聚碳硅烷先驱体交联后热处理对陶瓷转化的影响  被引量:5

Effects of Heat-treatment Following Crosslinking of Polycarbosilane on Ceramic Conversation

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作  者:陈曼华[1] 陈朝辉[1] 

机构地区:[1]国防科技大学航天与材料工程学院,湖南长沙410073

出  处:《国防科技大学学报》2003年第2期38-40,共3页Journal of National University of Defense Technology

基  金:国家部委重点资助项目

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。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.

关 键 词:先驱体 聚碳硅烷 交联 陶瓷产率 热处理 

分 类 号:TB321[一般工业技术—材料科学与工程]

 

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