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Porous silicon carbide ceramic skeleton based on biomass powder as carbon source and preparation method of porous silicon carbide ceramic skeleton
The invention relates to a porous silicon carbide ceramic skeleton based on biomass powder as a carbon source and a preparation method thereof, the porous silicon carbide ceramic skeleton mainly comprises porous silicon carbide ceramic skeletons with different pore forms and arrangement rules, and the pore forms mainly comprise layered pores, honeycomb pores, dendritic pores and round pores. The pore arrangement rule mainly comprises directional arrangement and random arrangement, the porosity is 50%-90%, crystal grains are very compact, the porosity height is adjustable, and meanwhile, the heat conductivity coefficient and the mechanical strength are extremely high. The preparation method overcomes the defect that high porosity and crystal grain close packing cannot be achieved at the same time in a traditional silicon carbide skeleton preparation process, the prepared silicon carbide skeleton is highly ordered, the silicon carbide crystal boundary spacing is extremely small, the heat conductivity coefficient is greatly increased, the technological process is simple, the cost is low, raw materials are wide in source, and the preparation method is suitable for industrial production. The method is suitable for large-scale preparation. The porous silicon carbide ceramic skeleton can be used in the fields of phase change heat storage, building structures, filtering systems and the like.
本发明涉及一种基于生物质粉为碳源的多孔碳化硅陶瓷骨架及其制备方法，其主要包括不同孔隙形态及排列规律的多孔碳化硅陶瓷骨架，其中孔隙形态主要包括层状孔、蜂窝状孔、树枝状孔、圆孔，孔隙排列规律主要包括定向排列与随机排列，孔隙率为50％～90％，其晶粒之间十分致密，孔隙率高度可调，同时具有极高的导热系数与机械强度。本发明涉及的制备方法克服了传统碳化硅制备骨架工艺高孔隙率与晶粒紧密堆积不能同时兼得的痛点，使得制备的碳化硅骨架高度有序且碳化硅晶界间距极小，导热系数得到大幅提高，且工艺流程简单、成本低廉、原材料来源广泛，适合大规模制备。本发明的多孔碳化硅陶瓷骨架可用于相变储热、建筑结构、过滤系统等领域。
Porous silicon carbide ceramic skeleton based on biomass powder as carbon source and preparation method of porous silicon carbide ceramic skeleton
The invention relates to a porous silicon carbide ceramic skeleton based on biomass powder as a carbon source and a preparation method thereof, the porous silicon carbide ceramic skeleton mainly comprises porous silicon carbide ceramic skeletons with different pore forms and arrangement rules, and the pore forms mainly comprise layered pores, honeycomb pores, dendritic pores and round pores. The pore arrangement rule mainly comprises directional arrangement and random arrangement, the porosity is 50%-90%, crystal grains are very compact, the porosity height is adjustable, and meanwhile, the heat conductivity coefficient and the mechanical strength are extremely high. The preparation method overcomes the defect that high porosity and crystal grain close packing cannot be achieved at the same time in a traditional silicon carbide skeleton preparation process, the prepared silicon carbide skeleton is highly ordered, the silicon carbide crystal boundary spacing is extremely small, the heat conductivity coefficient is greatly increased, the technological process is simple, the cost is low, raw materials are wide in source, and the preparation method is suitable for industrial production. The method is suitable for large-scale preparation. The porous silicon carbide ceramic skeleton can be used in the fields of phase change heat storage, building structures, filtering systems and the like.
本发明涉及一种基于生物质粉为碳源的多孔碳化硅陶瓷骨架及其制备方法，其主要包括不同孔隙形态及排列规律的多孔碳化硅陶瓷骨架，其中孔隙形态主要包括层状孔、蜂窝状孔、树枝状孔、圆孔，孔隙排列规律主要包括定向排列与随机排列，孔隙率为50％～90％，其晶粒之间十分致密，孔隙率高度可调，同时具有极高的导热系数与机械强度。本发明涉及的制备方法克服了传统碳化硅制备骨架工艺高孔隙率与晶粒紧密堆积不能同时兼得的痛点，使得制备的碳化硅骨架高度有序且碳化硅晶界间距极小，导热系数得到大幅提高，且工艺流程简单、成本低廉、原材料来源广泛，适合大规模制备。本发明的多孔碳化硅陶瓷骨架可用于相变储热、建筑结构、过滤系统等领域。
Porous silicon carbide ceramic skeleton based on biomass powder as carbon source and preparation method of porous silicon carbide ceramic skeleton
一种基于生物质粉为碳源的多孔碳化硅陶瓷骨架及其制备方法
LIU XIANGLEI (author) / SONG YANAN (author) / XUAN YIMIN (author)
2022-05-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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