Unique pure barium titanate foams with three-dimensional interconnecting pore channels and their high-k cyanate ester resin composites at very low barium titanate loading

作者: Longhui Zheng , Guozheng Liang , Aijuan Gu , Li Yuan , Qingbao Guan

DOI: 10.1039/C6TC03772K

关键词: CeramicCyanate esterMaterials scienceComposite numberDielectric lossPolymerHigh-κ dielectricDielectricBarium titanateComposite material

摘要: High loading of ceramics has been the biggest shortcoming fabricating high-k ceramic/polymer composites. Herein, unique pure barium titanate (BT) foams with three-dimensional interconnecting foam channels, coded as BTFs, were synthesized using a polymer replication method, and BT content is adjustable. In addition, various loadings BTF embodied into cyanate ester (CE) resin to develop new kind composite. The spatial structure on thermal dielectric properties BTF/CE composites systematically researched, compared those traditional based commercial powders ground (BTFp), respectively. results show that exhibit much higher constant at very low concentrations than BT/CE BTFp/CE Typically, when 33.5 vol%, resultant BTF6(1200)/CE composite reaches 141.3 (100 Hz), about 8.4 14.1 times composites, respectively; in fact, highest among non-semiconductive reported date; meanwhile loss only 0.276. nature behind excellent was intensively discussed proven be attributed CE resin. This study establishes method preparing novel channels ceramic skeleton well good processing characteristics ceramics.

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