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Surface modified h-BN towards enhanced electrical properties and thermal conductivity of natural ester insulating oil

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  • Chen, Rui
  • Qiu, Qinpan
  • Peng, Xiao
  • Tang, Chao

Abstract

Natural ester is regarded as a potential alternative to mineral insulating oil and has a wide range of applications in power system, but its electrical properties and thermal conductivity still need to be improved. Nano modification technology can improve the performance of natural ester to ensure the stability and reliability of natural ester in power equipment. In this study, nano modified natural ester is prepared with APTES surface modified h-BN, and the mechanism of enhancing the properties of natural ester is explored from the microscopic perspective by molecular simulation. The experimental results showed that nano h-BN had good dispersion stability in natural ester after surface modification with APTES. The electrical properties and thermal conductivity of the nano modified natural ester have been greatly improved, and the relative optimal doping concentration of nanoparticles is 0.03 g/L. The simulation results show that the interfacial thickness between nanoparticles and natural ester is larger and more tightly bound after surface modification, which is beneficial to reduce thermal resistance and improve thermal conductivity of natural ester insulating oil. The traps at the interface between nanoparticles and natural ester can capture free electrons in the oil, thus improving the breakdown voltage of natural ester insulating oil.

Suggested Citation

  • Chen, Rui & Qiu, Qinpan & Peng, Xiao & Tang, Chao, 2023. "Surface modified h-BN towards enhanced electrical properties and thermal conductivity of natural ester insulating oil," Renewable Energy, Elsevier, vol. 204(C), pages 185-196.
    • Handle: RePEc:eee:renene:v:204:y:2023:i:c:p:185-196
    DOI: 10.1016/j.renene.2022.12.108
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    References listed on IDEAS

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    1. Zhang, Kai & Huang, Zhengyong & Li, Jian, 2025. "Probing the mechanism of antioxidant and oxidative stability properties of gallic acid and its esters in natural esters: Computational investigations and experiments," Renewable Energy, Elsevier, vol. 239(C).
    2. Huang, Chu & Zhu, Haixi & Ma, Yinjie & E, Jiaqiang, 2023. "Evaluation of lithium battery immersion thermal management using a novel pentaerythritol ester coolant," Energy, Elsevier, vol. 284(C).
    3. Lan, Danquan & Zhang, Yiyi & Jia, Pengfei & Lin, Xianfu & Xu, Chuanhui & Song, Heqi & Wei, Wenchang & Su, Zhicheng & Zhang, Xingtuo, 2025. "Molecular dynamics study on functional group surface modified graphene oxide towards enhanced dielectric properties and thermal conductivity of natural ester insulating oil," Renewable Energy, Elsevier, vol. 250(C).

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