纳米复合材料在水吸附下的电学行为

Q3 Materials Science

Macromolecular Symposia Pub Date : 2025-06-18 DOI:10.1002/masy.70027

Luigi Vertuccio, Francesca Aliberti, Raffaele Longo, Liberata Guadagno

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引用次数: 0

摘要

本研究考察了纳米复合材料对水吸收的电响应。具体来说，电信号被用来检测碳纳米管基环氧复合材料的吸水量。研究的重点是填料含量（重量比0.1%）接近电渗透阈值时复合材料电阻的变化。由于复合材料的粘弹性和塑化作用，水渗透导致了“非菲克”扩散行为。电阻变化率随时间的变化，类似于吸水率的变化，允许使用灵敏度系数将电阻测量与吸水量联系起来。

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Electrical Behavior of Nanocomposites Exposed to Water Sorption

The present study examines the electrical response of nanocomposites to water uptake. Specifically, an electrical signal was employed to detect the amount of water absorbed in a carbon nanotube-based epoxy composite. The investigation focused on changes in the electrical resistance of the composite with a filler content (0.1% by weight) near the electrical percolation threshold. Water penetration results in “non-Fickian” diffusion behavior due to the composite's viscoelastic nature and plasticization effects. The variation in time of the resistance change ratio, similar to that of water absorption, allows associating the electrical resistance measurement for the amount of the absorbed water by the use of a sensitivity factor.

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来源期刊

Macromolecular Symposia Materials Science-Polymers and Plastics

CiteScore

1.50

自引率

0.00%

发文量

226

期刊介绍： Macromolecular Symposia presents state-of-the-art research articles in the field of macromolecular chemistry and physics. All submitted contributions are peer-reviewed to ensure a high quality of published manuscripts. Accepted articles will be typeset and published as a hardcover edition together with online publication at Wiley InterScience, thereby guaranteeing an immediate international dissemination.