The HumiSeal UV40-250 coating is a single-component, polyurethane coating that cures under UV light. It boasts high solids, flexibility, surface hardness, and resistance to moisture and chemicals. Additionally, it fluoresces under UV light for easy inspection and can be applied using spray methods. Available in a 1 L can.
FEATURES
- single component
- high solids
- UV curable
- acrylated polyurethane
HumiSeal UV40-250 conformal coating has
- excellent chemical resistance, surface hardness, flexibility, and moisture resistance.
- secondary moisture cure mechanism for curing in the non-UV exposed shadowed areas
- fluoresces under UV light to allow for coating inspection
- can be applied by selective coating equipment.
- recognized under UL File Number E105698
- MIL-I-46058C qualified
- IPC-CC-830 and RoHS Directive 2015/863/EU
- China Standard GB30981-2020
| Product Specification | |
| Density | 1.06 g/cm3 |
| Minimum Solids Content | 95 % |
| Viscosity, per Fed-Std-141, Meth. 4287 | 300 ± 50 centipoise |
| Recommended Coating Thickness | 25 – 125 microns |
| Recommended UV Dose* | see curing section above |
| Shelf Life at Room Temperature, DOM | 6 months |
| Recommended Stripper** | HumiSeal® Stripper 1100 |
| Thermal Shock, 50 cycles per MIL-I-46058C | -65°C to 125°C |
| Glass Transition Temperature – DSC | 26°C |
| Coefficient of Thermal Expansion | 112 ppm/°C Below Tg 283 ppm/°C Above Tg |
| Modulus – DMA | 1060 MPa -60°C |
| Flammability, per UL-94 | V-0 |
| Dielectric Withstand Voltage, per MIL-I-46058C | >1500 volts |
| Dielectric Constant, at 1MHz and 25°C per ASTM D150-98 | 2.41 |
| Dissipation Factor, at 1MHz and 25°C per ASTM D150-98 | 0.01 |
| Insulation Resistance, per MIL-I-46058C | 8.0 x 1014 ohms (800TΩ) |
| Moisture Insulation Resistance, per MIL-I-46058C | 4.7 x 1010 ohms (47GΩ) |
| Fungus Resistance, per ASTM G21 | Pass |
| Resistance to Chemicals | Excellent |
