Chase Electronic Coatings HumiSeal® UV40 UV UV Curable Urethane Conformal Coating

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Chase Electronic Coatings HumiSeal® UV40 UV UV Curable Urethane Conformal Coating
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	HumiSeal® UV40 is a single component, high solids, UV curable, acrylated polyurethane conformal coating that possesses excellent chemical resistance, surface hardness, flexibility and moisture resistance. The material is tack free after exposure to UV light. A secondary moisture cure mechanism will cure unexposed areas of the coating within 2-3 days at ambient conditions. The coating fluoresces under UV light to allow for coating inspection and can be applied by selective coating equipment. HumiSeal® UV40 coating is recognized under UL File Number E105698, and is MIL-I-46058C qualified, and IPC-CC-830 and RoHS Directive 2011/65/EC compliant. Information provided by Chase Electronic Coatings.
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Physical Properties	Original Value	Comments

Density	1.10 g/cc
Solids Content	>= 95 %
Viscosity	500 - 800 cP	Fed-Std-141, Meth. 4287
Thickness	25.0 - 125 microns	Recommended coating

Mechanical Properties	Original Value	Comments
Modulus of Elasticity	0.0660 GPa @Temperature 80.0 °C	DMA
	4.28 GPa @Temperature 25.0 °C	DMA
	10.36 GPa @Temperature -40.0 °C	DMA

Electrical Properties	Original Value	Comments
Insulation Resistance	4.70e+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
	3.21 @Frequency 1e+10 Hz, Temperature 22.0 °C	ASTM D2520
Dissipation Factor	0.010 @Frequency 1e+6 Hz, Temperature 25.0 °C	ASTM D150-98

Thermal Properties	Original Value	Comments
CTE, linear	85.0 µm/m-°C @Temperature <=45.0 °C	Below Tg; TMA
	197 µm/m-°C @Temperature >=45.0 °C	Above Tg; TMA
Glass Transition Temp, Tg	45.0 °C	DSC
Flammability, UL94	V-0

Processing Properties	Original Value	Comments
Shelf Life	12.0 Month @Temperature 23.0 °C	DOM

Descriptive Properties
Dielectric Withstand	>1500 V	per MIL_I_46058C
Fungus Resistance	Passes	ASTM G21
Resistance to Chemicals	Excellent
Thermal Shock	-65 to 125°C	per MIL_I_46058C

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PCHAS916 / 239777

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