TY - GEN
T1 - Aromatic polyurea for high temperature high energy density capacitors
AU - Wang, Yong
AU - Zhou, Xin
AU - Lin, Minren
AU - Lu, Sheng Guo
AU - Lin, Junhong
AU - Zhang, Qiming
PY - 2008/9
Y1 - 2008/9
N2 - We investigate aromatic polyureas which can be fabricated in the form of thin films through CVD. It was found that the polymer possesses a flat dielectric response (k∼ 4.2 and loss <1%)) to more than 200°C The frequency-independent dielectric properties in the investigated frequency range(1kHz∼1MHz), low conductance, low dissipation factor (∼0.005), high breakdown strength (>800MV/m), high energy density (>12J/cm3) and high efficiency suggest this polymer can be a good candidate material for high temperature energy storage capacitors. Breakdown strength was analyzed with Weibull model over a broad temperature range (25°C ∼180°C). Experimental results indicate that aromatic polyurea is more like a nonpolar linear dielectric material because of its highly cross-linked structures. The experiment results further show that this polymer maintains its high performance even at high temperatures.
AB - We investigate aromatic polyureas which can be fabricated in the form of thin films through CVD. It was found that the polymer possesses a flat dielectric response (k∼ 4.2 and loss <1%)) to more than 200°C The frequency-independent dielectric properties in the investigated frequency range(1kHz∼1MHz), low conductance, low dissipation factor (∼0.005), high breakdown strength (>800MV/m), high energy density (>12J/cm3) and high efficiency suggest this polymer can be a good candidate material for high temperature energy storage capacitors. Breakdown strength was analyzed with Weibull model over a broad temperature range (25°C ∼180°C). Experimental results indicate that aromatic polyurea is more like a nonpolar linear dielectric material because of its highly cross-linked structures. The experiment results further show that this polymer maintains its high performance even at high temperatures.
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M3 - Conference contribution
AN - SCOPUS:74549144348
SN - 9781605111063
T3 - Materials Research Society Symposium Proceedings
SP - 179
EP - 184
BT - Materials Research Society Symposium Proceedings - Polymer-Based Smart Materials - Processes, Properties and Application
T2 - 2008 MRS Fall Meeting: Polymer-Based Smart Materials - Processes, Properties and Application
Y2 - 2 December 2008 through 5 December 2008
ER -