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Rulon Bearings

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Lord Adhesives Thermoset™ SC-400 Silicone Encapsulant
Categories: Polymer; Thermoset; Silicone; Silicone, RTV, Encapsulation Grade

Material Notes: LORD Thermoset SC-400 silicone encapsulant is a two-component system designed for encapsulation of delicate electronic components. Thermoset SC-400 encapsulant system cures to an extremely soft, gel-like consistency using either room temperature or heat cure. This encapsulant system contains a UV dye to aid inspection.

Features: exhibits low shrinkage and stress on components as it cures. provides excellent adhesion to most substrates without the use of a primer. composed of an addition-curing polymer that will not depolymerize when heated in confined spaces. provides excellent electrical insulation properties; provides thermal, mechanical and vibration damping. allows material to fluoresce or glow when exposed to a UV light source; helps ensure proper encapsulation of component.

All information provided by Lord.

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Physical PropertiesOriginal ValueComments
Specific Gravity 0.990 g/ccSC-400 Resin
 0.990 g/ccSC-400 Hardener
 0.990 g/ccMixed
Viscosity 120 cP
@Temperature 25.0 °C
SC-400 Hardener
 160 cP
@Temperature 25.0 °C
Mixed
 200 cP
@Temperature 25.0 °C
SC-400 Resin
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 9.90e+14 ohm-cm
@Temperature 25.0 °C
cured; ASTM D 257
Dielectric Constant 2.7
@Frequency 100000 Hz,
Temperature 25.0 °C
cured; ASTM D 150
Dissipation Factor <= 0.0050
@Frequency 100000 Hz,
Temperature 25.0 °C
cured; ASTM D 150
 
Thermal PropertiesOriginal ValueComments
CTE, linear 326 µm/m-°C
@Temperature 25.0 °C
cured
Thermal Conductivity 0.200 W/m-KASTM D 2214
Glass Transition Temp, Tg -110 °Ccured
 
Processing PropertiesOriginal ValueComments
Working Life 15.0 min
@Temperature 25.0 °C
Mixed
Gel Time 25.0 min
@Temperature 25.0 °C
mixed
Shelf Life 6.00 Month
@Temperature 25.0 °C
each component from date of manufacture
 
Descriptive Properties
AppearanceClear LiquidSC-400 Resin
 Clear LiquidSC-400 Hardener
 Clear LiquidMixed
HardnessSoft Gel
Storage Modulus0.00275 MPa

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PLORD9294 / 232650

Aluminum Castings

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