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Home > Focus on! > Thermal Interface Materials > RTV Rubber: Condensation-cure RTV Rubber

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Oil Compounds High-hardness Thermal Interface Silicone Rubber Thermal Interface Silicone Soft Pads / Ultra Soft Pads Thermal Interface Phase Change Materials Double Sided Thermal Interface Silicone Tapes Condensation-cure RTV Rubber Addition-cure Liquid Silicone Rubber

RTV Rubber

Condensation-cure RTV Rubber
Shin-Etsu condensation curing silicone rubbers are one component type adhesives compounded with a special filler to enhance thermal conductivity. These materials are in paste form before curing. When exposed to the air, they start to cure while generating a small amount of cure by-product. These adhesive sealants adhere to many substrates and cure to become elastic rubber with excellent thermal conductivity.

Main Features
  • Excellent thermal conductivity a Easy to handle.
  • Excellent adhesion a Superior electrical properties.
  • These materials exhibit outstanding heat and cold resistance, and show stable properties in a wide temperature range from -40℃ to 180℃.
Primary Applications
  • For sealing and thermal conductivity of electrical and electronic components
  • For sealing of thermocouples
  • Heat-dissipation for optical pickup diodes aFor sealing of heat exchangers
  • Better performance can be obtained when these materials are used as a heat bonding material for the joints
 Application of RTV rubber
Application of RTV rubber
General Properties

Type

One-component adhesive type, Condensaton cure
Item Grade
KE-4901-W KE-3493 KE-3466 KE-3467
Cure Type (by-product gas) Alcohol Acetone Acetone Acetone
Appearance White White White White
Viscosity Pa·s
Paste Paste 50 100
Density at 23℃ g/cm3
1.59 1.46 2.80 2.90
Hardness Durometer A 53 73 88 91
Tensile Strength MPa
2.6 - 3.1 3.6
Elongation at break %
120 - 30 30
Volume Resistivity TΩ·m
3.4 1.0 2.9 5.9
Thermal Conductivity* W/m·K
0.75 1.6 1.9 2.4
Dielectric Constant 50Hz 3.8 4.2 5.9 4.6
Dielectric Dissipation Factor 50Hz 0.18 0.002 0.0047 0.004
Dielectric Breakdown Strength kV (1.0mm)
30 35 24 25
Tack Free Time min
8 1 7 4
Lap Shear Strength MPa
1.3 (Aluminum) 0.8 (Aluminum) 0.5 (Aluminum) 0.5 (Aluminum)
Flammability UL94 V-0 - V-1 V-0
Low Molecular Siloxane Content ΣD3-D10 ppm
< 300 < 300 < 300 < 300
Curing conditions: 23℃±2℃, 50±5% RH x 7days
* Measured with hot-wire method.		 (Not specified values)
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