-Item Name: HumiSeal® UV50LV
-Manufacturer: HumiSeal
-Technologies: UV Curable Acrylic Polyurethane Conformal Coating
-Color: Not specified
-Cure Type: UV cure with secondary moisture cure (7 days at ambient)
-Package Size: Contact Techniq VN for details.
-Shelf Life: 12 months
HumiSeal® UV50LV is a one-part, low-viscosity, high-solids, dual-cure acrylated polyurethane conformal coating. It offers excellent chemical resistance, flexibility, and moisture resistance. The coating is tack-free after UV exposure and fully cures in unexposed areas through a secondary moisture cure mechanism within 7 days at ambient conditions. Designed for film coater-type selective coating equipment, it has enhanced flexibility, improving thermal cycling performance. HumiSeal® UV50LV contains no VOCs or solvents and is UL 94 V-0 rated for flammability.
| Property | Before Mixing (Uncured) |
|---|---|
| Density | 1.0 – 1.1 g/cm³ |
| Minimum Solids Content | 95% |
| Viscosity (per Fed-Std-141, Meth. 4287) | 80 – 120 centipoise |
| Recommended Coating Thickness | 25 – 125 microns |
| Shelf Life at Room Temperature | 12 months |
| Property | After Mixing / Cured |
|---|---|
| Glass Transition Temperature (Tg) | -1°C |
| Coefficient of Thermal Expansion | 122 ppm/°C Below Tg, 264 ppm/°C Above Tg |
| Modulus (DMA at 25°C) | 6.394 MPa |
| Flammability (UL-94) | V-0 |
| Dielectric Withstand Voltage | >1500V |
| Surface Insulation Resistance (IPC-J-STD-004 mod.) | 8.61 log10 ohms |
| Surface Resistivity (ASTM D-257) | 7.4 × 10¹⁴ Ohm |
| Volume Resistivity (ASTM D-257) | 3.9 × 10¹³ Ohm·cm |
| Moisture Insulation Resistance (IPC-CC-830) | 3.0 × 10⁹ Ohm |
| SIR 85°C/85%RH (7 days, IPC B24) | Pass >500MΩ |
| Comparative Tracking Index (CTI, ASTM D-3638) | PLC=0 (600V) |
| Thermal Conductivity | 0.152 W/m·K |
| Chemical Resistance | Excellent |
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