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Rulon Bearings

Master Bond EP21ARHTND Two component epoxy adhesive, sealant, coating and encapsulating system
Categories: Polymer; Thermoset; Epoxy; Epoxy Encapsulant, Unreinforced

Material Notes: Product Description: Master Bond EP21ARHTND is a two component epoxy resin system for high performance bonding, sealing and coating. It has a convenient 100 to 50 mix ratio by weight and is formulated to cure at ambient temperatures or more quickly at elevated temperatures. It has resistance to a wide array of chemicals, particularly to acids (a more detailed list appears below). It is resistant to sulfuric and hydrochloric acids. EP21ARHTND is 100% reactive and contains no solvents or diluents. It has very low linear shrinkage upon cure. Also, it has outstanding physical properties and electrical insulation values. EP21ARHTND can be used as an adhesive, sealant, coating, potting or encapsulating material. EP21ARHTND is especially useful for coating tanks and other vessels that may contain acids. It is serviceable over the wide temperature range of -60°F to +400°F. It adheres well to a wide variety of substrates including metals, glass, ceramics and many rubbers and plastics. EP21ARHTND is a smooth paste and is considered a non-drip type system. Parts A and B are amber. This epoxy compound is widely used in aerospace, electronic, electrical, chemical processing applications and in other applications where chemical resistance to acids is needed and a non-drip viscosity is helpful.

Product Advantages:

  • Smooth paste; contains no solvents or diluents
  • Versatile cure schedules; ambient temperature cures or fast elevated temperature cures
  • High bonding strength to both similar and dissimilar substrates
  • Wide temperature service capability from -60°F to +400°F
  • Good electrical insulator. Low viscosity. Ideal for potting and encapsulation
  • Outstanding chemical resistance, particularly to acids

Information provided by MasterBond®

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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Mechanical PropertiesMetricEnglishComments
Hardness, Shore D >= 75>= 75
Tensile Strength at Break >= 62.1 MPa
@Temperature 23.9 °C
>= 9000 psi
@Temperature 75.0 °F
Shear Strength 17.2 MPa2500 psiAl/Al, Tensile lap
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+14 ohm-cm>= 1.00e+14 ohm-cm
Dielectric Constant 3.8
@Frequency 60 Hz,
Temperature 25.0 °C
3.8
@Frequency 60 Hz,
Temperature 77.0 °F
Dielectric Strength 17.3 kV/mm
@Thickness 3.17 mm
440 kV/in
@Thickness 0.125 in
 
Thermal PropertiesMetricEnglishComments
CTE, linear 40.0 - 45.0 µm/m-°C22.2 - 25.0 µin/in-°F
Maximum Service Temperature, Air 204 °C400 °F
Minimum Service Temperature, Air -51.1 °C-60.0 °F
 
Processing PropertiesMetricEnglishComments
Cure Time  120 - 180 min
@Temperature 93.3 °C
2.00 - 3.00 hour
@Temperature 200 °F
 120 - 180 min
@Temperature 93.3 °C
2.00 - 3.00 hour
@Temperature 200 °F
Overnight at 75°F followed by
 1440 - 2880 min
@Temperature 22.2 °C
24.0 - 48.0 hour
@Temperature 72.0 °F
Pot Life 30 - 50 min30 - 50 min100 gram mass
Shelf Life 12.0 Month
@Temperature 23.9 °C
12.0 Month
@Temperature 75.0 °F
in original, unopened containers
 
Descriptive Properties
Mixing Ratio (A to B)100:50by weight

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PMASTB310 / 149557

Aluminum Castings

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