HumiSeal - 1B31 Acrylic Conformal Coating

ID PCHM1B31
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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.
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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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