The fabrication of dielectric elastomers from silicone rubber and barium titanate: employing equi-biaxial pre-stretch to achieve large deformations

Jiang, Liang; Betts, Anthony; Kennedy, David; Jerrams, Stephen

doi:10.1007/s10853-015-9357-6

Cited by 32 publications

(28 citation statements)

References 50 publications

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“…So the electrical energy conversion to heat energy leads to the actuator strain non-linear increase. More interestingly, the actuated strain at 5 kV/mm obviously increases from 0.3% for pure PDMS to 2.59% for the composites with 60 phr of RGO@SiO 2 , an eightfold increase in the actuated strain, much higher than that of other previously reported DEs [13,[43][44][45][46][47], as summarized in Table 6. The improvement in the actuated strain at low electric fields is in favor of the application of DE in the biological and medical fields (such as synthesis of artificial skin), tactile displays, and braille displays, etc.…”

Section: Electromechanical Properties Of Go@sio 2 /Pdms Compositesmentioning

confidence: 56%

“…The improvement in the actuated strain at low electric fields is in favor of the application of DE in the biological and medical fields (such as synthesis of artificial skin), tactile displays, and braille displays, etc. [47].…”

Section: Electromechanical Properties Of Go@sio 2 /Pdms Compositesmentioning

confidence: 99%

“…[44] 8.0 (8 kV/mm) 0.4 PDVB@PANI/PDMS [43] 16.0 (43 kV/mm) 0.01 Dipoles-PDMS [45] 1.4 (16 kV/mm) <1 TiO 2 -PDMS (plasticized) [46] 18.0 (37 kV/mm) <2.5 SR/BT [47] 57.0 (46 kV/mm) <3 (60 phr)GO@SiO 2 /PDMS in our study 3.9 (15 kV/mm) 3.3…”

Section: Disclosure Statementmentioning

confidence: 99%

See 2 more Smart Citations

Simultaneously improved actuated performance and mechanical strength of silicone elastomer by reduced graphene oxide encapsulated silicon dioxide

Ning

Wang

Zhang

et al. 2015

International Journal of Smart and Nano Materials

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Herein, graphene oxide (GO)-encapsulated silica (SiO 2 ) hybrids (GO@SiO 2 ) were prepared via electrostatic self-assembly of the 3-aminopropyltriethoxysilane (APS)-modified SiO 2 and GO. The as-prepared GO@SiO 2 was introduced into polydimethylsiloxane (PDMS) elastomer to simultaneously increase the dielectric constant (k) and mechanical properties of PDMS. Then, the in situ thermal reduction of GO@SiO 2 / PDMS composites was conducted at 180°C for 2 h to increase the interfacial polarizability of GO@SiO 2 . As a result, the values of k at 1000 Hz are largely improved from 3.2 for PDMS to 13.3 for the reduced GO@SiO 2 (RGO@SiO 2 )/PDMS elastomer. Meanwhile, the dielectric loss of the composites remains low (<0.2 at 1000 Hz). More importantly, the actuated strain at low electric field (5 kV/mm) obviously increases from 0.3% for pure PDMS to 2.59% for the composites with 60 phr of RGO@SiO 2 , an eightfold increase in the actuated strain. In addition, both the tensile strength and elastic modulus are obviously improved by adding 60 phr of RGO@SiO 2 , indicating a good reinforcing effect of RGO@SiO 2 on PDMS. Our goal is to develop a simple and effective way to improve the actuated performance and mechanical strength of the PDMS dielectric elastomer for its wider application.

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Section: Electromechanical Properties Of Go@sio 2 /Pdms Compositesmentioning

confidence: 56%

Section: Electromechanical Properties Of Go@sio 2 /Pdms Compositesmentioning

confidence: 99%

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Simultaneously improved actuated performance and mechanical strength of silicone elastomer by reduced graphene oxide encapsulated silicon dioxide

Ning

Wang

Zhang

et al. 2015

International Journal of Smart and Nano Materials

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“…BT was often selected as the functional filler to filled in polymer matrix to enhance the dielectric constant . Compared with the dielectric ceramics, polymer dielectrics have the following main advantages such as light weight, excellent mechanical properties, and improved processability …”

Section: Introductionmentioning

confidence: 99%

Enhancement of mechanical strength associated with interfacial tension between barium titanate and acrylonitrile–butadiene rubber with different acrylonitrile contents by surface modification

Zhu

Guo

Zhang

2017

J of Applied Polymer Sci

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Acrylonitrile–butadiene rubber (NBR) with different acrylonitrile (ACN) contents was filled with barium titanate (BT) to prepare the polymer dielectrics. The neat NBR, NBR/untreated BT, and NBR/bis‐(γ‐triethoxysilylpropyl)‐tetrasulfide (silane coupling agent KH845‐4) modified BT (MBT) composites were prepared. At low ACN content (ACN content 20 wt %), the tensile strength of the NBR/MBT composites increased by 173.6% from 2.69 to 7.36 MPa compared to the neat NBR. The pleasing results were not found in those composites with high ACN content. Both surface modifications of BT and NBR with low ACN content would result in lower interfacial tension between BT and NBR. A strong interfacial adhesion was observed between MBT and NBR with 20 wt % ACN content. The interfacial adhesion had great contribution to the mechanical strength of composites. Moreover, the dielectric properties of composites were also investigated in detail. The addition of BT enhanced the dielectric constant of composites markedly. This study can be applied in manufacturing electronic devices, which are subjected to oily environments for a long time. At the same time, the study can provide some help for researchers to select the polymer matrix and the appropriate surface modification agent of functional filler. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45936.

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“…Recently, much attention has been paid to dielectric elastomers (DEs) in the field of novel actuators. DEs are a type of electroactive polymer that can deform in an electric field; thereby, they generate stress and convert electrical energy into mechanical energy . DEs have several impressive advantages, including a low cost, large deformation, short response time, and light weight .…”

Section: Introductionmentioning

confidence: 99%

Approach to the fabrication of acrylic elastomer nanocomposites with high dielectric constants

Wang

Zhou

et al. 2016

J of Applied Polymer Sci

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Dielectric elastomers (DEs) are a type of electroactive polymer that can deform in an electric field. The possession of a high dielectric constant is critical for DEs if they are to be suitable materials for the application of actuators. A novel elastomeric nanocomposite (ACE‐g‐CuPc) was fabricated by copper phthalocyanine oligomer (CuPc) grafting directly onto an acrylic elastomer (ACE) backbone. Compared with other synthetic methods, esterification has several advantages; these include fewer impurities and a simpler synthetic route. Transmission electron microscopy showed that the size of the CuPc particles of the ACE‐g‐CuPc was in the range 15–30 nm; this range was significantly smaller than that of ACE/CuPc (500 nm). The results of thermogravimetric analysis show that the thermal stability of the grafting composite was higher than that of the blending composite. At 100 Hz, the dielectric constant of the grafting composite (with 11 wt % CuPc) reached 173 at room temperature. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43904.

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The fabrication of dielectric elastomers from silicone rubber and barium titanate: employing equi-biaxial pre-stretch to achieve large deformations

Cited by 32 publications

References 50 publications

Simultaneously improved actuated performance and mechanical strength of silicone elastomer by reduced graphene oxide encapsulated silicon dioxide

Simultaneously improved actuated performance and mechanical strength of silicone elastomer by reduced graphene oxide encapsulated silicon dioxide

Enhancement of mechanical strength associated with interfacial tension between barium titanate and acrylonitrile–butadiene rubber with different acrylonitrile contents by surface modification

Approach to the fabrication of acrylic elastomer nanocomposites with high dielectric constants

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