Effect of Fe3O4 nanoparticles on space charge distribution in propylene carbonate under impulse voltage

Effect of Fe3O4 nanoparticles on space charge distribution in propylene carbonate under impulse voltage
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脉冲电压下 Fe3O4 纳米粒子对碳酸丙烯酯空间电荷分布的影响

DOI:
10.1063/1.4939542
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发表时间:
2015-12
期刊:
影响因子:
1.6
通讯作者:
Chen, Qiulin
Chen, Qiulin
中科院分区:
材料科学4区
文献类型:
--
作者:
Song, He;Yang, Qing;Guo, Hongda;Chen, Qiulin

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纳米铁磁材料Fe3O4的加入可使碳酸亚丙酯的正冲击击穿电压提高11.65%。为了进一步研究铁磁纳米粒子对放电过程中空间电荷分布的影响,本工作利用阵列光电探测器建立了克尔电光场映射测量系统,对改性前后碳酸丙烯酯中的电场和空间电荷分布进行了时间连续测量。测试结果表明,快电子可以被纳米Fe3O4捕获,并转化为相对较慢的负电荷粒子,抑制空间电荷的产生和输运,特别是负空间电荷。
Addition of nanoparticles of the ferromagnetic material Fe3O4 can increase the positive impulse breakdown voltage of propylene carbonate by 11.65%. To further investigate the effect of ferromagnetic nanoparticles on the space charge distribution in the discharge process, the present work set up a Kerr electro-optic field mapping measurement system using an array photodetector to carry out time-continuous measurement of the electric field and space charge distribution in propylene carbonate before and after modification. Test results show that fast electrons can be captured by Fe3O4 nanoparticles and converted into relatively slow, negatively charged particles, inhibiting the generation and transportation of the space charge, especially the negative space charge.
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