| Properties Characterization of Ethyl Silicone Rubber with Low Temperature Resistantance |
| Received:November 16, 2017 Revised:November 16, 2017 |
| DOI： |
| Key Words: ethyl silicone rubber；compression coefficient of cold-resistance；low temperature property |
| Author Name | Affiliation | E-mail | | Huang Yanhua* | Beijing Institute of Aeronautical Materials | 824239418@qq.com | | Xue Lei | Beijing Institute of Aeronautical Materials | | | Su Zhengtao | Beijing Institute of Aeronautical Materials | |
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| Abstract: |
| The properties of ethyl silicone rubber（EVMQ）with low temperature resistance were investigated.The heat aging test showed that the heat resistance of EVMQ reduced with the increasing of ethyl unit.The compression coefficient in cold-resistance test showed that，the introduction of ethyl unit could increase the cold resistance of EVMQ，while the compression coefficient of cold-resistance of the EVMQ with 0.2 mole fraction of ethyl unit at －100 ℃ was 0.47.The DMTA results showed that，when the content of ethyl unit was increased to a certain value，the EVMQ formed non-crystalline rubber，and the glass-transition temperature decreased with the increase of ethyl unit.The low temperature tensile test showed that，the mechanical properties of the EVMQ with 0.2 mole fraction of ethyl unit at low temperature was only affected by volume contraction effect，which showed more excellent mechanical properties. |
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