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Metal adhesives

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Master Bond EP46HT-2 Two Component, Heat Resistant Epoxy System
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive; Epoxy, High Temperature

Material Notes: Key Features:
  • Glass transition temperature (Tg) of 220°C
  • Requires oven curing
  • Long working life
  • Superior adhesion to many substrates
  • Service temperature range from -100°F to 550°F
  • Withstands prolonged exposure to hostile environments
Product Description: Master Bond EP46HT-2 is a versatile two component epoxy system that can be used for bonding, sealing, coating and casting. It is most prominent for its temperature resistance along with the capability of withstanding aggressive chemicals. Its service temperature range extends from -100°F to +550°F. It is 100% reactive and does not contain any solvents or diluents. It is formulated to cure rapidly and requires a minimum curing temperature of 250°F; although a variety of cure schedules are possible. It should be noted that the mix ratio is a very forgiving 100 to 30-35 parts by weight. Upon curing, EP46HT-2 has a wide array of impressive physical and mechanical properties. It bonds well to a variety of substrates including metals, composites, ceramics, glass, rubbers and many plastics. One of the more noteworthy attributes of this system is its chemical resistance profile, which includes the ability to withstand many acids, bases, oils, fuels, hydrocarbons and solvents. It is also a very good electrical insulator. Unlike the EP46HT-1 product series, this line is not exothermic and can be used for potting and encapsulation. The color of Part A is clear; the color of Part B is brown. Master Bond EP46HT-2 is primarily used in specialty aerospace, electronic, petrochemical and OEM applications where high temperature resistance and the ability to withstand hostile chemicals is desirable.

Product Advantages:

  • Very forgiving mix ratio
  • Long open time at room temperature
  • Excellent temperature resistance and thermal stability
  • Capable of withstanding disruptive chemicals
  • High bonding strength to a wide variety of substrates
  • Top notch electrical insulation properties

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 50 - 350 cPPart B
 12000 - 20000 cPmixed
 60000 - 110000 cPPart A
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D >= 75
Tensile Strength >= 10000 psi
Tensile Modulus >= 400000 psi
Adhesive Bond Strength >= 2500 psiTensile lap, Aluminum to Aluminum
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+16 ohm-cm
Dielectric Strength 450 V/mil
@Thickness 3.17 mm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 30.0 - 35.0 µm/m-°C
Maximum Service Temperature, Air 550 °F
Minimum Service Temperature, Air -100 °F
Glass Transition Temp, Tg 220 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hourPost cure for optimum properties at 350-400°F
 3.00 - 4.00 hour
@Temperature 121 - 149 °C
Working Life >= 1440 minAfter mixing, 100 g batch
Shelf Life 6.00 Month
@Temperature <=23.9 °C
in original, unopened containers
 
Descriptive Properties
Mixing Ratio100:30-35 by weightParts A to B

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PMASTM886 / 185479

Metal adhesives

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