STUDIES ON THE HIGH POLYMERIC MECHANICAL DAMPING MATERIAL——THE EFFECT OF FILLERS ON MECHANICAL DAMPING OF CHLORINATED BUTYL RUBBER

This paper presents our study on the effect of fillers on mechanical damping of chlorinated butyl rubber above its glass transition temperature, Tg. In the temperature range of TgT-36℃, the loss factor of filled rubber decreased as the effective volume fraction of rubber in the filled rubber was decreased. At temperatures T -36℃, the effect of interaction between rubber and fillers on mechanical damping of chlorinated butyl rubber was studied and discussed in terms of several parameters such as the content of combined rubber absorbed on the surface of fillers, surface area of fillers, the interfacial functionψ, and the surface area of fillers occupied by rubber of unit weight.The effect of interfiller friction on mechanical damping of the filled ruber was described with the parameters ψ and φ. φ is the volume fraction of fillers.It is shown by the results that when the content of the fillers is low, the mechanical damping of filled rubber depends on the interaction between the fillers and rubber.On the other hand, the mechanical damping of the filled rubber was improved notably by the friction between the filler particles.