Henkel Loctite® Stycast® US 2350 Two-Component Flexible, Flame Retardant, Polyurethane Compound

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Henkel Loctite® Stycast® US 2350 Two-Component Flexible, Flame Retardant, Polyurethane Compound
Categories:	Polymer; Thermoset; Polyurethane, TS
Material Notes:	Loctite Stycast US 2350 provides the following product characteristics: Cure: Room temperature cure Application: Potting and Encapsulating Typical Assembly Applications: Circuit Board Protection, Automotive electronic applications or Telecommunication devices Loctite Stycast US 2350 is a flexible, flame retardant, mineral filled, polyurethane compound. This potting compound has long pot life, and is low viscosity so it flows well and adheres to many substrates. It has very low odor and does not contain TDI or mercury compounds. Information provided by Henkel.
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Physical Properties	Original Value	Comments

Density	1.24 g/cc	Part A
	1.40 g/cc	Cured
	1.46 g/cc	Part B
Water Absorption	0.090 % @Time 86400 sec
Brookfield Viscosity	55 cP	RVF, Spindle 2, speed 20 rpm
	2400 cP	Mixed; RVF, Spindle 2, speed 20 rpm
	13000 cP	RVF, Spindle 5, speed 20 rpm
Linear Mold Shrinkage	0.0085 cm/cm

Mechanical Properties	Original Value	Comments
Hardness, Shore A	85
Tensile Strength	3.28 MPa

Electrical Properties	Original Value	Comments
Volume Resistivity	6.12e+13 ohm-cm
Surface Resistance	1.54e+15 ohm
Dielectric Constant	4.09 @Frequency 100000 Hz
	5.06 @Frequency 1000 Hz
	6.14 @Frequency 100 Hz
Dielectric Strength	954 V/mil @Thickness 20.0 mm
Dissipation Factor	0.042 @Frequency 100000 Hz
	0.132 @Frequency 1000 Hz
	0.178 @Frequency 100 Hz

Thermal Properties	Original Value	Comments
Thermal Conductivity	0.510 W/m-K
Flammability, UL94	V-2 @Thickness 6.10 mm
	V-0 @Thickness 9.53 mm

Processing Properties	Original Value	Comments
Cure Time	1.00 - 3.00 hour @Temperature 65.0 - 85.0 °C	Alternate
	12.0 - 24.0 hour @Temperature 23.0 °C	Recommended
Working Life	45.0 min @Temperature 25.0 °C	300 g
Gel Time	90.0 min	300 gram mass
	103 min	Techne Gel, 140 gram mass

Descriptive Properties
Appearance	Black	Cured
	Black	Part B
	Brown	Part A
Mix Ratio, by Volume	1 : 4	Part A : Part B
Mix Ratio, by Weight	21 : 100	Component A : Component B
Weight Loss (%)	0.19	Weight Loss after 168 hrs @ 125ºC

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PHENK7967 / 255451

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