| 金属氧化物对硅橡胶和氟硅橡胶耐热性的影响 |
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| 引用本文： | 苏正涛,刘君,彭亚岚,王洪锐,尹艳玲.金属氧化物对硅橡胶和氟硅橡胶耐热性的影响[J].有机硅材料,2000,14(5):4-7. |
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| 作者姓名： | 苏正涛 刘君 彭亚岚 王洪锐 尹艳玲 |
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| 作者单位： | 北京航空材料研究院,北京100095 |
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| 摘 要： | 着重研究了金属氧化物对甲基乙烯基硅橡胶、甲基苯基乙烯基硅橡胶、三氟丙基甲基乙烯基硅橡胶耐热性的影响。结果表明，Ｆｅ２Ｏ３、ＦｅＯ３／ＳｎＯ２、ＳｎＯ２、ＣｅＯ２等可以显著提高硅橡胶的耐热性；光电子能谱分析结果说明，ＳｎＯ２、ＣｅＯ２在热空气老化过程中从高价态被还原到低价态，发生了多个（或单个）电子转移的氧化还原反应，从而阻止了硅橡胶的热氧化自由基链增长，提高了硅橡胶的耐热空气老化性能。
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| 关 键 词： | 乙烯基 苯基 硅橡胶 氟硅橡胶 金属氧化物 |
| 修稿时间： | 2000年7月24日 |
Effects of Metal Oxides on Thermal Stability of Silicone Rubber |
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| Su Zhengtao,Liu Jun,Peng Yalan,Wang Hongrui,Yin Yanling.Effects of Metal Oxides on Thermal Stability of Silicone Rubber[J].Silicone Material,2000,14(5):4-7. |
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| Authors: | Su Zhengtao Liu Jun Peng Yalan Wang Hongrui Yin Yanling |
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| Abstract: | s:The effects of metal oxides Fe 2O 3,Fe 2O 3SnO 2,SnO 2,and CeO 2 on the thermal stability of methyl vinyl silicone rubber,methyl phenyl vinyl silicone rubber,and trifluoropropyl methyl vinyl silicone rubber were studied.The analysis of XPS showed that Sn 4 or Ce 4 were reduced to Sn 0 or Ce 3 in silicone rubber during thermal air aging. The reaction of SnO 2,CeO 2 of multi or single electron transfer protected the silicone rubber from thermal oxidation,and the thermal stability of silicone rubbers could be improved by adding SnO 2,CeO 2. |
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| Keywords: | metal oxide methyl-vinyl silicone rubber phenyl silicone rubber fluorosilicone rubber thermal stability |
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