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Metal adhesives

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Master Bond EP40ND Two component epoxy
Categories: Polymer; Thermoset; Epoxy

Material Notes: Key Features:
  • Convenient handling
  • Good bond strength in shear and peel modes
  • Exceptional adhesion to polycarbonates and acrylics
  • Meets NASA low outgassing
Product Description: Master Bond EP40ND is a two part, room temperature curing epoxy for bonding, sealing, and coating. This non-drip system has a forgiving 1:1 mix ratio by weight or volume. It is formulated to cure readily at ambient temperatures or more rapidly at elevated temperatures. The optimum curing schedule is overnight at room temperature followed by 2-3 hours at 120°F to 150°F. EP40ND is 100% reactive and contains no solvents or diluents. EP40ND is a superb adhesive and bonds well to a variety of substrates including metals, ceramics, composites and plastics. It is most noteworthy for its affinity to bonding engineered plastics such as polycarbonates and acrylics. EP40ND is also capable of withstanding rigorous thermal cycling and shock. EP40ND is a reliable electrical insulator. It is a relatively low exothermic system and can be applied in thick sections. It withstands many common chemicals including water, oils, fuels, cleaning agents and some acids and bases. The color of Part A is translucent and Part B is amber. The service temperature range is -100°F to +250°F. There are many applications in electronics, opto-electronics and medical devices that utilize plastic substrates, which may be prone to stress cracking. It is important to select an adhesive that mitigates this possibility. EP40ND is an excellent candidate for these types of applications.

Product Advantages:

  • Convenient handling, 1:1 mix ratio
  • Long open time
  • Paste consistency
  • Good lap shear and outstanding peel strength
  • High elongation
  • Highly compatible with bonding polycarbonates and acrylics

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 50000 - 100000 cPPart A
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 50 - 60
Tensile Strength 800 - 1000 psi
Elongation at Break 80 - 90 %
Tensile Modulus 1000 - 1500 psi
Adhesive Bond Strength 1600 - 1800 psiTensile lap shear, Al to Al
Peel Strength 60.0 - 80.0 pliT-peel strength, steel to steel
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+15 ohm-cm
Dielectric Constant 4.1
@Frequency 60 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 55.0 - 60.0 µm/m-°C
Maximum Service Temperature, Air 250 °F
Minimum Service Temperature, Air -100 °F
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hour
@Temperature 48.9 - 65.6 °C
Optimal: overnight at 75°F, plus 2-3 hours at 120-150°F
 48.0 - 72.0 hour
@Temperature 23.9 °C
Option 2
Working Life 120 - 150 minafter mixing, 100 gram batch
Shelf Life 6.00 Monthin syringes, in original, unopened containers
 12.0 Monthin cans, in original, unopened containers
 
Descriptive Properties
Mixing ratio1:1 by weight or volumePart A to B
Viscositythixotropic pastePart B

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PMASTM5921 / 306810

Metal adhesives

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