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首页> 外文期刊>Materials Chemistry and Physics >Effect of nano-sized layered silicate on AC electrical treeing behavior of epoxy/layered silicate nanocomposite in needle-plate electrodes
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Effect of nano-sized layered silicate on AC electrical treeing behavior of epoxy/layered silicate nanocomposite in needle-plate electrodes

机译：纳米层状硅酸盐对针板电极中环氧树脂/层状硅酸盐纳米复合材料交流电树化行为的影响

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摘要

A layered silicate at 1-10 wt% was incorporated into an epoxy matrix in order to prepare an insulation material for heavy electric equipments using a three roll mill for nanoparticle dispersion, and then alternating current (AC) electrical treeing and breakdown tests were carried out. Wide-angle X-ray diffraction (WAXD) analysis and transmission electron microscopy (TEM) observation showed that the multilayered silicate at 1 wt% was fully exfoliated into nano-sized monolayers in the epoxy matrix, however the silicate layers at over 3 wt% were in an intercalated state. When 1 wt% nano-sized silicate layers were incorporated, the tree initiation time in the needle-plate electrodes geometry was 18.0 times longer and the breakdown time was 16.7 times longer than those of the neat epoxy resin under the applied electrical field of 520.9 kV mm~(-1) at 30 ℃. But these values were in great decline at over 3 wt% of the layered silicate content. These results meant that the exfoliated nano silicates blocked the tree initiation and propagation processes effectively, however the effect largely decreased with the increasing silicate content in the intercalated state.
机译：为了将用于纳米颗粒分散的三辊磨机用于重型电气设备的绝缘材料，将1-10 wt％的层状硅酸盐掺入到环氧树脂基质中，然后进行交流电（AC）电气树化和击穿测试。广角X射线衍射（WAXD）分析和透射电子显微镜（TEM）观察表明，1％（重量）的多层硅酸盐被完全剥落成环氧基质中的纳米单层，而硅酸盐层超过3％（重量）。处于插层状态。当掺入1 wt％的纳米级硅酸盐层时，在520.9 kV的施加电场下，针板电极几何形状中的树起始时间比纯环氧树脂长18.0倍，击穿时间长16.7倍。在30℃时为mm〜（-1）。但是当层状硅酸盐含量超过3wt％时，这些值大大降低。这些结果意味着剥落的纳米硅酸盐有效地阻止了树木的萌芽和繁殖过程，但是随着插层态硅酸盐含量的增加，这种影响大大降低了。

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  • 来源
    《Materials Chemistry and Physics》 |2013年第3期|776-780|共5页
  • 作者

    Jae-Jun Park; Jae-Young Lee;

  • 作者单位

    Department of Electrical and Electronic Engineering, Joongbu University, Chungnam-do 312-702, South Korea;

    Hydrogen Fuel Cell Parts and Applied Technology Regional Innovation Center, Woosuk University, Jeonbuk-do 565-902, South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Composite materials; Insulators; Nanostructures; Electrical properties;

    机译：复合材料;绝缘子纳米结构;电性能;

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