Influence of BaTiO3 on damping and dielectric properties of filled polyurethane/unsaturated polyester resin interpenetrating polymer networks

Increasing the performance of dielectric elastomer actuators: A review from the materials perspective

“…The second strategy has been the use of inorganic fillers of high permittivity values since, in principle, they should increase the dielectric permittivity of a given elastomer while maintaining its dielectric nature. The addition of common inorganic fillers, such as organically modified montmorillonite [135], titanium dioxide TiO2 [136][137][138], BaTiO3 (BT) [139][140][141][142], boron nitride (BN) [143] and lead magnesium niobate-lead titanate Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT) [144], have already shown to be a suitable strategy to improve the dielectric permittivity of a wide range of elastomers (PDMS, PU, SEBS, EVA, among others). One of the first works on this topic showed that the addition of 7.3 vol.% of rutile-type TiO2 to a silicone rubber improved its dielectric properties while reducing its Young's modulus [78].…”

Interlocked CNT networks with high damping and storage modulus

“…The left upright set, which consists of different forms of CNT/polymer composites and BP/polymer composites [11,[32][33][34][35][36], has gradually increasing storage modulus with the damping ratio less than 0.1. The right horizontal set, composed by different viscoelastic polymers [3,4,37,38], has damping ratio larger than 0.3 but extremely low storage modulus, which is typical damping function material. Properties of the reported 3D CNT networks were close to those of IPNs [4,25].…”

Interpenetrating poly(urethane-urea)–polydimethylsiloxane networks designed as active elements in electromechanical transducers

“…This was used as a component to prepare interpenetrated bi-networks with polydimethylsiloxane-α,ωdiols with various molecular masses. Networks interpenetration is a promising technique of preparing materials with broad glass transition temperature (Tg) ranges 16 and offers the possibility of effectively producing advanced multi-component polymeric systems with new property profiles. The mutual entangling forces the compatibilization of the two networks leading to a dual-phase continuous microstructure in systems with synergistic effects.…”