| 侧基对硅橡胶低温性能的影响 |
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| 引用本文： | 黄艳华,孙全吉,米志安,苏正涛,刘嘉,王景鹤.侧基对硅橡胶低温性能的影响[J].特种橡胶制品,2010,31(4):17-19,23. |
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| 作者姓名： | 黄艳华 孙全吉 米志安 苏正涛 刘嘉 王景鹤 |
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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： | 研究了有机侧基对硅橡胶低温性能的影响。压缩耐寒系数实验表明,大体积有机侧基基团的引入可破坏硅橡胶的低温结晶;DMTA分析表明,当大体积基团数目达到一定数量时,可破坏低温结晶,甚至使低温结晶完全消失,成为非结晶橡胶;在有机侧基中,选择合适的改性链节并调节其含量,可提高硅橡胶的玻璃化转变温度,如随苯基和三氟丙基取代基的增加玻璃化转变温度升高。
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| 关 键 词： | 硅橡胶 低温性能 苯基硅橡胶 氟硅橡胶 |
Effect of Organic Side Group on Low Temperature-resistance of Silicon Rubber |
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| HUANG Yan-hua,SUN Quan-ji,MI Zhi-an,SU Zheng-tao,LIU Jia,WANG Jing-he.Effect of Organic Side Group on Low Temperature-resistance of Silicon Rubber[J].Special Purpose Rubber Products,2010,31(4):17-19,23. |
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| Authors: | HUANG Yan-hua SUN Quan-ji MI Zhi-an SU Zheng-tao LIU Jia WANG Jing-he |
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| Affiliation: | HUANG Yan-hua , SUN Quan-ji , MI Zhi-an ,SU Zheng-tao , LIU J ia , WANG J ing-he (Beijing Research Institute of Aeronautical Materials,Beijing 100095,China) |
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| Abstract: | The effect of organic side-group on the low temperature-resistance of silicone rubber was investigated. The cold-resistance results showed that the bulky side-group could destroy the crystal of silicone rubber at low-temperature. The DMTA tests showed that when the number of bulky sidegroup was increased to a certain value, the low-temperature crystal properties of silicone rubber was destroyed completely, and non-crystal rubber was formed. For different organic side-groups, the selection of appropriate modified-chains and the adjustment of their content could increase the glass transition temperature （Tg）. For example, with the increasing of phenyl and trifluoropropyl substitute, the Tg was risen. |
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| Keywords: | silicone rubber low temperature property phenyl-silieone rubber fluorinatedsiliconerubber |
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