Chase Electronic Coatings HumiSeal® 1B31 EPA Acrylic Conformal Coating

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Chase Electronic Coatings HumiSeal® 1B31 EPA Acrylic Conformal Coating
Categories:	Polymer; Thermoset
Material Notes:	HumiSeal® 1B31 EPA conformal coating is: an acrylic chemistry, fast drying, single component. HumiSeal 1B31 EPA conformal coating has: excellent moisture and environmental protection for printed circuit assemblies, fluorescence under UV light for ease of inspection, rework ability with ease MIL-I-46058C qualification, IPC-CC-830 compliance, RoHS Directive 2002/95/EC compliance. Information provided by Chase Electronic Coatings.
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Physical Properties	Original Value	Comments

Density	0.950 g/cc	ASTM D1475
Solids Content	28 %	± 3%. By weight; Fed-Std-141, Meth. 4044
Volatile Organic Compounds (VOC) Content	684 g/l
Viscosity	265 - 385 cP	Fed-Std-141, Meth. 4287
Thickness	25.0 - 75.0 microns	Recommended coating

Mechanical Properties	Original Value	Comments
Modulus of Elasticity	0.00850 GPa @Temperature 60.0 °C	DMA
	1.05 GPa @Temperature 20.0 °C	DMA
	2.00 GPa @Temperature -40.0 °C	DMA

Electrical Properties	Original Value	Comments
Insulation Resistance	7.00e+10 ohm	Moisture; MIL-I-46058C
	5.50e+12 ohm	MIL-I-46058C
Dielectric Constant	2.6 @Frequency 1e+6 Hz, Temperature 25.0 °C	ASTM D150-98
Dielectric Breakdown	6300 V	ASTM D149
Dissipation Factor	0.010 @Frequency 1e+6 Hz, Temperature 25.0 °C	ASTM D150-98

Thermal Properties	Original Value	Comments
CTE, linear	170 µm/m-°C @Temperature <=14.0 °C	Below Tg; TMA
	340 µm/m-°C @Temperature >=14.0 °C	Above Tg; TMA
Glass Transition Temp, Tg	14.0 °C	DSC

Processing Properties	Original Value	Comments
Cure Time	1.00 hour @Temperature 76.0 °C	Option
	24.0 hour @Temperature 23.0 °C	Option
	168 hour @Temperature 23.0 °C	Optimum Properties
Tack-Free Time	0.500 hour	To handle; Fed-Std-141, Meth. 4061
Shelf Life	24.0 Month @Temperature 23.0 °C	DOM

Descriptive Properties
Dielectric Withstand	>1500 V	per MIL_I_46058C
Flammability	Self Extinguishing	MIL_I_46058C
Fungus Resistance	Passes	ASTM G21
Thermal Shock	-65 to 125°C	per MIL_I_46058C, 50 cycles

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PCHAS903 / 239764

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