Dielectric Properties Enhancement in Polybenzoxazine Composite at Multi-Frequency Range

Nidchakarn Krueson; H. Manuspiya; Pitak Laoratanakul; H. Ishida

doi:10.4028/www.scientific.net/AMR.55-57.105

Paper Titles

Effect of Al₂O₃Addition on Dielectric, Piezoelectric and Ferroelectric Properties of 0.2Pb(Zn_1/3Nb_2/3)O₃–0.8Pb(Zr_1/2Ti_1/2)O₃ Ceramics
p.89

Microstuctural Study and Properties of 0.8PZT-0.2BT Ceramics Using a Two-Stage Sintering Procedure
p.93

Effects of Manganese Addition on Phase Formation, Microstructure and Electrical Properties of Barium Titanate Ceramics
p.97

Induced Internal Bubble Shapes Affected Piezoelectric Behaviors of PVDF Films
p.101

Dielectric Properties Enhancement in Polybenzoxazine Composite at Multi-Frequency Range
p.105

Effect of Thermal Treatment on Dielectric Properties of 0.8Pb(Zr_1/2Ti_1/2)O₃ - 0.2Pb(Co_1/3Nb_2/3)O₃ Ceramics
p.109

Influence of Fabrication Processing on Perovskite Phase Formation of KNN-BZT
p.113

Effect of Lead Nickel Niobate Substitution on Phase Transitions of Lead Zirconate Ceramics Prepared by the Solid State Reaction Method
p.117

Synthesis, Crystal Structures, Phase Transition Characterization and Thermal Properties of the (1–x)PbZrO₃-xPb(Co_1/3Nb_2/3)O₃ Solid Solution System
p.121

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Dielectric Properties Enhancement in Polybenzoxazine Composite at Multi-Frequency Range

Abstract:

This research proposed a novel nano barium strontium titanate (BST) powder- polybenzoxazine composite as a new dielectric material. In this work, the dielectric properties of a surface-treated BST powder-polybenzoxazine composite were studied. The surface of the BST powders were modified by using three different chemicals: 3-aminopropyl-trimethoxysilane, benzoxazine monomer and phthalocyanine. The distribution of the BST powders in the polybenzoxazine matrix was observed by SEM. The dielectric constants of the composites with a function of frequency (1 kHz–10 MHz) were investigated. It was found that the composites with modified BST powders showed good distribution in the polybenzoxazine matrix, and the dielectric constants were also much enhanced than those with untreated BST powders. In comparisons among the three modification methods, the composite with the silane coupling modified BST powder showed significantly in dielectric constant improvement while the composite with the benzoxazine and phthalocyanine modified BST powders displayed lower dielectric loss due to the modified powder dispersed well in the polybenzoxazine matrix.