Exploring thermal dynamics of polyaniline-modified paraffin wax phase change material with varied PANI loadings (1–4% wt.)

IF 1.7 4区工程技术 Q3 MECHANICS

Heat and Mass Transfer Pub Date : 2024-03-11 DOI:10.1007/s00231-024-03454-3

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引用次数: 0

Abstract

In this experimental study, we explore the potential enhancements in thermal conductivity while investigating alterations in latent heat and phase change temperature within Composite Phase Change Materials (PCMs). These composites consist of Paraffin Wax (PW) as the base material, incorporating dispersed conducting Polyaniline (PANI) powder in varying concentrations ranging from 1% wt. to 4% wt. The mass fractions of PANI added to PW include 1%, 2%, 3%, and 4%, and the composite PCMs are meticulously prepared through ultrasonication. Examining the surface morphology of Composite Phase Change Materials (PCMs) involved utilizing a Scanning Electron Microscope (SEM), while the determination of thermal conductivity employed a Heat Flow Meter. Additionally, latent heat and phase change temperatures were assessed through Differential Scanning Calorimetry (DSC). The obtained results indicate an augmentation in the thermal conductivity of the composites when compared to Paraffin Wax (PW). Specifically, thermal conductivity exhibited a 40% increase for 1% wt. of PANI, yet experienced a subsequent decline for the remaining weight percentages. Furthermore, the latent heat and phase change temperatures of the composites were observed to decrease in comparison to PW. These composite PCMs with enhanced thermal conductivity, achieved through the incorporation of Polyaniline in Paraffin Wax, are highly potential for several applications in energy storage systems, thermal regulation devices, and heat management technologies.

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探索不同 PANI 含量（1-4% wt.）

摘要在本实验研究中，我们在研究复合相变材料 (PCM) 的潜热和相变温度变化的同时，探讨了增强导热性的潜力。这些复合材料以石蜡（PW）为基材，并加入了分散的导电聚苯胺（PANI）粉末，浓度从 1%（重量比）到 4%（重量比）不等。添加到 PW 中的 PANI 的质量分数包括 1%、2%、3% 和 4%，复合 PCM 是通过超声波精心制备的。利用扫描电子显微镜 (SEM) 检查复合相变材料 (PCM) 的表面形态，而热导率的测定则采用热流计。此外，还通过差示扫描量热仪（DSC）评估了潜热和相变温度。结果表明，与石蜡（PW）相比，复合材料的热导率有所提高。具体来说，当 PANI 的重量百分比为 1%时，热传导率增加了 40%，但其余重量百分比的热传导率随之下降。此外，与 PW 相比，复合材料的潜热和相变温度也有所降低。通过在石蜡中加入聚苯胺，这些复合 PCM 的导热性能得到了增强，在储能系统、热调节装置和热管理技术等领域具有很大的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Heat and Mass Transfer 工程技术-力学

CiteScore

4.80

自引率

4.50%

发文量

148

审稿时长

8.0 months

期刊介绍： This journal serves the circulation of new developments in the field of basic research of heat and mass transfer phenomena, as well as related material properties and their measurements. Thereby applications to engineering problems are promoted. The journal is the traditional "Wärme- und Stoffübertragung" which was changed to "Heat and Mass Transfer" back in 1995.