Dynamic loss energy measurement of tire cord adhesion to rubber

Abstract

Abstract The dynamic loss energy measurements for characterizing adhesion using Vibron DDV‐II have been applied to the tire cord–rubber composite system, and the relationships between these dynamic measurements and static adhesion test (H‐block pull test and strip peeling test) were also investigated. Tested samples were the commercial nylon 66 tire cord and poly(ethylene terephthalate) tire cord with two adhesive systems. The degree of adhesion (adhesion factor) was obtained as the energy dissipation at the tire cord‐to‐rubber interface as measured by dynamic testing. It was shown that energy dissipation is increased at the filament–matrix interface when the composite is subjected to continuous cyclic loading if a condition of poor adhesion exists. The test was based upon the separation of the total energy dissipation in a composite under cyclic loading into a portion associated with viscous properties of the constituent materials and a second portion resulting from the lack of perfect bonding in the interfacial regions. The strip peeling measurement of adhesion exhibited an approximately linear correlation with the dynamic loss energy measurement of adhesion. The dynamic energy loss measurement is suggested as a potential source of information on the rheological characteristics of the interfacial region of bonding.