Chase Electronic Coatings HumiSeal® 1B31-HV Acrylic Conformal Coating

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

Density	0.920 g/cc	ASTM D1475
Solids Content	41.5 %	± 2%. By weight; Fed-Std-141, Meth. 4044
Volatile Organic Compounds (VOC) Content	523 g/l
Viscosity	400 - 440 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	6.00e+10 ohm	Moisture; MIL-I-46058C
	8.00e+14 ohm	MIL-I-46058C
Dielectric Constant	2.5 @Frequency 1e+6 Hz, Temperature 25.0 °C	ASTM D150-98
Dielectric Breakdown	7500 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	0.500 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	0.170 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
Fungus Resistance	Passes	ASTM G21
Thermal Shock	-65 to 125°C	per MIL_I_46058C, 50 cycles

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PCHAS905 / 239766

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