Master Bond has expanded its adhesive portfolio with the new edition of a one part epoxy, EP17TF with a paste consistency that can be readily dispensed evenly and uniformly.
Master Bond EP17TF is a one part epoxy with a moderately high glass transition temperature (Tg) of 150°C – 155°C and a wide service temperature range from -150°F to +550°F. Designed to compensate for thermal mismatches, this compound resists impact, vibration, shock and thermal cycling.
EP17TF is a reliable electrical insulator, possessing a volume resistivity greater than 1015 ohm-cm and a dielectric constant of 4.5Hz at 60Hz at room temperature. Master Bond ensures it maintains its electrical insulation properties, even at higher temperatures. The system has good toughness with an elongation of five to ten percent.
EP17TF exhibits high strength, bonding well to similar and dissimilar substrates such as metal, ceramics, plastics and composites. It offers a high lap shear strength of 3,200 psi – 3,400 psi, a tensile strength of 8,000 psi – 9,000 psi and a tensile modulus of 350,000 psi –400,000 psi at 75°F.
EP17TF requires an elevated temperature cure of 300°F for five to six hours, followed by a post cure at 350°F for four to five hours. The additional post cure is recommended to achieve optimal strength, chemical resistance and thermal properties. EP17TF can withstand many chemicals, including acids, bases, fuels, oils and many solvents.
The one part epoxy is available in standard packaging from ½ pint containers up to five gallon pails. Containers should be refrigerated to extend shelf life.
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