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Metal adhesives
Master Bond EP21TP-2NV Two component, epoxy polysulfide
Categories: Polymer; Thermoset; Epoxy

Material Notes: Key Features:
  • One to one mix ratio
  • Tough, flexible bonds
  • Withstands thermal cycling
  • Room temperature curing
  • Chemical resistance to fuels, oils, hydrocarbons and hydraulic fluids
  • Fully complies with RoHS regulations
Product Description: Master Bond EP21TP-2NV is a two component epoxy polysulfide system formulated to cure at room temperature or more rapidly at elevated temperatures, with a one to one mix ratio by weight or volume. It’s a versatile material that can be used as an adhesive, coating, encapsulant and especially as a sealant. It resists a wide array of chemicals including water, gasoline, fuels, oils, hydrocarbons, hydraulic fluids and many acids and bases. Significantly, unlike many chemical resistant epoxy based materials, this system has excellent toughness. These properties enable EP21TP-2NV to withstand rigorous thermal cycling as well as mechanical and thermal shocks. It bonds well to a variety of substrates, including metals, glass, ceramics and many rubber and plastic materials. The cured system has excellent electrical insulation properties. Its service temperature range is -80°F to +250°F. One unusual feature of EP21TP-2NV is the influence of adding heat to the curing cycle. When cured at room temperature the Shore D hardness is 60-65; when cured at 200°F for 2-3 hours, its hardness is 15-20 Shore D. Therefore, to obtain the optimum properties, EP21TP-2NV should be cured at room temperature. The color of Part A is tan and Part B is amber, although, other colors are available. Polysulfide based systems, including EP21TP-2NV, have been used as fuel tank sealants and as potting compounds for electrical connectors exposed to fuels, oils and lubricants, for many years now. EP21TP-2NV is an excellent choice for use as a sealant, adhesive or potting system for aerospace, electronic, electrical, and specialty OEM where room temperature curing, toughness and chemical resistance to fuels and related compounds are desirable.

Product Advantages:

  • Easy mixing: forgiving 1:1 mix ratio, weight or volume
  • Ambient temperature curing imparts optimal chemical resistance and hardness
  • Produces tough bonds; resistant to thermal cycling
  • Good hardness and elongation
  • Superior electrical insulator
  • Superb resistance to fuels and related chemicals

Information provided by Master Bond.

Vendors:
Available Properties
  • Viscosity, Part B
  • Viscosity, Part A
  • Hardness, Shore D
  • Tensile Strength
  • Elongation at Break
  • Tensile Modulus
  • Adhesive Bond Strength, Tensile lap shear, Al to Al
  • Volume Resistivity
  • Dielectric Constant
  • CTE, linear
  • Maximum Service Temperature, Air
  • Minimum Service Temperature, Air
  • Cure Time
  • Working Life, after mixing, 100 gram batch
  • Shelf Life, in original unopened containers
  
Property Data

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Manufacturer Notes:
Master Bond Inc.

Category Notes
Plastic

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Metal adhesives
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