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Chemically Resistant adhesives

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CHT Group QSil 266 Addition Cure Potting Material
Categories: Polymer; Thermoset; Silicone

Material Notes: Product Description: QSil 266 is a two-component 100% silicone solids elastomer designed for electronic potting applications. The system offers a hard, thermally conductive, low modulus material that is readily repairable.

Key Features:

  • 100% solids, no solvents
  • Excellent thermal conductivity
  • Heat cure required

Formerly Amber Chemical Co (ACC Silicones), aquired by CHT in 2017

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Physical PropertiesOriginal ValueComments
Specific Gravity 2.10 g/ccUncatalyzed, QSil 266A
 2.19 g/ccUncatalyzed, QSil 266B
Viscosity 100000 cPUncatalyzed, QSil 266A
 100000 cPUncatalyzed, QSil 266B
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 60Cured 15 minutes at 150°C
Tensile Strength 200 psiCured 15 minutes at 150°C
Elongation at Break 75 %Cured 15 minutes at 150°C
 
Thermal PropertiesOriginal ValueComments
Thermal Conductivity 0.840 W/m-K
Maximum Service Temperature, Air 204 °C
Minimum Service Temperature, Air -55.0 °C
Flammability, UL94 V-1
@Thickness 1.50 mm
 V-0
@Thickness 3.00 mm
 
Processing PropertiesOriginal ValueComments
Cure Time 20.0 min
@Temperature 150 °C
 40.0 min
@Temperature 120 °C
Gel Time >= 1440 minCatalyzed
 
Descriptive Properties
ColorBrownUncatalyzed, QSil 266A
 BrownUncatalyzed, QSil 266B

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PACC2090 / 199478

Chemically Resistant adhesives

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