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相关概念视频

Classification and Mechanical Properties of Synthetic Polymers01:28

Classification and Mechanical Properties of Synthetic Polymers

Synthetic polymers are classified as elastomers, fibers, or plastics based on their crystallinity. Crystallinity, the degree of long-range order in the solid state, influences the mechanical properties (stretching or contracting) of elastomers. Elastomers are flexible polymers that can expand or contract easily upon the application of an external force. They have numerous crosslinks that pull them back into their original shape when stress is removed. Silicones, for instance, are highly elastic...

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基于生物启发的聚烯的功能分级材料和元材料模拟了尾主界面.

Lina M Rojas González1, Naeim Ghavidelnia1,2, Christoph Eberl1,2,3

  • 1Department of Microsystems Engineering, University of Freiburg, D-79110 Freiburg, Germany.

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灵感来自于的脚.

关键词:
生物灵感的生物灵感数字图像相关性相关性数字图像相关性用纤维增强的聚烯增强纤维的聚烯.接口材料接口材料接口可编程故障的可编程故障

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科学领域:

  • 材料科学 材料科学 材料科学
  • 生物启发工程 生物启发工程
  • 聚合物科学 聚合物科学

背景情况:

  • 生物系统为增强工程材料寿命提供了洞察力.
  • 欧洲 (Viscum album) 证明了与宿主树的终身,机械稳定的接口.
  • 这种接口具有V形结构,具有线性化和细胞壁梯度.

研究的目的:

  • 为了模仿尾主机接口来创建先进的聚合物材料.
  • 开发一种生物灵感材料系统,具有V形,功能分级的接口.
  • 研究分级材料特性对机械性能的影响.

主要方法:

  • 挤压成型和热压,以创建一个聚烯材料系统.
  • 整合纯粹和玻璃纤维增强聚烯的V形梯度.
  • 用于量化纤维含量和方向的微光扫描.
  • 拉伸测试和数字图像对应用于机械分析.

主要成果:

  • 一个V形接口与玻璃纤维含量 (0-30%) 的逐步过渡成功制造.
  • 模量增加了38%,最终抗拉强度增加了62%,与V形接口.
  • 通过操纵纤维含量来实现对局部应变行为和故障点的空间控制.
  • 梯度原理已经成功地应用于超材料结构.

结论:

  • 的定策略为生物灵感材料设计提供了一个模型.
  • 具有V形接口的功能分级材料提高了机械性能和故障控制.
  • 这种方法为开发具有可编程性能的先进材料提供了一个框架.