Electrical properties of epoxy/POSS composites with homogeneous nanostructure

Huang, Xingyi; Li, Yong; Liu, Fei; Jiang, Pingkai; Iizuka, Tomonori; Tatsumi, Kohei; Tanaka, Toshikatsu

doi:10.1109/tdei.2014.004314

Cited by 56 publications

(27 citation statements)

References 35 publications

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“…Evaluation of resistance to electrical discharges based on eroded sample volume after 30 hours of exposure to PD between the POSS molecules with their inorganic cores and the epoxy matrix, the resulting change of morphology, and hence, the nanostructuration of the respective composite, gives rise to the significant resistance to corona discharges for the ePOSS 1wt% and ePOSS 2.5wt%. Coherent results with a different reactive POSS additive have been recently published in [12].…”

Section: Resistance To Corona Dischagementioning

confidence: 99%

“…The successful incorporation of POSS into epoxy has been shown to significantly improve the composite's dielectric performance, in terms of corona resistance [10][11][12] and dielectric breakdown strengths [13][14][15]. Furthermore, higher thermal stabilities of POSS composites have been reported in [8,16], as well as improved thermo-mechanical properties of such nanostructured materials [7].…”

Section: Introductionmentioning

confidence: 99%

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Nanostructured epoxy/POSS composites: enhanced materials for high voltage insulation applications

Heid

Fréchette

David

2015

IEEE Trans. Dielect. Electr. Insul.

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In this study, the dielectric and thermal properties of nanostructured epoxy/POSS (Polyhedral Oligomeric Silsesquioxanes) composites were investigated, using a reactive Triglycidylisobutyl-POSS (TGIB-POSS) additive from 1 up to 10 wt%. POSS has been successfully dispersed at a molecular level for low content composites, which show a remarkably improved resistance to corona discharges, with up to 60% less eroded sample volume, along with significantly increased dielectric breakdown strengths and thermal conductivities. Epoxy/POSS composites containing 5 wt% and more of the POSS additive exhibit agglomerations, which have been observed by SEM. Furthermore, dielectric spectroscopy revealed additional interfacial loss peaks for such composites containing 5 wt% POSS and more, in addition to the α-and β-peaks known for epoxy.

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Section: Resistance To Corona Dischagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanostructured epoxy/POSS composites: enhanced materials for high voltage insulation applications

Heid

Fréchette

David

2015

IEEE Trans. Dielect. Electr. Insul.

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“…2 nm in size) and the polymer, resulting in a re-structuration of the polymer network on a nanometric scale. As a result, epoxy/POSS composites have revealed notable improvements in both, dielectric and thermal performances, as published in recent studies [12,[14][15][16].…”

Section: Introductionmentioning

confidence: 60%

Functional epoxy composites for high voltage insulation involving c-BN and reactive POSS as compatibilizer

2015

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Epoxy resins modified with only Polyhedral Oligomeric Silsesquioxanes (POSS) or cubic boron nitride (c-BN), as well as multiphase composites containing both, POSS and c-BN, were fabricated and investigated. Two different types of reactive liquid POSS with molecule sizes of approximately 2 nm, viz. Triglycidylisobutyl-POSS (TGIB-POSS) and Glycidyl-POSS were added in contents of 1 wt% to form single-phase and multiphase composites. Submicrometric c-BN, in contents of 5 wt%, was used for the respective single-phase composite as well as in the multiphase samples to create multifunctional nanostructured composites. All specimens were characterized by Broadband Dielectric Spectroscopy (BDS), dielectric breakdown experiments, Differential Scanning Calorimetry (DSC) and thermal conductivity measurements. The single-phase POSS composites have seen up to 15% improved dielectric breakdown strengths and enhanced thermal conductivities by up to 20%. The single-phase c-BN composite revealed the most distinct improvement in thermal conductivity of more than 25%, along with a reduction in dielectric breakdown strength of approximately 18%. Additionally, the dielectric and thermal properties of the multiphase composites containing 1 wt% POSS and 5 wt% c-BN, were found to be solely dictated by the submicrometric c-BN particles. SEM observations revealed a significantly improved dispersion of the c-BN particles in the presence of POSS for the multiphase composites, suggesting that POSS acts as a compatibilizer between organic epoxy matrix and inorganic filler particles.

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“…For example, octa‐aminophenyl POSS (OASQ) or glycidyl‐POSS are commonly incorporated into epoxy to form hybrid materials with enhanced electrical properties. Tanaka incorporated OASQ into epoxy to fabricate dielectric epoxy/POSS nanocomposites . The curing reaction occurred between the epoxide ring and acid anhydride as well as between the epoxide ring and POSS.…”

Section: Advanced Applicationsmentioning

confidence: 99%

“…Tanaka incorporated OASQ into epoxy to fabricate dielectric epoxy/POSS nanocomposites. [74] The curing reaction occurred between the epoxide ring and acid anhydride as well as between the epoxide ring and POSS. The electrical properties were influenced significantly by the molecular dispersion of POSS in the epoxy, which was determined by the reaction degree of POSS with epoxy.…”

Section: Enhancement Of Electrical Properties Of Polymersmentioning

confidence: 99%

Silsesquioxane‐Containing Hybrid Nanomaterials: Fascinating Platforms for Advanced Applications

Dong

2019

Macro Chemistry & Physics

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Silsesquioxanes (SSQs), with the general formula, (RSiO1.5)n—where R stands for an organic group, such as alkyl, aryl, alkoxy, or H—are a type of molecular‐level organic/inorganic hybrid silica‐based material. These materials contain reactive or nonreactive organic moieties as well as inorganic Si–O–Si frameworks. In the past few years, extensive efforts have been made using SSQs to construct multifunctional nanocomposites with suitable properties for a range of applications. In this review, the recent various applications of SSQ‐containing hybrid materials are discussed, in addition to updates of the nanocomposite applications. Various physical structures and chemical reactions in SSQ‐based hybrid nanomaterials are emphasized with regard to applications in the field of polymer nanocomposites, catalysts, adsorption, sensors, and biomedicine. This review focuses on results reported in the recent five years (2013–2018).

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Electrical properties of epoxy/POSS composites with homogeneous nanostructure

Cited by 56 publications

References 35 publications

Nanostructured epoxy/POSS composites: enhanced materials for high voltage insulation applications

Nanostructured epoxy/POSS composites: enhanced materials for high voltage insulation applications

Functional epoxy composites for high voltage insulation involving c-BN and reactive POSS as compatibilizer

Silsesquioxane‐Containing Hybrid Nanomaterials: Fascinating Platforms for Advanced Applications

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