1. For the temperature bear performance of the photoluminescent pigments, the blue green usually can bear about 1050 C, the yellow green bear about 1000 C, the sky blue bear about 900 C, and others colours can bear about 800 C.
For use in glass by melt technology, the pigments is protect from direct fire.
2. You can use the YG-K or BG-K for glass. Because the larger particle size is suitable for normal luminescent glass products.
3. For the method, one method is when glass melt , use the pigments stick on the surface of the glass. Another method is for make such as luminescent glass vase etc. , is make the luminescent glass oil firstly, then use the luminescent glass oil to make luminescent glass products.
4. For the ratio of use in plastic, it is better to not less than 15% for pigments with plastic, because if use too much luminescent pigments, will influence some property of the plastic.
How to make photoluminescent plastic
These are the guidelines for using Photoluminescent pigment in Plastic. You can use our photoluminescent plastic pellets or Master Batch instead saving you time and money. See how to use photoluminescent plastic granule or master batch for details.
1. You can mix photoluminescent pigment in with acrylic, polyester, polypropylene, epoxy, PVC, polyethylene (HDPE, LDPE etc) polymers.
2. You can extrude, mold, dip and cast this material.
3. Use less photoluminescent pigment than other ZnS:CU luminous pigments.
4. Keep the temperature low as possible while extruding.
5. Master Batches of photoluminescent material must be completely dried up before usage.
Master Batch Manufacturing
1. Clean the interior of the extruder before manufacturing with the plastic master batch.
2. Keep the resin and pigment dry before the extruding process is started.
3. It is recommended to use a machine with twin hoppers and a distributive screw design. Use one of the hoppers to feed the resin and additives and the second for the photoluminescent pigment. Doing so will decrease the abrasion to the extruder surfaces.
4. Do not stir for a long time because this might darken the pigment/resin.
5. Keep the processing temperature 10 degrees higher than a normal run of plastic.
6. Clean the extruder again by running clear resin through until clear resin can be seen coming out of the extruder.
7. Use ceramic, glass or hard metal containers because the photoluminescent pigment will react to heavy metals causing discoloration.
8. Mix the photoluminescent pigment with liquid paraffin. Ratio of the liquid paraffin to the plastic particle is 1 -1.5% of the plastic particle.
9. Using the white mine oil makes the photoluminescent pigment stick evenly with the plastic.
How much ratio of pigments should we take when make the luminescent products ?
This universal question has one answer. It is up to you. The amount of photoluminescent pigment to medium will depend on how much glow desired, cost effectiveness, type of application method etc. The Basic Guidelines dictate from 10% to 50% by weight. If you are producing a low cost item, then a lower percentage would work best for you. If you are screen printing shirts and want to make only one pass, a higher percentage would work better. Please also consider the particle size of the powder and the color of the surface to which the medium is going to be applied. Experimentation will be the best method of determining ratios after following the guidelines found on this paper.