TY - GEN
T1 - Experimental study on the dielectric properties of a liquid crystal polymer
AU - Yang, Peng
AU - Ohki, Yoshimichi
PY - 2013/12/1
Y1 - 2013/12/1
N2 - Dielectric behavior of a typical liquid crystal polymer Vecstar was studied by measuring its dielectric permittivity, conductivity and other electrical properties. Dielectric spectra are analyzed combined with the thermal properties and thermally stimulated current spectra, and space charge distributions. Complex electrical modulus is introduced in the analysis of the permittivity spectra, which proves to be effective to suppress the effects of large conduction currents at high temperatures. Moreover, the slope of the frequency dependence of εr' is different below and above 160 oC, which indicates that the Maxwell/Wagner polarization occurs inside the sample. The experimental results indicate that both the dielectric relaxation and electrical conduction are closely related with molecular motion and phase transition of the polymer. It is also shown that the polymer is an excellent insulating material in a wide temperature and frequency range.
AB - Dielectric behavior of a typical liquid crystal polymer Vecstar was studied by measuring its dielectric permittivity, conductivity and other electrical properties. Dielectric spectra are analyzed combined with the thermal properties and thermally stimulated current spectra, and space charge distributions. Complex electrical modulus is introduced in the analysis of the permittivity spectra, which proves to be effective to suppress the effects of large conduction currents at high temperatures. Moreover, the slope of the frequency dependence of εr' is different below and above 160 oC, which indicates that the Maxwell/Wagner polarization occurs inside the sample. The experimental results indicate that both the dielectric relaxation and electrical conduction are closely related with molecular motion and phase transition of the polymer. It is also shown that the polymer is an excellent insulating material in a wide temperature and frequency range.
UR - http://www.scopus.com/inward/record.url?scp=84901743389&partnerID=8YFLogxK
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U2 - 10.1109/CEIDP.2013.6748209
DO - 10.1109/CEIDP.2013.6748209
M3 - Conference contribution
AN - SCOPUS:84901743389
SN - 9781479925964
T3 - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
SP - 575
EP - 578
BT - 2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013
T2 - 2013 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013
Y2 - 20 October 2013 through 23 October 2013
ER -