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首页> 外文期刊>IEEE Transactions on Dielectrics and Electrical Insulation >Effect of nanoparticles on impulse breakdown performance of propylene carbonate based on modified Kerr electro-optic measurements
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Effect of nanoparticles on impulse breakdown performance of propylene carbonate based on modified Kerr electro-optic measurements

机译：基于改进的Kerr电光测量的纳米颗粒对碳酸亚丙酯脉冲击穿性能的影响

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摘要

Impulse breakdown test results show the breakdown strengths of propylene carbonate modified by Al2O3 nanoparticles and Fe3O4 nanoparticles are improved by 13% and 20% than that of propylene carbonate without nano-modification, respectively. In order to explore the nano-modification mechanism, the electric field and space charge distributions in propylene carbonate with and without nano-modification were measured through a modified Kerr electro-optic measurement method. The measurement results show the space charge densities are decreased and the space charge transportations are inhibited in PC-based nanofluids compared with that of pure propylene carbonate due to the space charge adsorption of nanoparticle. Therefore, the streamer propagation in nanofluids is impeded, and the breakdown voltage is improved. The calculation of electric potential outside the nanoparticle indicates that Fe3O4 nanoparticle has stronger space charge adsorption capacity than Al2O3 nanoparticle. Accordingly, the Fe3O4-modified propylene carbonate shows greater improvement of breakdown performance than Al2O3-modified propylene carbonate.
机译：脉冲击穿测试结果表明，Al 2 O 3 纳米粒子和Fe 3 O 4 改性的碳酸亚丙酯的击穿强度>纳米颗粒比未经纳米改性的碳酸亚丙酯分别提高了13％和20％。为了探索纳米修饰的机理，通过改进的Kerr电光测量方法测量了具有和不具有纳米修饰的碳酸亚丙酯中的电场和空间电荷分布。测量结果表明，与PC的纳米流体相比，由于纯净的碳酸亚丙酯的吸附，纳米颗粒的空间电荷密度降低，空间电荷迁移受到抑制。因此，阻止了流在纳米流体中的传播，并且提高了击穿电压。纳米粒子外部电位的计算表明，Fe 3 O 4 纳米粒子比Al 2 O 3具有更强的空间电荷吸附能力纳米颗粒。因此，Fe 3 O 4 改性的碳酸亚丙酯比Al 2 O 3 表现出更大的击穿性能改善。改性的碳酸亚丙酯。

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