One part electrically-conductive epoxy meets NASA specifications

A new single-component epoxy for demanding bonding, sealing and coating applications, EP3HTS-LO has been developed by Master Bond. The system passes ASTM E595 tests for NASA low outgassing, making it highly suitable for use in the aerospace, electronics, microelectronic and optical industries. Featuring a silver filler, EP3HTS-LO is electrically conductive with a low volume resistivity of less than 0.001 ohm-cm. It also has a thermal conductivity of 12-15 BTU•in/(ft²•hr•°F) [1.73-2.16 W/(m·K)]. EP3HTS is dimensionally stable and bonds well to metals, glass, composites, ceramics and many plastics. It withstands a variety of chemicals such as water, oils, fuels and cleaning agents. This high temperature resistant system is serviceable over the wide temperature range of -60F to +400F. As a one part compound, EP3HTS-LO offers convenient handling with no mixing and an unlimited working life at room temperature. This smooth thixotropic paste can be readily dispensed from a syringe. It polymerizes quickly at elevated temperatures with cure schedules of 45-50 minutes at 250F or 20-30 minutes at 300F, says the company.