Master Bond’s latest epoxy, EP3HT-LO, is a single component heat cured epoxy, with an unlimited working life at room temperature. This system passes ASTM E595 tests for NASA low outgassing, making it well suited for use in the aerospace, electronic, microelectronic and optical industries.
EP3HT-LO features a good strength profile, with a lap shear strength of 1,600 psi – 1,800 psi, a tensile strength of 5,000 psi – 6,000 psi and a tensile modulus of 250,000 psi – 300,000 psi. Additionally, the formula withstands 1,000 hours of 85°C/85% RH exposure.
The epoxy offers reliable electrical insulation properties with a dielectric constant of 3.9 at 60 Hz and a volume resistivity of greater than 1014 ohm-cm, at room temperature. EP3HT-LO can withstand a variety of chemicals such as water, oils, fuels, acids and bases. It also exhibits high temperature resistance, with the material serviceable from -60°F to +400°F (-51°C to 204°C).
As a one-part compound, EP3HT-LO offers convenient handling and processing. It cures with heat, quickly polymerising in as little as 5 – 10 minutes at 300°F (148.8°C). This epoxy bonds well to metals, glass, composites, ceramics and many plastics. EP3HT-LO is available for use in ½ pints, pints, quarts, gallons and syringes and has a shelf life of 6 months at ambient temperatures in original, unopened containers.
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