NH-6083/NH-6685 are saturated carboxyl polyester resins for low gloss polyester/primid powder coatings by one shot estrusion.
Basic features:
-Low gloss film
-Excellent mechanical properties
-Good leveling
-Good weathering resistance
Specifications:
NH-6083 |
NH-6685 |
|
Appearance |
pale yellow flake |
pale yellow flake |
Color(50%DMF) |
<=3 |
<=3 |
Acid number(mgKOH/g) |
80~90 |
19~24 |
Softening point(℃) |
98~118 |
100~110 |
Glass transition temp(℃) |
~58 |
~58 |
Melting viscosity(200℃,cone/plate,mPa·s) |
3300±800 |
5600±800 |
Reactivity at 180℃(s,XL-552) |
60±30 |
250±50 |
Recommend Formulation:
NH-6083 |
NH-6685 |
XL-552 |
Filler&Pigment |
Leveling agent |
Benzoin |
270 |
270 |
43 |
406 |
8 |
3 |
Extrusion Condition:Two-screw estruder
Zone Ⅰ |
90~110℃ |
ZoneⅡ |
110~120℃ |
Speed of revolution |
500~1200rpm |
Fineness of powder |
<100μm |
Application Condition:
Electrostatic spraying with |
40~70KV |
Coating film thickness |
50~80μm |
Degreased cold-rolled steel |
0.5mm |
Curing Requirement:180℃*10min
Film Properties:
Gloss(60°) |
8%~14% |
Bending(φ2mm) |
pass |
Adhesive(1mm,grade) |
0 |
Pencil hardness |
>=1H |
Direct Impact Resistance |
pass 50kg·cm |
Packaging:PE bags, N.W. 25KG±0.1KG / bag