Insight into effect of hydrothermal preparation process of nanofillers on dielectric, creep and electromechanical performance of polyurethane dielectric elastomer/reduced graphene oxide composites

Chen, Tian; Zhao, Yanchao; Pan, Lifeng; Lin, Minchao

doi:10.1007/s10854-015-3703-y

Cited by 14 publications

(7 citation statements)

References 27 publications

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“…). The dielectric constant of the composites is much higher at lower frequencies than at higher frequencies, similar to our findings for functionalized carbon nanotubes (CNT)‐polymer composites , as well as for graphene‐ and GO‐polymer composites reported by other groups . This observation has been attributed to the setting up of large number of polymer‐filler interfaces, which block the charge carriers – as substantiated by SEM and TEM (Fig.…”

Section: Resultssupporting

confidence: 91%

Fabrication of graphene oxide and hyperbranched polyurethane composite via in situ polymerization with improved mechanical and dielectric properties

et al. 2017

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Herein, we report a simple and one‐pot route for the synthesis of graphene oxide (GO)/hyperbranched polyurethane (HBPU) composite by in situ polymerization technique. The polyurethane (PU) chains formed covalent linkages with the exposed hydroxyl and carboxylic acid groups on the GO. The composite was characterized by optical microscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), nuclear magnetic resonance (NMR) spectroscopy, and infrared (IR) spectroscopy. The characterization results revealed that the GO sheets were well dispersed within the HBPU matrix, resulting in very good enhancement in tensile strength and Young's modulus of the composites. Differential scanning calorimetry (DSC) suggests that the GO has a nucleating effect for the HBPU. The composites also show a mild increase in stability towards thermal degradation, and significantly, higher dielectric constant compared with neat HBPU at low frequencies. POLYM. COMPOS., 39:2765–2770, 2018. © 2017 Society of Plastics Engineers

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Section: Resultssupporting

confidence: 91%

Fabrication of graphene oxide and hyperbranched polyurethane composite via in situ polymerization with improved mechanical and dielectric properties

et al. 2017

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“…For most dielectric polymers, E b is in the range 10 6 -10 8 V/m. [70][71][72][73][74] Until now, it is still difficult to make a reliable prediction of E b using existing physical models because the E b is not only dependent on the structure but also thickness and morphology of dielectric materials. [69] For the material with same composition, the E b value of thin film is often higher than that of thick one because there is a very small quantity of defects in thin films.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

“…[69] For the material with same composition, the E b value of thin film is often higher than that of thick one because there is a very small quantity of defects in thin films. [73] ) ( r k J o u r n a l P r e -p r o o f…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Polymer-based dielectrics with high permittivity for electric energy storage: A review

et al. 2021

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“…It shows that the dielectric loss of NGM composites is greater than that of conventional DE. [37][38][39] When the volume fraction of rPGM filler is 2%, at a frequency of 1 kHz, the dielectric loss of NGM is approximately equal to 0.05, and the dielectric loss of NGM-2 between 10 4 and 10 6 Hz appears again rising phenomenon, this phenomenon may be related to the elasticity of NR, which is liable to lag under the action of an electric field.…”

Section: Electric Performances Of Ngm Compositesmentioning

confidence: 99%

Influences of porous reduction graphene oxide/molybdenum disulfide as filler on dielectric properties, thermal stability, and mechanical properties of natural rubber

Pan

Wang

Cui

et al. 2021

Vinyl Additive Technology

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A ternary composite system consisting of natural rubber (NR), porous reduced graphene oxide (rPGO), and molybdenum disulfide (MoS 2 ) was introduced for applying in the dielectric field, of which rPGO and MoS 2 hybrid conductive filler (rPGM) was prepared by an effective and environmentally friendly method-microwave reduction. And the well-dispersed NR composites (NGM) were made by the latex co-precipitation method. Due to the large specific surface area of rPGM itself and the synergistic dispersion of rPGO and MoS 2 , it formed many stable interface structures with the NR matrix, which not only made the blend exhibit high elasticity and withstood large deformation as NR but also greatly improved the dielectric, mechanical and thermal stability of the NR matrix. Compared with neat NR, the dielectric constant of nanocomposite increased by 11 times in the presence of rPGM conductive filler, and the leakage current generated by direct contact of fillers was reduced due to the attachment of MoS 2 to the surface of rPGO; when 2% rPGM was added, the NR exhibited the highest tensile strength (21.3 MPa), elongation at break (495%), and abrasion resistance (0.165 cm À3 ); in addition, the thermal stability of the nanocomposite was also improved. These phenomena indicate that rPGM had great potential in conductive fillers and provided a reliable way for NR applications in the field of dielectric elastomers.

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Insight into effect of hydrothermal preparation process of nanofillers on dielectric, creep and electromechanical performance of polyurethane dielectric elastomer/reduced graphene oxide composites

Cited by 14 publications

References 27 publications

Fabrication of graphene oxide and hyperbranched polyurethane composite via in situ polymerization with improved mechanical and dielectric properties

Fabrication of graphene oxide and hyperbranched polyurethane composite via in situ polymerization with improved mechanical and dielectric properties

Polymer-based dielectrics with high permittivity for electric energy storage: A review

Influences of porous reduction graphene oxide/molybdenum disulfide as filler on dielectric properties, thermal stability, and mechanical properties of natural rubber

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