High temperature breakdown strength and voltage endurance characterization of nanofilled polyamideimide

Schadler, Linda S.; Nelson, J. K.; Calebrese, Christopher; Travelpiece, A.M.; Schweickart, D.L.

doi:10.1109/tdei.2012.6396969

Cited by 28 publications

(20 citation statements)

References 44 publications

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“…The deviation is likely associated with polymer-particle interface between PI matrix and Al 2 O 3 nanoparticles. The interface has a permittivity different from the bulk polymer and nano-fillers, therefore, it can impact the composite permittivity [20]. With the increase of nano-filler, the volume fraction of interface zone could increase in nanocomposite.…”

Section: Analysis Of Dielectric Propertiesmentioning

confidence: 99%

“…It strongly depends upon the environment condition, such as temperature, humidity, atmospheric pressure and so on [20,29,30]. Figure 10 shows the breakdown strength of pure PI film and PI/Al 2 O 3 nanocomposites with different doped wt% nano-Al 2 O 3 content measured at 25 and 230 ℃ respectively.…”

Section: Breakdown Voltage In Different Temperature Environmentmentioning

confidence: 99%

“…The dielectric properties of insulating materials affected by the frequency and temperature can be depicted by using dielectric frequency spectroscopy and dielectric temperature spectroscopy [16,17]. Most studies of breakdown strength of polymers and their nanocomposites have been carried out at room temperature, but some studies reveal that the breakdown strength performed at high temperature could be lowered for the Manuscript polymers and their nanocomposites [4,[18][19][20]. It is demonstrated that the voltage endurance is related to the temperature strongly and the lifetime shortens rapidly with the temperature increasing [20,21].…”

Section: Introductionmentioning

confidence: 99%

“…Most studies of breakdown strength of polymers and their nanocomposites have been carried out at room temperature, but some studies reveal that the breakdown strength performed at high temperature could be lowered for the Manuscript polymers and their nanocomposites [4,[18][19][20]. It is demonstrated that the voltage endurance is related to the temperature strongly and the lifetime shortens rapidly with the temperature increasing [20,21]. Thus, a study focused on the dielectric properties of PI/Al 2 O 3 nanocomposites used in high temperature environments was pursued in this work.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of temperature effects on voltage endurance for polyimide/Al₂O₃nanodielectrics

Luo

Liu

et al. 2014

IEEE Trans. Dielect. Electr. Insul.

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In order to investigate the effects of inorganic nanofillers on the electrical properties of polyimide (PI), PI/Al 2 O 3 nanocomposites films were prepared via the in-situ polymerization. The hybrids films were characterized by scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR). The dielectric behaviors of pure PI and PI/Al 2 O 3 samples were studied as a function of the measured frequencies and temperatures. Meanwhile, the breakdown strength of pure PI and PI/Al 2 O 3 samples measured at 25 and 230 ℃ was analyzed. The corona-resistant lifetime of samples under bipolar continuous square impulse voltage (BCSIV) was performed. With the wt% content of Al 2 O 3 nanoparticles increasing, the real (ε') and imaginary (ε") of relative permittivity present an increasing tendency, while electrical breakdown strength declines obviously. The Al 2 O 3 nanofillers improved the corona-resistant property of PI and the corona-resistant lifetime of PI/Al 2 O 3 sample with 25 wt% (weight percent) of nano-Al 2 O 3 particles is over 23 times longer than that of the pure PI film. Besides, the temperature is an important factor which would significantly influence the electrical properties of pure PI and PI/Al 2 O 3 samples. The elevated temperature would reduce the breakdown voltage and corona-resistant property.

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Section: Analysis Of Dielectric Propertiesmentioning

confidence: 99%

Section: Breakdown Voltage In Different Temperature Environmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation of temperature effects on voltage endurance for polyimide/Al₂O₃nanodielectrics

Luo

Liu

et al. 2014

IEEE Trans. Dielect. Electr. Insul.

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“…Recently, it is very interesting to find out that the nano-sized magnesia particles (MgO), among the various nanoparticles, offer LDPE excellent electrical insulating properties and therefore become the promising candidate filler for HVDC cables. It has been reported that addition of a small amount of MgO nanoparticles to LDPE polymer can increase the volume resistivity [9], enhance the breakdown strength [10][11][12][13], prevent the extension of electrical tree [14], reduce the relative permittivity [15] and suppress the accumulation of space charge [16]. What should be emphasized is that the space charge is a key parameter for evaluating the quality and service life of HVDC cables made of LDPE [17,18].…”

Section: Introductionmentioning

confidence: 99%

Improved electrical insulating properties of LDPE based nanocomposite: Effect of surface modification of magnesia nanoparticles

Zhang

Chen

et al. 2014

Composites Part A: Applied Science and Manufacturing

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A Facile In Situ Surface‐Functionalization Approach to Scalable Laminated High‐Temperature Polymer Dielectrics with Ultrahigh Capacitive Performance

Dong

et al. 2021

Adv Funct Materials

157

112

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High‐temperature dielectric materials for capacitive energy storage are in urgent demand for modern power electronic and electrical systems. However, the drastically degraded energy storage capabilities owing to the inevitable conduction loss severely limit the utility of dielectric polymers at elevated temperatures. Herein, a new approach based on the in situ preparation of oxides onto polyimide (PI) films to high‐temperature laminated polymer dielectrics is described. As confirmed by computational simulations, the charge injection at the electrode/dielectric interface and electrical conduction in dielectric films are substantially depressed via engineering the in situ prepared oxide layer in the laminated composites. Consequently, ultrahigh dielectric energy densities and high efficiencies are simultaneously achieved at elevated temperatures. Especially, an excellent energy density of 1.59 J cm−3 at a charge–discharge efficiency of above 90% has been achieved at 200 °C, outperforming the current dielectric polymers and composites. Together with its excellent discharging capability and cyclic reliability, the laminate‐structured film is demonstrated to be a promising class of polymer dielectrics for high‐power energy storage capacitors operating at elevated temperatures. The facile preparation method reported herein is readily adaptable to a variety of polymer thin films for energy applications under extreme environments.

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High temperature breakdown strength and voltage endurance characterization of nanofilled polyamideimide

Cited by 28 publications

References 44 publications

Investigation of temperature effects on voltage endurance for polyimide/Al₂O₃nanodielectrics

Investigation of temperature effects on voltage endurance for polyimide/Al₂O₃nanodielectrics

Improved electrical insulating properties of LDPE based nanocomposite: Effect of surface modification of magnesia nanoparticles

A Facile In Situ Surface‐Functionalization Approach to Scalable Laminated High‐Temperature Polymer Dielectrics with Ultrahigh Capacitive Performance

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High temperature breakdown strength and voltage endurance characterization of nanofilled polyamideimide

Cited by 28 publications

References 44 publications

Investigation of temperature effects on voltage endurance for polyimide/Al2O3nanodielectrics

Investigation of temperature effects on voltage endurance for polyimide/Al2O3nanodielectrics

Improved electrical insulating properties of LDPE based nanocomposite: Effect of surface modification of magnesia nanoparticles

A Facile In Situ Surface‐Functionalization Approach to Scalable Laminated High‐Temperature Polymer Dielectrics with Ultrahigh Capacitive Performance

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Investigation of temperature effects on voltage endurance for polyimide/Al₂O₃nanodielectrics

Investigation of temperature effects on voltage endurance for polyimide/Al₂O₃nanodielectrics