DC surface flashover characteristics of epoxy resin in high vacuum from 10 K to 299 K

IF 1.8 3区工程技术 Q3 PHYSICS, APPLIED

Cryogenics Pub Date : 2025-03-26 DOI:10.1016/j.cryogenics.2025.104067

Di Jiang , Yu Feng , Hongwei Zhang , Zhixiong Wu , Zhicong Miao , Rongjin Huang , Laifeng Li , Yuan Zhou

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引用次数: 0

Abstract

Understanding the low-temperature electrical properties of epoxy resin is crucial for the design of safe and reliable insulation structures of superconducting magnet systems. Actually, superconducting magnets are used in a wide range of temperatures for different applications, but the current electrical property testing of the epoxy resin is mainly single temperature. Herein, an efficient integrated electrical testing system in the cryogenic to room temperature range has been built by using a G-M cryocooler (Gifford-McMahon) as the cold source. The DC surface flashover characteristics of the epoxy resin were tested at 10, 20, 40, 80, 120, 160, 200, 240, 280, and 299 K in high vacuum helium, and Weibull distribution was obtained. The results show that the flashover strength of epoxy resin does not increase monotonically with the temperature decrease. This work fills the gap in the electrical performance of epoxy resin at multiple temperatures between 10 K to 299 K and helps to more fully comprehend the insulation properties of epoxy resins.

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来源期刊

Cryogenics 物理-热力学

CiteScore

3.80

自引率

9.50%

发文量

审稿时长

2.1 months

期刊介绍： Cryogenics is the world''s leading journal focusing on all aspects of cryoengineering and cryogenics. Papers published in Cryogenics cover a wide variety of subjects in low temperature engineering and research. Among the areas covered are: - Applications of superconductivity: magnets, electronics, devices - Superconductors and their properties - Properties of materials: metals, alloys, composites, polymers, insulations - New applications of cryogenic technology to processes, devices, machinery - Refrigeration and liquefaction technology - Thermodynamics - Fluid properties and fluid mechanics - Heat transfer - Thermometry and measurement science - Cryogenics in medicine - Cryoelectronics