What is phosphorescent pigment?
What is phosphorescent pigment?
Phosphorescent pigments are manufactured from phosphors. A good example is copper-activated zinc sulfide, called ‘GS phosphor’. Copper is added to zinc sulphide crystals, enabling the crystals to adsorb light and slowly emit it. This type of pigment is often used in the manufacture of novelty toys.
Is strontium aluminate safe?
Strontium aluminate doped with europium is non toxic. Strontium aluminate phosphors are harmless as defined by the Laws of Chemical Substances. Our product specifically was deigned harmless under the OSHA (Occupational Safety and Health Administration) Hazard Communication Standard 29 CFR 1900.1200[4].
What is strontium aluminate used for?
It can be used as a cement for refractory concrete for temperatures up to 2000 °C as well as for radiation shielding. The use of strontium aluminate cements is limited by the availability of the raw materials.
What is strontium aluminate powder?
Strontium aluminate powder activated by europium and dysprosium, is a newer material with the highest brightness and significantly longer glow. It is about 10 times better than the mix of zinc sulfide and calcium sulfide. Techno Glow Products offers the brightest glow in the dark powder on the market.
What is fluorescence and phosphorescence?
Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. Phosphorescence is a specific type of photoluminescence related to fluorescence. Unlike fluorescence, a phosphorescent material does not immediately re-emit the radiation it absorbs.
What is an example of phosphorescence?
Everyday examples of phosphorescent materials are the glow-in-the-dark toys, stickers, paint, wristwatch and clock dials that glow after being charged with a bright light such as in any normal reading or room light.
How is strontium aluminate made?
A long-afterglow luminescent coating containing SrAl2O4:Eu2+, Dy3+ is prepared by the plasma electrolytic oxidation on the surface of commercial aluminum alloy Al6082. During the electrical discharges in this process, the strontium aluminate is formed in a similar way to the solid-state reaction method.
How do you take strontium aluminate?
Using glow powder made from strontium aluminate, you simply choose the paint (or any medium for that matter) you want to use, mix the powder in and apply. DONE!
What is watch Lume made of?
Formerly, lume consisted mostly of radium; however, radium is radioactive and has been mostly replaced on new watches by less bright, but less toxic compounds. Common pigments used in lume include the phosphorescent pigments zinc sulfide and strontium aluminate.
Why is strontium used in glow-in-the-dark paint?
Glow-in-the-dark paints usually contain either zinc sulfide or strontium aluminate. Both of these give the paint phosphorescent qualities; this means it absorbs light, then slowly re-emits it over a period of time. Finally, strontium can also be used as a source of electricity.
What do I mix glow powder with?
Mix Core Glow powder with clear resins, epoxies, paints, and lacquers to create your own glow designs. You can mix the powder directly into the medium or dust it over top. Core Glow powder is composed of 100% strontium aluminate crystals. Choose your medium carefully to avoid the decomposition of the crystal structure.
What is glow-in-the-dark material?
To make a glow-in-the-dark toy, what you want is a phosphor that is energized by normal light and that has a very long persistence. Two phosphors that have these properties are Zinc Sulfide and Strontium Aluminate. The phosphor is mixed into a plastic and molded to make most glow-in-the-dark stuff.
Which is the best strontium aluminate glow powder?
Strontium aluminate glow powders are doped with europium and dysprosium for the ultimate glow. Was: ULTRA GLOW Green Glow in the Dark Powder The brightest and best glow powder for a medium particle size pigment! Our 50 micron green glow in the dark powder is an ultra-premium glow in the dark pigment.
What is the wavelength of strontium aluminate blue?
Phosphor. The wavelength for its green formulation is 520 nm, its aqua, or blue-green, version emits at 505 nm, and the blue one emits at 490 nm. Strontium aluminate can be formulated to phosphoresce at longer (yellow to red) wavelengths as well, though such emission is often dimmer than that of more common phosphorescence at shorter wavelengths.
How is strontium aluminate used as a structural material?
Strontium aluminate cement can be used as refractory structural material. It can be prepared by sintering of a blend of strontium oxide or strontium carbonate with alumina in a roughly equimolar ratio at about 1500 °C.
What kind of phosphorescence does strontium aluminate produce?
Strontium aluminate can be formulated to phosphoresce at longer (yellow to red) wavelengths as well, though such emission is often dimmer than that of more common phosphorescence at shorter wavelengths. 19. 4 is important as a persistently luminescent phosphor for industrial applications.
