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

被引：18

作者：

Chen, Rui ^{[1
]}

Qiu, Qinpan ^{[1
]}

Peng, Xiao ^{[1
]}

Tang, Chao ^{[1
,2
]}

机构：

[1] Southwest Univ, Coll Engn & Technol, Chongqing 400700, Peoples R China

[2] Southwest Univ, Int R&D Ctr New Technol Smart Grid & Equipment, Chongqing 400700, Peoples R China

来源：

RENEWABLE ENERGY | 2023年 / 204卷

关键词：

Free electron; Interface; Surface modification; Nano h-BN; Natural ester insulating oil; DIELECTRIC-PROPERTIES; TRANSFORMER; PERFORMANCE; NANOFLUIDS; GRAPHENE; DENSITY; MATRIX;

D O I：

10.1016/j.renene.2022.12.108

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 hBN, 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.

引用

页码：185 / 196

页数：12

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