UV3109-M – UV/moisture cure Conformal Coating
UV3109-M is a single-component, UV-curable, acrylated polyurethane conformal coating that possesses excellent chemical resistance, thermal shock resistance, and moisture resistance. The material is tack-free after exposure to UV light. A secondary moisture cure mechanism will cure unexposed areas of the coating at ambient conditions. This coating fluoresces a bright blue when exposed to UV light (365nm) for easy inspection of coating coverage.
Features and benefits
- Secondary moisture cure
- Solvent-free, Halogen-free, Low odor
- Excellent moisture, heat and chemical resistance.
- Excellent adhesion
- Complies to the RoHS directive 2015/863/EU and 2011/65/EU.
Specifications
TYPICAL UNCURED PROPERTIES
| Properties | UV3109-M |
| Composition | Acrylated Urethane |
| Appearance | Translucent Liquid |
| Color | Colorless / Fluorescent |
| Viscosity @ 25°C, cps | 60 – 120 |
| Specific Gravity | 1.05 |
| Recommended Coating Thickness (μm) | 25 ~ 75 |
TYPICAL CURING PROPERTIES
| Properties | UV3109-M |
| UV Curing | |
| Lamp type | Mercury lamp |
| Intensity, mW/cm² | >50 |
| Energy, mJ/cm² | > 1500 |
| Humidity Curing: | |
| Full Cure Time @ 25ºC, hr | 72 |
TYPICAL CURED PROPERTIES
| Properties | UV3109-M |
| Durometer hardness, shore A | 70~80 |
| Tensile at break, MPa | 1.6 |
| Elongation at Break (%) | 52 |
| Modulus of Elasticity, MPa | 732 |
| Glass Transition Temp., (TMA) ºC | 6 |
| CTE* (<Tg), ppm/K | 77 |
| CTE* (>Tg), ppm/K | 220 |
| Water absorption, 24hr, 25ºC, % | 0.32 |
| Dielectric Withstand Voltage, V | > 1500 |
| Dielectric Constant @1MHz | 3.04 |
| Dissipation Factor @1MHz | 0.012 |
| Volume Resistivity, ohm.cm | 1.8 x 1016 |
| Surface Resistance, ohm | 1.0 x 1016 |
| Comparative Tracking Index (CTI) | 600 |
| Recommended Operating Temperature, ºC | -40 ~ 130 |
Technical Documents
UV3109-M Technical Data Sheet
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