Français
HumiSeal - 1A20 Urethane Conformal Coating
HumiSeal® 1A20 is a single component, chemically resistant, fast curing polyurethane conformal coating. HumiSeal® 1A20 fluoresces under UV light for ease of inspection. HumiSeal® 1A20 coating is MIL-I-46058C qualified, IPC-CC-830 and RoHS Directive 2002/95/EC compliant and recognized under UL File Number E105698.
Cleanliness of the substrate is of extreme importance for the successful application of a conformal coating. Surfaces must be free of moisture, dirt, wax, grease, flux residues and all other contaminants. Contamination under the coating could cause problems that may lead to assembly failures. Although its formulation allows HumiSeal® 1A20 to be applied using a wide variety of methods, care should be taken to ensure that it is only applied in an environment where the ambient relative humidity is at 60% or less. Application of the coating when the RH is higher than 60% can cause acceleration of the cure reaction, resulting in bubbles in the dried film.
| Product Specification | |
|---|---|
| Product Specification | 1A20, 1A33, 2A64, 1H2O Products |
| Density, per ASTM D1475 | 1.02 ± 0.02 g/cm3 |
| Solids Content, % by weight per Fed-Std-141, Meth. 4044 | 50 ± 3 % |
| Viscosity, per Fed-Std-141, Meth. 4287 | 100 ± 30 centipoise |
| VOC | 511grams/litre |
| Recommended Coating Thickness | 25 -75 microns |
| Drying Time to Handle per Fed-Std-141, Meth. 4061 | 60 minutes |
| Recommended Curing Conditions | 24 hrs @ RT or 3 hrs @ 76°C |
| Time Required to Reach Optimum Properties | 7 days |
| Thinner, if needed (dipping, brushing, spraying) | HumiSeal® Thinner 521, 521EU |
| Recommended Stripper | HumiSeal® Stripper 1072 |
| Shelf Life at Room Temperature, DOM | 6 months |
| Thermal Shock, per MIL-I-46058C | -65°C to 125°C |
| Coefficient of Thermal Expansion – TMA | 515 ppm/°C |
| Glass Transition Temperature – DSC | 71°C |
| Modulus – DMA | 89.6 MPa |
| Flammability, per UL94 | V-0 |
| Dielectric Withstand Voltage, per MIL-I-46058C | >1500 volts |
| Dielectric Constant, at 1MHz and 25°C per ASTM D150-98 | 3.5 |
| Dissipation Factor, at 1MHz and 25°C per ASTM D150-98 | 0.028 |
| Insulation Resistance, per MIL-I-46058C | 3.0 x 1014 ohms (300TO) |
| Moisture Insulation Resistance, per MIL-I-46058C | 4.8 x 1010 ohms (48GO) |
| Fungus Resistance, per ASTM G21 | Passes |
| Resistance to Chemicals | Excellent |
Technical Data Sheet (TDS): Click Here
Material Safety Data Sheet (MSDS): Click Here