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Photo Luminescent Powder Introduction

Photo luminescent powder also called pigment is a new type of environmentally friendly alkaline earth aluminate pigment that is non-toxic and non-radioactive. Pigment particles are charged (excited) by most any visible light or ultraviolet light. Photo luminescent pigments then release energy in the form of visible light (glow in the dark) for 10 to as much as 24 hours. Photo luminescent pigments provide a duty-cycle operation with a very high ratio of glow time to charging time required. The glow intensity (luminosity) and after-glow time are over 30 times greater than traditional ZnS (zinc sulfide) or commonly sold retail store products.

The Techno Glow series includes photo luminescent pigment and paint. We have the best luminous powder and paint lines in the United States and throughout the world. Techno Glow can supply pigments with the full range colors and specifications. Our rigorous quality control system ensures that our products have highly stable characteristic and quality. We welcome customized orders manufactured to client specifications.



Techno Glow Powder Characteristics

  • Safe for normal uses as it contains no radioactive or toxic materials.
  • Long glow time. Compared with previous photo storage materials, it has up to 50 times longer emission (glow) time.
  • High initial brilliance. Initial luminance of up to 40,000 mcd/m2.
  • High durability. Long shelf life if the crystalline structure is not damaged.
  • Outdoor usage. Suitable for outdoor usage as it does not suffer luminance reduction even when placed under a 300-watt high-pressure mercury lamp for 1000 hours.
  • Stable Chemical Reaction. Not-encapsulated powder is stable as it is resistant to most anhydrous chemicals, both organic and inorganic. However, it will decompose into metal oxide and lose its luminance when brought into contact with water. Waterproof powder should be used for high water content mediums such as kids water paint. Most resin, epoxy, silicone and acrylic paints can be used with our not-encapsulated pigment and brighter pigment.   
  • Temperature Resistance:
    • High Temperatures. The performance and brilliance remain stable under temperature of nearly 1100 degrees Fahrenheit (600).
    • No decrease in performance even when tested at temperatures of -40 degrees Fahrenheit (-40). High durability.
  • Techno Glow products meet various photo luminescent standards and requirements, including:
    • Glow in the dark/UV pigments are a non-hazardous substance under United States OSHA Standard 29 CFR 1910.1200.
    • Glow in the dark/UV pigments meet and exceed compliance (2008-9 testing) with ASTM F963-03 (Standard Consumer Safety Specification on Toy Safety), Section 4.3.5 for heavy metals content, and EN71: Part 3: 1994, amendment A1 2000 for toxic elements content.

Frequently Asked Questions

What is Photo luminescence?

Photo luminescent 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 from a few hours to several days days depending on the quality and color.

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 photo luminescence process is circulatory.

The bases of most photo luminescent products are photo luminescent 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. Photo luminescent fabric, enamel-coated sheet metal and ceramic tiles are also available.

How bright are these glow products?

Many manufacturers refer to the extinction time of their products, which is defined as the time required for the afterglow to diminish to one masb (0.032 mcd/m2, or about 100 times the limit of human perception). In practice, this is very difficult to see unless your eyes are fully dark-adapted and you are in a completely dark environment.

For practical purposes, luminances of one to two millicandela’s per square meter are more appropriate limits for life safety applications, and even this assumes a smoke-free environment. Thus, zinc sulphide products are useful for perhaps 30 to 45 minutes after their excitation source has been extinguished. The afterglow of strontium aluminate products, on the other hand, can be visible for several days or more. All out Techno Glow powder is strontium aluminate based.

At the other end of the time scale, strontium aluminate products can provide surprising amounts of initial afterglow. For example, a four-inch square of material held a few inches away from a magazine page can provide enough light to read by, at least for the first minute or so. In addition, micro prismatic retro reflectors and other brightness enhancing techniques can increase the materials luminance by several times.

Can Photo luminescent products replace traditional emergency lighting? 

Light lead photo luminescent materials were originally designed to complement existing emergency lighting systems but continuous improvements in luminance performance mean that in certain circumstances high quality photo luminescent products can replace emergency lighting. They can be sited at waist or skirting level so they can still function if the ceiling lights become obscured by smoke. Similarly, life saving appliances and firefighting equipment become more visible and are easily located in an emergency. Some emergency lighting can take up to 15 seconds to activate. In these instances, photoluminesce products will light up immediately.

How do the materials work? 

Techno Glow photo luminescent materials contain purpose designed inorganic phosphor compounds that are energized in seconds by the ultra violet and blue light wavelength energy that is present in nearly all light sources. This high-energy source is converted into a lower energy source of light. The lower energy light source is yellow-green, the color most readily perceived by the human eye and as specified by safety signs standards. Techno Glow photo luminescent materials are non-radioactive and non-toxic and provide a strong light source. They are also self-extinguishing, so they carry on working when they are most needed.

Photo luminescent materials differ from reflective materials, which amplify and increase relative brightness when light is applied. Fluorescent materials are quite different from photo luminescent materials. Fluorescent materials (such as the 3M fluorescent work zone film or a "hot pink" tag) actually serve to borrow nearby light energy in nearby wavelengths and concentrate the amount of light returning to the viewer in a certain (for example, day-glow orange) wavelength. Fluorescent films are especially useful in dawn and dusk viewing times, when they appear particularly bright. Photo luminescent materials require prior exposure to a light source in order to glow in the dark.

Is it environmentally friendly? 

Photo luminescent materials are non-toxic, non-radioactive and contain no phosphorus or lead, or any other hazardous element or chemical.

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