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Ensinger PEI

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Henkel Loctite® Stycast® ES 1904 Two-Component Epoxy Encapsulant
Categories: Polymer; Thermoset; Epoxy; Epoxy Encapsulant, Unreinforced

Material Notes: Loctite Stycast ES 1904 provides the following product characteristics:

Cure: Room temperature cure

Application: Potting and Encapsulating

Loctite Stycast ES 1904 is an opaque, medium-viscosity epoxy resin formulation recommended for small potting and laminating applications, excellent structural, mechanical and electrical properties are required. This two-part adhesive exhibits good wetting, cures at room temperature and develops strong, low shrinkage bonds to most materials including optical fibers, glass ceramics, most metals. It has excellent dimensional stability over a wide temperature range. This product is typically used in applications with an operating range of -60 °C to +125 °C.

Information provided by Henkel.

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Physical PropertiesOriginal ValueComments
Density 1.09 g/ccPart B
 1.15 g/ccMixed
 1.19 g/ccPart A
Water Absorption 0.30 %
@Time 86400 sec
Viscosity 25000 cPPart A
 40000 cPMixed
 50000 cPPart B
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 90
Tensile Strength 9900 psi
Elongation at Break 6.0 %
Flexural Strength 100 MPa
Compressive Strength 131 MPa
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 3.00e+16 ohm-cm
Surface Resistance 3.00e+16 ohm
Dielectric Constant 4.0
@Frequency 1000 Hz
Dielectric Strength 1640 V/mil
Dissipation Factor 0.0090
@Frequency 1000 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 68.0 µm/m-°C
@Temperature <=80.0 °C
Pre Tg (Alpha 1)
 190 µm/m-°C
@Temperature >=80.0 °C
Post Tg (Alpha 2)
Maximum Service Temperature, Air 125 °C
Minimum Service Temperature, Air -60.0 °C
Glass Transition Temp, Tg 80.0 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 1.00 hour
@Temperature 100 °C
Alternate Cure Option 2
 2.00 hour
@Temperature 65.0 °C
Alternate Cure Option 1
 12.0 - 24.0 hour
@Temperature 25.0 °C
Recommended Cure
Pot Life 8.00 - 10.0 min100 g mass
Gel Time 9.00 - 14.0 min100 g mass
 
Descriptive Properties
AppearanceOpaqueCured
Mix Ratio, by Volume2 : 1Part A : Part B
Mix Ratio, by Weight100 : 46Component A : Component B

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PHENK7951 / 255436

Proto3000 – 3D Engineering Solutions

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