Damping and Electromechanical Behavior of Ionic-Modified Brominated Poly(isobutylene-<i>co</i>-isoprene) Rubber Containing Petroleum Resin C5

To improve the damping properties of rubbers, organic tackifiers such as hydrocarbon resins, rosin esters, and polyterpenes are often incorporated to increase intermolecular friction rubber, thus increasing energy dissipation (damping) during dynamic loading. However, this is at expense cross-linking density mechanical rubbers. Ionic cross-links introduce unique a combination reinforcement high extensibility, well self-healing damping, thanks reversible ionic association. Hence creating an network would be interesting alternative adding small molecular The association inevitably causes structural instability over time (i.e., creep) or elevated temperatures (ionic transition generally happens 60–80 °C). balance viscoelasticity, stability these materials, we prepared 1-vinyl imidazole modified brominated poly(isobutylene-co-isoprene) (BIIR) elastomers by solid-state rubber compounding curing processes, investigated effects networks aliphatic petroleum resin (C5) on viscoelastic electromechanical ionic-cross-linked elastomers. We found that can achieved simultaneously with broad effective temperature range through optimizing C5 concentrations. polar clusters also increased dielectric permittivity while maintaining low loss BIIR exhibited actuation harvesting similar those commercial VHB-4910 elastomer under configurations, which provides reprocessability for vibration applications.