具有高度拉伸性和自我修复性的石墨烯封装液体金属复合材料,用于多功能应用
Li-Chuan Jia1, Zhi-Xing Wang1, Shuang-Qin Yi2
1College of Electrical Engineering, Sichuan University, Chengdu, 610065, China.
Small (Weinheim an der Bergstrasse, Germany)
|November 14, 2025
概括
石墨烯纳米板封装液体金属 (LM) 来创建导电,可拉伸和自我修复的聚合物复合材料. 这种新的混合网络克服了先进电子产品的LM泄漏和导电性挑战.
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:
- 液体金属 (LM) 聚合物复合材料因LM的形状和流动性而面临网络形成和泄漏的挑战.
- 现有的复合材料在低LM含量时难以实现高效导电性,在高含量时难以防止泄漏.
研究的目的:
- 开发一种高性能液体金属基聚合物复合物,使用石墨烯纳米板 (GNS) 来提高电导率,抗泄漏,伸展性和自我愈合性能.
- 在超分子聚氨尿素 (PUU) 矩阵中创建GNS和LM的混合网络.
主要方法:
- 液体金属 (LM) 滴滴与石墨烯纳米片 (GNS) 封装,以形成GNS@LM.
- 通过将GNS@LM纳入超分子聚氨尿素矩阵,制造GNS@LM/PUU复合材料.
- 电导率的表征,防泄漏行为,伸展性和自我愈合特性.
主要成果:
- 一种含有2.0体积%GNS的复合材料在25体积%GNS@LM时,达到548.1S/m的优异电导率.
- 在45体积%的GNS@LM含量下观察到出色的抗泄漏行为.
- 该GNS@LM/PUU复合材料具有很高的伸展性 (902.4%的应变) 和自愈效率 (96.0%的导电性恢复在80°C24小时).
结论:
- 石墨烯纳米板有效地弥合液体金属滴,形成高效的导电通道,并防止聚合物复合材料的泄漏.
- 开发的GNS@LM/PUU复合材料表现出卓越的多功能特性,包括高导电性,伸展性和自我愈合性.
- 这种简单的策略为制造用于集成电子,热管理,屏蔽和朱尔加热应用的先进液体金属基复合材料提供了有前途的途径.
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