SEAYU® UV3342LV-80 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. SEAYU ® UV3342LV-80 is recognized under UL File Number E479913, and is in full compliance with the RoHS directives 2015/863/EU and 2011/65/EU.
FEATURES
- UV Light Cure
- Bright Blue Fluorescing
- Secondary Moisture Cure
- Excellent Adhesion
- Solvent-Free
- Chemical Resistance
- Halogen-Free
- Moisture Resistance
- Low Odor
- Thermal Shock Resistance
TECHNICAL DATA
| Typical Properties of Uncured Material | |
| Chemical Class | Acrylated Urethane |
| Appearance | Translucent Liquid |
Density (g/cm³) | 1.05 |
| Viscosity (mPa.s) GB/T2794-2013 | 60-120 |
| Recommended Coating Thickness（μm） | 25-75 |
TECHNICAL CURING PERFORMANCE
Recommended UV Cure Condition(s) High pressure mercury vapor lamp:Intensity(50mW/cm²) | 30 |
Recommended Moisture Cure Condition (h) 70% RH@ 25°C | 72 |
TYPICAL PROPERTIES OF CURED MATERIALS
Hardness(A) GB/T2411-2008 | 70-80 |
Adhesion GB/T 9286-1998 | 5B |
| Tensile at Break (MPa) | 1.6 |
Elongation at Break (%) GB/T1040-2006 | 52 |
Modulus of Elasticity (MPa) at 25℃,DMA | 732 |
Glass Transition Temperature (˚C) TMA | 6 |
Coefficient of Thermal Expansion（ppm/˚C TMA | 77/Below Tg 220/Above Tg |
Water absorption (% @25℃, 24h) ISO 62:2008 | 0.32 |
Dielectric Withstand Voltage (V) IPC-TM-650 2.5.7.1:2000 | >1500 |
| Dielectric Constant (1 MHz) | 3.04 |
| Dissipation Factor (1 MHz) | 0.012 |
| Volume Resistivity (ohm-cm) | 1.8×10^16 |
| Surface Resistivity (ohm) | 1.0×10^16 |
Comparative tracking index (CTI) GB/T 4207-2012 | 600 |
Flammability | UL 94V-0 |
Recommended Operating Temperature (℃) | -40 ~130 |
Moisture and Insulation Resistance IPC-TM-650 2.6.3.4A (65℃/90%RH) | Pass |
Fungus Resistance IPC-TM-650 2.6.1.1 | Pass |
Temperature Shock Test -40 to +110℃, 500 cycles | Pass |
Salt Spray Test GB/T 1771-2007(168H) | Pass |
