Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lightweight carbon-ceramic heat prevention and insulation integrated material with SiC ceramic layer and preparation of lightweight carbon-ceramic heat prevention and insulation integrated material
The invention discloses a light carbon-ceramic heat insulation integrated material and a preparation method thereof, and belongs to the technical field of ultrahigh-temperature heat protection materials. According to the preparation method, a nano-powder-induced SiC nanowire synergistic low-temperature gas-solid reaction ceramization technology is adopted, a nanowire growth induction layer containing nano ceramic powder is arranged on the surface of the light carbon-based composite material, the SiC nanowire is induced to be generated under a low-temperature silicon-carbon gas-solid reaction, and surface ceramization of the light carbon-based composite material is realized. The surface layer of the obtained material is a gradient SiC ceramic layer toughened by SiC nanowires with the size of 100-800 microns, the gradient SiC ceramic layer plays a role in resisting oxidation and ablation at the ultrahigh temperature, the bottom layer is an unreacted light carbon-based composite material substrate, the roles in heat insulation and bearing at the ultrahigh temperature are played, and then integration of non-ablative heat insulation and bearing at the ultrahigh temperature is achieved.
本发明公开了一种轻质碳‑陶防隔热一体化材料及其制备方法，属于超高温热防护材料技术领域。本发明采用纳米粉体诱导SiC纳米线协同低温气固反应陶瓷化技术，通过在轻质碳基复合材料表面设置含有纳米陶瓷粉体的纳米线生长诱导层，在低温硅碳气‑固反应下诱导生成SiC纳米线，并实现轻质碳基复合材料表层陶瓷化。所得材料表层为100～800μm的SiC纳米线增韧的梯度SiC陶瓷层，起到超高温抗氧化、抗烧蚀的作用，底层为未反应的轻质碳基复合材料基底，起到超高温隔热和承载的作用，进而实现超高温非烧蚀防隔热承载一体化。
Lightweight carbon-ceramic heat prevention and insulation integrated material with SiC ceramic layer and preparation of lightweight carbon-ceramic heat prevention and insulation integrated material
The invention discloses a light carbon-ceramic heat insulation integrated material and a preparation method thereof, and belongs to the technical field of ultrahigh-temperature heat protection materials. According to the preparation method, a nano-powder-induced SiC nanowire synergistic low-temperature gas-solid reaction ceramization technology is adopted, a nanowire growth induction layer containing nano ceramic powder is arranged on the surface of the light carbon-based composite material, the SiC nanowire is induced to be generated under a low-temperature silicon-carbon gas-solid reaction, and surface ceramization of the light carbon-based composite material is realized. The surface layer of the obtained material is a gradient SiC ceramic layer toughened by SiC nanowires with the size of 100-800 microns, the gradient SiC ceramic layer plays a role in resisting oxidation and ablation at the ultrahigh temperature, the bottom layer is an unreacted light carbon-based composite material substrate, the roles in heat insulation and bearing at the ultrahigh temperature are played, and then integration of non-ablative heat insulation and bearing at the ultrahigh temperature is achieved.
本发明公开了一种轻质碳‑陶防隔热一体化材料及其制备方法，属于超高温热防护材料技术领域。本发明采用纳米粉体诱导SiC纳米线协同低温气固反应陶瓷化技术，通过在轻质碳基复合材料表面设置含有纳米陶瓷粉体的纳米线生长诱导层，在低温硅碳气‑固反应下诱导生成SiC纳米线，并实现轻质碳基复合材料表层陶瓷化。所得材料表层为100～800μm的SiC纳米线增韧的梯度SiC陶瓷层，起到超高温抗氧化、抗烧蚀的作用，底层为未反应的轻质碳基复合材料基底，起到超高温隔热和承载的作用，进而实现超高温非烧蚀防隔热承载一体化。
Lightweight carbon-ceramic heat prevention and insulation integrated material with SiC ceramic layer and preparation of lightweight carbon-ceramic heat prevention and insulation integrated material
具有SiC陶瓷层的轻质碳-陶防隔热一体化材料及制备
YAN MENG (Autor:in) / TANG SUFANG (Autor:in) / HU CHENGLONG (Autor:in) / PANG SHENGYANG (Autor:in) / LI JIAN (Autor:in) / ZHAO RIDA (Autor:in)
10.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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