MaxLume
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MaxLume is a class of newly developed phosphorescent (glow-in-the-dark) pigments which are based on Strontium Oxide Aluminate Chemistry. They are drastically different from conventional phosphorescent pigments which are either based on Zinc Sulfide or on radioisotopes for their self-luminous properties.
Features
· Afterglow period of ten times current ZnS based phosphorescent pigments.
· Activation by a wide wavelength band (200-450 nm) but best results are obtained with an activation energy under 350 nm;
· Initial afterglow brightness of up to ten times that of conventional phosphorescent pigments;
· Increase in luminescence and afterglow with longer activation time;
· Excellent weather and light fastness;
· Free of hazardous and radioactive substances
Note: A little bit of this powder does a very long way! All you need is very small amount applied to a surface.
MaxLume was originally developed to satisfy the current and future needs of the clock, watch and the instrument dial industries, but soon it was found out that like many other new products, the application possibilities are almost limitless.
Applications include:
· Clock & Watch dials
· Electronic instrument dial pads
· Home appliances
· Lighting apparatus and switches;
· Exit sign boards
· Emergency signage and low level lighting escape systems;
· Aircraft and automobile dials and Instrument panels;
· Firemen's equipment
· Military applications
· Outdoor path marking
· Camping equipment
· Textile printing and textile fibers
· Writing & printing inks
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| Chemical Identity | Strontium Oxide | ZnS:Cu |
| Body Color | Light Yellowish Green | Yellowish Green |
| Avg Particle Size | 1.5 - 40um | 20-40um |
| Excitation by | 200-450nm | 200-450nm |
| Emission at (peak) | 520nm | 530nm |
| Afterglow Brightness1 | » 300mcd/m2 | 20-30mcd/m2 |
| Afterglow Extinction2 | >2,000 min | 200min. |
| Excitation Time3 | » 30 min. | 4 min. |
| Light Fastness4 | > 1,000 hours | 10-24 hours |
| Chemical Stability | Excellent (Except Water) | Poor to Good |
| Specific Gravity5 | 3.6 | 4.1 |
(1) Brightness after 10 min., excitation with a D65 illuminant for 4 min. at 200 lux.
(2) Time span necessary for afterglow brightness to diminish to .32 mcd/m2 (100 times the human eye perception limit)
(3) Time required for saturation with standard D65 illuminant at 200 lux.
(4) Time required for initial afterglow to drop by 20% after irridation with 300W high pressure mercury lamp (accelerated light fastness test)
(5) In powder form