User talk:Glowpowder

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.

About UV fluorescent pigment
The UV fluorescent pigment usually use for make anti counterfeit printing ink, then use for security purpose. Also can be use for drawing for entertainment place, the design can show under the UV light.

The UV fluorescent pigment include two kinds, one is organic UV fluorescent pigment, another one is inorganic UV fluorescent pigment. The UV fluorescent pigment also include long wave type (excitated by 365nm wavelength ) and short wave type (excitated by 254nm wavelength ).

For use in anti counterfeit purpose, long wave security technology is widely use for bill, currency anti counterfeit , The differentiate instrument is popularization. In marketplace or bank often use currency detector to identify. The short wave security technology need use specially instrument to identify, so have more strong anti counterfeit performance.

About the inorganic UV fluorescent pigment: 1. Their color is vivid, and have good envelop ability, can do not need to add opacifier. 2. The particle size is small. Easy to disperse. 3. Have good ability for endure hot,  Can endure about 600 C degree. Centigrade. 4. Have good solvent resistance, resist acid, resist alkali, and steady. 5. Have not the color MIGRATION, Non toxic, Non pollute.

And When use inorganic UV fluorescent pigment into paint or ink, that is not dissolve in them, just is disperse in paint and ink. Can be use for oil base and water based paint. And should be use neutrality or slightly alkaline resin. The add ratio is around 10% to 20%. That is suitable for various type printing method, such as screen painting, photogravure plate printing, anastatic printing. The printing background suggest to use white or light color. And can be use mix with others dye or pigments.

About the organic UV fluorescent pigment: 1: The organic UV fluorescent pigment color is vivid, but have not ability for envelop , the ray penetrate ratio can over 90%. 2. Have good dissolve ability, can dissolve in various oil based solvent. 3. Belong to dyestuff series, should noted the color MIGRATION matter. 4. Resist temperature ability not very good, Can endure about 200C degree centigrade.