通过弱电磁波对高导电性聚合物复合材料的凝聚颗粒进行凝聚
Xiaohan Wang1,2, Yue Zhang1,2, Yan Peng1,3
1School of Chemistry and Chemical Engineering, Southeast University, Nanjing, China.
Nature communications
|November 25, 2025
概括
弱电磁波 (EMW) 可以通过连接微粒来优化聚合物复合材料中的导电网络. 这种新的EMW策略大大降低了电阻,为导电材料提供了具有成本效益的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 电气工程 电气工程
背景情况:
- 电导性聚合物复合材料对于电子产品至关重要.
- 高成本与由于填充剂加载而实现高导电性有关.
研究的目的:
- 研究使用弱电磁波 (EMW) 来优化聚合物复合材料中的导电网络.
- 开发一种具有成本效益的方法来提高聚合物复合材料的电导率.
主要方法:
- 利用弱电磁波 (EMW) 来影响聚合物复合材料中的微粒子排列.
- 在EMW暴露下研究金属微纤维聚合物复合材料的绝缘体-导体过渡.
- 分析了电磁波引起的导电率变化的快速反应和稳定性.
主要成果:
- 证明弱电磁波可以凝聚微粒,优化导电路径.
- 在弱电磁波 (10-6mW) 下,在柔性复合材料中观察到显著的绝缘体-导体过渡 (50MΩ到1kΩ).
- 使用EMW策略实现了极快的响应 (0.34μs) 和高稳定性 (104个周期).
结论:
- 弱电磁波提供了一种可行的策略,通过优化填充网络来提高聚合物复合材料的电导率.
- 电磁波浪效应是快速的,稳定的,并且广泛适用于各种导体和聚合物.
- 这种方法为生产高导电性聚合物复合材料的传统方法提供了具有成本效益的替代方案.
相关概念视频
02:34Polymers
40.3K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
40.3K
02:34Polymers
23.2K
23.2K
00:57Cationic Chain-Growth Polymerization: Mechanism
2.8K
The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the...
2.8K