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Chemically Resistant adhesives

Epoxy Technology EPO-TEK® T905BN-4 Thermally Conductive Epoxy
Categories: Polymer; Thermoset; Epoxy; Epoxy, Thermally Conductive

Material Notes: Product Description: EPO-TEK® T905BN-4 is a two component, room temperature cure, thermally conductive epoxy for general adhesive bonding, sealing, potting and encapsulation applications

Advantages & Application Notes:

  • A moderate viscosity resin with flowing properties enables potting of cavities, packages and housings.
  • Contains a coarse grade of filler, which needs to be taken into account in all bonding, sealing and potting applications.
  • Pure white color after cure allows for easy inspection by operators on common electronic packaging surfaces.
  • Versatility in cure: 23ºC and 100ºC ambient, box oven or tunnel oven processes.
  • Suggested Applications:
    • Hybrids: thermally conductive adhesive bonding ceramics and metals
    • Electronics:
      • General PCB level potting and adhesive applications. Bonding metal and composite heat sinks to PCBs or SMDs.
      • Transformers: potting of Cu coils, magnets, inductors and other SMDs into their respective casing.
    • Medical Devices
      • Heat sinking of x-ray and ultrasound circuits via adhesive and potting processes.

Information Provided by Epoxy Technology

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 1.16 g/cc1.16 g/ccPart B
 1.63 g/cc1.63 g/ccPart A
Particle Size <= 300 µm<= 300 µm
Viscosity 12000 - 18000 cP
@Temperature 23.0 °C
12000 - 18000 cP
@Temperature 73.4 °F
20 rpm
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 7979
Tensile Modulus 7.943 GPa1152 ksiStorage
Shear Strength 9.735 MPa1412 psiLap
 >= 11.7 MPa>= 1700 psiDie
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 4.00e+14 ohm-cm>= 4.00e+14 ohm-cm
Dielectric Constant 3.82
@Frequency 1000 Hz
3.82
@Frequency 1000 Hz
Dissipation Factor 0.012
@Frequency 1000 Hz
0.012
@Frequency 1000 Hz
 
Thermal PropertiesMetricEnglishComments
CTE, linear 24.0 µm/m-°C13.3 µin/in-°FBelow Tg
 120 µm/m-°C66.7 µin/in-°FAbove Tg
Thermal Conductivity 1.78 W/m-K12.4 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 200 °C392 °FContinuous
 300 °C572 °FIntermittent
Minimum Service Temperature, Air -55.0 °C-67.0 °FContinuous
 -55.0 °C-67.0 °FIntermittent
Glass Transition Temp, Tg >= 50.0 °C>= 122 °FDynamic Cure 20—200°C /ISO 25 Min; Ramp 40—200°C @ 20°C/Min
Decomposition Temperature 350 °C662 °FDegradation Temperature
 
Processing PropertiesMetricEnglishComments
Cure Time  60.0 min
@Temperature 80.0 °C
1.00 hour
@Temperature 176 °F
Minimum Bond Line
 1440 min
@Temperature 23.0 °C
24.0 hour
@Temperature 73.4 °F
Minimum Bond Line
Pot Life 60 min60 min
Shelf Life 12.0 Month
@Temperature 25.0 °C
12.0 Month
@Temperature 77.0 °F
 
Descriptive Properties
ColorLight MauvePart B
 WhitePart A
ConsistencyGranular paste
Mix Ratio by Weight100:25
Number of ComponentsTwo
Thixotropic Index2.58
Weight Loss0.18%200°C
 0.64%250°C
 1.44%300°C

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.

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PPOXYT100 / 141139

Chemically Resistant adhesives

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