Preparation and dielectric behaviors of thermoplastic and thermosetting polymer nanocomposite films containing BaTiO₃ nanoparticles with different diameters

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• 作者：Ben-Hui Fan^a ; Jun-Wei Zha^a ; Dong-Rui Wang^a ; Jun Zhao^a ; Zhong-Feng Zhang^b ; ^{csfuzzf@163.com} ; Zhi-Min Dang^a ; ^{dangzm@ustb.edu.cn}
• 关键词：A. Nanoparticle ; A. Nanocomposites ; A. Polymers ; B. Electrical properties ; Interface structure
• 刊名：Composites Science and Technology
• 出版年：2013
• 出版时间：17 May, 2013
• 年：2013
• 卷：80
• 期：Complete
• 页码：66-72
• 全文大小：1485 K

文摘

BaTiO₃ (BT) nanoparticles with three kinds of diameters were synthesized by alkoxide route and then dispersed into a thermoplastic polyvinylidene fluoride (PVDF) and a thermoset polyimide (PI)) to fabricate the BT/PVDF and the BT/PI nanocomposite films. Effects of nanoparticle size and polymer matrix on the dielectric properties were studied by two different measurement procedures at frequencies from 10^?2 Hz to 10⁶ Hz. A significant discrepancy of dielectric behaviors between the BT/PVDF films and the BT/PI films was found. The roles of nanoparticles (size and crystal phase) and properties of polymers (chemistry and chain structure) are used to explain the difference in dielectric behaviors.