Preparation method of aluminum oxide porous ceramic with high closed porosity
A technology of porous ceramics and alumina, applied in the field of porous materials, can solve the problems of complex process and many kinds of additives, and achieve the effects of simple preparation process, high compressive strength and high closed porosity
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Embodiment 1
[0027] A preparation method of alumina porous ceramics with high closed porosity, comprising the steps of:
[0028] ①Raw material treatment: Ball mill the raw materials and pass through a 325-mesh sieve, and the particle size of all raw materials is controlled at 45-60 μm;
[0029] ② Raw material ratio: The mass percentage of each raw material is: alumina 50%, quartz 30%, Suzhou soil 10%, Australian clay 10%, CMC 0.6% (additional), gum arabic 0.7% (additional), pore forming agent Addition amount is 1.1g / (100g powder);
[0030] ③Raw material mixing: ball mill alumina, quartz, Suzhou soil, and Australian clay for 2 hours according to the ratio, and mark it as powder A; the quality of tap water accounts for 40% of the total mass of the slurry, and weigh the corresponding mass of CMC according to the ratio of raw materials 1. Dissolve gum arabic in tap water for later use, and mark it as solution B; mix powder A and solution B for 30 minutes to obtain a slurry. Add the pore-form...
Embodiment 2
[0037] A preparation method of alumina porous ceramics with high closed porosity, comprising the steps of:
[0038] ①Raw material treatment: Ball mill the raw materials and pass through a 325-mesh sieve, and the particle size of all raw materials is controlled at 45-60 μm;
[0039] ② Raw material ratio: the mass percentage of each raw material is: alumina 60%, quartz 20%, Suzhou soil 10%, North Sea kaolin 10%, CMC 0.6% (additional), gum arabic 0.6% (additional), pore forming agent Addition amount is 1.2g / (100g powder);
[0040]③Raw material mixing: ball mill alumina, quartz, Suzhou soil, and Beihai kaolin for 2 hours according to the ratio, and mark it as powder A; the quality of tap water accounts for 40% of the total mass of the slurry, and weigh the corresponding mass of CMC according to the ratio of raw materials 1. Dissolve gum arabic in tap water for later use, and mark it as solution B; mix powder A and solution B for 30 minutes to obtain a slurry. Add the pore-formin...
Embodiment 3
[0047] A preparation method of alumina porous ceramics with high closed porosity, comprising the steps of:
[0048] ①Raw material treatment: Ball mill the raw materials and pass through a 325-mesh sieve, and the particle size of all raw materials is controlled at 45-60 μm;
[0049] ② Raw material ratio: the mass percentage of each raw material is: alumina 60%, quartz 20%, Suzhou soil 20%, CMC 0.5% (additional), gum arabic 0.7% (additional), the amount of pore-forming agent added is 1.2% g / (100g material)
[0050] ③ Mixing of raw materials: Mix alumina, quartz, and Suzhou soil by ball milling for 2 hours according to a certain ratio, and mark it as powder A; the quality of tap water accounts for 40% of the total mass of the slurry, and weigh the corresponding quality of CMC and Arabica according to the ratio of raw materials. The gum was dissolved in tap water for later use, and marked as solution B; powder A and solution B were mixed for 30 minutes to obtain a slurry. Add th...
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