Polyurethane Thermosetting Powder Coating

Polyurethane Thermosetting Powder coating mainly composed of durable Hydroxyl Polyester resin and Isocyante curing agent which provides excellent weathering, corrosion & chemical resistance properties with smooth finish. The color and surface effects can be customized as per requirements & specifications. The coating is excellent for use on Land & Naval Platforms namely components that are subjected to high degrees of exposure to oil and saline water and are prone to corrosion, debilitating structural rigidity & performance.

Physical Properties of Formulation

Powder Properties Sample Values
Gel Time @2000C 210 sec
Particle Size Distribution < 32 μm 32.00%
Particle Size Distribution < 63 μm 94.20%
Particle Size Distribution < 80 μm 99.80%
Particle Size Distribution < 100 μm 100%
Storage Stability @250C 6 Months
Test Panels
a) Degreased, derusted, phosphated, passivated 110 X 64mm, 0.5mm thick M.S. Sheet.
b) Degreased, chromated, passivated 110 X 64 mm, 0.6 mm thick, Aluminum Sheet.

Powder Application

Powder Properties Sample Values
Gun Voltage 50-70 KV
Curing Temprature 200o C (Metal Temperature)
Curing Time 12 Mins
Recommended Film Thickness 50-70 μm

Coating Performance Properties

Cured Film Properties Method Standard Observation
Finish ASTM-D-1729 Satin Finish Satin Finish
Gloss @60o Head ASTM-D-523 30-50% 30-40%
Cross Hatch Test* ASTM-D-3359 GT-0 GT-0
Salt Spray Resistance ASTM-B-117 1000 Hrs. Passes
Humidity Resistance DIN-50017 1000 Hrs. Passes
Impact Forward Kg. cm. ASTM-D-2794-69 120 min. Passes
Impact Reverse Kg. cm. ASTM-D-2794-69 120 min. Passes
Conical Mandrel ASTM-D-522 6 min. Passes
Weathering Resistance ASTM-G-154 GR>50% & ΔE < 5 after 250hUVA test Passes
*- GT-0 ~ Excellent / GT-10 ~ Bad