Insulating Properties of Low Density Polyethylene/Alumina Nanocomposites | Science Publications

American Journal of Engineering and Applied Sciences

Hong-DA Yan¹  Zhi-Min Dang¹  Si-Jiao Wang¹  Yun-Hui Wu¹  Jun-Wei Zha¹ 

关键词: Polyethylene;    Al2O3;    Composites;    Space Charge;    Decay;    J-V Curves;   

DOI  :  10.3844/ajeassp.2015.405.409

学科分类：工程和技术（综合）

来源: Science Publications

【 摘 要 】

High-Voltage Direct Current (HVDC) cable has become animportant factor in the development of HVDC transmission. However, there arestill difficulties such as space charge distribution in the development of HVDCcables. In this study, Low Density Polyethylene (LDPE) nanocomposites filledwith nano alumina (nano-Al₂O₃) particles with or withoutmodification were prepared by employing melting blend method. The results showthat the modified nano-Al₂O₃ particles with vinyl silanecoupling can be homogeneously dispersed in LDPE matrix. Space charge of the LDPEnanocomposites was tested by Pulsed Electro-Acoustic (PEA) method. The PEAspectrum indicated that decay charge effect of the LDPE/Al₂O₃nanocomposites is better than that of neat LDPE. The space charge accumulatedin the nanocomposites can be effectively decayed. The J-V curves showthe nano-Al₂O₃ decrease the carrier mobility. Theexcellent insulation properties of the LDPE nanocomposites were attributed tothe better interfacial adhesion between the surface-treated nano-Al₂O₃particles and the matrix.

【 授权许可】

Unknown