Saturated carboxyl polyestes Resin HY-5201 HY-5202 General dascription HY-5201 Hy-5202 is a saturated carboxy-polyester resin speidized for powder coatings.The polyesters type powder coating may be produced by combining this resins with TGIC(93:7)and the coatings film will be ploessed of high gloss.Very good mechanical propeties out door durability.HY-5201 is saturated carboxyl polyester resin for applications of Polyester/TGIC powder coating system. | |
Specifications | |
Appearance: | HY-5201 HY-5202 |
Light yellow solid granule | |
Colour (50%DMF solution): | ≤4 ≤4 (ASTM D 1544) |
Acid value (mg KOH/g): | 35+2 35+3 (ASTM D 1613) |
Softening point℃ | 112+1 117+3 (ball and ring) |
Vitrifilcation point℃ | 65+1 67+1 (ASTM D 3418) |
ICI Viscosity(at200℃ pa s) | 0.35-0.45 0.5-0.6 (ASTM D 4287) |
Recommend Formulation | |
Polyester resin | 60% (HY-5201 or HY-5202) |
Epoxy resin | 5 (HY-TGIC) |
Levelling agent | 1 (HY-L1000) |
Titanium dioxid | 20 |
Barium sulfate | 13.7 |
Benzion | 0.3 |
Baking condition | 200℃/10min 200℃/15min |
Extrusion conditions | |
APV Tow-screw extruder | |
Speed of revolution | 500-1200rpm |
Kneader casing temperature℃ | 110-130 |
Fineness of powder | ≤100um |
Application condition | |
Electrostatic spraying Vith | 40-60kv |
Coationg film thickness | 65-85nm |
Pretreating with zinc phosphate | |
Properties Gel time(180dec,sec): |
180-270(HY-5201); 240-330(HY-5202) |
Gloss(60°): | ≥90% |
Bending(Φmm): | pass |
Adhesive(1mm grade) | 0 |
Pencil hardness | ≥1H |
Impact(direct reserve) | pass50kg cm |
Storage test(40℃,24hr) | good |
Weather ability | |
QUV A340 1000hr: maintenance gloss: | ≥80% |
QUV B3B 240hr: maintenance gloss: | ≥80% |
Package and Storage | |
Packaging with PE lined paper bage,Net weight 25kg per bag.stored in dry and well ventilated place under temp 30℃ for 1 year. |
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