在聚合物基纳米复合材料中冲击消散的分子起源
Zheng Li1, Zebei Mao1, Bo Wang1,2
1Department of Engineering Mechanics, Dalian University of Technology, Dalian, Liaoning 116024, China.
The journal of physical chemistry. B
|February 21, 2024
概括
一种新的方法量化了分子位置,以揭示聚合物复合材料中的冲击消散. 这有助于设计具有优异阻尼性能的材料.
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
- 机械工程 机械工程
背景情况:
- 了解聚合物复合材料的冲击散射对于材料设计至关重要.
- 现有的方法缺乏精确的量化分子水平的能量消散机制.
研究的目的:
- 引入一种用于量化分子位置的新方法,以解释冲击消散起源.
- 为了研究纳米填充剂含量和温度对能量消散的影响.
- 为了比较热固化和热塑性聚合物中的能量消耗.
主要方法:
- 开发了一种基于相对分子链位置的新量化方法.
- 在变形过程中分析了分子链和纳米填充器接口的冲击消散能量.
- 研究了不同纳米填充剂含量和系统温度的影响.
主要成果:
- 拟议的方法准确地反映了冲击消散能量.
- 纳米填充剂的含量和温度显著影响能量消耗.
- 在聚二甲基和聚乙烯-乙烯-之间观察到散射的差异.
结论:
- 这项研究为了解冲击消散的分子起源提供了一个工具.
- 该方法促进了具有增强阻尼特性的聚合物复合材料的设计.
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