev ntxiv crosslinking tus neeg saib xyuas uas muaj cov diene thiab polyene rau hauv vinyl chloride monomer polymerization system.
Raws li txoj kev tau txais vinyl chloride monomer, nws tuaj yeem muab faib ua calcium carbide method, ethylene method thiab imported (EDC, VCM) monomer method (kev lig kev cai, ethylene method thiab imported monomer method yog collectively hu ua ethylene method).
Post lub sij hawm: May-07-2022