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本文研究了制备增强复合材料(纤维增强陶瓷)的可行性,采用聚苯酚——甲醛或聚乙烯醇作为增塑剂,以碳纤维和莫来石纤维为增强材料,利用不同种类的氧化铝陶瓷作为基体材料。检测数据表明,增强复合材料能获得许多优良的性能,如:热震性能好、耐化学腐蚀性能好和机械强度大等。同时,以工业氧化铝粉末作为基体材料的增强复合材料(纤维增强陶瓷)的密度比以纯氧化铝粉末作为基体材料的增强复合材料(纤维增强陶瓷)的密度略低一些。事实上,增强复合材料(纤维增强陶瓷)的密度主要是由所采用的增塑剂的数量和种类决定的,增加纤维材料的添加量,反而会减小增强复合材料(纤维增强陶瓷)的密度,同时纤维的种类及其添加量又严重地影响增强复合材料(纤维增强陶瓷)的收缩率。
In this paper, the feasibility of preparing reinforced composite materials (fiber-reinforced ceramics) was studied. Polyphenol-formaldehyde or polyvinyl alcohol as plasticizer, carbon fiber and mullite fiber as reinforcing materials, different types of alumina ceramics were used as Matrix material. Test data show that reinforced composite materials can get many excellent properties, such as: thermal shock resistance, good chemical resistance and mechanical strength and so on. At the same time, the density of the reinforced composite material (fiber-reinforced ceramic) using the industrial alumina powder as the base material is slightly lower than the density of the reinforced composite material (the fiber-reinforced ceramic) using pure alumina powder as the base material. In fact, the density of the reinforced composite material (fiber reinforced ceramic) is mainly determined by the amount and type of plasticizer used. Increasing the amount of fiber material, on the contrary, will reduce the density of the reinforced composite material (fiber reinforced ceramic) , While the type of fiber and its amount of addition seriously affect the shrinkage of the reinforced composite material (fiber-reinforced ceramic).