Porous heat storing microwave absorbing material for microwave oven and preparation method of porous heat storing microwave absorbing material
A wave-absorbing material and microwave oven technology, applied in the field of daily necessities ceramics
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Embodiment 1
[0020] Embodiment 1: The composition of the porous heat storage wave-absorbing material for microwave ovens in this embodiment is: SiO 2 47wt%, Al 2 o 3 22wt%, Fe 2 o 3 11wt%, CaCO 3 5wt%, ZrO 2 5wt%, porosity 20%.
[0021] The preparation method of the porous heat-storage wave-absorbing material for microwave ovens in this example is as follows: mix the ingredients according to the ingredients of the porous heat-storage wave-absorber material for microwave ovens, pass through a 400-mesh sieve after ball milling, and then carry out aging, pressure molding, drying treatment and glazing treatment in sequence , and then according to the heating rate of 2°C / min, the temperature was raised to 800°C for 3 hours, and finally the temperature was raised to 1200°C for 15 hours; the mass ratio of ball milling material to water during ball milling was 1:1 , the ball milling time is 12 hours; the stale temperature is 20°C, the humidity is 70%, and the stale time is 48h; the mold...
Embodiment 2
[0022] Embodiment 2: The composition of the porous heat storage wave-absorbing material for microwave ovens in this embodiment is: SiO 2 40%, Al 2 o 3 20%, Fe 2 o 3 30%, CaCO 3 6%, ZrO 2 4%, and the porosity is 30%.
[0023] The preparation method of the porous heat-storage wave-absorbing material for microwave ovens in this example is as follows: mix the ingredients according to the ingredients of the porous heat-storage wave-absorber material for microwave ovens, pass through a 400-mesh sieve after ball milling, and then carry out aging, pressure molding, drying treatment and glazing treatment in sequence , and then according to the heating rate of 8°C / min, the temperature was raised to 900°C for 2 hours, and finally the temperature was raised to 1300°C for 13 hours; the mass ratio of ball milling material to water was 3:1 during ball milling , the ball milling time is 13 hours; the stale temperature is 25°C, the humidity is 50%, and the stale time is 40h; the mold...
Embodiment 3
[0024] Embodiment 3: The composition of the porous heat-storage wave-absorbing material for microwave ovens in this embodiment is: SiO 2 35%, Al 2 o 3 40%, Fe 2 o 3 10%, CaCO 3 5%, ZrO 2 10%, porosity 25%.
[0025] The preparation method of the porous heat-storage wave-absorbing material for microwave ovens in this example is as follows: mix the ingredients according to the ingredients of the porous heat-storage wave-absorber material for microwave ovens, pass through a 400-mesh sieve after ball milling, and then carry out aging, pressure molding, drying treatment and glazing treatment in sequence , and then according to the heating rate of 10°C / min, the temperature was raised to 1000°C for 1h, and finally the temperature was raised to 1400°C for 12h; the mass ratio of ball milling material to water during ball milling was 2:1 , the ball milling time is 15 hours; stale temperature is 30°C, humidity is 60%, and stale time is 8h; molding is by pressure molding, and th...
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