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Molecular Simulation Study on Effect of Nano-Al2O3 Particle on Micro Characteristics of Vegetable Insulating Oil
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Changhai SUN, Jiabin GUO, Baitong CHEN, Tianming LI, Shuang JU
Insulating Materials | 2021, 54(4) : 14 - 20
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Insulating Materials | 2021, 54(4): 14-20
• Material Research •
Molecular Simulation Study on Effect of Nano-Al2O3 Particle on Micro Characteristics of Vegetable Insulating Oil
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Changhai SUN, Jiabin GUO, Baitong CHEN, Tianming LI, Shuang JU
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  • School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China
Published: 2021-04-20 doi: 10.16790/j.cnki.1009-9239.im.2021.04.003
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The effect of nano-Al2O3 on the microscopic properties of vegetable insulating oil was studied by molecular simulation, and its result was verified by tests. The mechanism of surface interaction between nano-Al2O3 and vegetable insulating oil molecules was analyzed, models of vegetable insulating oil before and after nano-Al2O3 modification were established. The hydrogen bond, radial distribution function (RDF) of oil molecule, and diffusion coefficient of water molecule were studied, and the thermal ageing experiment was conducted on vegetable insulating oils with different concentration of nano-Al2O3. The results show that compared with the vegetable insulating oil without modification, there are more hydrogen bonds in the modified vegetable insulating model, the peak value of RDF is greater, and the diffusion coefficient of water molecules is smaller. In the process of thermal ageing, the dielectric loss of the modified oil is smaller than that of the unmodified oil, which shows that the nano-Al2O3 modified vegetable insulating oil has excellent stability, and its thermal stability and insulation performance are enhanced.

vegetable oil  /  nano-Al2O3  /  molecular simulation
Changhai SUN, Jiabin GUO, Baitong CHEN, Tianming LI, Shuang JU. Molecular Simulation Study on Effect of Nano-Al2O3 Particle on Micro Characteristics of Vegetable Insulating Oil[J]. Insulating Materials, 2021 , 54 (4) : 14 -20 . DOI: 10.16790/j.cnki.1009-9239.im.2021.04.003
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doi: 10.16790/j.cnki.1009-9239.im.2021.04.003
  • Receive Date：2020-06-28
  • Online Date：2026-01-26
  • Published：2021-04-20
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  • Received：2020-06-28
  • Revised：2020-08-06
Affiliations
    School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2021.04.003
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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