Comparative Study on the Performance of Itaconic Acid Based Epoxy Resin and Bisphenol A Epoxy Resin
Liu Hechen1, Guo Zhanpeng1, Li Yan1, Zhou Songsong2, Wu Xuan1
1. Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense North China Electric Power University Baoding 071003 China; 2. China Electric Power Research Institute Beijing 100192 China
Abstract：In this paper, in order to explore the application prospects of environmental-friendly bio-based epoxy resins in the electrical field, the advantages and disadvantages of itaconic acid-based epoxy resin (EIA), a bio-based resin, were compared with bisphenol A epoxy resin (DGEBA) in terms of physical and chemical parameters, heat resistance, mechanical properties, and electrical insulation properties. The results show that the epoxy equivalent of EIA is close to that of DGEBA, and both resins have typical viscosity-temperature characteristics, and the rheological properties of EIA are slightly better than that of DGEBA, ensuring its processability; the glass transition temperature and 5% thermal cracking temperature of EIA curing system are lower than DGEBA respectively; the breakdown voltage of EIA curing system (32.1kV/mm) is slightly lower than DGEBA (36.7kV/mm), while the leakage current is about 13.4% higher than that of DGEBA, indicating that the electrical insulation performance of EIA is slightly weaker than that of DGEBA; the mechanical performance test shows that the tensile strength and flexural strength of EIA curing system are 15.3% and 28.5% lower than that of DGEBA respectively. At the same time, the water absorption of EIA curing system is slightly higher than DGEBA and has strong high-temperature hydrolysis ability, which may limit its outdoor application prospects; In summary, as a matrix resin, EIA is inferior to DGEBA in terms of mechanics, thermo stability, and electrical strength due to the influence of crosslink density and intramolecular ester bonds. However, the heat resistance and viscosity properties are similar, and EIA is more excellent in terms of degradability and environmental protection, etc. In the later stage, its performance can be improved by increasing the degree of crosslinking and blending with other types of epoxy resins such as bisphenol A.
刘贺晨, 郭展鹏, 李岩, 周松松, 吴璇. 衣康酸基环氧树脂和双酚A环氧树脂性能对比研究[J]. 电工技术学报, 2022, 37(9): 2366-2376.
Liu Hechen, Guo Zhanpeng, Li Yan, Zhou Songsong, Wu Xuan. Comparative Study on the Performance of Itaconic Acid Based Epoxy Resin and Bisphenol A Epoxy Resin. Transactions of China Electrotechnical Society, 2022, 37(9): 2366-2376.
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2022, Vol. 37 
