Introductory remarks on nanodielectrics

Frechette, M.; Trudeau, Michel L.; Alamdari, Houshang; Boily, S.

doi:10.1109/ceidp.2001.963496

Cited by 86 publications

(37 citation statements)

References 15 publications

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“…Nanodielectrics, defined as composites containing nanofillers (i.e., fillers with at least one dimension less than 100 nm) embedded in a dielectric matrix (e.g., a polymer), have great potential for serving this purpose as they can present superior dielectric properties compared to conventional dielectrics and dielectric microcomposites [4][5][6][7][8][9][10][11]. XLPE-based nanodielectrics containing silica nanoparticles can present improvements in several key dielectric properties over neat XLPE, such as increased dielectric breakdown strength, enhanced voltage endurance, enhanced partial-discharge resistance and reduced space charge accumulation [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Polyethylene-Based Dielectric Composites Containing Polyhedral Oligomeric SilSesquioxanes Obtained by Ball Milling

Guo¹,

Fréchette²,

David³

et al. 2015

Transactions on Electrical and Electronic Materials

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High-energy ball milling was tested as a method for producing Ultra High Molecular Weight Polyethylene (UHMWPE)-based nanodielectrics containing 1 wt% and 5 wt% OctaIsoButylPOSS (OibPOSS). Qualitative and quantitative evaluations were used to explore the compatibility between OibPOSS and PE. Several ball milling variables were optimized in a bid to achieve UHMWPE/OibPOSS nanodielectrics. The morphology, as well as the thermal and the dielectric properties of the samples, were characterized by scanning electron microscopy, thermogravimetric analysis, broadband dielectric spectroscopy, and progressive-stress breakdown tests. The results showed that (i) ball milling was an effective method for producing UHMWPE/OibPOSS dielectric composites, but appeared ineffective in dispersing OibPOSS at the nanoscale, and (ii) the resulting UHMWPE/OibPOSS dielectric composites presented thermal and dielectric properties similar to those of neat UHMWPE.

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Section: Introductionmentioning

confidence: 99%

Polyethylene-Based Dielectric Composites Containing Polyhedral Oligomeric SilSesquioxanes Obtained by Ball Milling

Guo¹,

Fréchette²,

David³

et al. 2015

Transactions on Electrical and Electronic Materials

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“…Adding pure dielectric or magnetic fillers to a polymer matrix is a possible way to change the material electromagnetic properties and performance [6]. Despite many successful experimental testing carried out in this direction [7][8][9], there is still a lack of knowledge in the comprehension of the mechanism of e.m. absorption in material. An extended study of current available literature bring to conclude that an exhaustive comprehension of these phenomena cannot be regardless of a correlation between material microstructure and em properties [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect of carbon nanofibres dispersion on the microwave absorbing properties of CNF/epoxy composites

Nanni

Travaglia

Valentini

2009

Composites Science and Technology

182

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“…Furthermore there are good theoretical reasons why the pursuit of nanomaterials for dielectric applications may have particular promise. Some of these have been reviewed by Lewis [1] and Fréchette [2]. While the technology of 'nanodielectrics' is in its infancy, one may speculate that it will be possible to self-assemble nanodielectrics by providing chemical structures with 'hooks' that provide preferential attachment points for the nanostructured materials, allowing automatic and predictable self-assembly.…”

Section: Introductionmentioning

confidence: 99%

Internal charge behaviour of nanocomposites

Nelson¹,

Fothergill²

2004

Nanotechnology

484

304

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The incorporation of 23 nm titanium dioxide nanoparticles into an epoxy matrix to form a nanocomposite structure is described. It is shown that the use of nanometric particles results in a substantial change in the behaviour of the composite, which can be traced to the mitigation of internal charge when a comparison is made with conventional TiO 2 fillers. A variety of diagnostic techniques (including dielectric spectroscopy, electroluminescence, thermally stimulated current and photoluminescence) have been used to augment pulsed electro-acoustic space charge measurement to provide a basis for understanding the underlying physics of the phenomenon. It would appear that, when the size of the inclusions becomes small enough, they act cooperatively with the host structure and cease to exhibit interfacial properties, leading to Maxwell-Wagner polarization. It is postulated that the particles are surrounded by high charge concentrations in the Gouy-Chapman-Stern layer. Since nanoparticles have very high specific areas, these regions allow limited charge percolation through nano-filled dielectrics.The practical consequences of this have also been explored in terms of the electric strength exhibited. It would appear that there was a window in which real advantages accrue from the nano-formulated material. An optimum loading of about 10% (by weight) is indicated.

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Introductory remarks on nanodielectrics

Cited by 86 publications

References 15 publications

Polyethylene-Based Dielectric Composites Containing Polyhedral Oligomeric SilSesquioxanes Obtained by Ball Milling

Polyethylene-Based Dielectric Composites Containing Polyhedral Oligomeric SilSesquioxanes Obtained by Ball Milling

Effect of carbon nanofibres dispersion on the microwave absorbing properties of CNF/epoxy composites

Internal charge behaviour of nanocomposites

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