NH-3307 is a saturated carboxyl polyester resin for polyester/TGIC powder coating system at the ratio 93/7.
Basic features:
-Excellent leveling
-Good chemical resistance and mechanical properties
-High storage stability
-High weathering resistance
-Suitable to make high gloss powder coatings for aluminum profile
Specifications:
Appearance |
white or pale yellow transparent flakes |
Color(50%DMF) |
max:1 |
Acid number(mgKOH/g) |
30~35 |
Softening point(℃) |
103~113 |
Glass transition temp(℃) |
~67 |
Melting viscosity(200℃,cone/plate,mPa·s) |
5000±1000 |
Reactivity at 180℃(s,7% TGIC) |
230±30 |
Recommend Formulation:
NH-3307 |
TGIC |
Filler&Pigment |
Leveling |
Benzoin |
701 |
558 |
42 |
383 |
8 |
4 |
5 |
Extrusion Condition:Two-screw estruder
Zone Ⅰ |
90~110℃ |
ZoneⅡ |
110~120℃ |
Speed of revolution |
500~1200rpm |
Fineness of powder |
<100μm |
Application Condition:
Film thickness |
50~100μm |
Electrostatic spraying with |
40~70KV |
Degreased cold-rolled steel |
0.5mm |
Curing Requirement:200℃*10min
Film Properties:
Gloss(60°) |
>=85% |
Gel time(180℃,sec) |
290~390 |
Horizontal flow:(180℃),mm |
25~28 |
Bending(φ1mm) |
pass |
Adhesive(1mm,grade) |
0 |
Pencil hardness |
>=1H |
Impact(50cm) |
pass |
Packaging:PE bags, N.W. 25KG±0.1KG / bag