Liquid polycarbosilanes: synthesis and evaluation as precursors for SiC ceramic
文献类型：期刊论文
| 作者 | He, Lijuan1,2; Zhang, Zongbo1; Yang, Xiaogan1,2; Jiao, Lingling1; Li, Yongming1; Xu, Caihong1 |
| 刊名 | POLYMER INTERNATIONAL
 |
| 出版日期 | 2015-08-01 |
| 卷号 | 64期号:8页码:979-985 |
| 关键词 | polycarbosilane SiC ceramic precursor C:Si ratio pyrolysis |
| 英文摘要 | A series of liquid polycarbosilanes were successfully synthesized by a sequential Grignard coupling reaction of (chloromethyl)triethoxysilane and vinylmagnesium bromide, followed by reduction with lithium aluminium hydride. The use of non-corrosive, easily handleable and storage stable (chloromethyl)triethoxysilane as starting material is an attractive advantage for this route. The as-synthesized polymers containing Si-CH=CH2 and Si - H groups are storage stable and can be easily cured in an inert atmosphere. The ceramic yield of the cured polycarbosilane and the C:Si ratio of the derived ceramic were varied by adjusting the mole ratio of starting materials in the feed. Among them, the polymer with a mole ratio of Si-CH=CH2 to Si - H of 1:10 has the highest ceramic yield at 89.6% after curing at 220 degrees C and the C:Si ratio of the derived ceramic is 1.48. This kind of polycarbosilane shows high potential as an SiC ceramic precursor in the fabrication of an SiC matrix by the precursor infiltration pyrolysis process. (c) 2015 Society of Chemical Industry |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2015-11-02 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/27911]  |
| 专题 | 化学研究所_高技术材料实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Lab Adv Polymer Mat, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Lijuan,Zhang, Zongbo,Yang, Xiaogan,et al. Liquid polycarbosilanes: synthesis and evaluation as precursors for SiC ceramic[J]. POLYMER INTERNATIONAL,2015,64(8):979-985. |
| APA | He, Lijuan,Zhang, Zongbo,Yang, Xiaogan,Jiao, Lingling,Li, Yongming,&Xu, Caihong.(2015).Liquid polycarbosilanes: synthesis and evaluation as precursors for SiC ceramic.POLYMER INTERNATIONAL,64(8),979-985. |
| MLA | He, Lijuan,et al."Liquid polycarbosilanes: synthesis and evaluation as precursors for SiC ceramic".POLYMER INTERNATIONAL 64.8(2015):979-985. |
入库方式： OAI收割
来源：化学研究所
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