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Method for preparing aluminum oxide/mullite foamed ceramic
The invention provides a method for preparing aluminum oxide/mullite foamed ceramic. The method is characterized in that a silicon sol and Al2O3 fine powder are mixed; nanometer SiO2 colloid particles in the silicon sol can be attached on the surfaces of Al2O3 particles to achieve single-layer saturation distribution; colloidal particles fill clearances of the Al2O3 particles by full contact; the silicon sol is gelatinized under the low temperature to generate a Si-O-Si lattice space structure for achieving the curing and forming of foamed slurry; after being cured, the ceramic foams can be directly heated and dried without independent drying or rubber discharging links and then are roasted at the high temperature to obtain the aluminum oxide/mullite foamed ceramic. According to the method, the process operation is simple, and the conditions are easily controlled; a produced green body is small in shrinkage and deformation during forming and drying; the yield of the aluminum oxide/mullite foamed ceramic is high; the production cycle is short; the production cost is low; mass production is achieved.
Method for preparing aluminum oxide/mullite foamed ceramic
The invention provides a method for preparing aluminum oxide/mullite foamed ceramic. The method is characterized in that a silicon sol and Al2O3 fine powder are mixed; nanometer SiO2 colloid particles in the silicon sol can be attached on the surfaces of Al2O3 particles to achieve single-layer saturation distribution; colloidal particles fill clearances of the Al2O3 particles by full contact; the silicon sol is gelatinized under the low temperature to generate a Si-O-Si lattice space structure for achieving the curing and forming of foamed slurry; after being cured, the ceramic foams can be directly heated and dried without independent drying or rubber discharging links and then are roasted at the high temperature to obtain the aluminum oxide/mullite foamed ceramic. According to the method, the process operation is simple, and the conditions are easily controlled; a produced green body is small in shrinkage and deformation during forming and drying; the yield of the aluminum oxide/mullite foamed ceramic is high; the production cycle is short; the production cost is low; mass production is achieved.
Method for preparing aluminum oxide/mullite foamed ceramic
YU JUANLI (author) / LYU YI (author) / ZHAO YINGMIN (author) / GUO SHIFENG (author) / PEI YUCHEN (author)
2015-04-08
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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