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Chemically Resistant adhesives

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Master Bond EP21TDC-2AN Two Component, Flexibilized, Highly Thermally Conductive, Electrically Insulating Epoxy Resin
Categories: Polymer; Thermoset; Epoxy; Epoxy Encapsulant, Unreinforced

Material Notes: Product Description: Master Bond Polymer System EP21TDC-2AN is a two component flexible epoxy resin compound for high performance bonding, sealing, coating, and encapsulation. This system’s thermal conductivity is formulated to fully cure at ambient temperature or more quickly at elevated temperatures with an easy to handle one to three mixing ratio by weight. The cured compound exhibits a high elongation (greater than 25%); good for a thermally conductive epoxy. After mixing EP21TDC-2AN generates a very low exotherm, which allows for a long working life. This epoxy compound exhibits good tensile shear and peel strength for bonding and sealing. It adheres well to a wide variety of substrates including metals, glass, ceramics, rubbers and many plastics. This cured adhesive is an excellent electrical insulator with superior chemical resistance to water, fuels and many solvents. It excels at withstanding thermal shock, thermal cycling and mechanical shock. This compound features a service temperature range of 4K to 250°F and has been successfully employed in a number of cryogenic applications. Master Bond EP21TDC-2AN is a versatile system that offers the structural benefits of an epoxy, yet incorporates flexibility and thermal conductivity. It is widely used in the electronic, electro-optical and related industries. The color of Part A is light gray; Part B is gray.

Product Advantages:

  • Convenient mixing: non-critical one to three mix ratio by weight
  • Easy application: product spreads evenly and smoothly.
  • Desirably long working life.
  • Versatile cure schedules: ambient temperature cures or fast elevated temperature cures.
  • High thermal conductivity combined with good electrical insulation properties.
  • High peel strength and elongation.
  • Excellent flexibility; exceptional thermal shock and chemical resistance.
  • Good bonding properties to similar and dissimilar substrates; superb impact resistance.
  • Cryogenically serviceable down to 4K.

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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Physical PropertiesOriginal ValueComments
Viscosity 45000 - 100000 cPPart A
 300000 - 700000 cPPart B
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 30 - 40
Tensile Strength at Break >= 3000 psi
@Temperature 23.9 °C
Shear Strength >= 800 psiAl/Al, Tensile
Peel Strength >= 15.0 pliT-peel
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+14 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 80.0 - 90.0 µm/m-°C
Thermal Conductivity 22.0 - 24.0 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 250 °F
Minimum Service Temperature, Air -452 °F
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hour
@Temperature 93.3 °C
 48.0 - 72.0 hour
@Temperature 23.9 °C
Pot Life >= 60 min100 gram mass
Shelf Life 6.00 Month
@Temperature 23.9 °C
in original unopened containers
 
Descriptive Properties
Mixing Ratio (A to B)1:3by 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 go back to viewing the property data in MatWeb's normal format.

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PMASTB317 / 149564

Chemically Resistant adhesives

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