NH-6582 is designed for 95:5 Primid XL 552 powder coating with outstanding mechanical properties and durable weatherability.
Applications:
NH-6582 is a saturated carboxyl polyester resin designed for 95:5 Primid XL 552 powder coating to be cured at 180 centigrade.
Basic features:
Excellent flowability
Outstanding mechanical properties
Good resistance to chemicals and fine anti-yellowing
Good resistance to sag
Pinhole free in thicker films
Durable weatherability
Specifications:
Appearance whiter or pale yellow flake
Color(50%DMF): max:2
Acid number(mgKOH/g): 31~35
Softening point 100~110 C
Glass transition temp. ~60
Melting viscosity(200 C, cone/plate, mPa·s): 5500±1000
Reactivity at 180 C (s, 5% XL552): 150±30
Recommend Formulation:
NH-6582/HAA
NH-6583 | Primid XL-552 | Filler and pigment | Leveling agent | Benzion |
589 | 31 | 372 | 6 | 3 |
Extrusion Condition:
Two-screw extruder
Zone I: 90~110 C Zone II: 110~120 C
Speed of revolution: 500~1200rpm
Fineness of powder: smaller than 100μm
Application Condition:
Electrostatic spraying with: 40~70KV
Coating film thickness: 50~100μm
Degreased cold-rolled steel 0.5mm
Curing Requirement: 180 C×10min.
Film Properties:
Gel time(180 C,sec) 120~230
Gloss(60°) ≥85%
Bending(φ1mm) pass
Adhesive(1mm,grade) 0
Pencil hardness: 1H
Impact(direct,reserve) pass 50kg·cm
Storage test(40 C,24hr) good
Weatherability
QUV A353 1000hr maintenance gloss: ≥80%
QUV B313 240hr maintenance gloss: ≥80%
Polyester resin for 95:5 Primid XL 552 powder coating
