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Master Bond adhesives

Master Bond Supreme 42HT-2 Toughened Epoxy Resists Thermal Cycling
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive

Material Notes: Description: Master Bond Supreme 42HT-2 is a solvent-free, toughened, two part epoxy system featuring heat and chemical resistance. It has good thermal cycling capabilities and is ideal for bonding, sealing and encapsulating dissimilar substrates. Supreme 42HT-2 has a mix ratio of 100 to 40 by weight or 100 to 50 by volume. It adheres well to a wide variety of substrates including metals, many plastics, ceramics and glass. It is serviceable from -65°F to +425°F. The color of Part A is tan to brown and the color of Part B is amber. The cured epoxy has good electrical insulation properties. Most noteworthy, it will resist a wide variety of chemicals including many acids, bases, solvents, fuels and oils. It can be used in many industries including aerospace, electronic, chemical, OEM and many other fields. To optimize its product properties, the best cure schedule for Supreme 42HT-2 is overnight at room temperature followed by a few hours at 150-200°F. A paste, non-drip version called Supreme 42HT-2ND2 is also available. Additionally, this product will have only minimal flow if heat is added during curing.

Product Advantages:

  • Non-critical mix ratio: 100 to 40 by weight and 100 to 50 by volume
  • Easy application with conventional equipment
  • Solvent-free
  • Convenient cure schedules at both ambient and elevated temperatures
  • Excellent chemical resistance to acids, bases, fuels, oils and solvents
  • Good thermal stability up to +425°F
  • Longer working life
  • Good thermal cycling capabilities
Key Features
  • Toughened
  • Good thermal cycling capabilities
  • High temperature resistant
  • Chemical resistant

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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Physical PropertiesMetricEnglishComments
Viscosity 30 - 70 cP30 - 70 cPPart B
 75000 - 125000 cP75000 - 125000 cPPart A
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D >= 75>= 75
Tensile Strength at Break >= 68.9 MPa>= 10000 psi
Tensile Modulus >= 2.41 GPa>= 350 ksi
Shear Strength >= 13.8 MPa>= 2000 psiTensile lap, Al to Al
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+14 ohm-cm>= 1.00e+14 ohm-cm
Dielectric Constant 4.5
@Frequency 60 Hz,
Temperature 25.0 °C
4.5
@Frequency 60 Hz,
Temperature 77.0 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear 45.0 - 50.0 µm/m-°C25.0 - 27.8 µin/in-°F
Maximum Service Temperature, Air 218 °C425 °F
Minimum Service Temperature, Air -53.9 °C-65.0 °F
 
Processing PropertiesMetricEnglishComments
Cure Time  120 - 180 min
@Temperature 93.3 °C
2.00 - 3.00 hour
@Temperature 200 °F
 2880 - 4320 min
@Temperature 23.9 °C
48.0 - 72.0 hour
@Temperature 75.0 °F
Pot Life 60 - 90 min60 - 90 min100 gram mass
Shelf Life 12.0 Month
@Temperature 23.9 °C
12.0 Month
@Temperature 75.0 °F
in original unopened container
 
Descriptive Properties
Mixing Ratio (A to B)100:40by weight

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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PMASTB358 / 149605

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