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A platform for research: civil engineering, architecture and urbanism
Ultralight ceramic foam composite heat storage material and preparation method thereof
The invention discloses an ultralight ceramic foam composite heat storage material and a preparation method thereof. The ultralight ceramic foam composite heat storage material is composed of silicon carbide foam ceramic and a phase change material doped with nanoparticles; and the phase change material is loaded in pores of the silicon carbide foamed ceramic. The silicon carbide foam ceramic is prepared by performing chemical vapor deposition on a metal nickel foam template to grow graphite and performing chemical reaction on an extracted graphite intermediate by utilizing a high-temperature silicon steam method, and the phase change material is prepared by uniformly dispersing nanoparticles in an inorganic salt or multi-element eutectic salt solution, performing ultrasonic treatment and drying. The pores of the ceramic foam with the phase change material are tightly filled by adopting a solution-assisted impregnation method and a vacuum impregnation method to obtain the ultralight ceramic foam composite heat storage material. The heat conductivity coefficient and the heat storage density of the composite material are improved at the same time, the silicon carbide foam in the corresponding form can be obtained by adopting nickel templates in different forms, and the preparation method is simple, low in cost, wide in controllability range and high in practicability.
本发明公开了一种超轻陶瓷泡沫复合储热材料及制备方法，由碳化硅泡沫陶瓷与掺杂纳米颗粒的相变材料组成；相变材料负载于碳化硅泡沫陶瓷的孔隙中。碳化硅泡沫陶瓷是在金属镍泡沫模板上进行化学气相沉积生长石墨，并利用高温硅蒸汽法对提取的石墨中间体进行化学反应制备而成，相变材料是将纳米颗粒均匀分散在无机盐或多元共晶盐溶液中进行超声处理并烘干后制备得到的。采用溶液辅助浸渍法和真空浸渍法将相变材料紧密地填充于陶瓷泡沫的孔隙中，即得超轻陶瓷泡沫复合储热材料。本发明实现了复合材料导热系数与储热密度的同时提升，可以采用不同形态的镍模板得到相应形态的碳化硅泡沫，制备方法简单，成本低，可调控性范围广，实用性高。
Ultralight ceramic foam composite heat storage material and preparation method thereof
The invention discloses an ultralight ceramic foam composite heat storage material and a preparation method thereof. The ultralight ceramic foam composite heat storage material is composed of silicon carbide foam ceramic and a phase change material doped with nanoparticles; and the phase change material is loaded in pores of the silicon carbide foamed ceramic. The silicon carbide foam ceramic is prepared by performing chemical vapor deposition on a metal nickel foam template to grow graphite and performing chemical reaction on an extracted graphite intermediate by utilizing a high-temperature silicon steam method, and the phase change material is prepared by uniformly dispersing nanoparticles in an inorganic salt or multi-element eutectic salt solution, performing ultrasonic treatment and drying. The pores of the ceramic foam with the phase change material are tightly filled by adopting a solution-assisted impregnation method and a vacuum impregnation method to obtain the ultralight ceramic foam composite heat storage material. The heat conductivity coefficient and the heat storage density of the composite material are improved at the same time, the silicon carbide foam in the corresponding form can be obtained by adopting nickel templates in different forms, and the preparation method is simple, low in cost, wide in controllability range and high in practicability.
本发明公开了一种超轻陶瓷泡沫复合储热材料及制备方法，由碳化硅泡沫陶瓷与掺杂纳米颗粒的相变材料组成；相变材料负载于碳化硅泡沫陶瓷的孔隙中。碳化硅泡沫陶瓷是在金属镍泡沫模板上进行化学气相沉积生长石墨，并利用高温硅蒸汽法对提取的石墨中间体进行化学反应制备而成，相变材料是将纳米颗粒均匀分散在无机盐或多元共晶盐溶液中进行超声处理并烘干后制备得到的。采用溶液辅助浸渍法和真空浸渍法将相变材料紧密地填充于陶瓷泡沫的孔隙中，即得超轻陶瓷泡沫复合储热材料。本发明实现了复合材料导热系数与储热密度的同时提升，可以采用不同形态的镍模板得到相应形态的碳化硅泡沫，制备方法简单，成本低，可调控性范围广，实用性高。
Ultralight ceramic foam composite heat storage material and preparation method thereof
一种超轻陶瓷泡沫复合储热材料及制备方法
LIU XIANGLEI (author) / LUO QINGYANG (author) / XUAN YIMIN (author)
2021-11-12
Patent
Electronic Resource
Chinese
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