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Elmet Technologies

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Master Bond EP41S-1 Chemically Resistant Two Component Epoxy System
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive

Material Notes: Key Features:
  • Low viscosity
  • Ambient temperature cures
  • 100% reactive
  • Outstanding chemical resistance
  • Bonds well to a wide range of substrates
  • For bonding, sealing and encapsulation
Product Description: Master Bond EP41S-1 is a two component epoxy resin system for high performance bonding, sealing, coating and encapsulating. It has a 100 to 30 mix ratio by weight and is formulated to cure at ambient temperatures or more quickly at elevated temperatures. It has extraordinary resistance to a wide array of chemicals, including solvents, alcohols and fuels (a more detailed list of these chemicals appears below). Of special significance is its resistance to gasohol, which is fairly aggressive against many types of plastics and rubbers. EP41S-1 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. EP41S-1 can be used as an adhesive, sealant, coating, potting or encapsulating material. It is serviceable over the wide temperature range of -60°F to +300°F. It adheres well to a wide variety of substrates including metals, glass, ceramics and many rubbers and plastics. The standard version of this system has a lower viscosity with good flow. A non-drip version called EP41S-1ND is also available. Part A is clear and Part B is amber clear. This epoxy compound is widely used in aerospace, electronic, chemical processing applications and in other applications where chemical resistance to solvents and fuels is needed.

Product Advantages:

  • 100% reactive compound does not contain any 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 +300°F
  • Good electrical insulator; low viscosity, ideal for potting and encapsulation
  • Outstanding chemical resistance, particularly to fuels, alcohols and solvents

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 250 - 400 cPPart B
 10000 - 15000 cPPart A
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength >= 8000 psi
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+14 ohm-cm
Dielectric Constant 3.7
@Frequency 60 Hz
Dielectric Strength 440 V/mil
@Thickness 3.17 mm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 40.0 - 45.0 µm/m-°C
Maximum Service Temperature, Air 300 °F
Minimum Service Temperature, Air -60.0 °F
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hour
@Temperature 93.3 °C
 24.0 - 48.0 hour
@Temperature 23.9 °C
Working Life 20.0 - 35.0 minAfter mixing, 100 g batch
Shelf Life 12.0 Month
@Temperature <=23.9 °C
in original, unopened containers
 
Descriptive Properties
Chemical ResistanceAmmonium Hydroxide (50%)No Failures Observed after 14 Months, Test Discontinued
 BenzeneNo Failures Observed after 14 Months, Test Discontinued
 DiethanolamineNo Failures Observed after 14 Months, Test Discontinued
 Distilled WaterNo Failures Observed after 14 Months, Test Discontinued
 DMSO3-9 Months Adversely Affected—Softened, Weight Gain or Loss
 EthanolNo Failures Observed after 14 Months, Test Discontinued
 Ethyl AcetateNo Failures Observed after 14 Months, Test Discontinued
 Ethylene GlycolNo Failures Observed after 14 Months, Test Discontinued
 Fuel OilNo Failures Observed after 14 Months, Test Discontinued
 GasolineNo Failures Observed after 14 Months, Test Discontinued
 HeptaneNo Failures Observed after 14 Months, Test Discontinued
 Hydrochloric Acid (36%)3-9 Months Adversely Affected—Softened, Weight Gain or Loss
 IsopropanolNo Failures Observed after 14 Months, Test Discontinued
 JP 4, JP 10 Jet FuelsNo Failures Observed after 14 Months, Test Discontinued
 MethanolNo Failures Observed after 14 Months, Test Discontinued
 Phenol3-9 Months Adversely Affected—Softened, Weight Gain or Loss
 Potassium Hydroxide (50%)No Failures Observed after 14 Months, Test Discontinued
 Pyridine & Pyridine bases3-9 Months Adversely Affected—Softened, Weight Gain or Loss
 SeawaterNo Failures Observed after 14 Months, Test Discontinued
 SkydrolNo Failures Observed after 14 Months, Test Discontinued
 Sodium Hydroxide (50%)No Failures Observed after 14 Months, Test Discontinued
 Tetrahydrofuran3-9 Months Adversely Affected—Softened, Weight Gain or Loss
 TolueneNo Failures Observed after 14 Months, Test Discontinued
 Various GasoholsNo Failures Observed after 14 Months, Test Discontinued
 XyleneNo Failures Observed after 14 Months, Test Discontinued
Cure Scheduleovernight at 75°Fplus 2-3 hours at 200°F
Mixing Ratio100:30 by weightParts A to B

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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