相关实验视频
Updated: Jul 30, 2026

08:45
Fabrication of Spatially Confined Complex Oxides
Published on: July 1, 2013
9.5K
具有高氧化物负荷的可拉伸复合材料
Yinglin Zhi1, Yan Shao1,2, Rui Xia1
1Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
Nature communications
|April 15, 2025
概括
研究人员为氧化物/弹性体材料开发了一种新的界面复合材料设计. 这一突破允许高氧化物含量和特殊的伸展性,克服了传统复合材料的局限性.
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:
- 氧化物/弹性体复合材料将氧化物的功能与弹性体的灵活性相结合.
- 高填充物负载通常会因为弹性降低而损害弹性体的伸展性.
- 现有的方法难以平衡高氧化物含量与机械可变性.
研究的目的:
- 设计高氧化物分数和增强伸展性的氧化物/弹性体复合材料.
- 为了克服填充物加载和复合材料的机械性能之间的权衡.
- 开发一种用于创建先进功能复合材料的多功能方法.
主要方法:
- 开发了一种界面复合材料设计,最大限度地提高结合强度,同时最大限度地减少氧化物-弹性体接触面积.
- 在水油接口上使用马兰戈尼联合组装工艺.
- 在各种氧化物类型 (光学,电气,磁性,热) 中证明了适用性.
主要成果:
- 对于含有80体积%氧化物的复合材料,在断裂时达到500%的延长,比散装复合材料的20%显著改善.
- 接口设计几乎独立于氧化物大小,组成,几何和功能.
- 与散装复合材料相比,证明了优越的磁性执行,较低的热阻和更好的符合性.
结论:
- 接口复合材料设计成功实现了高氧化物负荷和大伸展性.
- 马兰戈尼联合组装工艺为创建先进的功能性材料提供了一个多功能平台.
- 这些发现对智能和电子系统具有重大意义,这些系统需要灵活的功能材料.
相关概念视频
Poisson's Ratio
Poisson's ratio is a material property that indicates their stress response. It explains the connection between the elongation or compression a material undergoes in the direction of an applied force and the contraction or expansion it experiences perpendicular to that force. When a slender bar is loaded axially, it stretches in the direction of the force and contracts laterally. Poisson's ratio is the negative ratio of this lateral contraction to the axial elongation. The negative sign ensures...
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...
Reinforcements in Concrete
Reinforced concrete is a composite material used extensively in construction, combining the compressive strength of concrete with the tensile strength of steel. This synergy is essential as concrete, while excellent at resisting compression, is weak under tension. Steel bars, or rebars, are embedded in the concrete to handle these tensile forces. The choice of steel is strategic; it shares a similar coefficient of thermal expansion with concrete, which ensures uniformity in response to...
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...
Superplasticizers
Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
Additives and Fillers in Concrete
Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
The...

