Polyvinylchloride (PVC) [- (- CH 2 -CHCl-) n-] yog ib qho ntawm peb qhov tseem ceeb tshaj plaws polymers tam sim no siv thoob ntiaj teb. Qhov no yog vim hais tias PVC yog ib qho uas pheej yig tshaj plaws polymers kom ua thiab muaj ntau yam khoom siv thiaj li yuav siv tau los ua pua pua khoom. PVC yog tsim los ntawm lub polymerisation ntawm yas chloride (chloroethane) monomer units:
PVC muaj ncov qaumteb qabteb (polar molecules) uas nyiam ua ke los ntawm kev sib tshuam dipole-dipole vim cov yeeb yaj kiab electrostatic ntawm ib chlorine atom nyob rau hauv ib qho molecule mus rau ib lub xaim hydrogen atom:
Cov kev txiav txim siab txog kev sib txuas ntawm intermolecular ntawm polymer chains ua PVC cov khoom haum.
Uncompounded PVC yog tsis muaj xim thiab tsis yeem thiab muaj kev ruaj ntseg tsis zoo ntawm cov cua sov thiab lub teeb. Txawm li cas los xij, kev siv cov additives / stabilizers ua rau peb hloov cov khoom ntawm PVC kom zoo li peb nyiam.
