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Outdoor Low Gloss Polyester/TGIC Resin, Super Durable Blended Polyester Resin
◎Introduction
NH8003 & NH8505 are polyester resins with high and low acid value respectively, which are used in polyester/TGIC powder coating system. NH-8003 and NH-8505 are respectively made into powder and dry mixed to produce outdoor semi-gloss powder coatings.
With its advantages of economy, environmental protection, high efficiency, and excellent performance, powder coatings are gradually replacing organic solvent-based coatings and become an important development direction in the coatings industry, which has maintained a rapid growth rate. Polyester powder coatings are widely used in the field of painting due to their excellent durability, decoration, and processability.
Polyester powder coatings use polyester resin as the main film-forming material, add TGIC, HAA, epoxy resin, etc. as curing agents, supplemented by leveling agents, additives, pigment fillers, and other components, after mixing, melting and other processes processed into powder coating. The powder coating is electrostatically sprayed on the workpiece. At a certain temperature and time, the resin is melted and cross-linked and then solidified into a smooth, hard, and flexible coating. The cured coating film will not be softened again due to the increase in temperature, and the coating is solvent-free, pollution-free, and 100% film-forming, which not only saves resources but also saves energy.
◎Basic Features
Good mechanical properties
Excellent weather resistance
Excellent boiling resistance
◎Recommend Formulation:
| Formulation | NH8003 | NH8505 | TGIC | TiO2 R930 | BaSO4 (44HB) | PV-88 | Benzion |
| I | 270 | — | 30 | 75 | 125 | 3 | 1.5 |
| II | — | 285 | 15 | 75 | 125 | 3 | 1.5 |
◎Specifications I
| Items | NH8003 | NH8606 |
| Appearance | Light-colored flake | Light-colored flake |
| Acid Number (mgKOH/g) | 48～54 | 19～24 |
| Softening Point (℃) | 105～115 | 103～113 |
| Glass Transition Temp. (℃) | ～68 | ～62 |
| Melting Viscosity (200℃, cone/plate, mPa·s) | 4000~6000 | 530~6300 |
| Reactivity at 180℃ (s, 10, 4% TGIC) | 60-120 | 250-360 |
| Curing Requirement | 200℃×15min | |
| Packaging | PE Bags, Net Weight 25kg ± 0.1kg / bag | |
◎Specifications II
| 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 | 50～70μm | |
| Degreased Cold-rolled Steel | 0.5mm | |
| Film Properties | Gloss (60°) | ≤35% |
| Bending (φ2mm) | Pass | |
| Adhesive (1mm, grade) | 0 | |
| Pencil Hardness | ≥H | |
| Impact (50cm) | Pass | |
◎More Code
| Code | Ratio | Cure Cycle | Acid Value (mgKOH/g) | Viscosity (mPa.s/200℃) | Tg (℃) | Reactivity (s/180℃) | Properties |
| NH8001 | 90/10 | 200℃*10min | 48~54 | 2700~4300 | ~62 | 50-110 | Dry-blended for 25-40% gloss powder coating; Excellent anti-yellowing, good flow. |
| NH-8505 | 95/5 | 200℃*10min | 19~24 | 5000~7500 | ~62 | 280-520 | |
| NH8002 | 90/10 | 200℃*10min | 49~55 | 3500~6500 | ~61 | 50-150 | Dry-blended for low gloss powder coatings with good flexibility and high impact resistance. |
| NH8507 | 95/5 | 200℃*10min | 21~25 | 7500~10500 | ~62 | 200-400 | |
| NH8003 | 90/10 | 200℃*15min | 48~54 | 4000~6000 | ~68 | 60-120 | Dry-blender for outdoor semi-gloss powder coatings, good mechanical properties, excellent weather resistance and boiling resistance. |
| NH8505 | 95/5 | 200℃*15min | 19~24 | 5300~6300 | ~62 | 250-360 | |
| NH8003 | 90/10 | 200℃*10min | 48~54 | 4000~6000 | ~68 | 60-120 | Dry-blended for low gloss powder coatings, suitable for heat transfer print powder coatings with good outdoor durability and excellent mechanical properties. |
| NH8606 | 96/4 | 200℃*10min | 20~25 | 8000~10000 | ~60 | 280-400 |
◎Remarks: All the polyester resins could be customized to Non-tin (A), anti gas burners (G), tribo gun (T) and anti-blooming (F).
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