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Metal adhesives

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Master Bond EP35AOLV Two component, thermally conductive, electrically isolating epoxy system
Categories: Polymer; Thermoset; Epoxy; Epoxy, Thermally Conductive

Material Notes: Key Features:
  • Good flow properties
  • High temperature resistance
  • Withstands aggressive chemicals
  • High compressive strength
Product Description: Master Bond EP35AOLV is a two component thermally conductive, electrically isolating epoxy for bonding, sealing and potting. The mix ratio is a forgiving 100 to 50 by weight with both Parts A and B being highly flowable. The working time is exceptionally long, 12-24 hours at room temperature. EP35AOLV requires an elevated temperature cure with the optimum being 2-3 hours at 300°F followed by a post cure of 3-4 hours at 300-350°F. This filled system is highly dimensionally stable and has low shrinkage upon curing. The epoxy bonds well to a wide variety of substrates, such as metals, glass, ceramics, composites and many plastics. Its forte is its ability to withstand high temperature and pressure in an aggressive chemical environment, including those found in down hole. The filler imparts high compressive strength to the system. The service temperature range extends from -60°F to +500°F. The color of Part A is gray and Part B is off-white. EP35AOLV can be used in aerospace, electronic, specialty OEM, oil and gas processing, and other industries where high temperature and chemical resistance along with thermal conductivity are required.

Product Advantages:

  • Forgiving 2:1 mix ratio by weight
  • Moderate viscosity, flows nicely
  • Long open time at room temperature
  • Conducts heat but not electricity
  • Good glass transition temperature and high dimensional stability

Information provided by Master Bond.

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 10000 - 70000 cPPart B
 50000 - 90000 cPMixed
 100000 - 200000 cPPart A
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 85 - 95
Tensile Strength 4000 - 6000 psi
Elongation at Break <= 5.0 %
Tensile Modulus >= 1.00e+6 psi
Compressive Strength 24000 - 26000 psi
Adhesive Bond Strength 900 - 1100 psiTensile lap shear, Al to Al
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+14 ohm-cm
Dielectric Constant 4.6
@Frequency 60 Hz
 
Thermal PropertiesOriginal ValueComments
Thermal Conductivity 7.00 - 8.00 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 500 °F
Minimum Service Temperature, Air -60.0 °F
Glass Transition Temp, Tg 165 - 170 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hour
@Temperature 149 °C
Optimal: followed by 3-4 hours at 300-350°F
 2.00 - 3.00 hour
@Temperature 149 °C
Option 3
 4.00 - 5.00 hour
@Temperature 121 °C
Option 2
Working Life 12.0 - 24.0 hourafter mixing, 100 gram batch
Shelf Life 6.00 - 12.0 Monthin original unopened containers
 
Descriptive Properties
Mixing ratio100:50 by weightPart A to B

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PMASTM5920 / 306809

Metal adhesives

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