HumiSeal - 1A20 Urethane Conformal Coating

ID PCHU1A20
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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

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Description

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

*Actual product colours may vary from on-screen and printed representations.
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