Chase Electronic Coatings HumiSeal® 1B18 Acrylic Conformal Coating

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Chase Electronic Coatings HumiSeal® 1B18 Acrylic Conformal Coating
Categories:	Polymer; Thermoset
Material Notes:	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, fluoresces under UV light for ease of inspection and is easily repaired. HumiSeal® 1B18 coating is RoHS Directive 2002/95/EC compliant, and recognized under UL File Number E105698. Information provided by Chase Electronic Coatings.
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Physical Properties	Original Value	Comments

Density	0.920 g/cc	ASTM D1475
Solids Content	30 %	± 2%. By weight; Fed-Std-141, Meth. 4044
Volatile Organic Compounds (VOC) Content	654 g/l
Viscosity	230 - 270 cP	Fed-Std-141, Meth. 4287
Thickness	25.0 - 75.0 microns	Recommended coating

Mechanical Properties	Original Value	Comments
Modulus of Elasticity	0.0111 GPa	DMA

Electrical Properties	Original Value	Comments
Insulation Resistance	7.00e+10 ohm	Moisture; MIL-I-46058C
	5.50e+14 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	67.0 µm/m-°C	TMA
Glass Transition Temp, Tg	42.0 °C	DSC
Flammability, UL94	V-0

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	0.500 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
Fungus Resistance	Passes	ASTM G21
Thermal Shock	-65 to 125°C	per MIL_I_46058C, 50 cycles

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PCHAS902 / 239763

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