Dynamic loss energy measurement of tire cord adhesion to rubber

Abstract

synopsisThe dynamic loss energy measurements for characterizing adhesion using Vibron DDV-I1 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(ethy1ene terephthalate) tire cord with two adhesive systems. The d e gree of adhesion (adhesion factor) was obtained as the energy dissipation at the tire cordto-rubber interface as measured by dynamic testing. It was shown that energy dissipation is increased at the filamentrmatrix 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.

Bio‐composites for structural applications: Poly‐l‐lactide reinforced with long sisal fiber bundles

“…Figure also shows the tangent construction for the determination of the onset glass transition temperature ( T eig ). Murayama and Lawton characterized fiber to matrix adhesion using dynamic mechanical measurements and related the energy dissipation (tan δ) to poor fiber to matrix adhesion . Composites with good fiber to matrix adhesion tend to dissipate less energy compared to the ones with poor interfacial adhesion .…”

“…Murayama and Lawton characterized fiber to matrix adhesion using dynamic mechanical measurements and related the energy dissipation (tan d) to poor fiber to matrix adhesion. 50 Composites with good fiber to matrix adhesion tend to dissipate less energy compared to the ones with poor interfacial adhesion. 51 The damping peak of the composites reinforced with untreated sisal fibers was lower com-pared to the neat polylactide and its maximum was shifted to lower temperatures (Figure 9).…”

Effects of interface on the dynamic mechanical properties of PET/nylon 6 bicomponent fibers

“…By measuring the total system energy dissipation in terms of tan ␦ and knowing tan ␦ PET , tan ␦ nylon 6 , and the storage moduli (EЈ PET , EЈ nylon 6 ) of the components as well as the volume fractions, the internal energy dissipation due to the poor adhesion of interface can be calculated, and it is called the adhesion factor, tan ␦ adh . 17 The adhesion factor (tan ␦ adh ) has been applied to the estimation of the effects of interface on the dynamic mechanical properties and the crystalline structure of the bicomponent fibers. The adhesion factors of the bicomponent fibers as a function of the temperature are demonstrated in Figures 13 and 14.…”

Study on temperature dependence of loss function in a model cord–adhesive–rubber system

“…Murayama and Lawton [6] postulated that the H-pull test method was not particularly sensitive to the rheological properties of the bonded interface. In a recent paper [15], we added a heat stage to fatigue test method and evaluated adhesion at elevated temperatures.…”