AC-42 Polyurethane Conformal Coating

SYNTHITEAC-42 is an excellent fast-curing, air-drying polyurethane conformal coating with high-temperature resistance, moisture resistance, and fungal resistance, suitable for the protective requirements of all electronic and electrical components. It offers the following outstanding characteristics:

- Fungus resistance

- Fast curing, components can dry within 30 minutes for subsequent operations

- Multiple application methods (dip coating, brushing, or spraying, etc.)

- Temperature resistance up to 155°C

- Excellent chemical resistance

- Oil and moisture resistance

- Excellent printed circuit board coating- Excellent abrasion resistance

- Good flexibility

- UV indicator

- Excellent adhesion

- Suitable for all types of electronic and electrical component conformal coatingsPhysical Properties
Color Clear amber
Density, @ 25°C, g/ml 0.850 - 0.970 g/ml
Viscosity, Brookfield, @ 25°C, mPa·s 400 - 700
Film thickness, (ASTM D-115), µm/side 200-700 µm
Solid content, % 40 - 48
Air-dry time (on copper) Tack-free 30
Surface dry 60
Thinner T-500X
-V-173-C-2 Approved

Electrical Properties
Dielectric strength, ASTM D-115, Volts/mil 1800 (dry)
1200 (wet)
Fungus resistance (MIL-V-173C-2)