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Metal adhesives

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Master Bond EP41S-5Med Two component epoxy system
Categories: Polymer; Thermoset; Epoxy

Material Notes: Key Features:
  • Convenient handling
  • Easy to apply
  • Meets ISO 10993-5 specifications
  • Resists repeated autoclaving
Product Description: Master Bond EP41S-5Med is a two part epoxy system for bonding, sealing and coating, for use in medical devices. It has a forgiving 100 to 25 mix ratio by weight. It cures at room temperature or more rapidly at elevated temperatures, with the optimum being overnight at room temperature followed by 3-4 hours at 150-200°F. EP41S- 5Med has stellar resistance to a wide host of sterilants, including those derived from hydrogen peroxide. It also withstands acids, bases, and aggressive solvents. The system has no solvents or diluents, and low shrinkage upon curing. It bonds well to a wide variety of substrates including metals, composites, glass, ceramics, as well as many rubbers and plastics. This epoxy has very good physical strength properties and electrical insulation values. EP41S-5Med is serviceable over a wide temperature range of -80°F to +450°F. The standard color is black. This epoxy can be used for bonding and sealing in endoscopes, imaging systems, implantable devices, surgical instruments, sterilization chambers, as well as in medical electronics.

Product Advantages:

  • Easy to use
  • High glass transition temperature
  • Convenient packaging, available in a gun dispenser
  • Highly resistant to solvents, including ethanol
  • Withstands hydrogen peroxide based sterilants including Steris
  • Meets ISO 10993-5 specifications

Information provided by Master Bond.

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 1500 - 2500 cPPart B
 25000 - 30000 cPMixed
 50000 - 110000 cPPart A
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 85 - 95
Tensile Strength 10000 - 12000 psi
Adhesive Bond Strength 900 - 1100 psiTensile lap shear, Al to Al
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+14 ohm-cm
Dielectric Constant 3.5
@Frequency 60 Hz
Dielectric Strength 440 V/mil
@Thickness 3.17 mm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 35.0 - 40.0 µm/m-°C
Maximum Service Temperature, Air 450 °F
Minimum Service Temperature, Air -80.0 °F
Glass Transition Temp, Tg 140 - 145 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hour
@Temperature 65.6 - 93.3 °C
Option 2
 3.00 - 4.00 hour
@Temperature 93.3 °C
Optimal: overnight at 75°F, plus 3-4 hours at 200°F
 72.0 - 120 hour
@Temperature 23.9 °C
Option 1
Working Life 30.0 - 45.0 minafter mixing, 100 gram batch
Shelf Life 6.00 Monthin syringes, in original, unopened containers
 12.0 Monthin cans, in original, unopened containers
 
Descriptive Properties
Mixing ratio100:25 by weightPart A to B

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PMASTM5924 / 306813

Metal adhesives

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