化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (6) : 59-62.

新材料与新技术

铌、钴掺杂BaTiO₃及表面改性对BaTiO₃/PVDF复合材料介电性能的影响

^1,2*

^1,2

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Influence of co-doping with niobium and cobalt oxide and modification with KH550 on dielectric property of BaTiO₃/PVDF

Zhai Yue¹, Xue Haiping^1,2, Qin Yanli¹, Dai Xiujuan¹, Xu Shihao¹, Yang Dandan^1,2

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Received		Published
2018-01-23		2019-06-20
Issue Date	Revised Date
2019-07-05	2018-01-23

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摘要

采用铌、钴氧化物共掺杂钛酸钡(BaTiO₃,BT)制备铌钴钛酸钡(BTNC)粉体,采用硅烷偶联剂KH550对BTNC进行表面改性,制得改性铌钴钛酸钡(R-BTNC)粉体,再采用溶液共混法与聚偏氟乙烯(PVDF)制得BTNC/PVDF复合材料,并对复合材料进行了表征。研究结果表明,KH550能有效地改善填料在基体中的分散性和相容性,BTNC的加入使得PVDF中具有极化效应的β相增加,在10²Hz,R-BTNC用量为50%(体积分数)条件下,制得的 R-BTNC/PVDF复合材料的介电常数为79.4,介电损耗为0.0520。

Abstract

The barium titanate powders containing niobium and cobalt (BTNC) was prepared by co-doping of niobium and cobalt oxide with barium titanate(BaTiO₃,BT).The BTNC was modified with silane coupling agent (KH550) to obtain modified niobium and cobalt oxide with barium titanate (R-BTNC) powder.The BTNC/PVDF and composites were prepared by the method of solution blending with polyvinylidene fluoride,and the composites were characterized.Results showed that KH550 can effectively improve the dispersion of the fillers in the matrix and the compatibility with matrix,and the adding of BTNC increased the β phase with polarization effect in PVDF.The dielectric constant and loss of (R-BTNC) /PVDF filled with 50.0vol% R-BTNC at 10²Hz was 79.4 and 0.0520.

关键词

Nb₂O₅-Co₃O₄共掺杂BaTiO₃ / 表面改性 / 复合材料 / 介电性能

Key words

Nb₂O₅-Co₃O₄ co-doping BaTiO₃ / surface modification / composite / dielectric property

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铌、钴掺杂BaTiO₃及表面改性对BaTiO₃/PVDF复合材料介电性能的影响[J]. 化工新型材料, 2019, 47(6): 59-62 DOI:

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