紫外光引发聚乙烯交联技术研究进展

Research Progress in the UV-Initiated Polyethylene Cross-Linking Technology

交联聚乙烯绝缘电缆在高压及超高压领域中具有广泛的应用前景,生产交联聚乙烯绝缘电缆的紫外光引发交联技术因具有生产效率高、可连续生产时间长、辐照设备简单和基建费用低等优点,在高压电力电缆及海底电缆等领域将有望代替过氧化物交联技术而成为新一代超高压交联聚乙烯电缆的基本工艺。该文对交联聚乙烯绝缘电缆紫外光引发交联技术的核心机理和研究进展进行全面综述,探讨紫外光引发聚乙烯交联光化学反应的动力学特性及交联特性,重点分析紫外光交联聚乙烯绝缘介质的电学特性,并展望紫外光交联聚乙烯绝缘介质未来的研究方向,对于研制高电压绝缘材料和开发新聚合物合成技术具有重要意义。

Crosslinked polyethylene(XLPE) insulated cable prospects in a wide range of applications for high voltage and ultra-high voltage. The UV-initiated cross-linking technology is expected to substitute peroxide cross-linking technology and become the fundamental process of a new generation ultra-high voltage XLPE cable in the fields of high voltage power cable and submarine cable due to its simple irradiation equipment, low capital construction cost, high production efficiency and long continuous production time. In the present paper, the essential mechanism and the latest research progress of UV initiated cross-linking technology for XLPE insulating cable fabrication are systematically reviewed, investigating the kinetic and cross-linking processes in the UV-initiated photochemical reaction of polyethylene, and especially analyzing the electrical properties of UV-crosslinked polyethylene insulating materials. The analysis of UV-initiated cross-linking schemes and the prospective of UV XLPE insulation medium are also represented in high of interest, making it important significance for the development of high voltage insulation materials and new polymer synthesis technology.