3 kHz 至 1 MHz 频率范围内 PANI/环氧树脂复合材料的通信可调洛伦兹型负脆性

IF 1.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

ECS Journal of Solid State Science and Technology Pub Date : 2024-09-04 DOI:10.1149/2162-8777/ad7402

Min Chen, Shuxin Chen, Yaxuan Ji, Kai Zhang

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引用次数: 0

摘要

渗流复合材料中的负介电常数因其在实际应用中的广阔前景而备受关注。本研究表明，聚苯胺（PANI）/环氧树脂复合材料的渗流阈值在 40 wt% 到 50 wt% 之间。超过这个渗滤阈值，复合材料就会表现出相应的负介电行为。值得注意的是，在 PANI 含量高达 90 wt% 时，介电率表现出类似洛伦兹共振的特性。这项研究提出了一种通过洛伦兹共振表现出可调低频负介电常数的有效方法。

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Communication—Tunable Lorentz-Type Negative Permittivity of PANI/Epoxy Resin Composites in the Frequency Range from 3 kHz to 1 MHz

Negative permittivity in percolation composites garnered significant interest due to its promising implications for practical applications. This study demonstrates that the percolation threshold of the polyaniline(PANI)/epoxy resin composite falls within the range of 40 wt% to 50 wt%. Beyond this percolation threshold, the composites exhibit a corresponding negative dielectric behavior. Notably, at a high PANI content level of 90 wt%, the permittivity exhibits characteristics akin to Lorentz resonance type behavior. This research presents an effective approach to exhibit tunable low-frequency negative permittivity through Lorentz resonance.

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来源期刊

ECS Journal of Solid State Science and Technology MATERIALS SCIENCE, MULTIDISCIPLINARY-PHYSICS, APPLIED

CiteScore

4.50

自引率

13.60%

发文量

455

期刊介绍： The ECS Journal of Solid State Science and Technology (JSS) was launched in 2012, and publishes outstanding research covering fundamental and applied areas of solid state science and technology, including experimental and theoretical aspects of the chemistry and physics of materials and devices. JSS has five topical interest areas: carbon nanostructures and devices dielectric science and materials electronic materials and processing electronic and photonic devices and systems luminescence and display materials, devices and processing.