Dielectric and Thermal Properties of SiO 2/Polyamide-imide Nanocomposites

YANG Shu-yu; FAN Yong; CHEN Hao; YANG Rui-xiao; GUO Jia

doi:10.15938/j.jhust.2019.03.020

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Dielectric and Thermal Properties of SiO 2/Polyamide-imide Nanocomposites

更新时间：2026-08-31

- Dielectric and Thermal Properties of SiO 2/Polyamide-imide Nanocomposites
- Vol. 24, Issue 3, Pages: 123-129(2019)
- 作者机构：
  
  哈尔滨理工大学材料科学与工程学院,黑龙江,哈尔滨,150040
- 作者简介：
- 基金信息：
- DOI：10.15938/j.jhust.2019.03.020
  CLC： TM215.3
- Published：2019
- 稿件说明：
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YANG Shu-yu, FAN Yong, CHEN Hao, et al. Dielectric and Thermal Properties of SiO 2/Polyamide-imide Nanocomposites[J]. 2019, 24(3): 123-129.
DOI：

YANG Shu-yu, FAN Yong, CHEN Hao, et al. Dielectric and Thermal Properties of SiO 2/Polyamide-imide Nanocomposites[J]. 2019, 24(3): 123-129. DOI： 10.15938/j.jhust.2019.03.020.

摘要

采用微乳化-相转变法制备纳米SiO2分散液，与聚酰胺酰亚胺树脂机械共混并流延成膜，制成不同纳米含量的复合材料。采用透射电子显微镜（TEM）和傅里叶变换红外光谱（FT-IR）对材料进行表征，按照IEC60343的标准测试了材料的耐电晕寿命和其它介电性能，并进行了热重分析。结果表明，纳米粒子在PAI基体中分散均匀且反应完全；加入纳米粒子提高了材料的热稳定性；随纳米粒子含量的增加，电导率、介电常数和介质损耗均发生有规律的变化，PAI复合材料的耐电晕寿命随SiO2含量的增加而增加，纳米粒子含量达到20%时，耐电晕寿命为17.35h，是纯PAI材料的8倍以上；击穿强度随纳米粒子含量的增加而减小。

Abstract

The nano-SiO2 dispersions were prepared by microemulsification-phasetransformation method and mechanically blended with polyamide-imideresin

and then cast into films with different nano-contents. Nanocomposite films werecharacterized by transmission electron microscopy (TEM) and Fourier transforminfrared spectroscopy (FT-IR). The corona resistance life and other dielectricproperties of the material were tested in accordance with the IEC60343 standardand thermogravimetric analysis was carried out. The results show that nano SiO2particles are uniformly dispersed in PAI matrix and materials reactedcompletely.The thermal stability of the composites are enhanced by adding nanoparticles.With the increase of SiO2 content

theelectrical conductivity

dielectric constant and dielectric loss changesregularly. Compared with pure PAI

the corona resistance life of nanocompositewith 20% SiO2 is 17.35h

which increases more than eight times. However

the breakdown strength of nanocomposites is a little lower with increase ofnano SiO2 loading.

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Related Author

FAN Yong

GUO Jia

CHEN Hao

YANG Rui-xiao

YANG Shu-yu

HUA Cong-cong

CHEN Hao

YANG Rui-xiao

Related Institution

School of Material Science and Engineering, Harbin University of Science and Technology

Suzhou Jufeng Electrical Insulating System Co., Ltd

School of Civil Engineering and Architecture, Harbin University of Science and Technology

School of Sciences, Harbin University of Science Technology

College of Basic Science, Tianjin Agricultural University

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