Luminous materials at home glow in the dark dye

Material 

Luminous materials at home and abroad mainly ZnS, SrS and CaS made, glows green and yellow. SrS, CaS deliquescent material, to a wide range of applications difficult. So the market mainly ZnS luminous material as a substrate. Afterglow time, but it is only 1 to 3 hours, while the light (such as sunlight), Photoluminescent Ceramic‍ UV light and black perishable moist air, so that in many applications in the field is limited. Adding cobalt, copper activated ZnS luminous although of a long afterglow time, it was quenched with infrared phenomenon, electric lights (including more red) radiation, the afterglow quickly extinguished. 

4 craftsmanship editor 

I. Features: Unlike the luminous phosphors, which non-radioactive, light long short but luminous efficiency, low cost, colorful. 

Second, the equipment: electric furnace, crucible, ball mill, drying equipment. 

Third, the formula: 

Red luminous powder: 55 g of barium sulfate, 40 g of magnesium sulfate, lithium phosphate, 2 g, 3 g of copper nitrate 

Blue luminous: 63 g of calcium sulfide, sodium sulfate, 5 g, 5 g of potassium sulfate, strontium sulfate, 10 g, 6 g of sodium chloride, 1 g of silver nitrate, 10 g magnesium sulfate. 

Purple luminous powder: 63 g calcium sulfide, magnesium sulfide 26 grams, 10 grams sodium sulfide, strontium nitrate 1 g. 

Green luminous powder: 55 g calcium sulfide, Photoluminescent Gravel‍ potassium sulfide 1 g, 10 g sodium sulfide, barium nitrate 12 g, 13 g of indium nitrate. 

Yellow luminous powder: 55 g barium sulfide, magnesium sulfate 40 g, 2 g aluminum sulfide, potassium nitrate 3 g. 

Fourth, Crafts: after with a good raw material, the temperature on the crucible furnace heating, raw material in the pot, but also do not pan, mix the raw materials directly on the burning furnace, the temperature is 133 degrees, burning 50 minutes After hand-colored pick insufficiency impurities, and then placed in the cooked raw mill ground into fine powder and then soaked in water for precipitation to remove water, the sink in the powder on the oven dry. 

Fifth, use: put a colorless transparent plexiglass Two bananas dissolved in water. After adding 72 hours to the amount of luminous paint on watches, clocks, Photoluminescent pigment‍ instruments and crafts.