Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing high-porosity in-situ grown magnesium borate whisker porous ceramics
The invention discloses a method for preparing high-porosity in-situ grown magnesium borate whisker porous ceramics. The method is that basic magnesium carbonate and boric acid are used as the raw materials; nitrate is used as a catalyst; sodium methyl cellulose is used as a binder; and polyacrylamide is used as a dispersing agent. The method comprises the steps of (1) mixing the materials through a ball mill; (2) preparing slurry; (3) shaping by injection molding and directionally freezing and curing; (4) freezing and drying in a vacuum condition; (5) sintering at the normal temperature; and (6) washing. Compared with the prior art, the method has the advantages that the in-situ grown magnesium borate whisker porous ceramics with high porosity reaching 85% can be prepared, the problem of relatively low porosity of the in-situ grown magnesium borate whisker porous ceramics prepared by the prior art can be solved, and the problem that non-uniform material mixing leads to non-uniform growing of whiskers in the magnesium borate whisker porous ceramics preparation process can be solved.
Method for preparing high-porosity in-situ grown magnesium borate whisker porous ceramics
The invention discloses a method for preparing high-porosity in-situ grown magnesium borate whisker porous ceramics. The method is that basic magnesium carbonate and boric acid are used as the raw materials; nitrate is used as a catalyst; sodium methyl cellulose is used as a binder; and polyacrylamide is used as a dispersing agent. The method comprises the steps of (1) mixing the materials through a ball mill; (2) preparing slurry; (3) shaping by injection molding and directionally freezing and curing; (4) freezing and drying in a vacuum condition; (5) sintering at the normal temperature; and (6) washing. Compared with the prior art, the method has the advantages that the in-situ grown magnesium borate whisker porous ceramics with high porosity reaching 85% can be prepared, the problem of relatively low porosity of the in-situ grown magnesium borate whisker porous ceramics prepared by the prior art can be solved, and the problem that non-uniform material mixing leads to non-uniform growing of whiskers in the magnesium borate whisker porous ceramics preparation process can be solved.
Method for preparing high-porosity in-situ grown magnesium borate whisker porous ceramics
CHEN SHANHUA (Autor:in) / GU LIHUAN (Autor:in) / SUN GANG (Autor:in) / CHEN BO (Autor:in) / CHENG JUNCHAO (Autor:in) / JIANG ZHIPENG (Autor:in)
01.04.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
In situ synthesis of porous ceramics with a framework structure of aluminium borate whisker
| British Library Online Contents | 1998
In situ nitrided coating of aluminum borate whisker
| British Library Online Contents | 2001
| Europäisches Patentamt | 2021
In situ synthesis of porous ceramics with a framework structure of magnesium borate whiskers
| British Library Online Contents | 2014