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The study on cure behavior and dielectric property of Ceramic (BNT)-Polymer (BCB) composite material  

Kim, Un-Yong (Advanced Materials and Components Lab., Korea Institute of Ceramic Engineering and Technology)
Chun, Myoung-Pyo (Advanced Materials and Components Lab., Korea Institute of Ceramic Engineering and Technology)
Cho, Jung-Ho (Advanced Materials and Components Lab., Korea Institute of Ceramic Engineering and Technology)
Kim, Byung-Ik (Advanced Materials and Components Lab., Korea Institute of Ceramic Engineering and Technology)
Myoung, Sung-Jae (Advanced Materials and Components Lab., Korea Institute of Ceramic Engineering and Technology)
Sin, Dong-Uk (Department Materials Science Engineering, Hanyang University)
Abstract
We made $(1-x)BCB-xBNT(BaNd_2Ti_4O_{12})$ (x=20, 30, 40, 50 vol%) composite thick film with a high dielectric constant and low loss by the hand casting method. Dielectric constant and dielectric loss of prepared thick film are measured at 1MHz and curing behavior of the film are observed through thermal analysis such as DSC. We investigated the effect of contents of BNT filler and curing behavior of film on dielectric properties of BCB-BNT composite. Dielectric constant increased with increasing BNT filler from 20 to 50 vol% and dielectric loss ($tan{\delta}$) decreased with increasing BNT filler. Dielectric constant and loss ($tan{\delta}$) of composite material was not nearly dependent on the curing behavior. But as a result of TCC (Temperature Characteristics of Coefficient) decreased with increasing the curing temperature, we confirmed that the curing of these composite system is most stable above $250^{\circ}C$.
Keywords
Polyment-ceramic composite; Dielectric; Curing;
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