Henkel Loctite® Stycast® 2651-40 W1 with CAT 27-1 Epoxy Encapsulant

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Henkel Loctite® Stycast® 2651-40 W1 with CAT 27-1 Epoxy Encapsulant
Categories:	Polymer; Thermoset; Epoxy; Epoxy Encapsulant, Unreinforced
Material Notes:	Loctite Stycast 2651-40 W1 provides the following product characteristics: Low viscosity Room temperature cure capability Can be color coded to specification Cure: Room temperature or Heat cure Application: Potting, Encapsulant Loctite Stycast 2651-40 W1 epoxy encapsulant is designed for general purpose applications and has excellent adhesion to a wide variety of substrates. When fully cured, the material is readily machined with carbide tools. Loctite Stycast 2651-40 W1 can be used with a variety of catalysts. CATALYST DESCRIPTION Loctite CAT 27-1 provides the following product characteristics: Long pot life Excellent chemical resistance Good physical and chemical properties at elevated temperatures Cure: Heat cure Information provided by Henkel.
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Physical Properties	Original Value	Comments

Density	1.05 g/cc	Part B, Loctite 27-1
	1.50 g/cc	Part A, Loctite Stycast 2651-40 W1
Water Absorption	0.040 % @Time 86400 sec	Cured
	0.10 % @Time 605000 sec	7 Days, Cured
Viscosity	275 cP	Part B, Loctite CAT 27-1
Brookfield Viscosity	33000 cP	Part A, Loctite Stycast 2651-40 W1; Spindle 6, speed 5 rpm
Linear Mold Shrinkage	0.0087 cm/cm

Mechanical Properties	Original Value	Comments
Hardness, Shore D	94
Modulus of Elasticity	0.0700 GPa @Temperature 150 °C
	2.60 GPa @Temperature 100 °C
	3.04 GPa @Temperature 50.0 °C
	3.10 GPa @Temperature 35.0 °C

Electrical Properties	Original Value	Comments
Volume Resistivity	2.80e+15 ohm-cm
Surface Resistance	6.50e+16 ohm
Dielectric Constant	4.0 @Frequency 1e+6 Hz
	4.8 @Frequency 50 Hz
	4.8 @Frequency 1000 Hz
Dissipation Factor	0.039 @Frequency 50 Hz
	0.040 @Frequency 1000 Hz
	0.040 @Frequency 1e+6 Hz

Thermal Properties	Original Value	Comments
CTE, linear	49.0 µm/m-°C	Below Tg
	144 µm/m-°C	Above Tg
Thermal Conductivity	0.500 W/m-K
Maximum Service Temperature, Air	175 °C	Continuous
	200 °C	Intermittent
Minimum Service Temperature, Air	-40.0 °C	Continuous
	-40.0 °C	Intermittent
Glass Transition Temp, Tg	141 °C	DMA, Tangent Delta
	145 °C	TMA

Processing Properties	Original Value	Comments
Cure Time	4.00 hour @Temperature 120 °C
Working Life	120 min @Temperature 25.0 °C	100 g
Shelf Life	12.0 Month	Part A, Loctite Stycast 2651-40 W1

Descriptive Properties
Appearance	Black	Part A, Loctite Stycast 2651-40 W1
Mix Ratio, by Volume	100 : 22	Material : Catalyst
Mix Ratio, by Weight	100 : 15	Material : Catalyst
Weight Loss (%)	0.1	@ 150°C
	0.2	@ 200°C
	0.32	@ 250°C
	0.46	@ 300°C
	59.8	@ 700°C

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