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	Metric	English	Comments

Density	0.950 g/cc	0.0343 lb/in³	ASTM D1475
Solids Content	28 %	28 %	± 3%. By weight; Fed-Std-141, Meth. 4044
Volatile Organic Compounds (VOC) Content	684 g/l	684 g/l
Viscosity	265 - 385 cP	265 - 385 cP	Fed-Std-141, Meth. 4287
Thickness	25.0 - 75.0 microns	0.984 - 2.95 mil	Recommended coating

Mechanical Properties	Metric	English	Comments
Modulus of Elasticity	0.00850 GPa @Temperature 60.0 °C	1.23 ksi @Temperature 140 °F	DMA
	1.05 GPa @Temperature 20.0 °C	152 ksi @Temperature 68.0 °F	DMA
	2.00 GPa @Temperature -40.0 °C	290 ksi @Temperature -40.0 °F	DMA

Electrical Properties	Metric	English	Comments
Insulation Resistance	7.00e+10 ohm	7.00e+10 ohm	Moisture; MIL-I-46058C
	5.50e+12 ohm	5.50e+12 ohm	MIL-I-46058C
Dielectric Constant	2.6 @Frequency 1e+6 Hz, Temperature 25.0 °C	2.6 @Frequency 1e+6 Hz, Temperature 77.0 °F	ASTM D150-98
Dielectric Breakdown	6300 V	6300 V	ASTM D149
Dissipation Factor	0.010 @Frequency 1e+6 Hz, Temperature 25.0 °C	0.010 @Frequency 1e+6 Hz, Temperature 77.0 °F	ASTM D150-98

Thermal Properties	Metric	English	Comments
CTE, linear	170 µm/m-°C @Temperature <=14.0 °C	94.4 µin/in-°F @Temperature <=57.2 °F	Below Tg; TMA
	340 µm/m-°C @Temperature >=14.0 °C	189 µin/in-°F @Temperature >=57.2 °F	Above Tg; TMA
Glass Transition Temp, Tg	14.0 °C	57.2 °F	DSC

Processing Properties	Metric	English	Comments
Cure Time	60.0 min @Temperature 76.0 °C	1.00 hour @Temperature 169 °F	Option
	1440 min @Temperature 23.0 °C	24.0 hour @Temperature 73.4 °F	Option
	10100 min @Temperature 23.0 °C	168 hour @Temperature 73.4 °F	Optimum Properties
Tack-Free Time	30.0 min	0.500 hour	To handle; Fed-Std-141, Meth. 4061
Shelf Life	24.0 Month @Temperature 23.0 °C	24.0 Month @Temperature 73.4 °F	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

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

PCHAS903 / 239764

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