Preparation of Submicron CaCu 3 Ti 4 O 12 Dispersions and Filled Epoxy Compositions Based on Them
Inorganic Materials(2019)
摘要
— We have developed a technique for the preparation of a dielectric ceramic CaCu 3 Ti 4 O 12 filler and submicron dispersions of the filler in epoxy. The crystal structure of CaCu 3 Ti 4 O 12 has been refined using high-resolution neutron diffraction data with anisotropic atomic displacement parameters. We have studied the particle size distribution and rheological properties of CaCu 3 Ti 4 O 12 dispersions and, using rheological data, identified the surfactants that ensure Newtonian rheology of dispersions, convenient for filling porous templates. Surfactants have been shown to have a significant effect on dielectric characteristics of filled epoxy compositions.
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关键词
dielectric, oxide, neutron diffraction, crystal structure, epoxy, polymer composite materials, rheological properties
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