| 硅氢化反式-1,4-聚异戊二烯的制备与结构研究 |
| Preparation and Structure of Hydrosilated Trans-1，4-polyisoprene |
| 投稿时间：2017-03-31 修订日期：2017-03-31 |
| DOI： |
| 中文关键词: 反式-1，4-聚异戊二烯 硅氢化 制备 结构 |
| 英文关键词: trans-1,4-polyisoprene hydrosilation preparation structure |
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| 中文摘要: |
| 研究硅氢化反式-1，4-聚异戊二烯（HsTPI）的制备与结构。TPI的最佳硅氢化反应工艺为：反应温度 105 ℃，反应时间 12 h，催化剂相对TPI质量分数 0.07，三乙基硅烷与TPI中乙烯基等摩尔浓度。采用核磁共振氢谱和核磁共振硅谱表证HsTPI的结构，确认三乙基硅烷接枝在反式-1，4-聚异戊二烯（TPI）的碳-碳主链上。热重分析表明，HsTPI的分解温度随着硅氢化度的增大而逐渐增大，热质量损失由TPI的一阶变为两阶。差示扫描量热分析表明，HsTPI的Tg随着硅氢化度的增大而提高。X射线衍射分析表明，随着硅氢化度的增大，HsTPI的晶型发生转变，随后结晶能力变小。HsTPI的力学性能随着氢化度的增大而变差。 |
| 英文摘要: |
| The preparation and structure of Hydrosilated trans-1，4-polyisoprene（HsTPI） were studied.The best hydrosilylation process of trans-1，4-polyisoprene（TPI） was obtained：the reaction temperature was 105 ℃，the reaction time was 12 h，catalyst relative TPI mass fraction was 0.07，the molar concentration of three ethyl silane and vinyl of TPI was equal.Confirmed triethyl silicane group was grafted into TPI C—C main molecular chain after characteristic analysis on hydrosilated TPI（HsTPI） by using 1H-NMR and Si-NMR.The thermogravimetric analysis showed that the decomposition temperature of HsTPI gradually increased along with degree of hydrosilation increasing.The thermal mass loss changed from one stage of TPI to two stage.Glass-transition temperature increased along with degree of hydrosilation increasing from the spectrogram of DSC.X-ray diffraction analysis showed that with the increase of the degree of hydrogenated silicon，the crystal form of HsTPI changed and the crystallization ability became smaller.The mechanical properties of HsTPI became worse with the increase of degree of hydrosilation. |
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