Thermodynamic method for investigation of radiation cross-linking of filled oligomer-containing compositions based on polyvinyl chloride

The method of quantitative evaluation of the action of various factors on efficiency of radiation-induced crosslinking of multicomponent PVC-systems is proposed based on application of DTA method of high temperature resolution (ΔT=10-4deg per one degree of the change of process temperature). Influence of oligomer and (or) filler on the character of PVC-compositions crosslinking under the action of 60Co irradiation has been studied. The contributions of oligomer and filler into total heat release during radiation-induced crosslinking and the effect of their interaction have been quantitatively determined. The error of the method is equal to ±2.5%