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Flame Retardant adhesives

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Master Bond EP21FRNS-2 Two Component Flame Retardant Epoxy
Categories: Polymer; Thermoset; Epoxy; Epoxy Encapsulant, Unreinforced

Material Notes: Key Features:
  • Meets UL 94V-0 flame retardant specification
  • Features a non-halogen filler
  • Produces very low smoke levels
  • Cures at room temperature
Product Description: Master Bond EP21FRNS-2 is a two component, room temperature curing, flame retardant compound for potting, encapsulating and casting. Particularly noteworthy are its low smoke generation and that it contains a non-halogenated filler. It has a convenient one to one mix ratio by weight. EP21FRNS-2 offers exceptional durability, toughness and strength. It is remarkably resistant to thermal cycling and many chemicals including water, fuels, lubricants, acids, among others. As per the UL 94V-0 specification, this system is serviceable over the wide temperature range of -51°C to +90°C. It bonds well to metals, glass, ceramics and many plastics. To optimize its properties, the best cure schedule is overnight at room temperature followed by 2-3 hours at 150-200°F. Its electrical insulation properties are excellent. This compound is color coded for easy mixing; the color of Part A is black and the color of Part B is off white. This formulation is far more user friendly when compared to standard flame resistant epoxy systems. EP21FRNS-2 has wide applicability in the computer, aerospace and related industries.

Product Advantages:

  • Convenient mixing: one to one mix ratio by weight
  • Good flow properties; ideal for electronic potting and Encapsulation
  • Versatile cure schedules: ambient temperature cures or faster cures at elevated temperatures
  • High bond strength to a wide variety of substrates
  • Superior durability and thermal shock resistance; excellent resistance to fuels and lubricants

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 30000 - 45000 cPPart B
 40000 - 70000 cPPart A
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D >= 75
Tensile Strength >= 3000 psi
Adhesive Bond Strength >= 1200 psiTensile lap, Aluminum to Aluminum
 
Electrical PropertiesOriginal ValueComments
Dielectric Constant 4.5
@Frequency 60 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 50.0 - 55.0 µm/m-°C
Maximum Service Temperature, Air 194 °F
Minimum Service Temperature, Air -59.8 °F
Flammability, UL94 V-0
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hour
@Temperature 93.3 °C
 48.0 - 72.0 hour
@Temperature 23.9 °C
Working Life 90.0 - 150 minAfter mixing, 100 g batch
Shelf Life 12.0 Month
@Temperature <=23.9 °C
in original, unopened containers
 
Descriptive Properties
Mixing Ratio1:1 by weightParts A to B

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PMASTM822 / 185415

Flame Retardant adhesives

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