Reference Information about Long Persistence Phosphor Applications

This reference information is offered solely for your reference, consideration, and investigation. Stanford Materials Co. provides no warranties, either express or implied, and assumes no RESPONSIBILITY for the ACCURACY or COMPLETENESS of the information contained herein.

I. Applications of long persistence phosphor in paint and printing ink as a pigment.

Long persistence phosphor can be mixed with various transparent resins, such as acrylic acid resin, polyurethane, epoxy, amino, polyvinyl butyral, and polyamide resin, becoming luminous paint and printing ink. The recommended percentage of long persistence phosphor in paint is about 10 - 50%, however, 30 - 60% in printing ink. First, these resins should be dissolved with some appropriate solvents into a solution, then long persistence phosphor will be added into the solution. Some anti-precipitating agents, ridding foaming agents and dispersing agents also need to be added into the solution, well mixed into a uniform solution by using a high speed mixer. However it must be avoided to grind them with mechanic abrader in order to keep the property of the pigment. In the case to use sand abrader becomes necessary, the grinding time should be as short as possible.

1) Example A:

Ingredient wt%
Long persistence phosphor 35
Acrylic acid resin 38
Xylene 7
Butyl acetate 8
Ridding foaming agent appropriate
Dispersing agent Byk-300 1
Gas phase Silicon Oxide 0.8

Note: the formula is suitable for painting board and dial plate.

2) Example B:

Group one:

Ingredient wt%
Long persistence phosphor 50
Thermosetting acrylic acid resi 38
Gas phase Silicon Oxide 0.8
Dispersing agent Byk-300 1
Ridding foaming agent appropriate
Xylene 7

Group two:

Biuret: 5%

Note: The formula is suitable for dial plate.

3) Example C:

Group one:

Ingredient wt
Epoxy lacquer H889(6[D]) 90.5
Long persistence phosphor 8.0
Gas phase Silicon Oxide 1.0
Ridding foaming agent 0.5

Group two:

Ingredient wt
Ethylenediamine 18.6
Butyl alcohol 19
E44 40.8
Xylene 20.2

Note: This formula is suitable for top lacquer.

4) Example D:

Ingredient wt%
Polyvinyl butyral 8
Iso- propyl alcohol 40
n- Butyl alcohol 8
Ethanol absolute 10
DBP 2
Gas phase Silicon Oxide 2
Long persistence phosphor 30

Note: This formula is suitable for spray paint and decorating indoor wall.

5) Example E:

Group one:

Ingredient wt%
Long persistence phosphor 50
Thermosetting acrylic acid resin 33
Gas phase Silicon Oxide 0.8
Dispersing agent 1
Ridding foaming agent appropriate
DDP 7
Xylene 2

Group two:

Biuret: 5

Note: It will be the best to paint substrates with the white nitro-lacquer before applying the luminous paint.

II. Applications of long persistence phosphor in screen printing, printing, printing and dyeing starch.

1) Example A:

Group one:

Ingredient wt%
Foaming printing starch 60
Side starch 20
Fixing color agent 2
Long persistence phosphor 18

Note: After well-mixed, the mixture should be used as soon as possible in one-time.

2) Example B: Printing and dyeing:

Ingredient wt%
Side starch 50 g
Distilled water 1000 g
Softener 10 g
Long persistence phosphor 100 g

Note: To put cotton textiles into solution, paint and dye them evenly and uniformly; compress the water, dry; polish with hot gas and make them into finished form.

III. Applications of the Long persistence phosphor in luminous plastic granule for plastic molding

The long persistence phosphor can be mixed with various resins such as PE, PP, ABS, and PVS, becoming luminous plastic granule. Using these plastic granule, a variety of plastic products can be made by extrusion, injection molding, blowing and vacuum molding. Mixing with some appropriate auxiliaries and resins, they can also be made into luminous films and artificial leather. The quantity of the long persistence phosphor used can be in a range of 20 - 50 wt% of total weight, based on different applications. The plastic life span will not be affected by adding the pigment. However, please do not add any lead auxiliary into the mixture or operate in copper molds while making the final plastic. Otherwise the brightness of the plastic products will be damaged.

1) Example A:

Formula of luminous plastic granule :

Ingredient content
Resin 100
Long persistence phosphor 25
Paraffin appropriate

The physical index of the some luminous plastic granules;

luminous plastic granule PPG-20M PEG-20 ABSG-20
Density (g/cm3) 1.055 1.009 1.190
Moisture and other evaporants (%) 0.0184 0.142 0.351
Velocity of melted body (g/10min) 2.63 2.19 1.83

Luminous granule brightness (1000LX)

Granule Type Time
  1 min 5 min 10 min
LDPFG-2D 0.769 0.218 0.115
ABSG-2D 0.510 0.146 0.076
PPG-2D 0.725 0.208 0.110

2) Example B:

Formula of luminous ABS plastic products and molding conditions

Formula:

Ingredient Proportion (weight)
ABS resin 100
DLTP 0.6
Anti-oxidant 0.6
ABSG-2D luminous plastic granule 25

3) Example C:

Formula for blown-molded luminous polyethylene plastic bottle and forming conditions

Ingredient Proportion (weight)
LDPE 70
HDPE 30
LDPAEG-20 20
paraffin appropriate

Forming conditions:

Melting temp. of resin 170
Ratio of Screw bar 3.2 : 1
Blowing pressure 5.4105 Pa
Molding temperature 60 °C

4) Example D:

The formula of artificial luminous leather by suspending.

Ingredient content
PVC(suspending) 100
DOP 50
DBP 40
DOS 10
Epoxy Soybean Oil 0.5
Barium Stearate 0.75
Dibutyltin dilaurate 1.0
Long persistence phosphor 88

5) Example E:

The formula of luminous films.

Ingredient content
PVC(suspending) 100
DOP 33
Petroleum sulfo phenylether (7-50) 10
Epoxy stearate octanether 3
Chloro paraffin 10
Phosphite phenyl bi-iso - octane ester 0.5
Barium Stearate 1.0
Tripiperazine UV 0.3
Stearate acid 0.3
Long persistence phosphor 68