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Metal adhesives

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Master Bond EP35 Two component, room temperature curing epoxy for bonding, sealing and coating
Categories: Polymer; Thermoset; Epoxy; Epoxy Adhesive

Material Notes: Key Features:
  • Good flow properties
  • Excellent machinability
  • High temperature resistance
  • Withstands 1,000 hours 85°C/85% RH
Master Bond EP35 is a two part, room temperature curing epoxy system used for bonding, sealing and coating featuring high temperature resistance. It has superior dimensional stability and is easier to machine compared to other epoxies. It has a 100 to 70 mix ratio by weight and a very convenient one to one ratio by volume. This system cures readily at room temperature or more rapidly at elevated temperatures. To optimize its properties, the recommended cure schedule is overnight at room temperature followed by a post cure at 150-200°F for 2-3 hours. Once cured EP35 has an exceptionally high temperature resistance, serviceable up to +450°F. It resists a range of chemicals including water, oils, fuels and many acids and bases. This system bonds well to a large variety of substrates including metal, glass, ceramics and many rubbers and plastics. It is a reliable electrical insulator. EP35 is 100% reactive and does not contain any diluents or solvents. The color of Part A is gray, Part B is amber. It is widely used in aerospace, electronic, electrical and specialty OEM type applications.

Product Advantages:

  • Convenient mixing: one to one ratio by volume
  • High temperature resistance up to +450°F
  • Excellent dimensional stability
  • Easily machinable

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 1500 - 3000 cPPart B
 100000 - 150000 cPPart A
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 80 - 90
 85
@Treatment Temp. 85.0 °C,
Time 3.60e+6 sec
85% RH
Tensile Strength 9000 - 10000 psi
Tensile Modulus 400000 - 450000 psi
Flexural Strength 42500 psiAfter Radiation Dosage of 2E+09 Rads
 45900 psiNo Radiation Exposure
 46500 psiAfter Radiation Dosage of 7E+09 Rads
 51700 psiAfter Radiation Dosage of 1E+10 Rads
 54500 psiAfter Radiation Dosage of 3E+09 Rads
Flexural Modulus 154000 kg(f)/cm²No Radiation Exposure
 159000 kg(f)/cm²After Radiation Dosage of 2E+09 Rads
 162000 kg(f)/cm²After Radiation Dosage of 7E+09 Rads
 164000 kg(f)/cm²After Radiation Dosage of 3E+09 Rads
 167000 kg(f)/cm²After Radiation Dosage of 1E+10 Rads
Adhesive Bond Strength 2000 - 2200 psiTensile Lap Shear; Al/Al
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+12 ohm-cm
 
Thermal PropertiesOriginal ValueComments
Maximum Service Temperature, Air 232 °C
Minimum Service Temperature, Air -51.0 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 1.00 - 2.00 hour
@Temperature 93.3 °C
Option 2
 2.00 - 4.00 hour
@Temperature 65.6 °C
Optimum cure schedule: overnight at room temperature followed by 2-4 hours at 150°F
 48.0 - 72.0 hour
@Temperature 23.9 °C
Option 1
Working Life 60.0 - 90.0 min
@Temperature 23.9 °C
After mixing, 100 gram batch
Shelf Life 12.0 Month
 
Descriptive Properties
Mixing ratio100:70 by weight

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PMASTM609 / 249005

Metal adhesives

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