Porous zirconia ceramic and preparation method thereof
The technology of zirconia ceramics and zirconia powder is applied in the field of porous zirconia ceramics and its preparation, which can solve the problems of polluting the environment, endangering health, and easily generating toxic gases, and achieving the effects of simple process and low production cost.
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Embodiment 1
[0031] The raw material composition of porous zirconia ceramics is as follows: zirconia powder 89.99%, polyethyleneimine 1%, animal protein foaming agent 8%, hydroxypropyl methylcellulose 0.01%, polyethylene glycol (600) 1% .
[0032] The preparation process is as follows:
[0033] (1) dissolving zirconia powder in pure water to prepare a 25wt% aqueous solution, then adding polyethyleneimine and polyethylene glycol, and mixing evenly to obtain a slurry;
[0034] (2) Add animal protein foaming agent to (1), then add hydroxypropyl methylcellulose, grind it in a planetary mill for 30 minutes, and pour it into a polytetrafluoroethylene mold coated with waste engine oil after grinding , and then placed in a drying oven, foamed and solidified for 10 hours at a temperature of 75°C, and waited for the slurry to solidify before demolding to obtain a ceramic green body;
[0035] (3) The ceramic green body was sintered at 1450° C. for 2 hours to obtain porous zirconia ceramics.
Embodiment 2
[0037] The raw material composition of the porous zirconia ceramic is as follows: 91.99% of zirconia powder, 2% of polyethyleneimine, 5% of animal protein foaming agent, 0.01% of paraffin emulsion, and 1% of polyethylene glycol (600).
[0038] The preparation process is as follows:
[0039] (1) dissolving the zirconia powder in pure water to prepare a 30wt% aqueous solution, then adding polyethyleneimine and polyethylene glycol, and mixing evenly to obtain a slurry;
[0040] (2) Add animal protein foaming agent to (1), then add hydroxypropyl methylcellulose, grind it in a planetary mill for 40 minutes, and pour it into a polytetrafluoroethylene mold coated with waste engine oil after grinding Forming to obtain a ceramic green body;
[0041] (3) Place the ceramic green body with a polytetrafluoroethylene mold in a drying oven, foam and solidify at 80°C for 12 hours, and wait for the slurry to solidify before demoulding to obtain a ceramic green body. The blank was sintered at...
Embodiment 3
[0043] The raw material composition of the porous zirconia ceramic is as follows: 88.99% of zirconia powder, 1% of polyacrylamide, 8% of animal protein foaming agent, 0.01% of paraffin wax emulsion, and 2% of polyvinyl alcohol.
[0044] The preparation process is as follows:
[0045] (1) Dissolving the zirconia powder in pure water to prepare a 40wt% aqueous solution, then adding polyethyleneimine and polyvinyl alcohol, and mixing evenly to obtain a slurry;
[0046] (2) Add animal protein foaming agent to (1), then add paraffin wax emulsion, grind evenly in a planetary mill for 45 minutes, after grinding, pour it into a polytetrafluoroethylene mold coated with waste engine oil for molding, and obtain a ceramic blank body;
[0047] (3) Place the ceramic green body with a polytetrafluoroethylene mold in a drying oven, foam and solidify at a temperature of 90°C for 12 hours, wait for the slurry to solidify and release the mold to obtain a ceramic green body. The blank was sinte...
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