Novel vacuum degassing method for gelcasting ceramic slurry
A technology of gel injection molding and ceramic slurry, which is applied to clay products, other household utensils, household utensils, etc., can solve the problems of slurry bubbles not being eliminated, oxygen consumption, etc., to ensure smooth curing and operation the effect of time
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Embodiment 1
[0017] Commercially available TiO 2 As a raw material, it is prepared into a 50vol% slurry. Take 0.125g of phenothiazine, 0.345g of catechol, dissolve in 100ml of ethanol to make a polymerization inhibitor. Get 100ml slurry, add 0.14mmol ammonium persulfate, 2mmol N, N, N', N'-tetramethylethylenediamine under stirring condition. The slurry was solidified after being vacuumed and degassed for 10 minutes at an ambient temperature of 30°C. Get 100ml slurry again, add 0.14mmol ammonium persulfate, 2mmol N, N, N', N'-tetramethylethylenediamine and 100 μl inhibitor under stirring condition. After vacuuming and degassing at an ambient temperature of 30°C for 10 minutes, the fluidity of the slurry was good and the curing time after injection molding was basically unchanged.
Embodiment 2
[0019] Commercially available Al 2 o 3 As a raw material, it is prepared into a 55vol% slurry. Take 0.125g of phenothiazine, 0.345g of catechol, dissolve in 100ml of ethanol to make a polymerization inhibitor. Get 100ml slurry, add 0.25mmol potassium persulfate, 3mmol N, N, N', N'-tetramethylethylenediamine under stirring condition. The slurry was solidified after being vacuumed and degassed for 15 minutes at an ambient temperature of 30°C. Get 100ml slurry again, add 0.25mmol potassium persulfate, 3mmol N, N, N', N'-tetramethylethylenediamine and 200 μl inhibitor under stirring condition. After vacuuming and degassing at an ambient temperature of 30°C for 10 minutes, the fluidity of the slurry was good and the curing time after injection molding was basically unchanged.
Embodiment 3
[0021] Commercially available Al 2 o 3 As a raw material, it is prepared into a 55vol% slurry. Take 0.125g of phenothiazine, 0.345g of catechol, dissolve in 100ml of ethanol to make a polymerization inhibitor. Get 100ml slurry, add 0.25mmol hydrogen peroxide, 3mmol N, N, N', N'-tetramethylethylenediamine under stirring condition. The slurry was solidified after being vacuumed and degassed for 15 minutes at an ambient temperature of 30°C. Get 100ml slurry again, add 0.25mmol hydrogen peroxide, 3mmol N, N, N', N'-tetramethylethylenediamine and 200 μl inhibitor under stirring condition. After vacuuming and degassing at an ambient temperature of 30°C for 10 minutes, the fluidity of the slurry was good and the curing time after injection molding was basically unchanged.
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