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Synthesis of BaTiO(3)nanoparticles as shape modified filler for high dielectric constant ceramic-polymer composite

机译：用于高介电常数陶瓷 - 聚合物复合材料的BATIO（3）纳米颗粒作为形状改性填料的合成

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摘要

Coral-like structured barium titanate (BaTiO3) nanoparticles were synthesized as filler for a high dielectric elastomer. The nanoparticle size, and shape, and the reactivity of the synthesis were modified according to temperature, time, pH, and precursor materials. Dielectric properties of poly(dimethylsiloxane) (PDMS) composites were estimated by volume fractions of BaTiO(3)of 5, 10, and 15 vol% for both sphere and coral-like shapes. As a result, coral-like BaTiO3-PDMS composites had the highest dielectric constant of 10.97, which was 64% higher than the spherical BaTiO3-PDMS composites for the 15 vol% fraction. Furthermore, the phase transition process and surface modification were applied to increase the dielectric properties through calcination and improved particle dispersion in the elastomer using polyvinylpyrrolidone (PVP). The dispersion of the PVP coated BaTiO3-PDMS composite was improved compared to pristine BaTiO(3)as shown by SEM imaging. The coral-like BaTiO(3)embedded composite could be used for electronic devices such as piezoelectric devices or electro-adhesive grippers, which require flexible and high dielectric materials.
机译：珊瑚状结构钡钛酸钡（BATIO3）纳米颗粒被合成为高介电弹性体的填料。根据温度，时间，pH和前体材料改性合成的纳米颗粒尺寸和形状和形状。对于球体和珊瑚状形状的5,10和15体积％的BaTiO（3）的体积分数估计聚（二甲基硅氧烷）（PDMS）复合材料的介电性能。结果，珊瑚样BATIO3-PDMS复合材料的最高介电常数为10.97，比球形BATIO3-PDMS复合材料高出64％，用于15体积％的级分。此外，施加相转变过程和表面改性以通过煅烧和使用聚乙烯吡咯烷酮（PVP）的弹性体中的改进的颗粒分散来增加介电性质。与原始BATIO（3）相比，改善了PVP涂覆的BATIO3-PDMS复合物的分散，如SEM成像所示。珊瑚状的BATIO（3）嵌入式复合材料可用于电子设备，例如压电装置或电胶夹具，其需要柔性和高介电材料。

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  • 来源
    《RSC Advances》 |2020年第49期|共9页
  • 作者

    Kim Taehee; Lim Hanwhuy; Lee Youngkwan; Kim Baek-Jin;

  • 作者单位

    Korea Inst Ind Technol KITECH Cheonan South Korea;

    Korea Inst Ind Technol KITECH Cheonan South Korea;

    Sungkyunkwan Univ Dept Chem Engn Suwon South Korea;

    Korea Inst Ind Technol KITECH Cheonan South Korea;

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  • 正文语种 eng
  • 中图分类 化学;
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