The larger the particle size, the better the glowing effect. But the excessively large particle size will affect the flatness of the luminescent paint film, and the glowing effect will not as uneven as the ultra-fine particle size luminous powder.
At this point, you can choose according to your specific painting location needs. Therefore, in summary, combining various factors, the luminous time of the glow in the dark paint with excellent performance can exceed twelve hours. Of course, this is for the industry standard; the so-called luminescence describes that the brightness value is higher than 0. But human eyes have different perceptions of brightness, so there is no fixed conclusion. For a relatively flat surface with a large area, and the effect of the paint film is required to be uniform, a paint spray gun is needed for the spray operation.
For small surface irregular surfaces, you can choose to brush or roller. The relative effect of roller coating is more uniform. The floor paint needs to add a curing agent. It is recommended to apply a layer of closed primer. If the color of the base is dark, you can apply a layer of white primer on the base to enhance the luminous effect of the glow in the dark paint.
Unopened glow in the dark paint may last for 3 to 5 years. On a wall, it may radiate luminously for up to years, or even 12 if protected with a clear sealer. Fluorescent paint will glow as long as a black light shines on it, while phosphorescent glows after dark for 3 to 4 hours or more.
Is the glow powder safe? Yes the glow powder is non-toxic and non-radioactive. As with any powder substance including flour or plaster you will not want to breathe it for long periods of time. For home use these pigments are really safe. Dibutyl phthalate has been reported to cause anaphylaxis and even death when ingested in large quantities, but the quantities in glow sticks are pretty minimal.
There is no problem if the glow stick is swallowed whole, which seems like quite a feat. Almost all glow in the dark toys is made from non-hazardous materials, which makes them safe to use. The radioactive glowing compounds used ionizing radiation to cause the glow. Promethium emits only beta particles, and at a lower energy than radium, so it's generally considered much safer; it also doesn't cause phosphors to break down nearly as quickly.
Seiko is one manufacturer that used promethium as an excitant; the half-life of promethium is only 2. Tritium, like promethium, is a low energy beta emitter; unlike promethium it has a much longer half-life — Tritium is a radioactive form of hydrogen, and tritium gas-filled fluorescent tubes are used not only in watches, but also on everything from cockpit instruments to gunsights.
Two of the best known users of tritium gas tubes for watch dials are Ball and Luminox. Tritium paint for watch dials and hands will lose its ability to photoluminesce over time, although as with promethium, degradation of the phosphor will take place more slowly, as tritium is a much weaker radiation source.
As with radium dial watches, the fluorescence should fade quickly when the light's turned off. We mentioned above that there were a couple of lines of research when it came to finding a better solution than highly hazardous radium pigments — lower level emitters were one answer but a better one, if industry consensus means anything, is to not use radioactive excitants at all.
To get away with this, you need a phosphor that will glow enthusiastically for hours after exposure to light — something that will act as a sort of "light bank," emitting stored energy in a measured fashion. Enter Luminova. Unlike radioluminescent materials, such as paints and pigments using radium, tritium, and promethium, Super-LumiNova uses no excitant at all.
Instead, it incorporates a material known as strontium aluminate, which is an extremely efficient phosphor that once charged, will glow very brightly initially, and with diminishing intensity for several hours thereafter.
For strontium aluminate to be an effective phosphor, it must be combined with europium, a non-toxic, non-radioactive chemical element. Strontium aluminate is a much more efficient phosphor than zinc sulfide — it's about ten times as bright and glows about ten times longer and the color can vary between various shades of green and blue, with blue supposedly producing the longest glow time, and green offering better brightness.
The disadvantage of Super-LumiNova in comparison to radioluminescent material is of course that its brightness fades until it's recharged by another exposure to light. Personally I've found that with most of the sports watches I've owned over the years, if my eye's dark-adapted the watch remains legible, with some difficulty, through most of the night.
Still, it is a disadvantage of the material relative to the always-on glow of radioluminescent solutions which is part of the appeal of Luminox and Ball. Other than the fact that its luminosity diminishes over time, Super-LumiNova appears to be a near-ideal solution to the problem of nocturnal visibility.
Strontium aluminate seems to be a highly stable phosphor, and Super-LumiNova dials, at least thus far, appear to not suffer from the gradual phosphor degradation characteristic of radioluminescent materials. It is adversely affected by moisture, so a high humidity climate might cause issues, but in general, Super-LumiNova and other strontium aluminate-based pigments seem likely to be with us for a long time. Does not contain any radioactive elements, harmful heavy metal elements, chemical substances, non-toxic, harmless, non-combustible, non-explosive, and safe for use in all walks of life.
Extremely stable physical and chemical properties, strong environmental adaptability, and extremely long service life. High luminous brightness and long afterglow time, which is superior to the past light storage materials sulfide series ; its luminous brightness and afterglow time are more than ten times higher.
Good resistance to high and low temperatures. Excellent weather resistance and light resistance. High durability. The luminous performance of this luminescent material is related to the stable crystal structure, which can be permanently maintained without the crystal structure being damaged. Avoid contact with water, keep it sealed as much as possible; will absorb moisture in the air, make the luminous powder dark, non-luminous, and agglomerated.
Avoid contact with metal will affect the unsaturated state of luminous powder and affect luminescence. The waterproof luminous powder is a common rare earth long-lasting long-glow luminous powder that we use daily. You can directly put it into the water without affecting its luminescence. It is different from ordinary luminous powder in that ordinary luminous powder will lose its glowing effect if you place in water for a long time. Generally, oily products rarely use this waterproof glow powder.
In real life, people use the luminous properties of glow in the dark pigment for a long time to make weak lighting sources.
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