通过多层浮动组装方法制造的高度无异型,热导和可拉伸的碳纤维/纳米管弹性体复合材料
Dalim Leang1, Hyung Mo Jeong1, Changgu Lee1
1School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, South Korea.
ACS applied materials & interfaces
|June 12, 2025
概括
这项研究开发了一种新的碳纤维和碳纳米管弹性体复合物,用于灵活电子产品的高效热管理. 该材料实现了高导热性和伸展性,对于微型设备至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 聚合物科学 聚合物科学
背景情况:
- 灵活的电子设备需要先进的热管理解决方案.
- 现有的弹性体复合材料面临着填充物加载和机械性能方面的挑战.
- 高热导率和伸展性对于设备的性能和寿命至关重要.
研究的目的:
- 为灵活的电子产品开发一种导热和可拉伸的弹性体复合材料.
- 为了克服传统的填料混合方法的局限性.
- 为了增强微型电子设备的散热.
主要方法:
- 使用多层浮式组装方法 (FAM) 制造碳纤维 (CFs) /碳纳米管 (CNTs) 弹性体复合材料.
- 调整CFs以创建定向热传导路径.
- 将CNT集成为桥梁,以减少界面热阻.
主要成果:
- 在60重%的CFs/CNTs下,达到32.6W/m·K的高异构平面内导热率.
- 在高填充负载下表现出极好的伸展性,应变率超过45%.
- 制造了一种适合小型化的超薄 (200微米) 复合材料.
结论:
- CFs/CNTs弹性复合材料为灵活和可拉伸的电子产品提供了卓越的热管理.
- 多层FAM通过控制填充剂对齐和降低应力度来实现高性能.
- 这种材料是对紧型电子设备的热挑战的有希望的解决方案.
相关概念视频
Bending of Members Made of Several Materials
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
Classification and Mechanical Properties of Synthetic Polymers
Synthetic polymers are classified as elastomers, fibers, or plastics based on their crystallinity. Crystallinity, the degree of long-range order in the solid state, influences the mechanical properties (stretching or contracting) of elastomers. Elastomers are flexible polymers that can expand or contract easily upon the application of an external force. They have numerous crosslinks that pull them back into their original shape when stress is removed. Silicones, for instance, are highly elastic...
Fiber Reinforced Concrete
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
Ferrocement
Ferro-cement is a distinctive construction material that represents an innovative variant of reinforced concrete, characterized by its unique composition and the method by which it is formed. Unlike standard reinforced concrete, which relies on larger steel bars for reinforcement, ferro-cement utilizes densely packed layers of mesh or fine rods, fully encased in cement mortar. This composition allows for the creation of structures that are significantly thinner and more flexible than their...


