TY - GEN
T1 - DC breakdown in polyetherimide composites and implication for structural engineering
AU - Tan, Qi
AU - Cao, Yang
AU - Irwin, Patricia
PY - 2007
Y1 - 2007
N2 - Recent advances in nanomaterials permit the improvement of dielectric characteristics of ceramic / polymers nanocomposites. In addition, it is recognized that incorporation of nanofillers improves the mechanical, chemical, optical, acoustic, and thermal properties of polymers. Voltage endurance and electrical breakdown strength of dielectrics were even enhanced with some nanometric particles. Nevertheless, the preferred filler type and consistent improvement in the breakdown strength in the resulting nanocomposites are not well understood. In this paper, the effect of various fillers (metal, semiconductor and insulator) was studied showing the weak relationship of breakdown strength with the band gap of the nanoceramic fillers. Published data on dielectric constant and breakdown strength of various dielectrics was analyzed from the viewpoint of energy band gap. The results show that interfacial interaction of the ceramic particle-polymer appears to be very important to the electrical breakdown of the nanocomposites. An engineered nanodielectric structure is proposed for higher permittivity and dielectric breakdown strength. Lacking of control of this interface and structural order at mesoscopic level is subjected to fundamental limitations of the nanodielectric engineering.
AB - Recent advances in nanomaterials permit the improvement of dielectric characteristics of ceramic / polymers nanocomposites. In addition, it is recognized that incorporation of nanofillers improves the mechanical, chemical, optical, acoustic, and thermal properties of polymers. Voltage endurance and electrical breakdown strength of dielectrics were even enhanced with some nanometric particles. Nevertheless, the preferred filler type and consistent improvement in the breakdown strength in the resulting nanocomposites are not well understood. In this paper, the effect of various fillers (metal, semiconductor and insulator) was studied showing the weak relationship of breakdown strength with the band gap of the nanoceramic fillers. Published data on dielectric constant and breakdown strength of various dielectrics was analyzed from the viewpoint of energy band gap. The results show that interfacial interaction of the ceramic particle-polymer appears to be very important to the electrical breakdown of the nanocomposites. An engineered nanodielectric structure is proposed for higher permittivity and dielectric breakdown strength. Lacking of control of this interface and structural order at mesoscopic level is subjected to fundamental limitations of the nanodielectric engineering.
UR - http://www.scopus.com/inward/record.url?scp=47349126797&partnerID=8YFLogxK
U2 - 10.1109/ICSD.2007.4290839
DO - 10.1109/ICSD.2007.4290839
M3 - 会议稿件
AN - SCOPUS:47349126797
SN - 1424407516
SN - 9781424407514
T3 - 2007 International Conference on Solid Dielectrics, ICSD
SP - 411
EP - 414
BT - 2007 International Conference on Solid Dielectrics, ICSD
T2 - 2007 International Conference on Solid Dielectrics, ICSD
Y2 - 8 July 2007 through 13 July 2007
ER -