Room temperature vulcanized silicone rubber (RTVSR) nanocomposites were prepared by mixing of surface‐modified montmorillonite nanoclay or nano fumed silica, or both of them with RTVSR to improve thermal stability, electrical insulation, and flame retardant. Their tensile strength, elongation, swelling, and solubility properties at different doses of gamma radiation were investigated to study the effect of gamma radiation on the properties of the nanocomposites. The thermal stability, flammability properties, and volume resistivity of the nanocomposites were also investigated. The nanocomposite which containing fumed silica has the best thermal, mechanical properties, electrical insulation and fire retardancy. The thermal characteristics, namely, T_onset, T_10%, T_comp, and T_max, of the nanocomposite sample containing fumed silica were 22, 23, 13, and 11 °C higher than those of the blank, respectively. The tensile strength (TS) increased when the radiation dose was increased up to 100 kGy, but elongation, swelling, and solubility decreased when the radiation dose was increased up to 150 kGy. It can be generally concluded that the nanocomposites containing fumed silica and irradiated to 100 kGy are characterized by having outstanding mechanical, thermal, fire retardant, and electrical insulation properties and hence, they may have wide industrial applications as good thermal and electrical insulating materials. J. VINYL ADDIT. TECHNOL., 26:354–361, 2020. © 2019 Society of Plastics Engineers

中文翻译：

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改善γ辐照的硅橡胶纳米复合材料的热稳定性和电绝缘性

室温硫化硅橡胶（RTVSR）纳米复合材料是通过将表面改性的蒙脱土纳米粘土或纳米气相二氧化硅或两者与RTVSR混合来制备的，以提高热稳定性，电绝缘性和阻燃性。研究了它们在不同剂量的伽玛射线下的拉伸强度，伸长率，溶胀和溶解性，以研究伽玛射线对纳米复合材料性能的影响。还研究了纳米复合材料的热稳定性，可燃性和体积电阻率。包含气相法二氧化硅的纳米复合材料具有最佳的热，机械性能，电绝缘性和阻燃性。热特性，即T_起始，T _10％包含气相二氧化硅的纳米复合材料样品的，T _comp和T _max分别比空白样品高22、23、13和11°C。当辐射剂量增加到100 kGy时，抗张强度（TS）会增加，但是当辐射剂量增加到150 kGy时，伸长率，溶胀和溶解度会降低。通常可以得出结论，含有气相法二氧化硅并辐照到100 kGy的纳米复合材料的特点是具有出色的机械，热，阻燃和电绝缘性能，因此，作为良好的热和电绝缘材料，它们可能具有广泛的工业应用。J.乙烯基添加物。TECHNOL。，26：354–361，2020.©2019塑料工程师协会