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Momentive Performance Materials RTV511 Silicone Rubber Compound for Low Temperature Potting, Encapsulating and Sealing, White
Categories: Polymer; Adhesive; Thermoset; Silicone; Silicone, RTV, Adhesive/Sealant Grade

Material Notes: RTV511, RTV560 and RTV577 silicone rubber compounds are low temperature two-part silicone elastomers. They are supplied ready to use with a base compound and DEBT (deputy tin deflagrate) as the standard curing agent. DEBT is suitable for most applications, however, other catalysts are available to facilitate deep section cure, faster cure and automated mixing.

Mechanical and electrical properties for 0.5 wt% DEBT curing agent added, cured 7 days at 25°C and 50% relative humidity.

Key Performance Properties:

  • Variable work times and cure rates by adjusting the amount and type of curing agent
  • Room temperature cure
  • Composition free of solvents and solvent odor
  • Excellent adhesion capabilities with primer
  • Excellent release properties

Applications:

  • Cast-in-place heat shielding
  • Thermal insulation
  • Low and high-temperature bonding
  • Potting and encapsulation of electrical assemblies

GE Silicones became a part of Momentive Performance Materials in 2006.

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.21 g/cc
Viscosity 16000 cP
Linear Mold Shrinkage 0.013 cm/cm
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 42
Tensile Strength, Ultimate 27.0 kg(f)/cm²
Elongation at Break 170 %
Tear Strength 3.80 kg(f)/cm
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 2.00e+14 ohm-cm
Dielectric Constant 3.6
@Frequency 1000 Hz
Dielectric Strength 20.5 kV/mm
Dissipation Factor 0.0050
@Frequency 1000 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 220 µm/m-°C
@Temperature 20.0 °C
Specific Heat Capacity 0.350 BTU/lb-°F
Thermal Conductivity 0.260 W/m-K
Maximum Service Temperature, Air 204 °CContinuous
 260 °CIntermittent
Brittleness Temperature -115 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 24.0 hour
@Temperature 25.0 °C
0.5% DBT curing agent added
 
Descriptive Properties
ColorWhite
ConsistencyPourable
Work Time1.5 hoursAt 25°C, 0.5% DBT curing agent added

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Momentive Performance Materials RTV577 Silicone Rubber Compound for Low Temperature Potting, Encapsulating and Sealing, White
Momentive Performance Materials RTV511 White Extreme Low Temperature Potting/Encapsulating Compound
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PGESIL030 / 41021

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