ELECTRICAL RESISTIVITY OF A POLYVINYL CHLORIDE-DIBUTYL PHTHALATE PLASTISOL (U)

摘要

Electrical volume resistivity techniques have been employed to study the hardening and properties of a polyvinyl chloride-dibutyl phthalate plastisol. It is show that resistivity measurements can be employed to fallow the hardening of plastisol systems and yield information useful la elucidating the nature of the hardening process. This process appears to occur in two stages. In order to obtain the maximum extent of hardening, it is necessary to conduct the final stage in the hardening process at a temperature above the glass transition temperature of the polymeric component. Elasticized systems exhibit a non-linear dependence of resistivity vs. temperature. For a number of plasticized . polymers a linear relationship is found to exist between the logarithm of the magnitude of the resistivity at 25'C and the activation energy for the electrical conduction process. This relationship is discussed and a possible explanation of its significance is given.