|
|||||
|
|
Surface potential decay of DC-corona-charged PET films on humid electrodes |
|
| Institution: | 1. School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;2. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;1. Department of Materials Science, Graduate School of Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan;2. Nishinippon Institute of Technology, Kitakyushu 803-0812, Japan |
| Abstract: | Surface potential decay measurement is a widely used tool to test the electrical properties of insulation materials. The aim of the present paper is to evaluate the effect of a humid electrode on the surface potential decay process. The experiments are performed on 1-mm thick samples of PET films (50 mm × 50 mm) in ambient air (temperature: 25 °C–29 °C; relative humidity: 42%–48%). The samples are placed on a grounded humid electrode (aluminum plate covered by a humid textile: 52 mm × 52 mm), and are charged by exposing them for 10 s to the negative DC corona discharge generated by a high-voltage wire-type dual electrode.The results show that the humid electrode has a significant influence on the surface potential evolution during the first moments after corona charging. Bipolar charge injection is the main physical mechanism that explains this potential decay. |
| Keywords: | Corona-charging Surface potential decay (SPD) Polyethylene terephthalate film Humid electrodes |
| 本文献已被 ScienceDirect 等数据库收录！ | |