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Advanced Polymeric Materials for Electrical Insulation and High-Voltage Applications

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Smart and Functional Polymers".

Deadline for manuscript submissions: 20 September 2025 | Viewed by 1248

Special Issue Editor

Special Issue Information

Dear Colleagues,

This Special Issue focuses on advanced polymeric materials for electrical insulation and high-voltage applications. It aims to present the latest research and developments in polymeric materials that exhibit exceptional electrical insulation properties, thermal stability and mechanical strength, making them suitable for use in high-voltage equipment, insulators, power cables and other electrical insulation systems. This Special Issue covers various aspects of polymeric materials, including their synthesis, processing, characterization and application in electrical insulation. It explores the challenges and opportunities in developing new polymeric materials for high-voltage applications, with a focus on improving the performance, reliability and safety of electrical insulation systems. This Special Issue also highlights the potential of these advanced polymeric materials to revolutionize the electrical insulation industry by providing innovative solutions to existing problems and enabling the development of more efficient and sustainable high-voltage technologies.

Prof. Dr. Zhijin Zhang
Guest Editor

Manuscript Submission Information

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Keywords

  • polymeric materials
  • electrical insulation
  • high-voltage applications
  • insulators
  • insulation property
  • thermal stability
  • mechanical strength

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Published Papers (1 paper)

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Research

15 pages, 6869 KiB  
Article
Study on the Space Charge Characteristics of Polypropylene Insulation Material Under a Polarity Reversal Electric Field
by Xinhua Dong, Guodong Bao and Wei Wang
Polymers 2025, 17(3), 430; https://doi.org/10.3390/polym17030430 - 6 Feb 2025
Viewed by 589
Abstract
High-voltage (HV) cables may experience voltage polarity reversal during power adjustment, leading to the accumulation of space charges inside the insulation material and causing distortion of the internal electric field. To characterize the effect of grafting modification on the insulation properties of polypropylene [...] Read more.
High-voltage (HV) cables may experience voltage polarity reversal during power adjustment, leading to the accumulation of space charges inside the insulation material and causing distortion of the internal electric field. To characterize the effect of grafting modification on the insulation properties of polypropylene (PP), various electrical properties were characterized. The results show that grafting modification can significantly improve the electrical properties of PP, with PPG-2 exhibiting the best electrical properties. Compared with PP, the breakdown strength of PPG-2 is increased by 39.27%, and the critical electric field is increased by 36.52%. Meanwhile, the charge accumulation inside the PPG-2 is extremely small after voltage polarity reversal. The mechanism of grafting modification to enhance the electrical properties of PP was explained by analyzing the trap characteristics of the samples. This indicates that grafting modification introduces a large number of deep traps within PP, suppressing the injection and migration of charge carriers. The presence of deep traps weakens the charge accumulation and electric field distortion at the interface. In this paper, the optimal monomer and content of grafted PP were determined, and the insulation properties of the cable under operating conditions were analyzed. The research results offer practical guidance for the development of high-performance grafted PP cable insulation materials and the reliability of cable operation. Full article
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