Surface erosion due to partial discharges on several kinds of epoxy nanocomposites

Kozako, Masahiro; Kuge, S.; Imai, T.; Ozaki, T.; Shimizu, Toshio; Tanaka, Toshikatsu

doi:10.1109/ceidp.2005.1560646

Cited by 43 publications

(23 citation statements)

References 6 publications

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“…Ratio k 4 vs. the permittivity of matrix, (□ from [78], • from [70,81], ▲ from [15,75,77,79], ▼ from [73,74,80] ). [78], ▲ from [15,75,77,79], ▼ from [70,81], ★ from [73,74,80] ). Samples with the size of 60 mm × 60 mm × 1 mm were prepared by in-situ polymerization in [80], unclear in [81].…”

Section: Discussionmentioning

confidence: 99%

“…Nanoparticles were treated in references [15,78,79], others were untreated. The sizes of samples in [75,77,78,79] There are several possible mechanisms to explain the improvement on the PD resistance of nanocomposites, such as the Multi-core Model [13,83], the Skeleton Model (fillers like skeleton dividing matrix into small parts), the Size Effect of Nanoparticles [48], Pile and Rearrangement of Fillers at Surface [77,82], Aggregative State of Space Charge [12,[84][85][86], the Effect of the Field Homogenization and High Thermal Conductivity and Insulation Effect of Fillers [87]. However, the characteristic and function of the region between matrix and fillers are still hard to describe precisely.…”

Section: Properties In Pd Resistance Of Nanodielectricsmentioning

confidence: 99%

“…Al 2 O 3 , MgO, TiO 2 , SiO 2 , SiC, clay and layered silicate are chosen to be fillers [72]. Researchers have tested the PD resistance [73][74][75][76][77][78][79][80][81][82], PD breakdown [73][74][75][76][77][78][79][80][81][82] and PD lifetime [64,82]. Ratio k 4 is the ratio of nanodielectrics to matrix in PD resistance performance.…”

Section: Properties In Pd Resistance Of Nanodielectricsmentioning

confidence: 99%

“…Nanofillers were treated in [67,69,71] while untreated in [65,68]. [15,78], • from [15,76,77,79], ▲ from [15,75,77], ▼ from [77], ★ from [15,75], ◆ from [75] ). Nanoparticles were treated in references [15,78,79], others were untreated.…”

Section: Properties In Pd Resistance Of Nanodielectricsmentioning

confidence: 99%

See 3 more Smart Citations

Short-term breakdown and long-term failure in nanodielectrics: a review

Yin

Chen

et al. 2010

IEEE Trans. Dielect. Electr. Insul.

291

172

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Nanodielectrics, which are concentrated in polymer matrix incorporating nanofillers, have received considerable attention due to their potential benefits as dielectrics. In this paper, short-term breakdown and long-term failure properties of nanodielectrics have been reviewed. The characteristics of polymer matrix, types of nanoparticle and its content, and waveforms of the applied voltage are fully evaluated. In order to effectively comment on the published experimental data, a ratio k has been proposed to compare the electric properties of the nanodielectrics with the matrix and assess the effect for nanoparticles doping. There is evidence that the short-term breakdown properties of nanodielectrics show a strong dependence on the applied voltage waveforms. The polarity and the cohesive energy density (CED) of polymer matrix have a dramatic influence on the properties of nanodielectrics. Nanoparticle doped composites show a positive effect on the long-term failure properties, such as ageing resistance and partial discharge (PD) properties of nanocomposites are superior than microcomposites and the matrix. The larger the dielectric constant and CED of the matrix become, the more significant improvements in long-term performance appear. Based on the reported experimental results, we also present our understandings and propose some suggestions for further work.

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Section: Discussionmentioning

confidence: 99%

Section: Properties In Pd Resistance Of Nanodielectricsmentioning

confidence: 99%

Section: Properties In Pd Resistance Of Nanodielectricsmentioning

confidence: 99%

Section: Properties In Pd Resistance Of Nanodielectricsmentioning

confidence: 99%

See 2 more Smart Citations

Short-term breakdown and long-term failure in nanodielectrics: a review

Yin

Chen

et al. 2010

IEEE Trans. Dielect. Electr. Insul.

291

172

View full text Add to dashboard Cite

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“…Even if nanostructured materials having improved thermal and mechanical properties have been studied for more than a decade, only recently the electrical properties of such materials have been investigated more deeply. A few contributions in literature regard nanostructured insulating materials, showing better endurance to electric stress and a claiming better resistance to surface PD activity [2][3][4][5]. The improvement of thermal and mechanical properties, in fact, seems to be obtained easier than for electric properties.…”

Section: Introductionmentioning

confidence: 97%

Time-evolution of nanostructured epoxy resin degradation due to surface partial discharge activities

Cavallini

Fabiani

Montanari

2007

2007 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena

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This paper deals with the investigation of partial discharge (PD) resistance of some epoxy-resin nanostructured materials. The base material is modified by inorganic nanofillers, i.e., silicates (SiO 2 ) and titanium oxide (TiO 2 ), with different filler content (ranging from 10 to 25 % in weight). Results coming from PD acquisition and surface erosion measurements carried out during aging tests allow some quantities to be extracted, which can be related to surface degradation due to PD.These results show that nanostructured materials, in general, can withstand better PD activity than the base material, particularly the one containing SiO 2 with 10% in weight.

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Tribological and electrical properties of silica‐filled epoxy nanocomposites

Veena¹,

Renukappa²,

Shivakumar³

2011

Polymer Composites

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The tribological and electrical properties of epoxy composites filled with nano‐sized silica particles are studied and discussed in this article. To enhance the interfacial interaction between the fillers and the matrix, nanoparticles were pretreated with silane coupling agent. Dry sliding wear tests were carried out with configuration of composite sample on a rotating steel disc. Electrical measurements such as AC breakdown voltage, at 50 Hz, high voltage‐low current arc resistance and wet tracking resistance were carried out. The results reveal the influence of nanosized silica loading on wear resistance of the epoxy. It is observed that 10 wt% loading of silica is very effective in reducing the wear loss. With further increase of silica filler loading, the nanoparticles agglomerated and resulted in increase of the specific wear rate. The influence of silica particles on the specific wear rate is more pronounced under sliding wear situation. The influence of silica particle loading on epoxy is evident in the results of electrical parameters like dielectric strength, arc resistance and tracking resistance. These parameters showed improvement with filler loading up to 15 wt% and beyond this value of filler loading noticeable deterioration was observed. The effects of electrical stresses in the morphologies of the surfaces of epoxy nanocomposites are discussed. POLYM. COMPOS., 2011. © 2011 Society of Plastics Engineers

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Surface erosion due to partial discharges on several kinds of epoxy nanocomposites

Cited by 43 publications

References 6 publications

Short-term breakdown and long-term failure in nanodielectrics: a review

Short-term breakdown and long-term failure in nanodielectrics: a review

Time-evolution of nanostructured epoxy resin degradation due to surface partial discharge activities

Tribological and electrical properties of silica‐filled epoxy nanocomposites

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