Chase Electronic Coatings HumiSeal® UV500 Acrylic Conformal Coating

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Chase Electronic Coatings HumiSeal® UV500 Acrylic Conformal Coating
Categories:	Polymer; Thermoset
Material Notes:	HumiSeal® UV500 is a high solids UV dual cure elastomeric acrylate conformal coating. HumiSeal® UV500 exhibits excellent flexibility, moisture resistance and electrical insulation properties as well as good chemical resistance. The formulation allows chemical stripping using a dedicated stripper. HumiSeal® UV500 is tack free after exposure to UV light and the secondary moisture cure mechanism will fully cure any unexposed areas of the coating within 7 days at ambient conditions. Cured HumiSeal® UV500 has a higher flexibility compared to other UV curable conformal coatings, giving improved performance in thermal cycling tests. The coating fluoresces under UV light to allow coating inspection and can be applied by all selective coating equipment. HumiSeal® UV500 is recognized under UL File Number E105698. Information provided by Chase Electronic Coatings.
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Physical Properties	Original Value	Comments

Density	1.00 - 1.10 g/cc
Solids Content	>= 98 %
Viscosity	275 - 375 cP	Fed-Std-141, Meth. 4287
Thickness	25.0 - 125 microns	Recommended coating

Mechanical Properties	Original Value	Comments
Modulus of Elasticity	0.000400 GPa @Temperature 25.0 °C	DMA

Electrical Properties	Original Value	Comments
Volume Resistivity	8.00e+12 ohm-cm	ASTM D257
Surface Resistance	8.90e+10 ohm	IPC J-STD-004 (mod.)
	2.00e+11 ohm	ASTM D257
Insulation Resistance	1.60e+10 ohm	Moisture; MIL-I-46058C
	4.50e+11 ohm	MIL-I-46058C

Thermal Properties	Original Value	Comments
CTE, linear	137 µm/m-°C @Temperature <=-43.0 °C	Below Tg; TMA
	311 µm/m-°C @Temperature >=-43.0 °C	Above Tg; TMA
Thermal Conductivity	0.505 W/m-K
Glass Transition Temp, Tg	-43.0 °C	DSC
Flammability, UL94	V-0

Processing Properties	Original Value	Comments
Shelf Life	6.00 Month @Temperature 23.0 °C	DOM

Descriptive Properties
Dielectric Withstand	>1500 V	per MIL_I_46058C
Fungus Resistance	Passes	IPC-TM-650 2.6.1.1
Resistance to Chemicals	Good

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