The influence of organic additives phthalic anhydride and phthalic acid on the temperature–time dependencies of the electrical strength of HPPE films

IF 2.1 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Mechanics of Time-Dependent Materials Pub Date : 2025-04-16 DOI:10.1007/s11043-025-09780-1

Matanat Ahmed Mehrabova, Surayya Isa Mammadova, Sevinj Ittifag Safarova, Farhad Shamil Kerimov, Shafiqa Mohammad Mehdiyeva

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Abstract

In this paper, an investigation was conducted on the temperature–time dependence of the electrical durability of high-pressure polyethylene (HPPE) films. The role of organic additives, phthalic anhydride and phthalic acid, was identified. The additive content in HPPE compositions was adjusted with a range from 0.01 to 0.1 mass percent. Results show that incorporating appropriate amounts of these additives increases the electrical strength of HPPE films by approximately 50% compared to unmodified HPPE. Measurements were also conducted on the electrical strength of HPPE films and their modified compositions under varying mechanical stress levels. The activation energy of electrical breakdown (\(U\)) and its intrinsic value (\(U_{0}\)) remained consistent across both unmodified HPPE and its optimally modified forms. However, modifications with phthalic anhydride and phthalic acid altered the structure-sensitive coefficient (\(\beta \)), reflecting changes in HPPE properties. The value of \(U_{0}\) aligns with the activation energy of chemical bonds, indicating that electrical breakdown in these polymers primarily occurs through bond disruption.

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有机添加剂邻苯二酸酐和邻苯二酸对HPPE薄膜电强度温度-时间依赖性的影响

本文对高压聚乙烯（HPPE）薄膜电耐久性的温度-时间依赖性进行了研究。确定了有机添加剂邻苯二酸酐和邻苯二甲酸的作用。HPPE组合物中添加剂的含量在0.01 ～ 0.1质量％范围内调整。结果表明，加入适量的这些添加剂可使HPPE薄膜的电强度提高约50％% compared to unmodified HPPE. Measurements were also conducted on the electrical strength of HPPE films and their modified compositions under varying mechanical stress levels. The activation energy of electrical breakdown (\(U\)) and its intrinsic value (\(U_{0}\)) remained consistent across both unmodified HPPE and its optimally modified forms. However, modifications with phthalic anhydride and phthalic acid altered the structure-sensitive coefficient (\(\beta \)), reflecting changes in HPPE properties. The value of \(U_{0}\) aligns with the activation energy of chemical bonds, indicating that electrical breakdown in these polymers primarily occurs through bond disruption.

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来源期刊

Mechanics of Time-Dependent Materials 工程技术-材料科学：表征与测试

CiteScore

4.90

自引率

8.00%

发文量

审稿时长

>12 weeks

期刊介绍： Mechanics of Time-Dependent Materials accepts contributions dealing with the time-dependent mechanical properties of solid polymers, metals, ceramics, concrete, wood, or their composites. It is recognized that certain materials can be in the melt state as function of temperature and/or pressure. Contributions concerned with fundamental issues relating to processing and melt-to-solid transition behaviour are welcome, as are contributions addressing time-dependent failure and fracture phenomena. Manuscripts addressing environmental issues will be considered if they relate to time-dependent mechanical properties. The journal promotes the transfer of knowledge between various disciplines that deal with the properties of time-dependent solid materials but approach these from different angles. Among these disciplines are: Mechanical Engineering, Aerospace Engineering, Chemical Engineering, Rheology, Materials Science, Polymer Physics, Design, and others.