Kinte Materials Science and Technology Co.,Ltd
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Dry-blended Polyester Resin NH5001/NH5508 for Low Gloss Two-component Powder Paint
◇ Applications:
NH5001/NH5508 are saturated carboxyl polyester resins for low gloss polyester/TGIC powder coatings by a dry blending process.
◇ Basic features:
Remarkable flow and weatherability
Good mechanical properties
Good chemical resistance and fine anti-yellowing
Good storage stability
◇ Specifications:
NH5001 NH5508
Appearance: pale yellow flakes pale yellow flakes
Color(50%DMF): ≤3 ≤2
Acid value(mgKOH/g): 46～54 19～25
Softening point(℃): 103～113 103～113
Glass transition temp. ~65 ~63
(Tg)( ℃):
Melting viscosity: 5100±800 7200±800
(200℃, cone/plate, mPa·s)
Reactivity S: 50±25 420±120
(180℃, 10, 5% TGIC)
◇ Recommend Formulation:
| Formulation | NH5001 | NH5508 | TGIC | TiO2 | BaSO4 | Leveling agent | Benzoin |
| I | 270 | — | 30 | 75 | 125 | 3 | 1.5 |
| II | — | 270 | 14 | 75 | 125 | 3 | 1.5 |
| Formulation | NH5001 | NH5508 | TGIC | TiO2 | Leveling agent | Benzoin |
| I | 270 | — | 30 | 150 | 3 | 1.5 |
| II | — | 270 | 14 | 150 | 3 | 1.5 |
◇ Extrusion Condition:
Two-screw extruder
Zone I: 90～110℃ Zone II: 110～120℃
Speed of revolution: 500～1200rpm
Fineness of powder: ＜100μm
Blend I and II in the weight ratio of 1:1 after grinding.
◇ Application Condition:
Electrostatic spraying with: 40～70KV
Coating film thickness: 50～70μm
Degreased cold-rolled steel 0.5mm
◇ Curing Requirement: 200℃×10min
◇ Film Properties:
Gloss(60°): ≤40%
Adhesive(1mm,grade): 0
Pencil hardness: ≥2H
Direct Impact Resistance: pass 50kg·cm
◇ Packaging:PE bags, N.W. 25KG±0.1KG / bag
Remarks:all the polyester resins could be customizes to Non-tin (A) ,anti gas burners(G),tribo gun(T) and anti-blooming(F)
