针对电工树脂环保化及高性能化的应用需求，本项目提出利用绿色环保且耐高温的松香基环氧树脂（MPAER）对石油基双酚A型环氧树脂（DGEBA）进行共混改性，在显著提高共混树脂性能的同时促进可再生资源的利用及环境保护。合适的配比不仅有助于提高共混树脂耐热性能，也可一定程度上改善其力学及电气性能，但若MPAER含量过高则会导致体系脆性增大。如何确定最佳配比并揭示共混改性机理是研究的关键和难点。本项目拟通过建立MPAER/DGEBA共混体系分子动力学模型，探索树脂结构及配比对共混树脂微观、宏观参数的影响规律；试验评估不同MPAER/DGEBA共混体系下树脂的电气、耐热及力学性能，确定最佳配比，探索MPAER结构及含量对共混树脂宏观性能的影响规律。在此基础上，构建MPAER/DGEBA树脂微观结构-宏观性能关系并揭示共混改性机理。预期研究成果为新型环保环氧树脂在电工树脂中的应用提供了新的思路。

In view of the application demand for environmental protection and high performance of the electrical epoxy resin, this project proposes to use a rosin based epoxy resin (MPAER), which is environmental protected and high-temperature risistant, to blend and modify the traditional petroleum based bisphenol A-type epoxy resin (DGEBA), so as to promote the utilization of renewable resources and environmental protection while significantly improving the high-temperature resistance of the resin. The appropriate ratio of MPAER/DGEBA can not only improve the heat resistance, but also improve the mechanical and electrical properties of the blends to a certain extent. However, if the content of MPAER is too high, the brittleness of the system will increase. How to determine the best ratio and reveal the mechanism of blending modification is the key and difficult point of the project. In this project, the molecular dynamics model of MPAER/DGEBA blend system is established to explore the influence rule of resin structure and proportion on the micro and macro parameters of the blend resin. Further, the electrical property, heat resistance property and mechanical property of the resin under different MPAER / DGEBA blend system will be tested and evaluated. The tests will help to determine the best proportion and explore the influence rule of MPAER structure and content on the macro properties of the blend resin. On this basis, the structure-activity relationship between microstructure and macroscopic properties of MPAER/DGEBA resin and the mechanism of blending modification will be revealed. The expected research results provide a new idea for the application of new environmental protection epoxy resin for electrical resin.