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Porous silicon carbide-based composite ceramic material as well as preparation method and application thereof
The invention relates to a porous silicon carbide-based composite ceramic material as well as a preparation method and application thereof. The method comprises the steps: 1) dipping a porous carbon template in a liquid polycarbosilane precursor dissolved with a zirconium-containing polymer to obtain a silicon carbide-based composite ceramic precursor dipped carbon template; and 2) curing the carbon template dipped with the silicon carbide-based composite ceramic precursor, and carrying out high-temperature ceramization in a protective atmosphere to obtain the porous silicon carbide-based composite ceramic material. The composite ceramic material belongs to a light composite ceramic material, is low in thermal conductivity, has a thermal conductivity coefficient of 0.12-0.66 W*m<-1>*K<-1>,can be used as a thermal insulation material, and meets the requirements of thermal insulation, energy conversion and the like at high temperature. According to the preparation method, the porous structure and the microscopic morphology of the carbon template can be well reserved, and the preparation method is low in cost, high in yield, good in reproducibility, easy to implement, high in expansibility and high in application value.
本发明涉及一种多孔碳化硅基复合陶瓷材料及其制备方法和用途。所述方法包括：1)将多孔碳模板浸渍在溶有含锆聚合物的液态聚碳硅烷前驱体中，得到碳化硅基复合陶瓷前驱体浸渍的碳模板；2)将碳化硅基复合陶瓷前驱体浸渍的碳模板，进行固化，然后在保护性气氛中进行高温陶瓷化，得到所述的多孔碳化硅基复合陶瓷材料。所述复合陶瓷材料，属于轻质复合陶瓷材料，热导率低，导热系数为0.12‑0.66W·m·K，可用作隔热材料，满足高温下隔热和能源转化等方面的需求。所述制备方法，使得碳模板的多孔结构和显微形貌可以很好地被保留下来，成本低廉、产率较高和重现性好，易于实现，具有较强的拓展性和较高的应用价值。
Porous silicon carbide-based composite ceramic material as well as preparation method and application thereof
The invention relates to a porous silicon carbide-based composite ceramic material as well as a preparation method and application thereof. The method comprises the steps: 1) dipping a porous carbon template in a liquid polycarbosilane precursor dissolved with a zirconium-containing polymer to obtain a silicon carbide-based composite ceramic precursor dipped carbon template; and 2) curing the carbon template dipped with the silicon carbide-based composite ceramic precursor, and carrying out high-temperature ceramization in a protective atmosphere to obtain the porous silicon carbide-based composite ceramic material. The composite ceramic material belongs to a light composite ceramic material, is low in thermal conductivity, has a thermal conductivity coefficient of 0.12-0.66 W*m<-1>*K<-1>,can be used as a thermal insulation material, and meets the requirements of thermal insulation, energy conversion and the like at high temperature. According to the preparation method, the porous structure and the microscopic morphology of the carbon template can be well reserved, and the preparation method is low in cost, high in yield, good in reproducibility, easy to implement, high in expansibility and high in application value.
本发明涉及一种多孔碳化硅基复合陶瓷材料及其制备方法和用途。所述方法包括：1)将多孔碳模板浸渍在溶有含锆聚合物的液态聚碳硅烷前驱体中，得到碳化硅基复合陶瓷前驱体浸渍的碳模板；2)将碳化硅基复合陶瓷前驱体浸渍的碳模板，进行固化，然后在保护性气氛中进行高温陶瓷化，得到所述的多孔碳化硅基复合陶瓷材料。所述复合陶瓷材料，属于轻质复合陶瓷材料，热导率低，导热系数为0.12‑0.66W·m·K，可用作隔热材料，满足高温下隔热和能源转化等方面的需求。所述制备方法，使得碳模板的多孔结构和显微形貌可以很好地被保留下来，成本低廉、产率较高和重现性好，易于实现，具有较强的拓展性和较高的应用价值。
Porous silicon carbide-based composite ceramic material as well as preparation method and application thereof
一种多孔碳化硅基复合陶瓷材料及其制备方法和用途
WANG XIAOFEI (author) / LI YULEI (author) / ZHU MINGYU (author) / XU JIAO (author) / ZHAO YUSHENG (author)
2020-04-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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