超强度的自我愈合的水凝通过等级能量协同消耗
Zhi Zhao1, Yurong Li1,2, Haibin Wang1
1Key Laboratory of Advanced Functional Materials, Education Ministry of China, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|July 28, 2023
概括
研究人员使用独特的等级架构开发了超强的水凝. 这种新的方法实现了非凡的机械性能和自我修复能力,为创建先进材料提供了更简单,更通用的方法.
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
- 生物材料工程 生物材料工程
背景情况:
- 传统的水凝具有高含水量和均的质地,限制了它们的机械性能.
- 现有的增强水凝强度的方法,如结合抗拉力组或结构异质性,增加合成复杂性和成本.
- 这些常规方法在制造强和多功能水凝材料方面具有有限的适用性.
研究的目的:
- 开发一种用于制造具有增强机械性能的超强凝的新策略.
- 探索一个独特的等级架构,以提高水凝性能.
- 为了实现水凝材料的自我愈合能力和可调节的机械特性.
主要方法:
- 使用独特的分层架构制造水凝,由化学合的自组装单元组成.
- 自组装单元之间的工程关联能量消耗.
- 机械性质的表征,包括拉伸强度,断裂应变和性.
主要成果:
- 实现了超坚固的水凝,可调节的抗拉强度高达19.6 MPa,破裂应变率为20,000%,性为135.7 MJ cm-3.3.
- 在制造的水凝图书馆中证明了自我愈合的能力.
- 超过了之前记录的水凝材料的机械性能基准.
结论:
- 已经建立了一个通用和可控制的战略,用于制备超强硬的水凝.
- 层次架构方法为设计先进的水凝材料提供了一种可预测的方法.
- 开发的水凝具有卓越的机械强度和自我愈合特性,为新的应用开辟了道路.
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