Preparation of a reversible cross-linked barium titanate by surface modification with dioxaborolanes

Preparation of a reversible cross-linked barium titanate by surface modification with dioxaborolanes
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二氧硼杂硼烷表面改性制备可逆交联钛酸钡

DOI:
10.1016/j.colsurfa.2022.128571
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发表时间:
2022-02
期刊:
Colloids and Surfaces A: Physicochemical and Engineering Aspects
影响因子:
--
通讯作者:
Xinde Jiang
Xinde Jiang
中科院分区:
其他
文献类型:
--
作者:
Xin Dai;Qilin Yan;Yang Liu;Zhenxi Wang;Shangxi Zhang;Meng Cao;Sheng Xu;Xinde Jiang

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陶瓷颗粒被广泛用于制备高介电常数的聚合物/陶瓷复合材料,但一般的改性不足以制备含二氧硼烷的功能聚合物,如玻璃聚合体。本文采用两种二恶硼烷改性钛酸钡制备了可逆交联钛酸钡(BaTiO3)。FTIR、XPS和DSC证实了改性batio3的形成。热重分析表明,改性降低了BaTiO3的热稳定性。通过SEM可以观察到交联BaTiO3形成了三维网络结构。研究了改性BaTiO3的相对介电常数和介电损耗的频谱,表明改性BaTiO3的相对介电常数的降低取决于改性BaTiO3表面的有机化合物。此外,交联的batio3在二恶硼烷基聚合物中表现出良好的分散性。
Ceramic particles are widely used to prepare polymer/ceramic composites with high permittivity, but general modifications are not enough for dioxaborolanes contented functional polymers such as vitrimers. In this paper, a reversible cross-linked barium titanate (BaTiO3) was prepared by two kinds of dioxaborolanes modified BaTiO3. The formation of modified BaTiO3is confirmed by FTIR, XPS and DSC. The TGA shows that modification reduced thermal stability of BaTiO3. It can be observed by SEM that three-dimensional network structure is formed in cross-linked BaTiO3. The frequency spectra of relative permittivity and dielectric loss are studied, indicating that the decrease of relative permittivity of modified BaTiO3depends on the organic compound on the surface of BaTiO3. In addition, the cross-linked BaTiO3shows a good dispersion in the dioxaborolanes based vitrimer.
DOI: 10.1039/d0ra01943g
发表时间: 2020-05-20
期刊: RSC advances
影响因子: 3.9
作者:
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