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USP Class VI Adhesives
USP Class VI Approved Adhesives for Medical Device Applications
Master Bond’s biocompatible adhesives are designed to meet the needs of medical device manufacturers. Compounds withstand various types of sterilization methods.

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Master Bond EP42HT-4AOMed Black Two part, thermally conductive epoxy for medical device manufacturing
Categories: Polymer; Thermoset; Epoxy; Epoxy Adhesive; Epoxy, Thermally Conductive

Material Notes: Master Bond EP42HT-4AOMed Black is a two component epoxy adhesive, sealant, coating and casting system with a number of noteworthy features. It has a forgiving mix ratio of 100 to 40 by weight along with very good flow properties. It cures readily at ambient temperatures or more rapidly at elevated temperatures. To optimize the properties, the best cure schedule is overnight at room temperature, followed by 2-3 hours at 150-200°F. EP42HT-4AOMed Black has good thermal conductivity, while still maintaining excellent electrical insulation values. It bonds well to a wide variety of substrates, including metals, composites, glass, ceramics, rubbers and plastics. Since this system contains filler, an added benefit is enhanced dimensional stability and very low shrinkage upon curing. EP42HT-4AOMed Black has lower exotherm and is castable to thicknesses up to and exceeding 2-3 inches. EP42HT-4AOMed Black has stellar resistance to repeated autoclaving, radiation and aggressive chemical sterilants. This epoxy is also notable in that it is cryogenically serviceable. Its temperature range is 4K to +400°F. It is most likely to be considered in specialty medical device applications.

Product Advantages:

  • Relatively easy handling
  • Long working life
  • Conducts heat while still electrically insulative
  • Cryogenically serviceable
  • Can resist higher temperatures
Key Features:
  • Exceptional heat resistance
  • Thermally conductive and electrically insulative
  • Cryogenically serviceable
  • Passes ISO 10993-5 and USP Class VI

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 200 - 1000 cPPart B
 50000 - 120000 cPPart A
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 85 - 90
 90
@Treatment Temp. 85.0 °C,
Time 3.60e+6 sec
85% RH
Tensile Strength 7000 - 8000 psi
Tensile Modulus 500000 - 550000 psi
Adhesive Bond Strength 900 - 1100 psiTensile lap shear, Al to Al
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+14 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 18.0 - 21.0 µm/m-°C
Thermal Conductivity 9.00 - 10.0 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 204 °C
Minimum Service Temperature, Air -269 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hour
@Temperature 65.6 - 93.3 °C
Optimal: overnight at 75°F plus 2-3 hours at 150-200°F
 2.00 - 3.00 hour
@Temperature 93.3 °C
Option 2
 48.0 - 72.0 hour
@Temperature 23.9 °C
Option 1
Working Life 75.0 - 120 min100 gram batch
Shelf Life 6.00 Month
 
Compliance PropertiesOriginal ValueComments
USP Class VI Yes
 
Descriptive Properties
Mixing ratio100:40

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PMASTM639 / 268827

USP Class VI Adhesives
USP Class VI Approved Adhesives for Medical Device Applications
Master Bond’s biocompatible adhesives are designed to meet the needs of medical device manufacturers. Compounds withstand various types of sterilization methods.

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