Abstract
With the rapid development of superconducting technology, electrical properties of insulating materials in the low temperature have recently gained more and more attention. In this paper, the Alternating Current (AC) and negative Direct Current (DC) breakdown strength of polyimide (PI), polyester (PET) and polytetrafluoroethylene (PTFE) have been tested in room temperature and liquid nitrogen environment respectively by using different electrode system. The results show that the negative DC breakdown strength of these three kinds of material in the liquid nitrogen is lower than that in room temperature, and the AC breakdown strength of PTFE and PI in liquid nitrogen has a little increase than that in room temperature,but PET slightly decreases.
Sign-in/Register to access full text options 
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.
