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为折叠电阻制造一个动态能量消散层次的非共价网络

Junhui Luo¹, Di Zhang¹, Siduo Song¹

¹State Key Laboratory of Advanced Polymer Materials, College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China.

Advanced materials (Deerfield Beach, Fla.)

|November 4, 2025

概括

这项研究引入了一种新的动态交叉连接网络,用于无色聚胺-胺 (CPAI) 薄膜,以防止柔性显示器的曲. 这种创新材料显著提高了用于先进电子应用的折叠耐久性和可靠性.

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
纳米技术纳米技术

背景情况:

超薄的柔性显示器由于应力诱导的曲而面临可靠性挑战.
现有的材料缺乏足够的耐用性,以应对重复的机械应力.

研究的目的:

开发一种用于超薄柔性显示器的新材料,可提高可靠性和抗性.
研究一个层次化的动态交叉连接网络,以改善压力消散.

主要方法:

在无色聚胺-胺 (CPAI) 薄膜中开发协同交联网络,使用结,金属协调和-π 相互作用.
多尺度表征和分子动力学 (MD) 模拟来分析三模式能量消散机制.
机械测试 (折叠耐力) 和实时监测阻力变化和应力分布.

主要成果:

用修改的CPAI (CPAI-Ca) 显示,折叠耐力提高了10倍 (半径为0.5毫米的20,000个折叠),曲率降低了92.8%.
在20万个折叠周期后,材料的阻力变化最小 (ΔR/R0 = 7.35%).
实现了高的热稳定性 (Tg = 398.77 °C),光学透明度 (T550 = 89.38%) 和模量 (E = 5.47 GPa).

结论:

层次化的动态交叉连接网络有效地在多个尺度上分散能量,提高材料可靠性.
CPAI-Ca为超薄柔性显示应用的需求提供了一个有前途的多功能材料解决方案.
开发的材料克服了当前灵活显示技术的主要局限性.

关键词:

电离π 相互作用无色聚胺-胺薄膜是一种无色的聚胺-胺薄膜.灵活的显示器离子协调债券离子协调债券这是一个超分子网络.

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