Abstract
Benzil derivative voltage stabilizer modified nano-silica (SiO2-BVA), silane coupling agent modified nano-silica, nano-silica and their corresponding low-density polyethylene (LDPE) nanocomposites were prepared. It was found that among the three types of nanocomposites, SiO2-BVA shows the best dispersion and exhibits enhancement effect on the tensile strength and elongation at break of LDPE. Compared with LDPE, the polarity of the space charges near two electrodes is altered and it is not independent on the surface chemistry of the nano-silica. Each type of nano-silica can suppress the injection and build-up of the space charges in LDPE and it is also independent on the surface chemistry of the nano-silica, while SiO2-BVA shows the best enhancement effect on the direct current breakdown strength of LDPE, and the characteristic breakdown strength of the nanocomposite with 1% SiO2-BVA was increased by 38.7% in comparison with LDPE. It is suggested that the enhanced breakdown strength results from the homogeneous nano-silica dispersion, the introduced voltage stabilizer on nano-silica surface and the increased depth and density of traps in the nanocomposites.
| Translated title of the contribution | Effect of Voltage Stabilizer Modified Nano-SiO2 on DC Electrical Properties of Low Density Polyethylene |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 330-337 |
| Number of pages | 8 |
| Journal | Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering |
| Volume | 40 |
| Issue number | 1 |
| DOIs | |
| State | Published - 5 Jan 2020 |