导电性聚合物复合材料的透值和电导率,在二维空间中充满曲线纤维的导电性聚合物复合材料
Hui Yuan1, Huisu Chen1, Mingqi Li2
1Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, PR China. chenhs@seu.edu.cn.
Soft matter
|September 13, 2023
概括
纤维曲率显著影响导电聚合物复合材料 (CPC). 这项研究模拟曲线纤维,以预测透值,并优化电导率,以获得更好的CPC设计.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 物理 物理学 物理
背景情况:
- 设计导电聚合物复合材料 (CPC) 需要了解纤维曲率如何影响电气性能.
- 灵活导电纤维是先进CPC的关键组件,但它们的几何复杂性带来了挑战.
研究的目的:
- 量化纤维曲率对CPC的透行为和电导率的影响.
- 开发基于纤维几何学的透值和有效导电性的预测模型.
主要方法:
- 开发了一种软曲线圆盘矩形 (CDCR) 的模型,以表示聚合物矩阵中的纤维.
- 采用CDCR间接触检测算法和有限尺寸缩放来确定透值.
- 利用电阻网络搜索算法 (RNSA) 来建模有效导电性.
主要成果:
- 透值 (φc) 随着面积比 (α) 的增加而下降,随着曲角度 (θ) 的增加而增加.
- 开发了一个形状独立的功率定律公式,将透值与几何参数联系起来.
- 建立了基于正常化减少密度的有效导电率 (σeff) 的功率定律模型.
结论:
- 该研究提供了可靠和通用的模型,用于预测CPC中的透和导电性.
- 结果为设计具有量身定制电气性能的CPC提供了理论基础.
- 提出的方法和模型与现有数据和模拟进行验证.
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