| 聚碳硅烷和二乙烯基苯的交联及纳米SiC陶瓷的制备 |
| |
| 引用本文： | 张磊,赵东林,沈曾民.聚碳硅烷和二乙烯基苯的交联及纳米SiC陶瓷的制备[J].材料科学与工程学报,2009(3). |
| |
| 作者姓名： | 张磊 赵东林 沈曾民 |
| |
| 作者单位： | 北京化工大学化工资源有效利用国家重点实验室; |
| |
| 基金项目： | 国家自然科学基金资助项目(50672004);;国家“863”计划资助项目(2008AA03Z513) |
| |
| 摘 要： | 碳化硅基复合材料是理想的高温结构材料,以聚碳硅烷(PCS)作为碳化硅陶瓷的先驱体,二乙烯基苯(DVB)为交联体,通过改变二者的配比研究了PCS与DVB的交联反应以及PCS/DVB交联体的热裂解过程。通过傅立叶红外光谱详细研究了PCS/DVB配比变化对PCS与DVB的交联反应和交联体微观结构的影响,PCS/DVB配比最终决定碳化硅陶瓷的产率,当PCS/DVB配比为1∶0.5时,经1500℃热裂解后碳化硅陶瓷产率最高,达到63.1%,热裂解产物为纳米碳化硅,粒径为10-40nm。用SEM和XRD研究了不同PCS/DVB配比交联体热裂解产物的微观结构和相组成,通过热重分析研究了PCS/DVB配比为1∶0.5时交联体的热裂解过程,在400-800℃,PCS/DVB交联体失重显著,在800℃热裂解过程基本完成,PCS/DVB配比为1∶0.5时能够制备出纳米碳化硅基复合材料。
|
| 关 键 词： | 先驱体 聚碳硅烷 二乙烯苯 交联 纳米SiC |
Cross-Linking of Polycarbosilane and Divinylbenzene and Fabrication of Nano SiC Ceramics |
| |
| ZHANG Lei,ZHAO Dong-lin,SHEN Zeng-min.Cross-Linking of Polycarbosilane and Divinylbenzene and Fabrication of Nano SiC Ceramics[J].Journal of Materials Science and Engineering,2009(3). |
| |
| Authors: | ZHANG Lei ZHAO Dong-lin SHEN Zeng-min |
| |
| Affiliation: | State Key Laboratory of Chemical Resource Engineering;Beijing University of Chemical Technology;Beijing 100029;China |
| |
| Abstract: | Silicon carbide matrix composites are the most promising candidates for high temperature structural materials, which exhibit an excellent oxidation resistance because of the formation of a protective layer of silica which limits further oxidation. Polycarbosilane (PCS) and divinylbenzene (DVB) were selected as a precursor to silicon carbide ceramics and a cross-linking reagent for PCS, respectively. The cross-linking properties and pyrolysis of PCS and DVB were investigated by changing the mass ratios of PC... |
| |
| Keywords: | precursor polycarbosilane divinylbenzene cross-linking nano silicon carbide |
| 本文献已被 CNKI 等数据库收录！ |
|
