AI Article Synopsis
- - The study investigates how adding nano-bismuth ferrite (BiFeO) affects the electrical properties of low-density polyethylene (LDPE) when exposed to magnetic fields at various temperatures, revealing that BiFeO enhances the crystallinity and structure of LDPE.
- - Nanocomposites with a 2% mass fraction of BiFeO displayed increased breakdown strength compared to pure LDPE, particularly after magnetization, leading to better dielectric properties.
- - Observations noted that the addition of BiFeO resulted in a more ordered particle distribution and that the conductive current in the composite was lower than in pure LDPE, with decay rates in current differing based on magnetization treatment.
Article Abstract
The purpose of this paper is to study the effect of nano-bismuth ferrite (BiFeO) on the electrical properties of low-density polyethylene (LDPE) under magnetic-field treatment at different temperatures. BiFeO/LDPE nanocomposites with 2% mass fraction were prepared by the melt-blending method, and their electrical properties were studied. The results showed that compared with LDPE alone, nanocomposites increased the crystal concentration of LDPE and the spherulites of LDPE. Filamentous flake aggregates could be observed. The spherulite change was more obvious under high-temperature magnetization. An agglomerate phenomenon appeared in the composite, and the particle distribution was clear. Under high-temperature magnetization, BiFeO particles were increased and showed a certain order, but the change for room-temperature magnetization was not obvious. The addition of BiFeO increased the crystallinity of LDPE. Although the crystallinity decreased after magnetization, it was higher than that of LDPE. An AC test showed that the breakdown strength of the composite was higher than that of LDPE. The breakdown strength increased after magnetization. The increase of breakdown strength at high temperature was less, but the breakdown field strength of the composite was higher than that of LDPE. Compared with LDPE, the conductive current of the composite was lower. So, adding BiFeO could improve the dielectric properties of LDPE. The current of the composite decayed faster with time. The current decayed slowly after magnetization.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8399396 | PMC |
| http://dx.doi.org/10.3390/polym13162622 | DOI Listing |
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