邢文琪,覃众垚,郭建超,张刚

• 1:宝鸡文理学院物理与光电技术学院

摘要(Abstract)：

高分子复合材料具有单个高分子材料所不具备的优异性能。为探究电场作用下二元高分子共混体系微观组织演化及动力学过程，基于形貌和各向异性参数，采用相场法进行了数值模拟。采用高精度的半隐式傅立叶谱法，求解修改的非线性Cahn-Hilliard-Cook (CHC)扩散方程。模拟结果表明，外加电场对高分子共混体系相分离的微观组织及动力学过程有着显著影响。在外加电场作用下，随着时间进行，各向异性参数逐渐增大，最终达到稳定，并且电场越强，各向异性参数的初始值越大。此外，体系的初始成分对电场取向的动力学过程影响显著，尤其对具有临界成分的体系，电场的取向作用更强且更显著。最后，研究揭示了电场对高分子共混物相分离过程的作用机理。研究结论有助于设计并指导合成具有各向异性微观结构及优异性能的高分子复合材料。

关键词(KeyWords)： 电场;二元高分子共混体系;相分离;相场模拟;微观组织

Abstract:

Keywords:

基金项目(Foundation): 宝鸡文理学院大学生创新创业训练计划资助项目成果(2021XJ115)

作者(Author): 邢文琪,覃众垚,郭建超,张刚

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