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TGIC Curing 93/7 Polyester Resin for Sand Texture Powder Coatings
93:7 TGIC Cure Polyester Resin NH3385 with Good Mechanical Propertoes for Sand Texture Powder Coatings
NH3385 is a saturated carboxyl polyester resin for applications of polyester/TGIC powder coating system. Suitable for sand texture powder coatings.
The powder coating is prepared by mixing resin, pigment and filler, curing agent and other additives in a certain proportion, and then by hot extrusion, crushing and screening. They are stored stably at room temperature. After electrostatic spraying or fluidized bed dip coating, they are heated, baked, melted and solidified to form a flat and bright permanent film, so as to achieve the purpose of decoration and anti-corrosion.
◎Recommend Formulation: NH3385—TGIC
| NH3385 | TGIC | BaSO4 | Sand Texture Additive | Bentonite | Carbon Black |
| 558 | 42 | 389 | 2 | 3 | 6 |
◎Basic Features:
Low Costs
Good Sand Texture Effect
Good Mechanical Properties
Good Storage Stability
◎Specifications I:
| Appearance | White or Light Yellow Transparent Flakes |
| Color (50% DMF) | max:1 |
| Acid Number (mgKOH/g) | 30～35 |
| Softening Point (℃) | 103～113 |
| Glass Transition Temp. (℃) | ～63 |
| Melting Viscosity (200℃, cone/plate, mPa·s) | 5500～7500 |
| Reactivity at 180℃ (s, 7% TGIC) | 70～130 |
| Curing Requirement | 200℃×10~20min |
| 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 | |
| Application Condition | Electrostatic Spraying With | 40～70KV |
| Coating Film Thickness | 50～100μm | |
| Degreased Cold-rolled Steel | 0.5mm | |
| Film Properties | Gel Time (180℃, sec) | 100~200 |
| Horizontal Flow (180℃, mm) | 14~17 | |
| Gloss (60°) | ~10% | |
| Bending (φ1mm) | Pass | |
| Adhesive (1mm, grade) | 0 | |
| Pencil Hardness | ≥1H | |
| Impact (50cm) | Pass | |
◎More Codes:
| Code | Ratio | Cure Cycle | AV (mgKOH/g) | Viscosity (mPa.s/200℃) | Tg (℃) | Reactivity (s/180℃) | Properties |
| NH-3383 | 93/7 | 180℃*12min | 30~35 | 4000～6000 | ~67 | 100-160 | Suitable for fast cure formulation. Excellent outdoor durability. |
| NH-3385 | 93/7 | 200℃*10min | 30~35 | 5500~7500 | ~63 | 70-130 | Suitable for general industrial products, especially sand texture powder coatings. Good mechanical properties. |
| NH-3387 | 93/7 | 200℃*10minn | 30~35 | 4000~6000 | ~63 | 220-280 | Suitable for general industrial products. Good flow and mechanical properties. |
| NH-3395 | 93/7 | 190℃×10min | 30~35 | 4500～5500 | ～67 | 120-180 | Moderate curing speed, good weathering resistance and storage stability. |
☉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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