轻质聚氨复合泡用于电磁干扰屏蔽,具有高吸收特性
Xiangyu Zheng1, Haiwei Zhang1, Rijia Jiang1
1School of Chemistry and Life sciences, Suzhou University of Science and Technology, Suzhou 215009, China.
Journal of colloid and interface science
|June 22, 2023
概括
结合Fe3O4@Polyvinyl alcohol (Fe3O4@PVA) 和石墨烯氧化物@银 (GO@Ag) 的新复合泡材料提供了卓越的电磁屏蔽. 这些轻质材料主要使用吸收,减少电子和航空航天应用的反射污染.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 电磁学 电磁学 电磁学 电磁学
背景情况:
- 电子技术的快速增长需要先进的电磁屏蔽材料进行保护.
- 使用吸收的泡屏蔽材料优先于反射型,以防止二次污染.
- 开发轻质,高效的电磁波吸收材料对于现代应用至关重要.
研究的目的:
- 开发一种具有增强电磁屏蔽效能的新型复合泡 (EMI SE).
- 为了研究屏蔽机制,专注于吸收,在新的复合泡.
- 评估复合泡在航空航天和便携式电子应用中的潜力.
主要方法:
- 将Fe3O4@聚乙醇 (Fe3O4@PVA) 和石墨烯氧化物@银 (GO@Ag) 纳入聚氨 (PU) 基质中.
- 使用泡过程制造复合泡.
- 电磁屏蔽有效性,机械性能和屏蔽机制的表征.
主要成果:
- Fe3O4@PVA和GO@Ag/PU复合泡表现出优异的网络结构,增强了EMI SE和机械性能.
- 使用7重%Fe3O4@PVA.获得30.9dB的屏蔽效率和274.9dB×cm3×g-1的特定EMI SE (SSE).
- 电磁波吸收占EMI SE总量的80%以上,证实吸收是主要的屏蔽机制.
- 铁3O4通过介电和铁磁歇斯底里损失促进了波浪吸收的增强.
结论:
- 开发的Fe3O4@PVA和GO@Ag/PU复合泡作为一种轻质,吸波电磁屏蔽材料,表现出高性能.
- 在PU矩阵内Fe3O4和GO@Ag的协同效应显著提高了屏蔽能力.
- 这项研究为为航空航天,便携式电子产品和可穿戴设备创造高效的电磁屏蔽解决方案提供了有希望的途径.
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