Enhanced dielectric properties and actuated strain of elastomer composites with dopamine-induced surface functionalization

2013 ◽  
Vol 1 (39) ◽  
pp. 12276 ◽  
Author(s):  
Dan Yang ◽  
Ming Tian ◽  
Dongdong Li ◽  
Wencai Wang ◽  
Fengxing Ge ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Surface Functionalization ◽  
Elastomer Composites

Dielectric properties of nanotube reinforced butyl elastomer composites

2009 ◽  
Vol 113 (3) ◽  
pp. 1690-1700 ◽  
Author(s):  
Thi To Nga Dang ◽  
S. P. Mahapatra ◽  
V. Sridhar ◽  
J. K. Kim ◽  
K-J. Kim ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Elastomer Composites

Nanodiamond/Polyimide High Temperature Dielectric Films for Energy Storage Applications

2013 ◽  
Vol 785-786 ◽  
pp. 410-416
Author(s):  
David H. Wang ◽  
Scott P. Fillery ◽  
Michael F. Durstock ◽  
Li Ming Dai ◽  
Richard A. Vaia ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Dielectric Loss ◽  
Benzoic Acid ◽  
Surface Functionalization ◽  
High Energy ◽  
High Energy Density ◽  
Dielectric Films ◽  
Benzoic Acid Derivative ◽  
Energy Storage Applications

CP2 polyimide (prepd. from 6FDA and 1,3-bis (3-aminophenoxy) benzene) was blended with (1-50 wt.%) detonation nanodiamonds (DND, pristine, acetone-washed, and 4-(2,4,6-trimethylphenoxy) benzoic acid-functionalized), and the blends were evaluated as thin films for its potential utility in high-energy-density capacitors that would have stable dielectric properties over a wide temperature range (-55 to 300°C) and at frequencies up to or greater than 100 kHz. Both the dielectric storage and loss increased substantially with DND content. Surface functionalization (with the above benzoic acid derivative) significantly reduced the dielectric loss, while the use of acetone-washed DNDs had no effect on the dielectric loss. DND was also blended with CP2 via in-situ polymerization and found to have little effect on the dielectric properties.

scholarly journals Tuning the dielectric properties of metallic-nanoparticle/elastomer composites by strain

Nanoscale ◽  
2015 ◽  
Vol 7 (10) ◽  
pp. 4566-4571 ◽  
Author(s):  
Patrick Gaiser ◽  
Jonas Binz ◽  
Bruno Gompf ◽  
Audrey Berrier ◽  
Martin Dressel
Keyword(s):  
Dielectric Properties ◽  
Percolation Threshold ◽  
Large Range ◽  
Ag Nanoparticle ◽  
Metallic Nanoparticle ◽  
Elastomer Composites

The dielectric properties of a Ag-nanoparticle/elastomer composite are tuned by strain over a very large range. It is shown, that the percolation threshold can be crossed from the metallic into the insulating region.

Dielectric properties of carbon nanotube/silicone elastomer composites

2009 ◽  
Author(s):  
Zhen Zhang ◽  
Shouhua Sun ◽  
Liwu Liu ◽  
Kai Yu ◽  
Yanju Liu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Dielectric Properties ◽  
Silicone Elastomer ◽  
Elastomer Composites

Electrical and Dielectric Properties of Hydroxylated Carbon Nanotube−Elastomer Composites

2009 ◽  
Vol 113 (41) ◽  
pp. 17626-17629 ◽  
Author(s):  
Ryan R. Kohlmeyer ◽  
Alireza Javadi ◽  
Basudev Pradhan ◽  
Srikanth Pilla ◽  
Kristina Setyowati ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Dielectric Properties ◽  
Electrical And Dielectric Properties ◽  
Elastomer Composites

Thermal, Mechanical and Dielectric Properties of Silicon Carbide/Polyphenylene Sulfide Composites

2014 ◽  
Vol 893 ◽  
pp. 209-212 ◽  
Author(s):  
Jun Wei Gu ◽  
Jun Jun Feng ◽  
Jing Dang ◽  
Hai Lin Li ◽  
Qiu Yu Zhang
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Dielectric Properties ◽  
Ball Milling ◽  
Surface Functionalization ◽  
Compression Molding ◽  
Polyphenylene Sulfide ◽  
Molding Method ◽  
Heat Resistant ◽  
Mechanical Ball Milling

The functionalized silicon carbide (SiC) fillers are employed to fabricate silicon carbide/polyphenylene sulfide (PPS) composites by mechanical ball milling-compression molding method. The thermal conductive coefficient of the SiC/PPS composites with 40 wt% functionalized SiC is 0.934 W/ mK, 4 times higher than that of the original PPS. The mechanical properties of SiC/PPS composites are optimal with 5 wt% addition of SiC. Both the heat resistant and dielectric properties of the SiC/PPS composites are increased with the increasing addition of SiC. For a given SiC loading, the surface functionalization of SiC can improve the thermal conductivities and mechanical properties of the SiC/PPS composites simultaneously.

The Overall Elastic Dielectric Properties of Fiber-Strengthened/Weakened Elastomers

2015 ◽  
Vol 82 (11) ◽  
Author(s):  
Victor Lefèvre ◽  
Oscar Lopez-Pamies
Keyword(s):  
Dielectric Properties ◽  
Volume Fraction ◽  
Exact Analytical Solution ◽  
Closed Form Solution ◽  
Dielectric Elastomer ◽  
Form Solution ◽  
Dielectric Elastomers ◽  
Filler Materials ◽  
Elastomer Composites ◽  
Elastic Dielectric

By employing recent results (Lopez-Pamies, O., 2014, “Elastic Dielectric Composites: Theory and Application to Particle-Filled Ideal Dielectrics,” J. Mech. Phys. Solids, 64, p. 6182 and Spinelli, S. A., Lefèvre, V., and Lopez-Pamies, O., “Dielectric Elastomer Composites: A General Closed-Form Solution in the Small-Deformation Limit,” J. Mech. Phys. Solids, 83, pp. 263–284.) on the homogenization problem of dielectric elastomer composites, an approximate solution is generated for the overall elastic dielectric response of elastomers filled with a transversely isotropic distribution of aligned spheroidal particles in the classical limit of small deformations and moderate electric fields. The solution for such a type of dielectric elastomer composites is characterized by 13 (five elastic, two dielectric, and six electrostrictive) effective constants. Explicit formulae are worked out for these constants directly in terms of the elastic dielectric properties of the underlying elastomer and the filler particles, as well as the volume fraction, orientation, and aspect ratio of the particles. As a first application of the solution, with the objective of gaining insight into the effect that the addition of anisotropic fillers can have on the electromechanical properties of elastomers, sample results are presented for the case of elastomers filled with aligned cylindrical fibers. These results are confronted to a separate exact analytical solution for an assemblage of differential coated cylinders (DCC), wherein the fibers are polydisperse in size, and to full-field simulations of dielectric elastomer composites with cylindrical fibers of monodisperse size. These results serve to shed light on the recent experimental findings concerning the dielectric elastomers filled with mechanically stiff fibers. Moreover, they serve to reveal that high-permittivity liquid-like or vacuous fibers—two classes of filler materials yet to be explored experimentally—have the potential to significantly enhance the electrostriction capabilities of dielectric elastomers.

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