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分子动力学建模用于确定聚合物单壁碳纳米管复合材料的弹性模块
Aigul Shamsieva1, Alexander Evseev1, Irina Piyanzina1
1Institute of Physics, Kazan Federal University, 420008 Kazan, Russia.
International journal of molecular sciences
|July 29, 2023
概括
计算机模拟预测了聚合物/单壁碳纳米管 (SWCNT) 的纳米复合材料特性. 最佳的SWCNT度,大小和结构是提高机械性能,避免降解的关键.
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
- 纳米技术 纳米技术
背景情况:
- 用碳纳米管增强的聚合物纳米复合材料提供了增强的性能.
- 单壁碳纳米管 (SWCNTs) 可以显著改善机械,电气和光学特性.
- 然而,最佳的强化严重取决于SWCNT的度和分散,过量可能会降低性能.
研究的目的:
- 用计算机模拟来预测聚合物/SWCNT纳米复合材料的机械性能.
- 研究SWCNT度,尺寸和结构对复合材料增强效率的影响.
- 确定用SWCNT增强的特定聚合物矩阵的机械行为的一般趋势.
主要方法:
- 利用计算机模拟来预测机械性能.
- 使用单元细胞张力模拟 (0.1%应变) 来确定弹性模块.
- 分析了具有不同SWCNT含量,大小和结构参数的纳米复合材料.
主要成果:
- 证明添加SWCNT并不总是提高聚合物的特性.
- 确定了用于加强的最佳SWCNT度范围;超过这个范围会导致财产退化.
- 基于SWCNT特征和聚合物矩阵 (PP,PEMA,PS) 的纳米复合材料的弹性模块预测.
结论:
- 计算机模拟对于预测聚合物/SWCNT纳米复合材料的机械性能是有效的.
- SWCNT增强的效率对纳米管的特性和度非常敏感.
- 了解这些关系对于设计具有定制机械性能的先进聚合物纳米复合材料至关重要.
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