Henkel Loctite® Stycast® PC 40-UMF Single-Component Urethane Acrylate Conformal Coating

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Henkel Loctite® Stycast® PC 40-UMF Single-Component Urethane Acrylate Conformal Coating
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Loctite Stycast PC 40-UMF provides the following product characteristics: Single component VOC free UV and moisture curable Cure: Ultraviolet (UV) light activation followed by room temperature moisture cure Application: Conformal coating Key Substrates: Variety of metal surfaces Ceramic Glass filled epoxy Loctite Stycast PC 40-UMF conformal coating is specifically formulated to rapidly gel and immobilize when exposed to UV light and then fully cure when exposed to atmospheric moisture, ensuring optimum performance even in shadowed areas. Loctite Stycast PC 40-UMF conforms to IPC-CC-830 requirements. Information provided by Henkel.
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Physical Properties	Original Value	Comments

Specific Gravity	1.08 g/cc	Uncured
Viscosity	250 cP	Nominal Viscosity
Outgassing - Total Mass Loss	<= 0.010 %	NASA Outgassing; CVCM
	0.36 %	NASA Outgassing; WVR
	0.87 %	NASA Outgassing; TML

Mechanical Properties	Original Value	Comments
Hardness, Shore D	80

Electrical Properties	Original Value	Comments
Volume Resistivity	3.50e+16 ohm-cm
Surface Resistance	3.80e+16 ohm
Dielectric Constant	2.75 @Frequency 1e+6 Hz
Dielectric Strength	420 V/mil @Thickness 2.64 mm
Dissipation Factor	0.12 @Frequency 1e+6 Hz

Thermal Properties	Original Value	Comments
Thermal Conductivity	0.260 W/m-K
Maximum Service Temperature, Air	135 °C
Minimum Service Temperature, Air	-40.0 °C

Processing Properties	Original Value	Comments
Cure Time	48.0 - 72.0 hour @Temperature 23.0 °C	Secondary Cure: Moisture cure for shadowed areas on a populated board
Shelf Life	6.00 Month @Temperature 20.0 - 30.0 °C

Descriptive Properties
Appearance	Clear Liquid

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