通过一个无序的键网络,在室温自愈的水borne玻璃型聚氨通过一个无序的键网络
Chenxi Huyan1, Chuncheng Pan2, Qiuzhen Chen1
1State Key Laboratory of Fluorine and Nitrogen Chemicals, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P.R. China. liudong@xjtu.edu.cn.
Materials horizons
|August 11, 2025
概括
这项研究引入了一种新的玻璃状聚氨,在室温下快速自我愈合. 这种可持续材料具有显著的机械强度和可回收性,符合碳中和目标.
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
- 可持续工程 可持续工程
背景情况:
- 对于具有自我修复性质的可持续材料的需求正在增加,以实现节能应用.
- 在聚合物中实现玻璃性质和室温自我愈合是具有挑战性的,因为对网络移动性的要求相矛盾.
研究的目的:
- 开发一种水性玻璃型聚氨,具有内在的室温自我愈合能力.
- 研究玻璃聚合物中键结构和自我愈合机制之间的关系.
主要方法:
- 一种具有高密度的无序键的水性聚氨的合成.
- 机械测试,以评估模和屈服强度.
- 在环境条件下评估自我愈合效率.
- 通过溶解和再加工进行可回收性测试.
主要成果:
- 开发的聚氨具有1.5 GPa的扬模量和39.1 MPa的屈服强度.
- 该材料在室温下表现出快速的自我愈合.
- 无序的键促进了有限的链路流动性和网络重新配置的动态交换.
- 该聚合物可以在没有性能损失的情况下回收到乙醇中.
结论:
- 创造了一种具有强大的机械性能和室温自我愈合的新型玻璃型聚氨.
- 该材料独特的键网络是其双重功能的关键.
- 这种聚氨平台显示了可持续和可回收应用的巨大潜力.
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