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Preparation method of high-temperature-resistant filter material
The invention relates to a preparation method of a high-temperature-resistant filter material, and belongs to the technical field of filter materials. According to the invention, magnesium oxide is used as a raw material, an organic foam impregnation method is adopted to prepare foamed ceramic, and the foamed ceramic is used as a matrix, and carbon nanotubes are grown in situ in the foamed ceramicthrough a chemical vapor reaction to prepare a high-temperature-resistant filter material; the MgO foamed ceramic material has a good three-dimensional reticular skeleton structure, which can filterout various inclusions and impurities in high-temperature flue gas; the foamed ceramic can efficiently and mechanically intercept and block slag and intercept inclusions larger than pores; with the increase of the intercepted inclusions, a layer of filter cake can be continuously formed, and finer inclusions can be filtered out; the strength, toughness, electric conductivity, heat conductivity andother properties of the carbon nanotubes far exceed those of the ceramic material; and by introducing the carbon nanotubes into the ceramic matrix as a reinforcing phase, the strength and toughness of the material can be improved, and the high temperature resistance of the filter material can also be improved.
本发明涉及一种耐高温过滤材料的制备方法，属于过滤材料技术领域。本发明以氧化镁为原料，采用有机泡沫浸渍法制备出一种泡沫陶瓷，以泡沫陶瓷为基体，通过化学气相反应在泡沫陶瓷体内原位生长碳纳米管，制备出一种耐高温过滤材料；MgO泡沫陶瓷材料具有良好的三维立体网状骨架结构，可以过滤高温烟气中的各种夹杂和杂质，泡沫陶瓷能够高效率地机械拦截挡渣，把大于孔眼的夹杂物拦截掉，随着拦截夹杂物的增多，会不断形成了一层滤饼，可滤除更为细小的夹杂物；碳纳米管在强度、韧性、导电和导热等性能方面远远超过陶瓷材料，将碳纳米管作为增强相引入陶瓷基体，能够提高材料的强度和韧性，也能提高过滤材料的耐高温性能。
Preparation method of high-temperature-resistant filter material
The invention relates to a preparation method of a high-temperature-resistant filter material, and belongs to the technical field of filter materials. According to the invention, magnesium oxide is used as a raw material, an organic foam impregnation method is adopted to prepare foamed ceramic, and the foamed ceramic is used as a matrix, and carbon nanotubes are grown in situ in the foamed ceramicthrough a chemical vapor reaction to prepare a high-temperature-resistant filter material; the MgO foamed ceramic material has a good three-dimensional reticular skeleton structure, which can filterout various inclusions and impurities in high-temperature flue gas; the foamed ceramic can efficiently and mechanically intercept and block slag and intercept inclusions larger than pores; with the increase of the intercepted inclusions, a layer of filter cake can be continuously formed, and finer inclusions can be filtered out; the strength, toughness, electric conductivity, heat conductivity andother properties of the carbon nanotubes far exceed those of the ceramic material; and by introducing the carbon nanotubes into the ceramic matrix as a reinforcing phase, the strength and toughness of the material can be improved, and the high temperature resistance of the filter material can also be improved.
本发明涉及一种耐高温过滤材料的制备方法，属于过滤材料技术领域。本发明以氧化镁为原料，采用有机泡沫浸渍法制备出一种泡沫陶瓷，以泡沫陶瓷为基体，通过化学气相反应在泡沫陶瓷体内原位生长碳纳米管，制备出一种耐高温过滤材料；MgO泡沫陶瓷材料具有良好的三维立体网状骨架结构，可以过滤高温烟气中的各种夹杂和杂质，泡沫陶瓷能够高效率地机械拦截挡渣，把大于孔眼的夹杂物拦截掉，随着拦截夹杂物的增多，会不断形成了一层滤饼，可滤除更为细小的夹杂物；碳纳米管在强度、韧性、导电和导热等性能方面远远超过陶瓷材料，将碳纳米管作为增强相引入陶瓷基体，能够提高材料的强度和韧性，也能提高过滤材料的耐高温性能。
Preparation method of high-temperature-resistant filter material
一种耐高温过滤材料的制备方法
LIANG GUANSHENG (author)
2020-04-21
Patent
Electronic Resource
Chinese
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