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Master Bond adhesives

Master Bond UV26 One part, very low viscosity UV curable epoxy system
Categories: Polymer; Thermoset; Epoxy; Epoxy Adhesive

Material Notes: Key Features:
  • No oxygen inhibition
  • Exceptionally high glass transition temperature
  • Robust physical strength properties
  • Superb chemical resistance
Master Bond UV26 is a one part UV curing system for bonding, coating and sealing. UV26 cures exceptionally quickly when exposed to UV light emitting at a wavelength of 320-365 nm with an energy output as low as 20-40 milliwatts per cm². UV26 cures so quickly that care must be taken not to cure it in sections thicker than .004 to .005 inches. Realistically for bonding, a thickness of .001 to .002 inches is more than adequate. Most important, UV26 is not oxygen inhibited. The system bonds well to glass, surface treated metals, and many plastics including polycarbonates and acrylics. UV26 is not only effective as an adhesive, but also as a coating and sealant. It is able to withstand acids, bases, fuels, and many aggressive solvents far better than most other UV systems. Its glass transition temperature is 160 to 170°C, considerably higher than other UVs. This system does not contain any solvents or volatiles and features low shrinkage upon curing. Its service temperature range is -60°F to +500°F. UV26 is a specialty type UV curable with advantageous chemical and temperature resistance so it is a prime candidate for applications in aerospace, electronic, optical, specialty OEM and related industries.

Product Advantages:

  • Fast cure upon exposure to a UV light
  • No oxygen inhibition while curing
  • Very good adhesion to a variety of substrates
  • Outstanding optical clarity
  • Top notch chemical and temperature resistance
  • Meets NASA low outgassing specifications

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 250 - 1500 cP250 - 1500 cP
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 80 - 9080 - 90
Tensile Strength 48.3 - 55.2 MPa7000 - 8000 psi
Tensile Modulus 2.41 - 2.76 GPa350 - 400 ksi
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+14 ohm-cm>= 1.00e+14 ohm-cm
Dielectric Constant 4.3
@Frequency 60 Hz
4.3
@Frequency 60 Hz
 
Thermal PropertiesMetricEnglishComments
CTE, linear 50.0 - 55.0 µm/m-°C27.8 - 30.6 µin/in-°F
Maximum Service Temperature, Air 260 °C500 °F
Minimum Service Temperature, Air -51.1 °C-60.0 °F
Glass Transition Temp, Tg 160 - 170 °C320 - 338 °F
 
Optical PropertiesMetricEnglishComments
Refractive Index 1.551.55
 
Processing PropertiesMetricEnglishComments
Shelf Life 6.00 Month6.00 MonthIn original unopened containers (with no exposure to light)

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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PMASTM738 / 233795

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