Understanding electrical discharge endurance of epoxy micro- and nano-composites through thermal analysis

Iyer, G.; Gorur, R.S.; Krivda, A.

doi:10.1109/tdei.2013.003466

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…[94] The linear and nonlinear rheological property of filled polymers can be characterized in order to make it possible to scan in frequency and in deformation a wide enough range to understand the properties of the mixtures and to link them to the dispersion, to the interactions and to the structure of the studied mixture. [95,96] The structure of semidilute suspensions of single-walled carbon nanotubes in polymeric matrices in the works of Chatterje and Krishnamoorti [97] indicates an aggregate presence in the polymer matrix that becomes slightly denser with increasing nanotube concentration. At low filler content, the fillers are separated in the mixture.…”

Section: Determination Of Percolation Thresholdmentioning

confidence: 99%

“…The linear and nonlinear rheological property of filled polymers can be characterized in order to make it possible to scan in frequency and in deformation a wide enough range to understand the properties of the mixtures and to link them to the dispersion, to the interactions and to the structure of the studied mixture. [ 95,96 ]…”

Section: Rheology Of Filled Systemsmentioning

confidence: 99%

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Design, Processing, and Challenges of Multicomponent Polymer Composites for Improved Electromagnetic Interference Shielding Properties: A Review

Li,

Masghouni,

Granger

et al. 2024

Macro Materials & Eng

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The colossal development of modern electronic devices has inevitably led to an increase in electromagnetic interference (EMI), which has gradually become the fourth most prevalent type of pollution in the world. It is therefore necessary to seek more effective EMI‐shielding materials to overcome the shortcomings of conventional metal‐based materials, which include high density, a lack of mechanical flexibility, low corrosion resistance and costly processing. Conductive polymer composites (CPCs) have attracted more and more attention due to their superiority in many aspects. However, their performances should be further enhanced for future applications. One polymer with only one type of filler often cannot meet this kind of requirement. In this paper, filled polymer materials for EMI shielding are reviewed in terms of their processing, rheological properties, conductivity, and shielding effectiveness. Moreover, the combination of different ingredients and fillers when fabricating multicomponent composites for EMI shielding is also highlighted. The coordination of various components in composites with different structures, including solid, segregated, layered/sandwiched, and foamed/porous structures, is then discussed.

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Section: Determination Of Percolation Thresholdmentioning

confidence: 99%

Section: Rheology Of Filled Systemsmentioning

confidence: 99%

Design, Processing, and Challenges of Multicomponent Polymer Composites for Improved Electromagnetic Interference Shielding Properties: A Review

Li,

Masghouni,

Granger

et al. 2024

Macro Materials & Eng

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show abstract

“…Castellon [17] thought that nano-silica could improve the space charge distributions of epoxy hybrid composites. Iyer [18] reported that micronano titania can improve the thermal stability of epoxy hybrid composites. Couderc [19] found that the addition of quartz and montmorillonite increased the glass transition temperature of EP.…”

Section: Introductionmentioning

confidence: 99%

Electrical and thermal performances of epoxy-based micro–nano hybrid composites at different electric fields and temperatures

Dai¹,

Chen²,

Wang³

et al. 2021

Nanotechnology

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This paper investigates the electrical and thermal properties of pure epoxy resin (EP) and its micro–nano hybrid composites (20 wt% micro-AlN fillers with 1 wt% and 3 wt% nano-Al2O3 fillers; 50% micro-AlN with 3% nano-Al2O3 fillers) for power electronic packaging applications. Electrical properties such as space charge distribution, electrical conductivity and surface potential decay are measured. The thermal performance of the fabricated samples is estimated using thermal analysis devices. The hybrid composite consisting of 20 wt% micro-AlN and 1 wt% nano-Al2O3 fillers exhibits the least space charge accumulation, higher thermal conductivity and better thermal stability. However, the excessive addition adversely affects space charge and electrical conductivity properties. The micro–nano hybrid composites significantly exhibit higher electrical conductivity than pure EP. The microfiller addition from 20 wt% to 50 wt% significantly improves the thermal conductivity of the EP. The reduced space charge injection and accumulation in the hybrid micro–nano composites are attributed to the enhancement of the injection barrier and reduction of the charge carrier traps in these materials. A theoretical mechanism of the charge dynamics inside the samples under different test conditions is proposed to support the experimental results.

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Charge dynamics and thermal properties of epoxy based micro and nano hybrid composites at high temperatures

Chen

Dai

Hong

et al. 2021

J of Applied Polymer Sci

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This paper presents the effects of the filler type and testing temperature on the charge dynamics and thermal properties of the epoxy resin. The micro‐nano hybrid composites with different content of the micro and nano aluminum nitride (AlN) fillers are fabricated. The morphology of micro‐nano hybrid composites is characterized. Electrical testing and thermal analysis methods are adopted to analyze its electrical and thermal performance. The results show that the space charge accumulation is suppressed and the charge decay process is facilitated in the hybrid composites. The electrical performances of the hybrid composites are enhanced by the nano‐fillers. The apparent mobility and activation energy are decreased with nano‐AlN fillers in the composites at the high temperature. The glass transition temperature and thermal stability of the materials is improved with the nano‐AlN. A hypothetical mechanism is proposed to explain the charge carrier injection and transport of the composites at different temperatures.

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Understanding electrical discharge endurance of epoxy micro- and nano-composites through thermal analysis

Cited by 9 publications

References 16 publications

Design, Processing, and Challenges of Multicomponent Polymer Composites for Improved Electromagnetic Interference Shielding Properties: A Review

Design, Processing, and Challenges of Multicomponent Polymer Composites for Improved Electromagnetic Interference Shielding Properties: A Review

Electrical and thermal performances of epoxy-based micro–nano hybrid composites at different electric fields and temperatures

Charge dynamics and thermal properties of epoxy based micro and nano hybrid composites at high temperatures

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