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Master Bond EP42HT-2 Epoxy Adhesive Resists Sterilization
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive

Material Notes: Description: Master Bond Polymer System EP42HT-2 is a room temperature curable, two component epoxy adhesive, sealant, coating and casting material featuring high temperature resistance along with outstanding chemical resistance. While EP42HT-2 is a superior adhesive, sealant and coating, it is also relatively low in exotherm and castable up to 2-3 inches thick. EP42HT-2 cures readily at ambient temperatures or more quickly at elevated temperatures. A desirable cure schedule to optimize its properties is overnight at room temperature followed by 2-4 hours at 150-200°F. EP42HT-2 has an easy to use 100 to 40 mix ratio by weight or 100 to 50 by volume. It is resistant to a wide variety of acids, bases, solvents, fuels, oils and salts. It also has excellent electrical insulation properties. Its service temperature range is from -60°F to 450°F. EP42HT-2 is used in electronic, electrical, fiber-optic, optical and OEM type applications. The color of Part A is clear and Part B is amber. The system has superior optical transmission properties, particularly in thinner sections, as well as a high index of refraction for an epoxy.

Product Advantages:

  • Non-critical 100 to 40 mix ratio by weight or 100 to 50 by volume
  • Easy application: only contact pressure required while curing; adhesive spreads readily
  • Excellent chemical resistance to acids, alkalis and many solvents
  • Castable up to thicknesses of 2-3 inches
  • Outstanding physical strength properties
  • Superior optical transmission properties
  • Contains no solvents
Key Features
  • Heat, chemical and steam resistance
  • Cures at ambient or elevated temperatures
  • Can be used for bonding, sealing, coating, casting & potting applications
  • Serviceable from -60°F to 450°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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Physical PropertiesOriginal ValueComments
Viscosity 30 - 70 cP
@Temperature 23.9 °C
Part B
 1000 - 1800 cP
@Temperature 52.2 °C
Part A
 55000 - 110000 cP
@Temperature 23.9 °C
Part A
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D >= 75
Tensile Strength at Break >= 12000 psi
Elongation at Break <= 5.0 %
Tensile Modulus 350000 - 400000 psi
Shear Strength >= 2000 psiTensile lap, Al to Al
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+14 ohm-cm
Dielectric Constant 3.8
@Frequency 60 Hz,
Temperature 25.0 °C
 
Thermal PropertiesOriginal ValueComments
CTE, linear 35.0 - 40.0 µm/m-°C
Maximum Service Temperature, Air 450 °F
Minimum Service Temperature, Air -60.0 °F
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.63
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hour
@Temperature 93.3 °C
 48.0 - 72.0 hour
@Temperature 23.9 °C
Pot Life 45 - 75 min100 gram batch
Shelf Life 12.0 Month
@Temperature 23.9 °C
in original unopened container
 
Descriptive Properties
Mixing Ratio (A to B)100:40by weight
 100:50by volume

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PMASTB397 / 149644

Specialty Compounds RTP Company

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