相关实验视频

Updated: Jun 18, 2025

Towards Biomimicking Wood: Fabricated Free-standing Films of Nanocellulose, Lignin, and a Synthetic Polycation

Towards Biomimicking Wood: Fabricated Free-standing Films of Nanocellulose, Lignin, and a Synthetic Polycation

Published on: June 17, 2014

基于素碳气凝/泡双网络的相变复合材料,用于多源能源采集和卓越的EMI屏蔽

Ruihan Yan¹, Zan Huang², Ying Chen¹

¹Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.

International journal of biological macromolecules

|July 30, 2024

概括

为先进的电子设备开发了新的复合相变材料 (PLGN). 这些材料提供了出色的热管理和电磁干扰屏蔽,对于现代电子设备至关重要.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
储能储能储能储能储能储能

背景情况:

现代电子设备面临着包装密度增加的挑战,导致电磁干扰 (EMI) 和热积累.
人们越来越需要先进的材料,这些材料可以同时管理热能,并对EMI进行屏蔽.
开发具有集成功能的复合相变材料 (PCM) 对下一代电子产品至关重要.

研究的目的:

合成和表征具有双重能力的新型复合相变材料 (PLGN).
评估开发材料的热管理,电磁干扰屏蔽和光热/电热转换特性.
评估这些材料适用于电子设备中的应用,需要高效的热和EMI管理.

主要方法:

通过真空辅助吸附,冷干燥和热制造//rGO双网架 (LGN) 的制造.
用真空浸将聚乙烯甘醇 (PEG) 封装到LGN中,以创建形状稳定的PEG/NiF/LN-rGO (PLGN) 复合相变材料.
描述不同频率的热稳定性,能量储存密度,电导率和电磁干扰屏蔽效率 (SE).

主要成果:

合成的PLGN复合材料表现出强大的稳定性,卓越的热管理和显著的EMI屏蔽效率.
PLGN-3表现出高化能 (140.95 J/g) 和相对能效率 (98.72%),这表明能量储存能力优越.
PLGN-3实现了高电导率 (1597.5 S/cm),并证明了有效的光热和电热转换,EMI屏蔽效率在8.2-12.4 GHz范围内达到69.9dB.

结论:

开发的PLGN复合相变材料显示出解决电子设备中的热积累和EMI问题的巨大潜力.
综合热管理和EMI屏蔽功能使PLGN成为先进电子系统应用的有希望的候选人.
这些材料为提高日益复杂的电子设备的性能和可靠性提供了可行的解决方案.

关键词:

复合相变材料的复合相变材料电磁干扰屏蔽电磁干扰屏蔽热能管理热能管理

更多相关视频

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

Published on: February 20, 2019

Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-walled Carbon Nanotubes in the Study of Thermopower Waves

Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-walled Carbon Nanotubes in the Study of Thermopower Waves

Published on: April 10, 2015

相关概念视频

Energy Stored In A Coaxial Cable

Energy Stored In A Coaxial Cable

A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic...

Capacitor With A Dielectric

Capacitor With A Dielectric

Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...

Batteries and Fuel Cells

Batteries and Fuel Cells

A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...