Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cf-SiBCN ceramic-based composite material and preparation method thereof
The invention relates to the technical field of ceramic materials, in particular to a Cf-SiBCN ceramic-based composite material and a preparation method thereof.The preparation method comprises the following steps that S1, a solid-phase polyborosilazane precursor is dissolved in a liquid-phase polyborosilazane precursor, the mixed precursor is introduced into a carbon fiber woven body, then the impregnation process is completed in a high-pressure environment, and a carbon fiber woven body is obtained; heating, cross-linking and curing in a vacuum environment or under the protection of inert gas, and then cracking at high temperature to obtain a Cf-SiBCN ceramic-based prefabricated material; and S2, cooling to room temperature, and repeating the dipping-crosslinking curing-high-temperature cracking process for 6-10 times to obtain the Cf-SiBCN ceramic-based composite material, according to the Cf-SiBCN ceramic-based composite material and the preparation method thereof disclosed by the invention, the solid-phase polyborosilazane precursor is dissolved in the liquid-phase polyborosilazane precursor, so that the inherent defects of low-viscosity liquid polyborosilazane serving as a SiBCN precursor are overcome; meanwhile, the preparation efficiency of the Cf-SiBCN ceramic-based composite material is further improved by regulating and controlling the adding amount of the solid-phase polyborosilazane precursor.
本发明涉及陶瓷材料技术领域，具体涉及一种Cf‑SiBCN陶瓷基复合材料及其制备方法，包括如下步骤：步骤S1，将固相聚硼硅氮烷前驱体溶解在液相聚硼硅氮烷前驱体中，将混合前驱体引入碳纤维编织体内部，然后在高压环境下完成浸渍过程，并在真空环境或惰性气体保护下先升温交联固化后高温裂解，得到Cf‑SiBCN陶瓷基预制备材料；步骤S2，冷却至室温，重复浸渍‑交联固化‑高温裂解过程6～10次，得到所述Cf‑SiBCN陶瓷基复合材料；本发明的Cf‑SiBCN陶瓷基复合材料及其制备方法通过将固相聚硼硅氮烷前驱体溶解在液相聚硼硅氮烷前驱体中，克服了低粘度液态聚硼硅氮烷作为SiBCN前驱体的固有缺陷，同时通过调控固相聚硼硅氮烷前驱体的加入量进一步提升Cf‑SiBCN陶瓷基复合材料的制备效率。
Cf-SiBCN ceramic-based composite material and preparation method thereof
The invention relates to the technical field of ceramic materials, in particular to a Cf-SiBCN ceramic-based composite material and a preparation method thereof.The preparation method comprises the following steps that S1, a solid-phase polyborosilazane precursor is dissolved in a liquid-phase polyborosilazane precursor, the mixed precursor is introduced into a carbon fiber woven body, then the impregnation process is completed in a high-pressure environment, and a carbon fiber woven body is obtained; heating, cross-linking and curing in a vacuum environment or under the protection of inert gas, and then cracking at high temperature to obtain a Cf-SiBCN ceramic-based prefabricated material; and S2, cooling to room temperature, and repeating the dipping-crosslinking curing-high-temperature cracking process for 6-10 times to obtain the Cf-SiBCN ceramic-based composite material, according to the Cf-SiBCN ceramic-based composite material and the preparation method thereof disclosed by the invention, the solid-phase polyborosilazane precursor is dissolved in the liquid-phase polyborosilazane precursor, so that the inherent defects of low-viscosity liquid polyborosilazane serving as a SiBCN precursor are overcome; meanwhile, the preparation efficiency of the Cf-SiBCN ceramic-based composite material is further improved by regulating and controlling the adding amount of the solid-phase polyborosilazane precursor.
本发明涉及陶瓷材料技术领域，具体涉及一种Cf‑SiBCN陶瓷基复合材料及其制备方法，包括如下步骤：步骤S1，将固相聚硼硅氮烷前驱体溶解在液相聚硼硅氮烷前驱体中，将混合前驱体引入碳纤维编织体内部，然后在高压环境下完成浸渍过程，并在真空环境或惰性气体保护下先升温交联固化后高温裂解，得到Cf‑SiBCN陶瓷基预制备材料；步骤S2，冷却至室温，重复浸渍‑交联固化‑高温裂解过程6～10次，得到所述Cf‑SiBCN陶瓷基复合材料；本发明的Cf‑SiBCN陶瓷基复合材料及其制备方法通过将固相聚硼硅氮烷前驱体溶解在液相聚硼硅氮烷前驱体中，克服了低粘度液态聚硼硅氮烷作为SiBCN前驱体的固有缺陷，同时通过调控固相聚硼硅氮烷前驱体的加入量进一步提升Cf‑SiBCN陶瓷基复合材料的制备效率。
Cf-SiBCN ceramic-based composite material and preparation method thereof
Cf-SiBCN陶瓷基复合材料及其制备方法
LIU YUXUAN (Autor:in) / CHEN DAMING (Autor:in) / SUN BOQIAN (Autor:in) / SONG JUNTAO (Autor:in) / ZHANG WENZHENG (Autor:in) / FAN ZHEQIONG (Autor:in)
10.09.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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