| 三甲基硅基取代聚硅烷的合成与性能研究 |
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| 引用本文： | 邢欣,李效东,刘琳,方庆玲,王军.三甲基硅基取代聚硅烷的合成与性能研究[J].高分子学报,2007(5):428-433. |
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| 作者姓名： | 邢欣 李效东 刘琳 方庆玲 王军 |
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| 作者单位： | 国防科技大学航天与材料工程学院,长沙,410073 |
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| 摘 要： | 利用聚甲基硅烷(PMS)的高分子反应合成三甲基硅基取代聚硅烷(SPS),研究其分子组成与结构,热分解性能和导电性能等.FT-IR、1H-NMR、29Si-NMR、UV和GPC分析表明,SPS具有Si—Si相连的主链结构,侧链的部分取代基中含有三甲基硅侧基.SPS可溶于一般常见的有机溶剂,其热分解特性表明,陶瓷产率为44%,可用作SiC陶瓷先驱体.通过热交联反应可以有效提高其分子量,将其与碘掺杂,电导率为10-6S/cm量级,在半导体范围.
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| 关 键 词： | 三甲基硅基取代聚硅烷 聚甲基硅烷 高分子反应 半导体性能 |
| 收稿时间： | 2006-04-03 |
| 修稿时间： | 2006-05-18 |
SYNTHESIS AND CHARACTERIZATION OF TRIMETHYLSILYL-SUBSTITUTED POLYSILANE |
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| XING Xin,LI Xiaodong,LIU Lin,FANG Qingling,WANG Jun.SYNTHESIS AND CHARACTERIZATION OF TRIMETHYLSILYL-SUBSTITUTED POLYSILANE[J].Acta Polymerica Sinica,2007(5):428-433. |
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| Authors: | XING Xin LI Xiaodong LIU Lin FANG Qingling WANG Jun |
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| Institution: | College of Aerospace and Material Engineering, National University of Defense Technology, Changsha 410073 |
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| Abstract: | A new class of polysilane polymers containing pendant silyl substituents,named trimethylsilyl-substituted polysilane(SPS),was prepared by polymer reaction of polymethylsilane and characterized by means of FT-IR,1H-NMR,29Si CP MAS-NMR,UV and GPC,respectively.This polymer is soluble in common organic solvents,and its molecular weight can be increased by crosslinking reaction.The property of pyrolysis shows that its ceramic yield is 44%,and it is a potential preceramic polymer.The conductivity of SPS can be as high as 10-6 S/cm in the range of semi-conductor after being doped with iodine due to the possibly wider σ-delocalized system caused by the silicon substituents. |
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| Keywords: | Trimethylsilyl-substituted polysilane Polymethylsilane Polymer reaction Semiconductive properties |
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