Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of porous silicon carbide ceramic material and preparation method of phase change heat storage material of porous silicon carbide ceramic material
The invention discloses a preparation method of a porous silicon carbide ceramic material and a preparation method of a phase change heat storage material of the porous silicon carbide ceramic material. According to the ceramic material, a matrix raw material is adopted, NaOH-Na2SO3 and H2O2 are adopted for chemical treatment to remove part of lignin and cellulose in wood so as to increase the porosity, then carbonization and molten silicon reaction are performed, redundant silicon is removed, porous silicon carbide ceramic is obtained, the silicon carbide ceramic with different pores is obtained by changing the time of chemical treatment, and the porosity of the ceramic material is increased. The pore range of the prepared silicon carbide ceramic is 55%-80%. And filling pores of the porous silicon carbide with the polyethylene glycol phase-change material by adopting a vacuum impregnation method to obtain the porous silicon carbide ceramic-based phase-change heat storage material. The porous silicon carbide ceramic-based phase change heat storage material has the characteristics of high porosity and high thermal conductivity, and an effective method is provided for developing a more efficient solar energy storage technology based on a phase change material.
本发明公开了一种多孔碳化硅陶瓷材料的制法及其相变储热材料的制法。该陶瓷材料以基体原料，采用NaOH‑Na2SO3、H2O2化学处理去除木材中的部分木质素和纤维素以增大孔隙率，再经碳化及与熔融硅反应并去除多余硅后得到多孔碳化硅陶瓷，通过改变化学处理的时间，得到不同孔隙的碳化硅陶瓷，所制备的碳化硅陶瓷孔隙范围为55％～80％。采用真空浸渍法，将聚乙二醇相变材料填充进多孔碳化硅的孔隙中，即可得到多孔碳化硅陶瓷基相变储热材料。本发明的多孔碳化硅陶瓷基相变储热具有孔隙率高、导热率高的特点，为发展基于相变材料的更高效太阳能储存技术提供了一种有效方法。
Preparation method of porous silicon carbide ceramic material and preparation method of phase change heat storage material of porous silicon carbide ceramic material
The invention discloses a preparation method of a porous silicon carbide ceramic material and a preparation method of a phase change heat storage material of the porous silicon carbide ceramic material. According to the ceramic material, a matrix raw material is adopted, NaOH-Na2SO3 and H2O2 are adopted for chemical treatment to remove part of lignin and cellulose in wood so as to increase the porosity, then carbonization and molten silicon reaction are performed, redundant silicon is removed, porous silicon carbide ceramic is obtained, the silicon carbide ceramic with different pores is obtained by changing the time of chemical treatment, and the porosity of the ceramic material is increased. The pore range of the prepared silicon carbide ceramic is 55%-80%. And filling pores of the porous silicon carbide with the polyethylene glycol phase-change material by adopting a vacuum impregnation method to obtain the porous silicon carbide ceramic-based phase-change heat storage material. The porous silicon carbide ceramic-based phase change heat storage material has the characteristics of high porosity and high thermal conductivity, and an effective method is provided for developing a more efficient solar energy storage technology based on a phase change material.
本发明公开了一种多孔碳化硅陶瓷材料的制法及其相变储热材料的制法。该陶瓷材料以基体原料，采用NaOH‑Na2SO3、H2O2化学处理去除木材中的部分木质素和纤维素以增大孔隙率，再经碳化及与熔融硅反应并去除多余硅后得到多孔碳化硅陶瓷，通过改变化学处理的时间，得到不同孔隙的碳化硅陶瓷，所制备的碳化硅陶瓷孔隙范围为55％～80％。采用真空浸渍法，将聚乙二醇相变材料填充进多孔碳化硅的孔隙中，即可得到多孔碳化硅陶瓷基相变储热材料。本发明的多孔碳化硅陶瓷基相变储热具有孔隙率高、导热率高的特点，为发展基于相变材料的更高效太阳能储存技术提供了一种有效方法。
Preparation method of porous silicon carbide ceramic material and preparation method of phase change heat storage material of porous silicon carbide ceramic material
一种多孔碳化硅陶瓷材料的制法及其相变储热材料的制法
LIU XIANGLEI (Autor:in) / XU QIAO (Autor:in) / XUAN YIMIN (Autor:in)
07.03.2023
Patent
Elektronische Ressource
Chinesisch
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