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Method for preparing ceramic fiber reinforced quartz ceramic-based composite material through low-temperature sintering and application of ceramic fiber reinforced quartz ceramic-based composite material
The invention relates to a method for preparing a ceramic fiber reinforced quartz ceramic-based composite material through low-temperature sintering and application of the ceramic fiber reinforced quartz ceramic-based composite material. The method comprises the following steps: uniformly mixing silica sol, boric acid and polyethylene glycol to obtain ceramic slurry; placing a fiber fabric in a vacuum impregnation device, vacuumizing, injecting the ceramic slurry into the vacuum impregnation device, and enabling the ceramic slurry to submerge the fiber fabric; the whole vacuum impregnation device containing the fiber fabric and the ceramic slurry is placed in a drying oven to be subjected to a gel reaction, and a composite wet fabric is obtained; performing constant-temperature and constant-humidity drying on the composite wet fabric, and then performing high-temperature drying to obtain a composite material; carrying out low-temperature sintering on the composite material; and repeating the dipping-drying-sintering cycle for multiple times to prepare the ceramic fiber reinforced quartz ceramic-based composite material. According to the method, the cyclic densification heat treatment temperature of the composite material can be effectively reduced, so that the damage to fibers is effectively reduced, and the mechanical reliability and stability of the composite material are improved.
本发明涉及一种低温烧结制备陶瓷纤维增强石英陶瓷基复合材料的方法和应用。所述方法：将硅溶胶、硼酸和聚乙二醇混合均匀，得到陶瓷浆料；将纤维织物放置于真空浸渍装置中，抽真空后，将所述陶瓷浆料注入所述真空浸渍装置中并使所述陶瓷浆料没过所述纤维织物；将包含有纤维织物和陶瓷浆料的真空浸渍装置整体放置于烘箱中进行凝胶反应，得到复合湿织物；将复合湿织物先进行恒温恒湿干燥，然后进行高温干燥，得到复合材料；将所述复合材料进行低温烧结；重复多次浸渍‑干燥‑烧结循环，制得陶瓷纤维增强石英陶瓷基复合材料。本发明能够有效降低复合材料的循环增密热处理温度，从而有效降低了对纤维的损伤，提高了复合材料的力学可靠性和稳定性。
Method for preparing ceramic fiber reinforced quartz ceramic-based composite material through low-temperature sintering and application of ceramic fiber reinforced quartz ceramic-based composite material
The invention relates to a method for preparing a ceramic fiber reinforced quartz ceramic-based composite material through low-temperature sintering and application of the ceramic fiber reinforced quartz ceramic-based composite material. The method comprises the following steps: uniformly mixing silica sol, boric acid and polyethylene glycol to obtain ceramic slurry; placing a fiber fabric in a vacuum impregnation device, vacuumizing, injecting the ceramic slurry into the vacuum impregnation device, and enabling the ceramic slurry to submerge the fiber fabric; the whole vacuum impregnation device containing the fiber fabric and the ceramic slurry is placed in a drying oven to be subjected to a gel reaction, and a composite wet fabric is obtained; performing constant-temperature and constant-humidity drying on the composite wet fabric, and then performing high-temperature drying to obtain a composite material; carrying out low-temperature sintering on the composite material; and repeating the dipping-drying-sintering cycle for multiple times to prepare the ceramic fiber reinforced quartz ceramic-based composite material. According to the method, the cyclic densification heat treatment temperature of the composite material can be effectively reduced, so that the damage to fibers is effectively reduced, and the mechanical reliability and stability of the composite material are improved.
本发明涉及一种低温烧结制备陶瓷纤维增强石英陶瓷基复合材料的方法和应用。所述方法：将硅溶胶、硼酸和聚乙二醇混合均匀，得到陶瓷浆料；将纤维织物放置于真空浸渍装置中，抽真空后，将所述陶瓷浆料注入所述真空浸渍装置中并使所述陶瓷浆料没过所述纤维织物；将包含有纤维织物和陶瓷浆料的真空浸渍装置整体放置于烘箱中进行凝胶反应，得到复合湿织物；将复合湿织物先进行恒温恒湿干燥，然后进行高温干燥，得到复合材料；将所述复合材料进行低温烧结；重复多次浸渍‑干燥‑烧结循环，制得陶瓷纤维增强石英陶瓷基复合材料。本发明能够有效降低复合材料的循环增密热处理温度，从而有效降低了对纤维的损伤，提高了复合材料的力学可靠性和稳定性。
Method for preparing ceramic fiber reinforced quartz ceramic-based composite material through low-temperature sintering and application of ceramic fiber reinforced quartz ceramic-based composite material
一种低温烧结制备陶瓷纤维增强石英陶瓷基复合材料的方法和应用
SUN ZHIQIANG (author) / CI JILIANG (author) / LIU YICHANG (author) / GU YAQI (author) / ZHANG JIAN (author) / LYU YI (author) / ZHAO YINGMIN (author) / ZHANG HAO (author)
2022-03-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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