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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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可拉伸材料的机械透明粘合剂

Gabriela Moreira Lana1, Cornelia Meissner1, Siddhant Iyer1

  • 1Department of Polymer Science and Engineering, University of Massachusetts Amherst, ConteCenter for Polymer Research, 120 Governors Drive, Amherst, Massachusetts 01003, United States.

ACS applied materials & interfaces
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概括

这项研究介绍了一种用于柔性材料的新型环保粘合剂. 双网络系统在没有溶剂的情况下创建了强大的,可适应的键,使得"机械透明"具有持久的附着性.

关键词:
酸粘合剂是一种酸粘合剂.织物 面料 织物 面料微相分离的微相分离方法自动组装的自动组装机可伸缩的可伸缩的织联合 织联合三重阻断共聚合物的共聚物.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 聚合物化学 聚合物化学
  • 粘附科学 粘附科学 粘附科学

背景情况:

  • 由于表面特性和变形要求,连接软,柔性材料,如织物和泡是具有挑战性的.
  • 传统的方法往往涉及破坏性过程 () 或有害的溶剂,用于机械互锁.
  • 现有的粘合剂在巨大的压力下难以保持粘合力和机械完整性.

研究的目的:

  • 开发一种生物灵感,无溶剂的粘合剂,以与可拉伸材料无集成.
  • 创建一种能够形成机械透明接的双网粘合剂.
  • 为柔性材料提供可持续和高性能粘合解决方案.

主要方法:

  • 使用了一种ABAtriblock共聚合物 (PMMA-PnBA-PMMA) 与自组装的PMMA微域和PnBA矩阵.
  • 引入了一种二次聚乙烯酸 (PnBA) 网络,用于结构锁定和可调节性质.
  • 采用兼容的活性单体来调动共聚物以实现无溶剂结合.

主要成果:

  • 实现可调整的机械性能 (Young 的模量: 0.17-1.18 MPa) 与各种基板相匹配.
  • 展示了创建"机械透明"的方法,在巨大的压力下保持完整性.
  • 开发了一种环保,高性能的粘合剂,不含有害溶剂.

结论:

  • 双网粘合剂为粘合柔性和可拉伸材料提供了可持续和有效的解决方案.
  • 生物灵感的方法克服了传统连接方法的局限性.
  • 这项技术可以为工业应用提供耐用,可适应和环保的粘合.