自愈
耐久性
材料科学
透明度(行为)
透射率
压力(语言学)
弯曲
计算机科学
复合材料
航天器
结构工程
光电子学
工程类
航空航天工程
哲学
病理
医学
替代医学
语言学
计算机安全
作者
Young Nam Kim,Juheon Lee,Yoon-Sik Lee,Jaewoo Kim,Haksoo Han,Yong Chae Jung
标识
DOI:10.1016/j.apmt.2021.101226
摘要
Colorless polyimides (CPIs) with outstanding mechanical properties are used as essential materials in the production of future flexible display panels, foldable windows, and spacecraft cockpit materials. However, under repetitive stress and deformation, fatigue fractures caused by cracks and radio waves may act as critical determinants of the properties and duration of the material. To solve this problem, the present study developed a CPI capable of self-healing, wherein the transparency and any damage caused by external stress are rapidly and easily restored. Our synthesized CPI films showed ultra-transmittance (> 95%) and excellent self-healing efficiency (> 98%) with a simultaneously induced multi exchange network. Notably, the films exhibited excellent mechanical properties even after a bending fatigue test involving more than 10,000 cycles. This study therefore suggests a new type of CPI with a self-healing function and shows that the trade-off between the durability and functionality can be completely resolved.
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