| 引用本文: | 陈曼华,陈朝辉.聚碳硅烷先驱体交联后热处理对陶瓷转化的影响.[J].国防科技大学学报,2003,25(2):38-40.[点击复制] |
| CHEN Manhua,CHEN Zhaohui.Effects of Heat-treatment Following Crosslinking of Polycarbosilane on Ceramic Conversation[J].Journal of National University of Defense Technology,2003,25(2):38-40[点击复制] |
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| 聚碳硅烷先驱体交联后热处理对陶瓷转化的影响 |
| 陈曼华, 陈朝辉 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 将聚碳硅烷交联产物在裂解前，先在200～400℃进行不同温度下的热处理，研究其对陶瓷转化过程的影响。结果表明,经400℃/2h热处理后，其裂解产物的陶瓷产率达到73.9%；裂解产物结构的主要缺陷为气孔，而未经热处理样品裂解产物结构的主要缺陷为裂纹。如果用该结构的陶瓷为基体，可以减少纤维损伤。 |
| 关键词: 先驱体 聚碳硅烷 交联 陶瓷产率 热处理 |
| DOI： |
| 投稿日期：2002-10-21 |
| 基金项目:国家部委重点资助项目 |
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| Effects of Heat-treatment Following Crosslinking of Polycarbosilane on Ceramic Conversation |
| CHEN Manhua, CHEN Zhaohui |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| The crosslinked products of polycarbosilane were heated between 200-400℃ before pyrolysis in order to investigate their effects on conversation of ceramic. It was shown that 73.9% ceramic yield was raised when heated two hours at 400℃.The dominating defects in structure of its product pyrolysed were pores,not cracks in structure of that without heat-treatment.The damage of fiber could be decreased significantly if such ceramic were used as base. |
| Keywords: precursor polycarbosilane cross-linking ceramic yield heat-treatment |
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