| 引用本文: | 宋永才,冯春祥,陆逸,等.聚钛碳硅烷的新合成法及其研究.[J].国防科技大学学报,1991,13(1):31-37.[点击复制] |
| Song Yongcai,Feng Chunxiang,Lu Yi,et al.Study on a New Synthesis Method of Polytitanocarbosilanes[J].Journal of National University of Defense Technology,1991,13(1):31-37[点击复制] |
|
| |
|
|
| 本文已被：浏览 6364次 下载 6031次 |
| 聚钛碳硅烷的新合成法及其研究 |
| 宋永才, 冯春祥, 陆逸, 谭自烈 |
|
(材料科学与应用化学系)
|
| 摘要: |
| 从聚硅烷(PS)与钛酸丁酯(Ti(OBu)4)出发，不采用任何反应促进剂直接合成了含钛碳化硅纤维的先驱体聚钛碳硅烷(PTC)。在这一反应中，PS首先裂解成含Si-C 骨架与Si-H键的低分子聚硅烷(LPS)。然后，由LPS中的Si-H键与 Ti(OBu)4的反应以及LPS的Si-Si骨架裂解转化为 Si-C骨架的反应制得了 PTC。 本文对这种新合成法所涉及的反应过程进行了研究，并比较了新旧两法得到的PTC-Ⅰ与 PTC-Ⅱ的结构异同，报告了以新法制得的PTC-Ⅱ为先驱体得到的含钛碳化硅纤维的优良性能。 |
| 关键词: 复合材料，碳化硅纤维，先驱体/聚钛碳硅烷，聚硅烷 |
| DOI： |
| 投稿日期：1990-01-14 |
| 基金项目: |
|
| Study on a New Synthesis Method of Polytitanocarbosilanes |
| Song Yongcai, Feng Chunxiang, Lu Yi, Tan Zilie |
|
(Department of Materials Science and Applied Chemistry)
|
| Abstract: |
| Polytitanocarbosilanes (PTC)，the precursor of SiC fiber containing Ti，has been synthesized directly from polysilane (PS) and titanium tetrabutoxide (Ti(OBu)4) without using any reaction promoter. In this reaction，PS was decomposed into polysilane of low molecular weight (LPS) containing Si-C skeleton and Si-H bonds. Then PTC was obtained by the reaction of Si-H bonds in LPS with Ti(OBu)4 accompanied by the conversion of Si-Si skeleton in LPS into Si-C skeleton. In this paper，the synthesis process and structure of PTC-Ⅱ prepared by this new method，compared with PTC-Ⅰ obtained by old method，and the properties of SiC fiber containing Ti using PTC-Ⅱ as the precursor were examined and discussed. |
| Keywords: composite,SiC fiber,precursor/polytitanocarbosilanes Polysilane |
|
|
|
|
|
