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首页> 外文期刊>IEEE Transactions on Dielectrics and Electrical Insulation >Influence of Temperature on Mechanical and Insulation Properties of Epoxy-Layered Silicate Nanocomposite
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Influence of Temperature on Mechanical and Insulation Properties of Epoxy-Layered Silicate Nanocomposite

机译：温度对环氧层状硅酸盐纳米复合材料力学和绝缘性能的影响

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摘要

The aim of this study is to investigate the influence of temperature on the mechanical and insulation properties of a newly developed epoxy-layered silicate nanocomposite. This nanocomposite has a higher thermal resistance with respect to mechanical properties than a base epoxy resin (epoxy resin without fillers). The volume resistivity of the nanocomposite gradually decreases with increasing temperature, and its relative permittivity gradually increases with increasing temperature. Its properties are more dependent on temperature than those of the base epoxy resin. Moreover, under a constant ac voltage, the insulation breakdown time of the nanocomposite was twice as long as that of the base epoxy resin at 20℃ and six times as long at 80℃. In particular, at 145℃, the nanocomposite had a breakdown time of more than 20,000 minutes while the base epoxy resin had breakdown time of 280 minutes. This improvement in breakdown time resulted from electrical treeing shapes with many branches and smaller internal stress of the nanocomposite in comparison with the base epoxy resin.
机译：这项研究的目的是研究温度对新开发的环氧层状硅酸盐纳米复合材料的机械和绝缘性能的影响。该纳米复合材料在机械性能方面具有比基础环氧树脂（不含填料的环氧树脂）更高的耐热性。纳米复合材料的体积电阻率随温度升高而逐渐降低，其相对介电常数随温度升高而逐渐升高。与基础环氧树脂相比，其性能对温度的依赖性更大。此外，在恒定交流电压下，纳米复合材料的绝缘击穿时间是20℃时基础环氧树脂的两倍，是80℃时的六倍。特别是在145℃时，纳米复合材料的分解时间超过20,000分钟，而基础环氧树脂的分解时间为280分钟。与基础环氧树脂相比，这种击穿时间的改善归因于具有许多分支的电树形状和纳米复合材料的较小内部应力。

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