当前位置: X-MOL 学术Radiat. Phys. Chem. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Tailoring electrical properties of PVC/PEC/Co3O4 nanocomposites by electron beam irradiation for advanced medium voltage cable applications
Radiation Physics and Chemistry ( IF 2.9 ) Pub Date : 2024-04-16 , DOI: 10.1016/j.radphyschem.2024.111761
A.M. Elbasiony , A.I. Sharshir

This study aimed to investigate the effects of electron beam irradiation on the structural, optical, and electrical properties of polyvinyl chloride/pectin (PVC/PEC) nanocomposites incorporating hexagonal nanoplate CoO. Hexagonal nanoplate CoO was synthesized and incorporated into PVC/PEC blends at 5 wt%. The nanocomposites were subjected to electron beam irradiation at varying doses (0, 10, 20, and 30 kGy). Various characterization techniques, including XRD, UV–Vis spectroscopy, AC conductivity, and dielectric measurements, were employed to analyze the irradiated samples. Additionally, electric field distribution simulations were performed for a 33 kV cable model. XRD analysis revealed the retention of CoO crystallinity up to 30 kGy, while the polymer matrix showed degradation above 10 kGy. The optical bandgap decreased from 2.25 eV to 1.90 eV with increasing irradiation dose, indicating changes in the electronic structure. The optimized AC conductivity (37.17 × 10 S m) and minimum relative permittivity (2.28) were achieved for the 30 kGy irradiated sample with 5 wt% CoO. The electric potential distribution gradually decreased from 33,000 V to zero V. The systematic variations in structural, optical, and electrical properties demonstrated controlled tuning of charge transport mechanisms, making these nanocomposites potentially suitable for advanced cable systems. The simulation results showed that the inclusion of CoO at 30 kGy helped maintain a uniform electric field distribution in the 33 kV cable model compared to an unfilled cable.

中文翻译:

通过电子束辐照调整 PVC/PEC/Co3O4 纳米复合材料的电性能,用于先进的中压电缆应用

本研究旨在研究电子束辐照对含有六方纳米板 CoO 的聚氯乙烯/果胶 (PVC/PEC) 纳米复合材料的结构、光学和电学性能的影响。合成了六方纳米片 CoO 并以 5 wt% 的量掺入 PVC/PEC 共混物中。纳米复合材料受到不同剂量(0、10、20 和 30 kGy)的电子束照射。采用各种表征技术,包括 XRD、紫外-可见光谱、交流电导率和介电测量,来分析辐照样品。此外,还对 33 kV 电缆模型进行了电场分布模拟。 XRD 分析显示,CoO 结晶度保留高达 30 kGy,而聚合物基质在超过 10 kGy 时出现降解。随着辐照剂量的增加,光学带隙从 2.25 eV 减小到 1.90 eV,表明电子结构发生了变化。对于含有 5 wt% CoO 的 30 kGy 辐照样品,获得了优化的交流电导率 (37.17 × 10 S m) 和最小相对介电常数 (2.28)。电势分布从 33,000 V 逐渐降低到 0 V。结构、光学和电学特性的系统变化证明了电荷传输机制的受控调节,使这些纳米复合材料有可能适用于先进的电缆系统。模拟结果表明,与未填充的电缆相比,在 30 kGy 下添加 CoO 有助于在 33 kV 电缆模型中保持均匀的电场分布。
更新日期:2024-04-16
down
wechat
bug