Acrylics Conformal coating 1B18

Model No:	1B18

HumiSeal® 1B18 is a single component, fast drying, acrylic conformal coating intended for use on printed circuit assemblies. HumiSeal® 1B18 demonstrates excellent flexibility and electrical properties, fluorescence under UV light for ease of inspection and is easily repaired. It can be applied by spraying, brushing, or dipping methods.

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Humiseal 1B18 Acrylics Conformal Coating Features

excellent moisture and environmental protection for printed circuit assemblies
excellent flexibility
fluorescence under UV light for ease of inspection
rework ability with ease

Applications of HumiSeal® 1B18 Acrylics Conformal Coating

Conformal coatings can be successfully applied to substrates that have been cleaned prior to coating and also to substrates assembled with low residue “no clean” materials. Users should perform adequate testing to confirm compatibility between the conformal coating and their particular assembly materials, process conditions and cleanliness level.

Specification:

Product Specification
Density, per ASTM D1475	0.92 ± 0.02 g/cm³
Solids Content, % by weight per Fed-Std-141, Meth. 4044	30 ± 2 %
Viscosity, per Fed-Std-141, Meth. 4287	250 ± 20 centipoise
VOC	654 grams/litre
Drying Time to Handle per Fed-Std-141, Meth. 4061	30 minutes
Recommended Coating Thickness	25 – 75 microns
Recommended Curing Conditions	24 hrs @ RT or 2 hrs @ 76°C
Time Required to Reach Optimum Properties	7 days
Recommended Thinner	HumiSeal Thinner 73
Recommended Stripper	HumiSeal Stripper 1080
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	67 ppm/°C
Glass Transition Temperature – DSC	42°C
Modulus – DMA	11.1 MPa
Flammability, per UL 94	V-0
Dielectric Withstand Voltage, per MIL-I-46058C	>1500 volts
Dielectric Breakdown Voltage, per ASTM D149	6300 volts
Dielectric Constant, at 1MHz and 25°C, per ASTM D150-98	2.6
Dissipation Factor, at 1MHz and 25°C, per ASTM D150-98	0.01
Insulation Resistance, per MIL-I-46058C	5.5 x 10¹⁴ ohms (550TΩ)
Moisture Insulation Resistance, per MIL-I-46058C	7.0 x 10⁹ohms (70GΩ)
Fungus Resistance, per ASTM G21	Passes

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