Further into Phosphorescence

After presenting what design boards I had done to the class before Christmas there were some things I needed to check. An issue that came up was to do with the phosphorescence and whether this is dangerous to children. I did some further research and found the company RTP which was very useful to me.

RTP Company offers various phosphorescent (glow-in-the-dark) masterbatches and compounds for all major polymers. For the best glow-in-the-dark performance, RTP Company offers compounds which are based on strontium oxide aluminate chemistry. They are drastically different and better performing than conventional phosphorescent pigments.

Features that the compound would give:

• Afterglow period up to ten times longer than 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

• Increase in luminescence and afterglow with longer activation time

• Excellent weather and light fastness

• Free of hazardous substances

• Colour

RTP Company offers phosphorescent compounds in a wide variety of colors. These products are made from non-organic materials, are chemically inert and environmentally safe. Glow time varies up to 12 hours depending on the environment and application.

Features

• Absorbs and re-emits light

• Glow up to 12 hours

• Different Colors (lighted and afterglow)

• Violet

• White

• Yellow

• Green

• Blue

• Red

• Orange

• Tested durability, up to 10 years (dishwasher safe)

• Can be incorporated into most polymers

• UV stable