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Metal adhesives

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Master Bond Supreme 45HT-3 Two component, quartz filled epoxy system
Categories: Polymer; Thermoset; Epoxy

Material Notes: Key Features:
  • Very long open time
  • High temperature resistance
  • Exceptional compressive strength
  • Withstands abrasive forces
Product Description: Master Bond Supreme 45HT-3 is a two component, toughened epoxy system for high performance bonding, sealing and casting. It has a forgiving 100 to 15 mix ratio by weight. The working life after mixing is 12-24 hours and it provides moderate to high viscosity with good flow. The system requires oven curing at 250°F for 6 to 8 hours, or 4 to 6 hours at 350°F. The optimal cure schedule is 300°F for 2 to 3 hours, followed by a post cure at 350°F for 4 to 6 hours. It is 100% reactive without any solvents or diluents. Supreme 45HT-3 has very low linear as well as volumetric shrinkage upon curing. Supreme 45HT-3 bonds well to a wide variety of substrates, including metals, composites, ceramics and many different plastics. After curing, it has a number of desirable physical strength properties including a high modulus and exceptional compressive strength. It is a toughened system that can withstand rigorous thermal cycling. This epoxy excels in withstanding chemicals seen in downhole environments, be it acids, bases or solvents. The presence of the quartz filler confers enhanced dimensional stability and increased abrasion resistance. Supreme 45HT-3 is a reliable electrical insulator. It is a relatively high Tg epoxy with a service temperature range from -100°F to +550°F. The color of Part A is tan and Part B is brown. Everything considered, Supreme 45HT-3 is a versatile system that can be used in aerospace, electronic, oil and chemical processing, specialty OEM, and similar type applications.

Product Advantages:

  • Long working life
  • Low linear and volumetric shrinkage upon curing
  • Extremely chemical resistant
  • High glass transition temperature
  • Impressive compressive strength
  • Robust dimensional stability

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 500 - 2500 cPPart B
 50000 - 100000 cPMixed
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 80 - 90
Tensile Strength 9000 - 10000 psi
Tensile Modulus 550000 - 600000 psi
Compressive Strength 24000 - 26000 psi
Adhesive Bond Strength 2200 - 2400 psiTensile lap shear, Al to Al
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+14 ohm-cm
Dielectric Constant 4.5
@Frequency 60 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 30.0 - 35.0 µm/m-°C
Maximum Service Temperature, Air 550 °F
Minimum Service Temperature, Air -100 °F
Glass Transition Temp, Tg 145 - 155 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hour
@Temperature 149 °C
Optimum, with a post cure at 350°F for 4-6 hours
 4.00 - 6.00 hour
@Temperature 177 °C
 6.00 - 8.00 hour
@Temperature 121 °C
Working Life 12.0 - 24.0 hourafter mixing, 100 gram batch
Shelf Life 6.00 Monthin original, unopened containers
 
Descriptive Properties
Mixing ratio100:15 by weightParts A to B
ViscositypastePart A

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PMASTM5942 / 306831

Metal adhesives

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