Mingru Li, Bin Zhou, Kai Shang, Huan Niu, Jiuhui Zhao, Liuhao Jiang, Jiacai Li, Yang Feng, Shengtao Li
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Bisphenol-A epoxy resin with excellent breakdown strength and competitive glass transition temperature
In this research, we optimized both the molecular and crosslinked structures of epoxy resin to achieve exceptional breakdown strength and a competitive glass transition temperature (Tg). Through simulations, we found that the epoxy molecule with a polymerization degree of 0 (Ep0) exhibited a wider bandgap (Eg) and developed a dense crosslinked structure with higher density after crosslinking. This countered the negative impact of a reduced benzene structure, enhancing molecular rigidity and improving Tg. We isolated Ep0 components and prepared samples demonstrating a significant 22.18 % increase in breakdown strength (366.39 kV/mm vs. 299.87 kV/mm for commercial EP) and a Tg of 140.91 °C. The superior insulation properties of our product stem from its higher Eg molecular structure, while the competitive Tg is attributed to its compact crosslinked structure and increased density.
期刊介绍：
Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline.
Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.
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