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Metal adhesives

Master Bond EP24 Fast Curing Two Component Epoxy System
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive

Material Notes: Key Features:
  • Fast setting
  • Easy processing
  • Outstanding physical properties
  • Impressive dimensional stability
Product Description: Master Bond EP24 is a two component, room temperature curing epoxy adhesive, sealant, coating, and encapsulating system featuring outstanding physical strength properties, convenient handling and a relatively swift setting time. This easy to apply, moderate viscosity system has a forgiving one to one mix ratio by weight or by volume. EP24 bonds well to a variety of substrates including metals, composites, glass, ceramics and many rubbers and plastics. EP24 has an attractive curing profile as it has a longer working life than a 5 minute epoxy, but is faster setting than more standard two part epoxies. Additionally, it has commendable dimensional stability and very low shrinkage upon curing. It has good resistance to many chemicals including water, oils and fuels. It offers very fine electrical insulation properties. The service temperature range is -60°F to +250°F. EP24 is quite good in conjunction with thermal cycling as well as impact and shock. This multifaceted system can be used in aerospace, electronic, optical, OEM and repair applications, among others.

Product Advantages:

  • Convenient mixing: non-critical, one to one mix ratio by weight or volume.
  • Moderate viscosity; very easy to apply.
  • Low shrinkage upon curing; noteworthy dimensional Stability
  • Dependable electrical insulation properties
  • Good balance of open time and handling time
  • Proficient adhesive, bonds well to a wide variety of substrates

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 PropertiesMetricEnglishComments
Viscosity 25000 - 50000 cP25000 - 50000 cPPart A
 40000 - 60000 cP40000 - 60000 cPPart B
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D >= 70>= 70
Tensile Strength >= 55.2 MPa>= 8000 psi
Tensile Modulus 2.41 - 2.76 GPa350 - 400 ksi
Adhesive Bond Strength >= 17.9 MPa>= 2600 psiTensile lap, Aluminum to Aluminum
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+14 ohm-cm>= 1.00e+14 ohm-cm
Dielectric Constant 3.1
@Frequency 60 Hz
3.1
@Frequency 60 Hz
Dielectric Strength 17.3 kV/mm
@Thickness 3.17 mm
440 kV/in
@Thickness 0.125 in
 
Thermal PropertiesMetricEnglishComments
CTE, linear 45.0 - 50.0 µm/m-°C25.0 - 27.8 µin/in-°F
Maximum Service Temperature, Air 121 °C250 °F
Minimum Service Temperature, Air -51.1 °C-60.0 °F
 
Processing PropertiesMetricEnglishComments
Cure Time  60.0 - 120 min
@Temperature 93.3 °C
1.00 - 2.00 hour
@Temperature 200 °F
 1440 - 2880 min
@Temperature 23.9 °C
24.0 - 48.0 hour
@Temperature 75.0 °F
Working Life 15.0 - 25.0 min15.0 - 25.0 minAfter mixing, 100 g batch
Shelf Life 12.0 Month
@Temperature <=23.9 °C
12.0 Month
@Temperature <=75.0 °F
in original, unopened containers
 
Descriptive Properties
Cure ScheduleOvernight at 75°Fplus 1 hour at 150-200°F, Optimum cure
Mixing Ratio1:1 by weight or volumeParts A to B

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