A novel electric elastomer based on starch/transformer oil drop/silicone rubber hybrid

Abstract

ABSTRACT:The electrorheological fluid composed of starch particles and silicone oil/transformer oil was dispersed into 107 silicone rubber, and then two types of electric elastomers were prepared in the absence and presence of a curing electric field, respectively. The storage modules were measured using dynamic mechanical analysis with the round disk compression clamp. The results indicate that the storage modulus sensitivity of electric elastomers composed of pure transformer oil is the highest, that of electric elastomers composed of pure silicone oil takes second place, and that of electric elastomers composed of mixture oil is the smallest. For the given starch concentration, the storage modulus sensitivity attains a maximum value of 3.88 when the mass ratio between the transformer oil and 107 silicone rubber is 1. For the given mass ratio of 1, the effects of starch concentration and the presence or absence of the curing electric field on the storage modulus of electric elastomers were studied. When the starch concentration is 5 wt %, the storage modulus of the elastomer without the electric field (denoted as A-elastomer) is 20.1 kPa, whereas that of the elastomer with the electric field (denoted as B-elastomer) is 101.8 kPa. The storage modulus sensitivity attains a maximum value of 4.07.

Electro-active elastomer composites based on doped titanium dioxide

“…[8][9][10][11][12][13][14][15][16] The possibility to vary the electromechanical characteristics of EREs and their structural stability make them attractive for developing new smart materials with potential applications in the automotive industry, robotics and prosthetic limbs, vibration isolators, building applications and electro-active actuators. [17][18][19][20][21][22][23][24][25] For this purpose, ERE composites containing different inclusions and dispersed in different matrices, PANI/PDMS, 22 PbTiO 3 /AR7, 26 starch/silicone oil/silicone rubber, 27,28 polythiophene/polyisoprene, 29 Pb(Zr 0.5 ,Ti 0.5 )O 3 /acrylic rubber, 30 polydiphenylamine/poly(styrene-block-isoprene-block-styrene), 31 poly(p-phenylene)/acrylic elastomer, 32 or cellulose/BMIMCl gel, 33 have been investigated. These systems exhibited an increase of their electromechanical properties, and, in particular, of their storage modulus sensitivity {(G 0 (E) À G 0 (0))/G 0 (0)}.…”

Dynamic viscoelasticity and phenomenological model of electrorheological elastomers

“…As a result, anisotropic EREs are obtained . Compared with isotropic EREs with randomly dispersed particles, anisotropic EREs present a much more significant ER effect . The mechanism involved in the ER effect of the anisotropic EREs is shown in Figure .…”

Smart Table Tennis Racket with Tunable Stiffness for Diverse Play Styles and Unconventional Technique Training

“…To meet the expectation of more applications, enhancing incremental storage modulus and relative ER effect of EREs is still the way forward, and introduction of anisotropic mesoscopic structure is an effective strategy. [32][33][34][35] Herein, we prepared anisotropic EREs by a pair of designed molds. The anisotropic structure can effectively form interparticle saturation surface polarization by reducing interparticle distance along the electric field direction, which is responsible for the giant electrorheological (GER) effect of EREs under the electric field.…”

“…To meet the expectation of more applications, enhancing incremental storage modulus and relative ER effect of EREs is still the way forward, and introduction of anisotropic mesoscopic structure is an effective strategy. [ 32–35 ]…”