A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of mullite fiber-based porous ceramic
The invention provides a preparation method of mullite fiber-based porous ceramic, which belongs to the technical field of thermal protection materials, and comprises the following steps: (1) preparing silica sol; (2) preparing mullite fiber slurry; (3) adding a preset amount of epoxypropane into the slurry prepared in the step (2) while stirring by using an electromagnetic stirrer, pouring into a mold, and carrying out pressure forming; (4) carrying out gel reaction; (5) demolding and drying the gelled green body; and (6) sintering the dried green body in a high-temperature furnace to obtain the mullite fiber-based porous ceramic. According to the method, the problem that silica sol or silicon boron sol migrates to the surface of a sample in the preparation process of the mullite fiber-based porous ceramic is solved, and the mullite fiber heat insulation tile material with relatively uniform strength is prepared.
本发明提供了一种莫来石纤维基多孔陶瓷的制备方法，属于热防护材料技术领域，其包括以下步骤：(1)制备硅溶胶；(2)制得莫来石纤维浆料；(3)在步骤（2）制备的浆料中边用电磁搅拌器搅拌边加入预定量的环氧丙烷，倒入模具中，加压成型；(4)进行凝胶反应；(5)将已经凝胶化的坯体进行脱模烘干；(6)将干燥好的坯体放入高温炉中进行烧结制备得到莫来石纤维基多孔陶瓷。本发明的方法，解决莫来石纤维基多孔陶瓷的制备过程中硅溶胶或硅硼溶胶向试样表面迁移的问题，制备强度较均匀的莫来石纤维隔热瓦材料。
Preparation method of mullite fiber-based porous ceramic
The invention provides a preparation method of mullite fiber-based porous ceramic, which belongs to the technical field of thermal protection materials, and comprises the following steps: (1) preparing silica sol; (2) preparing mullite fiber slurry; (3) adding a preset amount of epoxypropane into the slurry prepared in the step (2) while stirring by using an electromagnetic stirrer, pouring into a mold, and carrying out pressure forming; (4) carrying out gel reaction; (5) demolding and drying the gelled green body; and (6) sintering the dried green body in a high-temperature furnace to obtain the mullite fiber-based porous ceramic. According to the method, the problem that silica sol or silicon boron sol migrates to the surface of a sample in the preparation process of the mullite fiber-based porous ceramic is solved, and the mullite fiber heat insulation tile material with relatively uniform strength is prepared.
本发明提供了一种莫来石纤维基多孔陶瓷的制备方法，属于热防护材料技术领域，其包括以下步骤：(1)制备硅溶胶；(2)制得莫来石纤维浆料；(3)在步骤（2）制备的浆料中边用电磁搅拌器搅拌边加入预定量的环氧丙烷，倒入模具中，加压成型；(4)进行凝胶反应；(5)将已经凝胶化的坯体进行脱模烘干；(6)将干燥好的坯体放入高温炉中进行烧结制备得到莫来石纤维基多孔陶瓷。本发明的方法，解决莫来石纤维基多孔陶瓷的制备过程中硅溶胶或硅硼溶胶向试样表面迁移的问题，制备强度较均匀的莫来石纤维隔热瓦材料。
Preparation method of mullite fiber-based porous ceramic
一种莫来石纤维基多孔陶瓷的制备方法
LIU JIACHEN (author) / ZHANG JUNJUN (author) / WANG DEXUAN (author) / GUO ANRAN (author)
2022-11-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Preparation method of homogeneous mullite fiber-based porous ceramic
| European Patent Office | 2022
Preparation and Structure Characterization of Mullite Fiber Porous Ceramic
| British Library Online Contents | 2008
Preparation method of mullite porous ceramic by welding whisker
| European Patent Office | 2015