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Elmet Technologies

Epoxies, Etc 20-2370 Unfilled Low Durometer Urethane Elastomers
Categories: Polymer; Thermoset; Polyurethane, TS

Material Notes: Description: This two component urethane series are low durometer (30-90 Shore A), potting, casting, and encapsulating compounds. They are unfilled materials engineered to provide excellent hydrolytic stability and low moisture permeability. They have outstanding thermal cycling properties, low glass transition temperatures and low embedment stress to sensitive electronic components. These unique urethane formulations maintain their integrity over a wide operating temperature range. The low glass transition temperature of approximately -70?C makes these urethanes ideal for low temperature potting applications. These systems exhibit very little hardness increase when cooled to -72?C.

Features:

  • Maintains flexibility at low temperatures
  • Thermal cycling stability
  • Excellent electrical insulation
  • Chemical resistance
  • Low stress on sensitive components
  • Hydrolytic stability

Information provided by Epoxies, Etc

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Physical PropertiesMetricEnglishComments
Specific Gravity 0.900 g/cc0.900 g/ccPolyol
 1.20 g/cc1.20 g/ccIso
Viscosity 4300 cP4300 cPMixed
Storage Temperature 21.0 - 29.0 °C69.8 - 84.2 °F
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 7070
Tensile Strength 5.69 MPa825 psi
Elongation at Break 250 %250 %
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 6.00e+16 ohm-cm6.00e+16 ohm-cm
Surface Resistance >= 1.00e+16 ohm>= 1.00e+16 ohm
Dielectric Constant 4.5
@Frequency 1000 Hz
4.5
@Frequency 1000 Hz
 
Thermal PropertiesMetricEnglishComments
CTE, linear 228 µm/m-°C127 µin/in-°F
Maximum Service Temperature, Air 125 °C257 °F
Minimum Service Temperature, Air -40.0 °C-40.0 °F
Glass Transition Temp, Tg -70.0 °C-94.0 °F
 
Processing PropertiesMetricEnglishComments
Pot Life 60.0 min
@Load 0.100 kg
60.0 min
@Load 0.221 lb
Shelf Life 12.0 Month12.0 Month
 
Descriptive Properties
ColorBlack
Mix Ratio100:25P:I

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

PFEPOX017 / 316694

Ensinger PEI

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