Tuesday, October 2, 2007
Thursday, July 19, 2007
NRC Review on Photoluminescent Materials
NRC's Literature Review on Photoluminescent Material(mainly Zinc Sulphite based) Used as a Safety Wayguidance System
http://irc.nrc-cnrc.gc.ca/pubs/rr/rr214/rr214.pdf
http://irc.nrc-cnrc.gc.ca/pubs/rr/rr214/rr214.pdf
Saturday, July 14, 2007
NRC's Study for Photoluminescent material
NRC (National Research Council's Institute ) is conducting a study for the application of photoluminescent material. Details are in http://irc.web-t.cisti.nrc.ca/newsletter/v4no4/emergency_e.html.
Friday, March 23, 2007
Photoluminescent&Reflective(PL&R) Belt
PL&R Belt has two functions, photoluminescent and reflective. It is suitable for safety products manufacturing, particularly for safety vest manufacturing. Besides reflecting light, it can emit light in dark(no electricity needed). The integrated functions make the safety vest being highly visible under almost all conditions.
Sunday, March 18, 2007
Photoluminescent pigment
The products do not contain any radioactive elements and can be evenly disoensed as an additive into coating, ink, paint, plastics, cereal, glass, fiber.
The pigment shows its natural color in bright places and emits different colors of lights in darkness.
Saturday, March 17, 2007
Wednesday, February 21, 2007
Wednesday, February 7, 2007
Application of photoluminescent materials
Photoluminescent material is excellent for safety sinage manufacturing. It is highly visible in case of power failure, can provide good indication for personnel evacuation, even under fume.
In 911 terrorism attacks in 2001, the photoluminescent materials, which were widely installed in the World Trade Centers, played a vital role in evacuating nearly 18,000 people out of the building.
So, one component of New York Local Law 26 or 2004 mandates the retroactive installation of photoluminescent signs and markings in high rise office buildings on or before July 1, 2006, and requires that the Commissioner of Buildings adopt a reference standard establishing the technical standards for the installation and placement of the standards on before January 1, 2006.
Photoluminescent pigments can be dispensed 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.
In 911 terrorism attacks in 2001, the photoluminescent materials, which were widely installed in the World Trade Centers, played a vital role in evacuating nearly 18,000 people out of the building.
So, one component of New York Local Law 26 or 2004 mandates the retroactive installation of photoluminescent signs and markings in high rise office buildings on or before July 1, 2006, and requires that the Commissioner of Buildings adopt a reference standard establishing the technical standards for the installation and placement of the standards on before January 1, 2006.
Photoluminescent pigments can be dispensed 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.
Tuesday, February 6, 2007
What is photoluminescence?
The photoluminescent (glow-in-the-dark)materials introduced in this Blog are Strontium Aluminate based material. . Up to today, it is the best afterglow material in terms of the brightness and the glowing time and the economics. It is safe, nontoxic, free of radioactivity.
It has the ability to absorb light (sunlight, fluorescent, incandescent,etc) and then to emit light. When ambient darkness occurs, it becomes highly visible, lasts at least 8 hours. Our best products can last more than 20 hours.When the ambient light is off, the stored light is gradually released. The strongest glow is released during the first 30 minutes in darkness, which is the most critical period after a power failure in an emergency. Normally, the brightness lasts over 10 hours and fades over a period. when the light is recovered, it stores light again. So the photoluminescence process is recyclable.
The bases of most photoluminescent products are photoluminescent pigments that can be dispensed 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.
What is traditional afterglow material?
1. ZnS:Cu pigment
Some of the first phosphors to be developed were inorganic zinc sulphide compounds. 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.
The application of ZnS:Cu pigment is limited because the short glowing time and unstable light properties.
2. Radium afterglow material
The discovery of Radium created the history of long afterglow material,but its radioactivity kept itself away from the application.
It has the ability to absorb light (sunlight, fluorescent, incandescent,etc) and then to emit light. When ambient darkness occurs, it becomes highly visible, lasts at least 8 hours. Our best products can last more than 20 hours.When the ambient light is off, the stored light is gradually released. The strongest glow is released during the first 30 minutes in darkness, which is the most critical period after a power failure in an emergency. Normally, the brightness lasts over 10 hours and fades over a period. when the light is recovered, it stores light again. So the photoluminescence process is recyclable.
The bases of most photoluminescent products are photoluminescent pigments that can be dispensed 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.
What is traditional afterglow material?
1. ZnS:Cu pigment
Some of the first phosphors to be developed were inorganic zinc sulphide compounds. 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.
The application of ZnS:Cu pigment is limited because the short glowing time and unstable light properties.
2. Radium afterglow material
The discovery of Radium created the history of long afterglow material,but its radioactivity kept itself away from the application.
Saturday, February 3, 2007
news for photoluminescent material
STG Aerospace of the UK signed supply deals with both British Airways and Air Canada for its SafTGlo photoluminescent cabin floorpath marking system. BA will install STG's ColorMatch product across its 757 fleet. AC's order was one of the largest single deals in STG's history, the company said, adding that 2006 marked a record sales year thanks in large part to the ColorMatch technology that allows airlines to install strips that match cabin decor.
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