Abstract
The polyimide (PI) film is used as the internal insulation system in the high-temperature superconducting transformer due to its excellent mechanical and electrical performance. Many researchers had found that nanoparticle mixing can improve the polymer’s insulation properties. The partial discharge(PD) will induce the deterioration and even breakdown of the insulating materials. In the paper, the PI films modified by nano-A1<inf>2</inf> O<inf>3</inf> were prepared in situ polymerization. The particle size of Al<sup>2</sup> O<inf>3</inf> nanoparticle used in this research is 10 nm, and the mass fraction is 1wt%, 3wt%, 5wt% and 7wt%, respectively. The volume resistivity, surface resistivity and partial discharge initial voltage (PDIV) are measured in liquid nitrogen(LN). The experimental results indicate that adding of 3wt% nanoparticle is the optimum ratio to suppress the PD in the PI films.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
