APPLICATION OF PHOSPHORESCENT PIGMENTS TO PLASTICS
Phosphorescent pigment can be mixed with resins such as PE, PP, ABS, PVC, etc, and molded into variety of luminous plastic granules. Varieties of plastic products could be extruded, injected and blown molding. Mixed with photoluminescent pigment,
resins and additives can be molded into luminous films and imitation leathers. The expenditure of photoluminescent pigment ranges around 20-50 percent(wt). The lifetime of the plastic would not be shortened due to adding the pigment. When photoluminescent pigment is used, both additive with Pb and mould made of Cu can't be used, or they'll damage the pigment.
EXAMPLE 1:
| Compatibility of luminous plastic granule |
| Compatibility |
Content |
| Resin |
100 |
| Pigment |
25 |
| Wax |
suitable |
Luminous plastic physical characteristics index number |
|
Item -- Luminous plastic granule |
execute standard |
|
PPG-20 |
PEG-20 |
ABSG-20 |
|
| Density (g/cm3) |
1.055 |
1.099 |
1.190 |
GB1033-86(A) |
| Water and
volatile |
0.0184 |
0.142 |
0.351 |
QB1126-91 |
| Melt flowing
speed |
2.63 |
2.19 |
1.83 (g/10min) |
GB3682-83 (88) |
Brightness to luminous plastic granule |
| Plastic/time |
1 minute |
5 minutes |
10 minutes |
| PEG-20 |
0.769 |
0.218 |
0.115 |
| ABSG-20 |
0.510 |
0.246 |
0.076 |
| PPG-20 |
0.725 |
0.208 |
0.110 |
EXAMPLE 2:
Compatibility of extruding luminous plastic of ABS |
| Composition |
content |
| ABS |
100 |
| DLTP |
0.6 |
| ABSG-20 |
25 |
| Oxygen-resistant agent |
0.6 |
EXAMPLE 3:
Compatibility and technology of luminous polyethylene bottle by vacuumize molding |
| Composition |
content |
| LDPE |
70 |
| HDPE |
30 |
| LDPEG-20 |
25 |
| Wax |
suitable |
Technology process |
| Extruding melt's temperature |
170C |
| Compression ratio of screw |
3.2:1 |
| Air pressure of blowing |
5.4x10Pa |
| Molding temperature |
60 |
EXAMPLE 4:
Compatibility of luminous imitation leather made of suspensible PVC |
| Composition |
content |
| PVC(suspensible) |
100 |
| DOP |
50 |
| DBP |
40 |
| DOS |
10 |
| Epoxidized soyabean oil |
0.5 |
| Bast |
0.75 |
| Dibutyltin dilaurate |
1.0 |
| Phosphorescent pigment |
88 |
EXAMPLE 5:
Compatibility of luminous film |
| Composition |
content |
| PVC |
100 |
| DOP |
33 |
| Oilized sulfbenzeneate (T-50) |
10 |
| Octa epoxidized octadecanoate |
3 |
| Wax chloride |
10 |
| Benzene di-sio-oct phosphite |
0.5 |
| Bast |
1.0 |
| UV absorbent |
0.3 |
| Hst |
0.3 |
| Phosphorescent pigment |
68 |
|
