钛酸钡改性及其聚酰亚胺复合材料的性能研究

›› 2015, Vol. 28 ›› Issue (3): 154-.

钛酸钡改性及其聚酰亚胺复合材料的性能研究

潘志龙

(西安电子科技大学先进材料与纳米科技学院,陕西西安 710071)

出版日期:2015-03-15 发布日期:2015-03-12
作者简介:潘志龙(1988—),男,硕士研究生。研究方向:电子材料封装。E-mail:panzhilong_520@163.com

Surface Modification of BaTiO₃and Dielectric Properties of Modified BaTiO3/Polyimide Composites

PAN Zhilong

(School of Advanced Material and Nanometer Technology,Xidian University,Xi'an 710071,China)

Online:2015-03-15 Published:2015-03-12

摘要/Abstract

摘要：

采用化学还原法在直径100 nm的钛酸钡表面沉积直径约5~20 nm的铜纳米颗粒,分析了BaTiO3-聚酰亚胺复合材料的介电性能和作用机理。研究结果表明:铜纳米颗粒通过化学键与钛酸钡表面的晶体结构结合在一起,与聚酰亚胺组合成两相复合材料,这有别于BaTiO3/导电粒子/聚酰亚胺三相复合材料。另外,虽然铜纳米颗粒有部分被氧化,导电性能降低,但改性后的BaTiO3-聚酰亚胺的复合材料还是具有低损耗、高介电的性能,充分说明了这种新型的两相复合材料能够实现高介电、低损耗的目标。

关键词: 钛酸钡, 铜纳米颗粒, 复合材料, 介电性质

Abstract:

The chemical reduction method is used in this paper to deposit copper nano-particles (about 5~20 nm) on the surface of the barium titanate (BT) of a diameter of 100 nm.Then the dielectric properties and the mechanism of modified BaTiO3/polyimide composites are studied.The results show that copper on the surface of the BT nano-particles by chemical bonds,that is,the copper crystal structure is linked with the BT crystal structure.So this composite is a two-phase composite material different from the three-phase composite materials of BT/conductive particles/polyimide.In addition,although some copper nano-particles are oxidized,the conductive performance is reduced,but the modified BT/polyimide composite material also has the properties of the low loss and the high dielectric constant.This fully shows that this new type of two-phase composite material can achieve the goal of high dielectric and low loss.

Key words: barium titanate;copper nano particles;composites;dielectric properties

中图分类号:

TN304

潘志龙. 钛酸钡改性及其聚酰亚胺复合材料的性能研究[J]. , 2015, 28(3): 154-.

PAN Zhilong. Surface Modification of BaTiO₃and Dielectric Properties of Modified BaTiO3/Polyimide Composites[J]. , 2015, 28(3): 154-.

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