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Metal adhesives

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Master Bond EP62-1AO Two component epoxy resin system
Categories: Polymer; Thermoset; Epoxy; Epoxy, Thermally Conductive

Material Notes: Key Features:
  • Long open time at room temperature
  • Cures rapidly at moderate temperatures
  • Superb physical strength profile
  • Thermally conductive, electrically insulating
Master Bond EP62-1AO is a two component, flowable epoxy system with an exceptionally long open time at ambient temperature. It has a forgiving 100 to 10 mix ratio by weight. The pot life of 100 grams is 12-14 hours. Typical cure schedule options are 4-6 hours at 140-160°F, 20-40 minutes at 175-200°F or 10-20 minutes at 250-300°F. To obtain optimum properties, post curing at 200-300°F for 2-4 hours is recommended. EP62-1AO gels at room temperature in about 24 hours and it will not reliquify when the elevated temperature is added to complete the cure. EP62-1AO bonds well to a wide variety of substrates including metals, glass, ceramics, composites and many plastics and rubbers. When compared to other thermally conductive epoxies, it is noteworthy that EP62-1AO has a better chemical resistance profile to acids, bases, and solvents. The service temperature range is -60°F to +450°F. The color of Part A is off white and Part B is dark brown. EP62-1AO is used for aerospace, electronic, optical, specialty OEM and related applications, particularly when high temperature resistance, thermal conductivity along with electrical insulation are required.

Product Advantages:

  • Forgiving 100 to 10 mix ratio by weight
  • Long working life
  • Versatile curing schedules
  • Very good chemical resistance
  • Wide service temperature range
  • Low coefficient of thermal expansion

Information provided by Master Bond Inc.

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 100 - 1000 cPPart B
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 80 - 90
Tensile Strength 5000 - 6000 psi
Elongation at Break 1.0 - 3.0 %
Tensile Modulus 600000 - 650000 psi
Adhesive Bond Strength 800 - 1000 psiTensile Lap Shear; Al/Al
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+14 ohm-cm
Dielectric Constant 7.8
@Frequency 60 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 18.0 - 21.0 µm/m-°C
Thermal Conductivity 9.00 - 10.0 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 232 °C
Minimum Service Temperature, Air -51.0 °C
Glass Transition Temp, Tg 120 - 125 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 4.00 hour
@Temperature 93.3 - 149 °C
Optimum post cure
 4.00 - 6.00 hour
@Temperature 60.0 - 71.1 °C
Option 3
 10.0 - 20.0 min
@Temperature 121 - 149 °C
Option 2
 20.0 - 40.0 min
@Temperature 79.4 - 93.3 °C
Option 1
Working Life 720 - 840 min
@Temperature 23.9 °C
After mixing, 100 gram batch
Shelf Life 6.00 Month
 
Descriptive Properties
Mixing ratio100:10 by weight
Viscositythixotropic pastePart A
 thixotropic pasteMixed

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PMASTM615 / 249011

Metal adhesives

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