Method for preparing antifouling functional ceramic
A functional ceramics and antifouling technology, applied in the field of preparation of antifouling functional ceramics, can solve the problems of large porosity, difficult to remove, ceramic surface pollution, etc., and achieve the effects of simple preparation steps, good anti-fogging performance and low cost
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example 1
[0019] Weigh 400g of aluminum isopropoxide and dissolve it in 5L of absolute ethanol, and use an ultrasonic oscillator to oscillate and mix for 30 minutes at a power of 200W to obtain a precursor solution. Transfer the precursor solution to a water bath at 80°C, and then drop it into the precursor solution through a dropping funnel. Drop in 1 / 2 of the volume of nitric acid solution with a mass concentration of 40%, add dropwise while stirring, control the drop rate so that the dropwise addition is completed within 40 minutes, keep warm and hydrolyze for 2 hours, and then get the self-made aluminum sol; take ordinary daily-use ceramics and put them in Clean in an ultrasonic cleaner for 10 minutes and dry naturally. Dip the above self-made aluminum sol with a wool brush and apply it evenly on the washed ceramic surface in the same direction, put it in an oven to dry, repeat the above coating steps twice and dry; Move the aluminum sol-coated ceramics into a muffle furnace, heat up...
example 2
[0022] Weigh 450g of aluminum isopropoxide and dissolve it in 5L of absolute ethanol, and use an ultrasonic oscillator with a power of 250W to ultrasonically oscillate and mix for 35 minutes to obtain a precursor solution. Transfer the precursor solution to a water bath at 85°C, and then drop it into the precursor solution through a dropping funnel. Drop into 1 / 2 of the volume of nitric acid solution with a mass concentration of 40%, add dropwise while stirring, control the drop rate so that the dropwise addition is completed within 45 minutes, keep warm and hydrolyze for 2 hours, and then get the self-made aluminum sol; take ordinary daily-use ceramics and put them in Clean in an ultrasonic cleaner for 13 minutes and dry naturally. Dip the above-mentioned self-made aluminum sol with a wool brush and apply it evenly on the washed ceramic surface in the same direction, put it in an oven to dry, repeat the aforementioned coating steps twice and dry; Move the aluminum sol-coated c...
example 3
[0025]Weigh 500g of aluminum isopropoxide and dissolve it in 6L of absolute ethanol, and use an ultrasonic oscillator to oscillate and mix for 40 minutes with a power of 300W to obtain a precursor solution. Transfer the precursor solution to a 90°C water bath, and then drop it into the precursor solution through a dropping funnel. Drop into 1 / 2 of the volume of nitric acid solution with a mass concentration of 40%, and add dropwise while stirring. Clean in an ultrasonic cleaner for 15 minutes and dry naturally. Dip the above self-made aluminum sol with a wool brush and apply it evenly on the washed ceramic surface in the same direction, put it in an oven to dry, repeat the above coating steps 3 times and dry; Move the above alumina sol-coated ceramics into a muffle furnace, heat up to 900°C at a rate of 10°C / min, heat-preserve and calcinate for 3 hours, and then leave the furnace to obtain pretreated ceramics for later use; collect discarded sardine bones and pulverize them wit...
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