Effects of BaTi4O9 Concentration on Dielectric Constants of the Polyetherimide/BaTi4O9 Composites

  • Wei-Kuo Chia
  • Chia-Ching Wu
  • Cheng-Fu Yang
  • Chien-Chen Diao
  • Chean-Cheng Su
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 234)


In this chapter, the poly(ether imide) (PEI)/BaTi4O9 (BT4) composites were investigated for the applications of the high dielectric constant embedded capacitors or flexible organic substrates. BT4 ceramic was sintered at 1,275°C and ground into microscale power. After that, BT4 ceramic power was mixed with PEI to form PEI/BT4 composites, the effects of the concentration of BT4 filler on the physical and dielectric properties were developed. Thermogravimetric analysis (TGA) was used to determine the weight loss, thermal degradation temperature (T d), and endothermic-exothermic peak of the PEI/BT4 composites. The Lichtenecker mixing rule was used to predict the variations of dielectric constants of the PEI/BT4 composites, and the mixing rule would fit the measured results. The dielectric constants of the PEI/BT4 composites with various concentrations (0–70 wt%) of BT4 filler were measured, and the dielectric constants were almost unchanged as the measured frequency increased, because the PEI was a nonpolarized material. This research proved that we could investigate the PEI/BT4 composites with stable frequency-dependent properties.


Polymer-ceramic composite Dielectric constant Thermogravimetric analysis 



The authors will acknowledge to the financial support NSC 99-2221-E-390-013-MY2 and NSC 101-2221-E-244 -006.


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Wei-Kuo Chia
    • 1
  • Chia-Ching Wu
    • 2
  • Cheng-Fu Yang
    • 3
  • Chien-Chen Diao
    • 2
  • Chean-Cheng Su
    • 3
  1. 1.Department of Electronic EngineeringFortune Institute of TechnologyKaohsiungTaiwan, R.O.C.
  2. 2.Department of Electronic EngineeringKao Yuan UniversityKaohsiungTaiwan, R.O.C.
  3. 3.Department of Chemical and Materials EngineeringNational University of KaohsiungKaohsiungTaiwan, R.O.C.

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