long-Last afterglow time glow in the dark powder LB-Y bright yellow 30-45um
Photoluminescence pigment is a new-type of environmentally friendly alkaline earth aluminate pigment with the characters of non-toxic, innocuous ,non-radioactive. By absorbing ultraviolat light and other visible light, it can release the energy in the form of visible light for over 10 hours in the dark and features duty-cycle operation . The luminosity and after-glow time are over 30 times compared with the traditional ZnS products.
Product brief
Our photoluminescent pigment(powder)is a new type of long after-glow luminescent material. It can glow in the dark place automatically after absorbing varieties of visible light
The whole process of absorbing -emitting can be repeated endless
Appearance color
Glow color
Glow time
light green
Yellow green
>12h
light green
Blue green
10h
milky white
white
5h
light lemon
Lemon yellow
5h
light yellow
Yellow
5h
light fresh green
green
5h
light blue
Blue
10h
light grass green
Grass green
5h
Our Services
Application:
Mainly use for paints, Ink, plastic, glass, porcelain, printing paste , fiber, Artworks, landscape, Safety escape system to activate the emitting functions of the agents.
Application notes: The normal photoluminescent pigment are less soluble in water and decomposed in acid, so they can not be applied in water-base. Except water-proof series pigment. Mix pigment well before using in terms of its gravity Metal material influence luminescent pigment, so prevent pigment from touching metal material direct
FAQ
What is photoluminescence? photoluminescent materials (commonly called “glow-in-the-dark”) has the ability to absorb light (sunlight, fluorescent, incandescent,etc) and then to emit light. When ambient darkness occurs, it becomes highly visible, lasting at least 8 hours. Our best products could last more than 20 hours.
Upon removal of the light source, the stored light is gradually released, the strongest glow is produced during the first 30 minutes of darkness, the most critical period following a power failure or other emergency. Then it fades over a period of time, when there is light again, it stores energy again. So the photoluminescence process is circulatory.
The bases of most photoluminescent products are photoluminescent pigments that can be incorporated into coat, paint, ink, fabric, ceramic glaze or porcelain enamel, glass, flexible and rigid molded plastics. Typical products include self adhesive flexible vinyl tapes, rigid PVC marker strips, and silk-screened signage. Photoluminescent fabric, enamel-coated sheet metal and ceramic tiles are also available.
What is traditional Zinc Sulphide pigment? Some of the first phosphors to be developed were inorganic zinc sulphide compounds. (German submarine commanders during World War I reportedly rubbed these compounds on their hands to read documents during blackout conditions.) These phosphors typically absorb energy from deep blue and ultraviolet light and emit it as yellow-green light.This is useful in that the peak spectral distribution of the emitted light roughly coincides with the peak spectral sensitivity of the human visual system under isotopic (low-level) lighting conditions (which is around 510 nanometers).
Zinc sulphide occurs in crystalline form, but is not photoluminescent by itself. This requires the addition of activator ions to the crystals, such as copper atoms. These ions absorb the excitation energy of the ultraviolet or visible light and later release it as visible light.
The copper-activated zinc sulphide crystals(identified with the chemical symbol ZnS:Cu) are typically ground into a fine powder with a grain size of 3 to 15 micrometers to avoid light trapping and light piping effects. This must be done carefully however, because the crystals can darken (or gray) if subjected to heavy pressure or excessive mechanical stress, due to disruption of the crystalline structure.
How efficient is the fire retardant of the firefighting security mark? Is it conforming to the regulations ofthe fire fighting department? 1. The products are tested to have conformed to the regulations of the firefighting department outright. 2. The firefighting security mark has been certified to be fire retardant. The oxygen index is above 32, which is compliant with the fire retardant standard.
In what types of places do the spontaneous security marks perform the best if deployed? In general, the spontaneous security marks are best suited for the well-lit sites of large space such as: the shopping centers/supermarkets of above 1500 square meters in size, high-rise buildings, underground complexes, etc.
Are the spontaneous security marks usable for the sites that are not well-lit? The products can emit light for 10 hours in a row after only about 10-20 minutes of absorption of light. But theusability of the products is subject to the surroundings where the products are deployed such as illuminant source, light intensity, etc.
What if the unexpected problems occur after the products are sold? 1. The quality inspection standards are applied in determining the nature of the problems after the products are sold. In the event that the problems are proved to be the defects in quality, the products will be refunded or renewed pursuant to the obligations of the sales contracts between the two parties. 2. Ever since 1992, the products with the worth of billions of dollars have been sold home and abroad without any occurrence of defected products or disputes arising out of the defects in quality.
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