This paper presents the results of study on crosslinking of rigid poly(vinyl chloride) (PVC) by 1,1-di-(t-amylperoxy) cyclohexane (DAPC) in the presence of trimethylolpropane trimethacrylate (TMPTMA). Gel content of the PVC samples is increased with increasing concentration of TMPTMA and peroxide DAPC. Ultimate tensile strength (UTS) of the PVC samples is rised with increasing concentration of TMPTMA. Maximum UTS of the PVC samples is achieved with phr peroxide DAPC for every investigated concentration of TMPTMA. Formation of TMPTMA network, crosslinking and grafting of PVC chain radicals on to TMPTMA network are able to improve the gel content, UTS at low - and elevated temperatures and modulus of rigid PVC material.
