Preparation method for improving light efficiency and stability of light-storing ceramics

A preparation method for improving light efficiency and stability of light-storing ceramics, comprising:

• step (1), weighing calcium nitrate and citric acid individually according to a mass ratio of 10:0.5˜1.5, and dissolving the weighed calcium nitrate and the weighed citric acid into an absolute ethanol to form a calcium ethanol solution;
• weighing tetra-n-butyl titanate, dissolving the weighed tetra-n-butyl titanate into another absolute ethanol, and adding glacial acetic acid dropwise under stirring to form a titanium precursor solution;
• and under stirring, adding the calcium ethanol solution into the titanium precursor solution, adding oleic acid dispersant and subsequently adding pure water and a light-storing powder, and continuously stirring 1˜4 hours (h) to obtain a light-storing powder-calcium titanate gel;
• step (2), heating the light-storing powder-calcium titanate gel obtained by the step (1) at a temperature of 80˜150° C. for 2˜8 h to obtain a light-storing powder xerogel coated with calcium titanate, crushing, and sieving with a sieve of 80˜200 meshes to obtain a sieved xerogel powder;
• step (3), placing a glass matrix material, the sieved xerogel powder and a second dispersant into a granulator, mechanically stirring and granulating after adding pure water, adding a plasticizer after the stirring of 4˜8 h, and continuously stirring for 1˜3 h to obtain a mixture;
• wherein a stirring speed of the stirring in the step (3) is 100˜300 radians per minute (rad/min);
• step (4), packing the mixture obtained by the step (3) into a mold, tableting by using an automatic tablet pressor, then demolding to obtain green compacts, and subsequently sending the green compacts to a kiln for drying and firing, wherein a shape of the mold is required by product requirements, pressure is 5˜40 megapascals (MPa), and pressure holding time is 5˜20 seconds(s);
• and
• step (5), heating of the kiln comprising:
• heating from room temperature to 200° C. with a rate of 2˜5° C./min, and then maintaining for 10˜30 min to ensure complete evaporation of water from the green compacts;
• then continuing to heat up to 400˜900° C. and maintaining for 60˜120 min;
• and subsequently cooling down to below 100° C. with the kiln and taking out a finished product to obtain light-storing ceramics.