用于复合材料的可溶液加工,长长的液体金属颗粒,具有增强的热管理
Ren-Mian Chin1, Lijun Zhou1, Mohammad H Malakooti1,2,3
1Department of Mechanical Engineering, University of Washington, Seattle, Washington 98195, United States.
ACS applied materials & interfaces
|December 15, 2025
概括
使用一种基于新型溶液的方法合成延长型液态金属 (LM) 颗粒,克服了为先进电子产品制造异型材料的挑战. 这些粒子增强复合材料的导热性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 流体动力学 流体动力学
背景情况:
- 由于表面张力,液体金属 (LM) 滴自然形成球体,阻碍了异构形状的形成.
- 不同类型的功能材料对于可伸缩电子产品和可穿戴设备等应用至关重要.
研究的目的:
- 开发一种基于溶液的方法来合成稳定,延长的液体金属颗粒.
- 研究这些颗粒在弹性体矩阵中的结合和对齐,以提高材料性能.
主要方法:
- 使用高强度的混合工艺与表面修饰剂 (例如,聚乙烯) 结合,以创建延长的- (EGaIn) 微粒.
- 将功能化的EGaIn颗粒纳入未固化的弹性体中,并采用印刷和医生刀片技术进行颗粒对齐.
- 进行了数值模拟,以验证粒子形态学对复合材料性能的影响.
主要成果:
- 成功合成了稳定,长长的EGaIn粒子,当它们嵌入到弹性体中时,可以保持它们的高比例.
- 在LM-elastomer复合材料中通过对延长颗粒的定向对齐来实现异型微结构.
- 与异型复合材料相比,在异型复合材料中证明了增强的散热和导热性.
结论:
- 开发的以溶液为基础的方法可以为先进的材料应用合成异构型液体金属颗粒.
- 长长的,对齐的液体金属颗粒显著提高了弹性复合材料的热性能.
- 这些可溶液加工的液体金属颗粒为各种制造方法提供了多功能,可编程的液态功能单元.
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