HumiSeal - 1B31 Acrylic Conformal Coating
ID
PCHM1B31
HumiSeal® 1B31 is a fast drying, single component, acrylic conformal coating that provides excellent moisture and environmental protection for printed circuit assemblies. HumiSeal® 1B31 demonstrates excellent flexibility, fluoresces under UV light for ease of inspection and is easily repaired.
Description
HumiSeal® 1B31 is a fast drying, single component, acrylic conformal coating that provides excellent moisture and environmental protection for printed circuit assemblies. HumiSeal® 1B31 demonstrates excellent flexibility, fluoresces under UV light for ease of inspection and is easily repaired. HumiSeal® 1B31 coating is MIL-I-46058C qualified, IPC-CC-830 and RoHS Directive 2002/95/EC compliant.
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.
Density, per ASTM D1475 | 0.91 ± 0.02 g/cm3 |
Solids Content, % by weight per Fed-Std-141, Meth. 4044 | 35 ± 3 % |
Viscosity, per Fed-Std-141, Meth. 4287 | 200 ± 15 centipoise |
VOC | 592 grams/litre |
Drying Time to Handle per Fed-Std-141, Meth. 4061 | 10 minutes |
Recommended Coating Thickness | 25 – 75 microns |
Recommended Curing Conditions | 24 hrs @ RT or 30 min @ 76°C |
Time Required to Reach Optimum Properties | 7 days |
Recommended Thinner (dipping & brushing) | HumiSeal Thinner 503 |
Recommended Thinner (spraying) | HumiSeal Thinner 521, 521EU |
Recommended Stripper | Stripper 1080, 1080EU |
Shelf Life at Room Temperature, DOM | 24 months |
Thermal Shock, 50 cycles per MIL-I-46058C | -65°C to 125°C |
Coefficient of Thermal Expansion – TMA | 170 ppm/°C below Tg340 ppm/°C above Tg |
Glass Transition Temperature – DSC | 14°C |
Modulus – DMA | 2000 MPa @ -40°C1050 MPa @ 20°C8.5 MPa @ 60°C |
Flammability, per MIL-I-46058C | Self-Extinguishing |
Dielectric Withstand Voltage, per MIL-I-46058C | >1500 volts |
Dielectric Breakdown Voltage, per ASTM D149 | 7500 volts |
Dielectric Constant, at 1MHz and 25°C per ASTM D150-98 | 2.5 |
Dissipation Factor, at 1MHz and 25°C per ASTM D150-98 | 0.01 |
Insulation Resistance, per MIL-I-46058C | 8.0 x 1014 ohms (800TO) |
Moisture Insulation Resistance, per MIL-I-46058C | 6.0 x 1010 ohms (60GO) |
Fungus Resistance, per ASTM G21 | Passes |
Material Safety Data Sheet (MSDS): Click Here
Technical Data Sheet (TDS): Click Here
*Actual product colours may vary from on-screen and printed representations.
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