Abstract
In order to identify the charged states of power equipment through electrochromism of insulating materials, a regular/irregular poly(3-hexylthiophene) (reg-P3HT/irreg-P3HT) blend film is prepared. The experiment study shows that the regP3HT is evenly distributed as nano-scale crystallite morphology on top of the blend film. As the content of irreg-P3HT increases, the blend film shows better insulating performance in the direction of film thickness. When the content of irreg-P3HT reaches 95%, the blend film has a power frequency dielectric constant of 5.86, a volume resistivity of 3.2 × 1012 Ω·cm, and a DC breakdown strength of 113 kV/mm. By applying charge accumulation spectroscopy, it is found that when the field strength reaches over 40 kV/mm, the space charges mainly accumulate in irreg-P3HT, and the blend film’s absorption intensity increases with the field strength at 450 nm, triggering the electrochromism of the insulating film. This work provides a new path for testing the charged states of insulating materials of power equipment.
| Translated title of the contribution | Electrochromic and Dielectric Characteristics of Advanced Insulating Polymer under Various Electric Fields |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 144-152 |
| Number of pages | 9 |
| Journal | Zhongguo Dianli/Electric Power |
| Volume | 54 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 2021 |
