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

摘要

Energy dissipation(loss function)measurements for characterizing adhesion using the H-pull test have been applied to the tire cord/rubber composite system and the relationship between the loss function and test temperature was also investigated.Test samples consisted of commercial nylon 66 tire cord,commercial resorcinol-formaldehyde-latex(RFL)adhesive system and NR/SBR rubber compound.The H-adhesion of cord/rubber samples decreased with increasing test temperature.The surface tensions of RFL-coated cord and rubber were determined using Young and Fowkes equations.Also the interfacial tension was determined using the harmonic-mean equation.Then the thermodynamic work of adhesion(W)was determined using these data.Finally the loss function(phi)of the adhesive was determined using the Gent equation When the cord-rubber interface was heated,the loss function decreased.We have proposed a Weibull model equation which describes the temperature dependence of the loss function in a model cord/RFL/rubber system.