Effect of nanoparticles on charge transport in nanofluid-impregnated pressboard

Effect of nanoparticles on charge transport in nanofluid-impregnated pressboard
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纳米粒子对纳米流体浸渍纸板中电荷传输的影响

DOI:
10.1063/1.4730778
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发表时间:
2012-06
影响因子:
3.2
通讯作者:
周游
周游
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
杜岳凡;吕玉珍;李成榕;陈牧天;钟宇翔;张胜男;周游

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浸渍在由纳米颗粒(纳米流体)改性的矿物油中的Transformer压板表现出比纯油浸渍压板(OP)显著更高的AC和DC击穿电压。用脉冲电声技术测量了两种纸板的电荷输运和衰减特性。基于热激电流和傅立叶变换红外光谱的测试结果表明,与OP相比,纳米流体浸渍纸板(NP)具有更均匀的内部电场和更高的电荷衰减速率,这是由于NP内部结构的差异导致浅陷阱密度增加所致。
Transformer pressboard impregnated in mineral oil modified by nanoparticles (nanofluid) exhibits substantially higher AC and DC breakdown voltage than that of the pure oil-impregnated pressboard (OP). Charge transport and decay characteristics of both pressboards were measured by pulse electroacoustic technique. It reveals that nanofluid-impregnated pressboard (NP) has a more uniform internal electric field and a higher charge decay rate compared to OP, which is caused by an increase of shallow trap density in NP related to the difference of internal structures, based on the test results of thermally stimulated current and Fourier transformed infra-red spectroscopy.
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