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首页> 外文会议>International Conference on Electrical Materials and Power Equipment >A Comparative Study on Temperature Resistance of High Temperature Vulcanized Silicone Rubber and Liquid Silicone Rubber
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A Comparative Study on Temperature Resistance of High Temperature Vulcanized Silicone Rubber and Liquid Silicone Rubber

机译：高温硫化硅橡胶和液体硅橡胶耐温性比较研究

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摘要

High temperature vulcanized silicone rubber (HTVSR) insulators and Liquid silicone rubber (LSR) insulators have been widely used in transmission systems for more than 60 years. The temperature resistance is important for silicone rubber insulators. However, the comparative study of temperature resistance between HTVSR and LSR is rather lacking. Glass transition temperature (Tg), crystallization temperature (Tc), isothermal crystallization process, and thermal stability of HTVSR and LSR were compared by dynamic mechanical thermal analysis (DMA), differential scanning calorimeter (DSC), and thermogravimetric analysis (TGA). It was found that LSR is more suitable to use in low temperature regions due to its lower Tc compared with HTVSR. Besides, the isothermal crystallization kinetics of LSR has been described by the Avrami equation. LSR was found to be likely to produce truncated spherical crystals. For thermal stability, oxygen promotes the decomposition of LSR but influences the decomposition of HTV a little. However, the thermal stability of LSR is still more excellent than that of HTV. Finally, the conclusion can be drawn that LSR is more excellent than HTV in temperature resistance. LSR insulators can be applied in some cold regions and areas with large temperature changes.
机译：高温硫化的硅橡胶（HTVSR）绝缘体和液体硅橡胶（LSR）的绝缘体已被广泛地应用于传输系统，用于超过60年。耐温性为硅橡胶绝缘子重要。然而，HTVSR和LSR之间的温度电阻的比较研究是相当欠缺。玻璃过渡温度（T g ），结晶温度（T c ），等温结晶过程中，和HTVSR和LSR的热稳定性，通过动态力学热分析（DMA），差示扫描量热计（DSC），和热重分析（TGA）进行比较。据发现，LSR更适合在低温区域使用由于其较低的锝与HTVSR比较。此外，LSR的等温结晶动力学已经由Avrami方程描述。 LSR被认为是可能产生截断球状晶体。对于热稳定性，氧促进LSR的分解，但影响了一点的HTV分解。然而，LSR的热稳定性仍比HTV的更加出色。最后，可以得出结论该LSR比温度电阻HTV更优异。 LSR绝缘子可以在一些寒冷地区及温度变化大的地区应用。

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