SP series photoluminescent pigment is alkaline earth silico-aluminate photoluminescent material, which is combined the character of high afterglow luminance for alkaline earth aluminate photoluminescent material and rich in color for alkaline earth silicate photoluminescent material. These products can glow more than 12 hours after absorbing various visible light or ultraviolet radiation. The photoluminescent pigment has excellent stability and weatherability. The features of SP series photoluminescent pigment are 220-550mcd/m2 in luminance andmore than 12 hours long afterglow time and rich in color, the physical properties are as tabled below:
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PRODUCTS
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SP series
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light green to yellow green
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Emitting color
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yellow green
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Composition
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MeO·xAl2O3·ySiO2：Eu (Me=Ca、Mg、Sr、Ba；x=0.5-2.0；y=0.01-0.5)
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Excitation wavelength（nm）
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200-450
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Emission wavelength peak（nm）
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520
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Medium Particle size（μm）⑴
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1-100
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Afterglow brightness（mcd/m2）⑵
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40-400
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Afterglow time
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≥10h
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Light resistance
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≥1000h
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Chemical stability
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Excellent, Slowly decomposed in water. (The product can be waterproof by further treatment)
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Temperature tolerance
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Luminescent brightness is weaken along with the elevated temperature and extended time during 250-600℃
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Allowable temperature
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≦250℃
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Density（g/cm3）
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3.6
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⑴The unit of particle size is μm. The particle size is expressed by Medium Particle size
⑵The unit of afterglow brightness is mcd/m2. All the tests are executed according to the standard of DIN67510, which is to detect afterglow brightness of the sample for 10 min excited by D65 standard light source illumination of 1000LX for 5 min.
Excitation and emission spectra of SP series
Download： photoluminescent material.pdf |
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