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	Metric	English	Comments

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

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	80	80

Electrical Properties	Metric	English	Comments
Volume Resistivity	3.50e+16 ohm-cm	3.50e+16 ohm-cm
Surface Resistance	3.80e+16 ohm	3.80e+16 ohm
Dielectric Constant	2.75 @Frequency 1e+6 Hz	2.75 @Frequency 1e+6 Hz
Dielectric Strength	16.5 kV/mm @Thickness 2.64 mm	420 kV/in @Thickness 0.104 in
Dissipation Factor	0.12 @Frequency 1e+6 Hz	0.12 @Frequency 1e+6 Hz

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.260 W/m-K	1.80 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	135 °C	275 °F
Minimum Service Temperature, Air	-40.0 °C	-40.0 °F

Processing Properties	Metric	English	Comments
Cure Time	2880 - 4320 min @Temperature 23.0 °C	48.0 - 72.0 hour @Temperature 73.4 °F	Secondary Cure: Moisture cure for shadowed areas on a populated board
Shelf Life	6.00 Month @Temperature 20.0 - 30.0 °C	6.00 Month @Temperature 68.0 - 86.0 °F

Descriptive Properties
Appearance	Clear Liquid

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.

PHENK7957 / 255442

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