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Master Bond adhesives

Master Bond EP21TDCHTND Versatile, toughened two component epoxy for bonding, sealing and coating
Categories: Polymer; Thermoset; Epoxy; Epoxy Encapsulant, Unreinforced

Material Notes: Product Description: Master Bond EP21TDCHTND is a two component epoxy adhesive, sealant and coating featuring high performance, versatility and exceptional user friendliness. It has a very forgiving and convenient one to one mix ratio by weight or volume. It cures at ambient temperatures that can be accelerated by adding heat, with the optimum cure schedule being overnight at room temperature, followed by 1-2 hours at 150-200°F. This non-drip viscosity system bonds well and with minimum shrinkage to a wide variety of substrates including metals, composites, glass, ceramics and many plastics and rubbers. EP21TDCHTND combines good dimensional stability with toughness. The forgiving nature of EP21TDCHT allows it to be used for bonding dissimilar substrates that might have different coefficients of thermal expansion, conferring upon it top notch resistance to rigorous thermal cycling as well as vibration and shock. Additionally, it is a superior electrical insulator and has good chemical resistance against water, fuels and oils. Its wide service temperature range is from -100°F to +350°F. Both Parts A and B are amber in color. It can be used in aerospace, electrical, electronic, medical, specialty OEM and a wide variety of other industries as well.

Product Advantages:

  • Convenient mixing: non-critical equal weight or volume ratio
  • User friendly, easy to apply, smooth paste along with convenient curing schedules
  • Impressive adhesion to a wide variety of substrates
  • Superior toughness, can withstand harsh thermal cycling while retaining dimensional stability
  • Dependable electrical insulation values
  • Robust temperature resistance profile from -100°F to +350°F

Information provided by MasterBond®

Vendors: Master Bond is a leading manufacturer of adhesives, sealants, coatings and potting compounds. Master Bond’s vast product line consists of over 3,000 epoxy, polyurethane, silicone, cyanoacrylate and latex adhesives that vary in viscosity, cure speed, strength, chemical resistance, electrical properties, etc. Our custom adhesives offer design flexibility and provide excellent bonding performance. Visit www.masterbond.com.

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Mechanical PropertiesMetricEnglishComments
Hardness, Shore D >= 60>= 60
Tensile Strength at Break >= 37.9 MPa
@Temperature 23.9 °C
>= 5500 psi
@Temperature 75.0 °F
Tensile Modulus 1.38 - 1.72 GPa
@Temperature 23.9 °C
200 - 250 ksi
@Temperature 75.0 °F
Shear Strength >= 18.6 MPa>= 2700 psiAl/Al, Tensile lap
Peel Strength 4.38 kN/m25.0 pliT-peel
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+14 ohm-cm>= 1.00e+14 ohm-cm
Dielectric Constant 3.7
@Frequency 60 Hz,
Temperature 25.0 °C
3.7
@Frequency 60 Hz,
Temperature 77.0 °F
 
Thermal PropertiesMetricEnglishComments
Maximum Service Temperature, Air 177 °C350 °F
Minimum Service Temperature, Air -73.3 °C-100 °F
 
Processing PropertiesMetricEnglishComments
Cure Time  120 - 180 min
@Temperature 93.3 °C
2.00 - 3.00 hour
@Temperature 200 °F
 720 min
@Temperature 23.9 °C
12.0 hour
@Temperature 75.0 °F
Followed by 2-3 hours at 150-200°F (Optimum Cure Schedule)
 2880 - 4320 min
@Temperature 23.9 °C
48.0 - 72.0 hour
@Temperature 75.0 °F
Pot Life 90 - 120 min90 - 120 min100 gram mass
Shelf Life 12.0 Month
@Temperature 23.9 °C
12.0 Month
@Temperature 75.0 °F
in original unopened containers
 
Descriptive Properties
Mixing Ratio (A to B)1:1by weight or volume

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.

PMASTB324 / 149571

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