Kinte Materials Science and Technology Co.,Ltd
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Powder Paint Polyester resin with Dry-blended for 25-40% Gloss
◇ Applications:
NH8001/NH8505 are saturated carboxyl polyester resins for low gloss polyester/TGIC powder coatings by a dry blend procedure.
The balance between high leveling, high weather resistance and mechanical properties of powder coating was solved through the design of product molecular structure, the screening of monomers and additives and the study of synthesis kinetics;
In this model, we upgraded the formula to achieve the balance between high leveling, weather resistance and mechanical properties of powder coatings.
◇ Basic features:
Good leveling
Excellent mechanical properties
Good storage stability
Good chemical resistance and fine anti-yellowing
Good weathering resistance
◇ Specifications:
NH8001 NH8505
Appearance: pale yellow flake pale yellow flake
Color(50%DMF): ≤2 ≤2
Acid number(mgKOH/g): 48～54 19～24
Softening point(℃): 100～110 103～113
Glass transition temp.( ℃): ~62 ~62
Melting viscosity: 3500±800 6250±1250
(200℃, cone/plate, mPa·s)
Reactivity at 180℃ : 80±30 400±120
(s, 10, 5% TGIC)
◇ Recommend Formulation:
| Formulation | NH8001 | NH8505 | TGIC | Filler ＆ pigment | Leveling agent | Benzion |
| I | 270 | — | 30 | 200 | 3 | 1.5 |
| II | — | 270 | 14.2 | 200 | 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
Blending Extrude I and II with weight ratio 1:1 before grinding.
◇ Application Condition:
Electrostatic spraying with: 40～70KV
Coating film thickness: 50～80μm
Degreased cold-rolled steel 0.5mm
◇ Curing Requirement: 180℃×20min or 200℃×10min
◇ Film Properties:
Gloss(60°): ≤40%
Adhesive(1mm,grade): 0
Pencil hardness: 1H
Direct Impact (50cm): pass
◇ 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)
