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以硅溶胶和无机硅树脂为原料,通过液相渗积-原位固化成型技术和溶胶-凝胶法(So1-gel)制备了2.5D石英纤维增强石英陶瓷基复合材料。研究了无机硅树脂凝胶的差热分析,并对复合材料的致密化、机械强度及不同热处理温度对微州结构的影响做了分析,结果显示So1-gel法是制备SiO_(2f)/SiO_2复合材料的有效措施,浸渍无机硅树脂原料的复合材料密度由1.63 g/cm~3增加到1.72 g/cm~3,抗拉伸强度和压缩强度分别达到50和130 MPa,均有大幅度的提高,基体与纤维界面的脱黏和纤维的拔出说叫复合合材料为非脆性断裂。
Using silica sol and inorganic silicon as raw materials, 2.5D quartz fiber reinforced quartz ceramic matrix composites were prepared by liquid-infiltration-in-situ solidification molding and sol-gel method. The differential thermal analysis of inorganic silicone gel was studied. The effects of densification, mechanical strength and heat treatment temperature on the microstructure were analyzed. The results show that the So1-gel method is suitable for the preparation of SiO 2 (2f) / SiO 2 The effective measure of the composite material is that the density of composite material impregnated with inorganic silicon resin increases from 1.63 g / cm ~ 3 to 1.72 g / cm ~ 3, the tensile strength and compressive strength reach 50 and 130 MPa, respectively, Improve, the matrix and the fiber interface debonding and fiber pull out that composite materials are non-brittle fracture.