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Specialty Compounds RTP Company

Master Bond EP65HT Fast Setting Epoxy Resists High Temperatures
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive

Material Notes: Description: Master Bond EP65HT represents a highly innovative advance in epoxy technology in that it features the unusual combination of very fast cures and high temperature resistance. While typical fast setting epoxies normally possess glass transition temperatures (Tg) below 85°C, EP65HT has an exceptional Tg of approximately 130-135°C. In addition, unlike typical fast cure epoxies, EP65HT retains fast setup times even when mixed in relatively small masses. EP65HT normally will setup in 8-14 minutes in 10-20 gram masses. A full cure normally occurs within a few hours with exceptionally high tensile shear strengths of over 2,500 psi. This system offers good physical properties, including low shrinkage upon cure, excellent dimensional stability, high modulus and tensile strength. The service temperature range is -60°F to +400°F. EP65HT offers great electrical insulation properties and a strong chemical resistance profile. EP65HT bonds well to a wide variety of substrates including metals, glass, ceramics, vulcanized rubbers and many plastics. Dispensing EP65HT has been tremendously facilitated by the development of a dispensing gun capable of mixing fast setting materials with a ten to one mix ratio. This system is 100% reactive and does not contain any solvents or other volatiles. Part A is clear, and Part B is dark brown in color. It is widely used for both manufacturing and prototyping in the aerospace, electronic, computer, optical, automotive and fiber-optic industries as well as OEM applications pertaining to vacuums and clean rooms.

Product Advantages:

  • Very fast setting and curing even in small masses; short fixturing time.
  • Exceptionally high heat resistance.
  • Good physical strength properties especially bonding strength.
  • Good electrical insulation properties.
  • Excellent environmental and chemical resistance profile.
  • Available with convenient dispensing gun.

Information provided by MasterBond®

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 PropertiesMetricEnglishComments
Viscosity 8000 - 10000 cP8000 - 10000 cPPart B
 55000 - 110000 cP55000 - 110000 cPPart A
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 75 - 8575 - 85
Tensile Strength at Break >= 51.7 MPa>= 7500 psi
Tensile Modulus >= 3.10 GPa>= 450 ksi
Shear Strength >= 17.2 MPa>= 2500 psiBond, Al to Al
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+14 ohm-cm>= 1.00e+14 ohm-cm
Dielectric Constant 4.1
@Frequency 60 Hz,
Temperature 25.0 °C
4.1
@Frequency 60 Hz,
Temperature 77.0 °F
 
Thermal PropertiesMetricEnglishComments
Maximum Service Temperature, Air 204 °C400 °F
Minimum Service Temperature, Air -51.1 °C-60.0 °F
Glass Transition Temp, Tg 130 - 135 °C266 - 275 °F
 
Processing PropertiesMetricEnglishComments
Cure Time 360 - 600 min
@Temperature 23.9 °C
6.00 - 10.0 hour
@Temperature 75.0 °F
Gel Time 8.00 - 14.0 min8.00 - 14.0 min
Shelf Life 6.00 Month6.00 Monthunopened containers
 
Descriptive Properties
Mixing Ratio (A to B)10:1by weight

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 view all the property values for this datasheet as they were originally entered into MatWeb.

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PMASTB410 / 149657

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