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Preparation method of in-situ synthesis SiC (nw, np)-ZrB2-ZrC modified carbon/carbon composite material
The invention discloses a preparation method of an in-situ synthesis SiC (nw, np)-ZrB2-ZrC modified C/C composite material, which adopts a precursor conversion method, takes B-Si-Zr composite sol as a precursor, regulates and controls the viscosity of the precursor, and adopts the thought of zonal regulation and control on the inside of fiber bundles, between the bundles and the surface layer of a preform (the low-viscosity sol is adhered in small holes in the bundles, high-viscosity sol fills large holes between the bundles, etc.), the SiC (nw, np)-ZrB2-ZrC multiphase ceramic matrix is generated through synchronous in-situ reaction in C/C in combination with an impregnation and cracking process. According to the modified C/C composite material, nanowires and ceramic particles are uniformly dispersed, ceramic phase components are adjustable, and the ceramic particles are dispersed, distributed, uniform and fine, so that excellent oxidation ablation resistance is expected to be obtained.
本发明公开了一种原位自生SiC(nw,np)‑ZrB2‑ZrC改性C/C复合材料的制备方法，采用前驱体转化法，以B‑Si‑Zr复合溶胶为前驱体，通过调控前驱体粘度，采用对纤维束内、束间及预制体表层分区调控的思路(低粘度溶胶粘附在束内小孔中，高粘度溶胶填充束间大孔等)，结合浸渍裂解工艺，在C/C内同步原位反应生成SiC(nw,np)‑ZrB2‑ZrC复相陶瓷基体。改性后的C/C复合材料，纳米线与陶瓷颗粒均匀分散，陶瓷相组分可调，陶瓷颗粒弥散分布且均匀细小，有望获得优异的抗氧化烧蚀性能性能。
Preparation method of in-situ synthesis SiC (nw, np)-ZrB2-ZrC modified carbon/carbon composite material
The invention discloses a preparation method of an in-situ synthesis SiC (nw, np)-ZrB2-ZrC modified C/C composite material, which adopts a precursor conversion method, takes B-Si-Zr composite sol as a precursor, regulates and controls the viscosity of the precursor, and adopts the thought of zonal regulation and control on the inside of fiber bundles, between the bundles and the surface layer of a preform (the low-viscosity sol is adhered in small holes in the bundles, high-viscosity sol fills large holes between the bundles, etc.), the SiC (nw, np)-ZrB2-ZrC multiphase ceramic matrix is generated through synchronous in-situ reaction in C/C in combination with an impregnation and cracking process. According to the modified C/C composite material, nanowires and ceramic particles are uniformly dispersed, ceramic phase components are adjustable, and the ceramic particles are dispersed, distributed, uniform and fine, so that excellent oxidation ablation resistance is expected to be obtained.
本发明公开了一种原位自生SiC(nw,np)‑ZrB2‑ZrC改性C/C复合材料的制备方法，采用前驱体转化法，以B‑Si‑Zr复合溶胶为前驱体，通过调控前驱体粘度，采用对纤维束内、束间及预制体表层分区调控的思路(低粘度溶胶粘附在束内小孔中，高粘度溶胶填充束间大孔等)，结合浸渍裂解工艺，在C/C内同步原位反应生成SiC(nw,np)‑ZrB2‑ZrC复相陶瓷基体。改性后的C/C复合材料，纳米线与陶瓷颗粒均匀分散，陶瓷相组分可调，陶瓷颗粒弥散分布且均匀细小，有望获得优异的抗氧化烧蚀性能性能。
Preparation method of in-situ synthesis SiC (nw, np)-ZrB2-ZrC modified carbon/carbon composite material
一种原位自生SiC(nw,np)-ZrB2-ZrC改性碳/碳复合材料的制备方法
LIU CHANGQING (Autor:in) / YUAN XIAOXIAO (Autor:in) / WANG WANTING (Autor:in) / OUYANG HAIBO (Autor:in) / LI CHENGXIN (Autor:in)
17.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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