Tuning electrical properties of EVA polymer film by dual-doping CNT and SnO2 for cable applications

IF 3.3 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2026-05-01 Epub Date: 2026-02-10 DOI:10.1016/j.solidstatesciences.2026.108255

Foziah F. Al-Fawzan , Amal F. Abd El-Gawad , S.A. Fayek , Mahmoud G.A. Saleh , Abdulaal Zuhayr Al-Khazaal , Nadiyah Alahmadi , A.I. Sharshir

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Abstract

This work examines the feasibility of integrating carbon nanotube (CNT) and tin oxide (SnO₂) nanoparticles into a poly(ethylene-co-vinyl acetate) (EVA) matrix to improve the durability of medium voltage cables. The integration of nanoparticles into the EVA insulation material aims to improve the electrical and dielectric properties of the cable. The nanocomposite films were made by dissolving EVA in tetrahydrofuran (THF) and incorporating a combination of 2 wt% SnO₂ nanoparticles and CNT at varying ratios (0.5%, 1%, and 1.5%). Fourier-transform infrared spectroscopy (FTIR) analysis validated the effective integration of the nanoparticles into the EVA matrix. The DC electrical conductivity has a value of (47∗10⁻¹⁰ S/m) for EVA/SnO₂@0.15 CNT. The dielectric characteristics of SnO₂ nanocomposites were examined, revealing that the sample with 1.5% CNT exhibited the highest AC conductivity (3.9 × 10⁻⁶ S/m), dielectric constant, and dielectric loss over the frequency spectrum. The Structural and morphological properties of the prepared flexible films were studied using XRD and SEM. The prepared SnO₂ by the sol-gel method has P4₂/mnm (136) space group, with a = 4.80500 Å and c = 3.20500 Å, and has the Tetragonal phase crystal planes PDF 01-080-6729. Also, it has a volume of 74.00A^o3 and a density of 6.764 g/cm³. Also, the thermal stability was investigated by TGA for the prepared flexible polymer films, and it increases with increasing CNT concentration.

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用CNT和SnO2双掺杂调整电缆用EVA聚合物薄膜的电学性能

本研究探讨了将碳纳米管（CNT）和氧化锡（SnO2）纳米颗粒整合到聚乙烯-醋酸乙烯酯（EVA）基体中以提高中压电缆耐久性的可行性。将纳米颗粒整合到EVA绝缘材料中，旨在改善电缆的电气和介电性能。通过将EVA溶解在四氢呋喃（THF）中，并以不同的比例（0.5%，1%和1.5%）加入2wt % SnO2纳米颗粒和碳纳米管的组合来制备纳米复合膜。傅里叶变换红外光谱（FTIR）分析验证了纳米颗粒与EVA矩阵的有效集成。EVA/SnO2@0.15碳纳米管的直流电导率值为（47 * 10−10 S/m）。研究了SnO2纳米复合材料的介电特性，结果表明，添加1.5%碳纳米管的样品在频谱上具有最高的交流电导率（3.9 × 10−6 S/m）、介电常数和介电损耗。利用XRD和SEM对制备的柔性薄膜的结构和形貌进行了研究。溶胶-凝胶法制备的SnO2具有P42/mnm（136）的空间基团，a = 4.80500 Å， c = 3.20500 Å，具有四方相晶体平面PDF 01-080-6729。此外，它的体积为74.00Ao3，密度为6.764 g/cm3。通过热重分析仪对制备的柔性聚合物薄膜的热稳定性进行了研究，发现薄膜的热稳定性随碳纳米管浓度的增加而增加。

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.