Certified to meet ASTM E595 NASA low outgassing standards, Master Bond EP46HT-2AO Black is well suited for the aerospace, electronic, optoelectronic industries and can be used vacuum environments. This two component system blends thermal stability with a high strength profile for a variety of bonding, sealing and encapsulation applications.
EP46HT-2AO Black combines thermal conductivity of 9-10BTU•in/ft2•hr•°F [1.2981-1.4423 W/(m·K)] and reliable electrical insulation with a volume resistivity exceeding 1014ohm-cm at room temperature. It has a glass transition temperature of 200-210°C and is serviceable over the temperature range of -73 to 260°C (-100 to 500°F). This dimensionally stable system delivers a tensile strength of 6,000-7,000psi, compressive strength of 26,000-28,000psi and tensile lap shear strength of 1,400-1,600psi at 24°C (75°F). EP46HT-2AO Black also withstands a variety of chemicals including oils, water, acids, bases and fuels.
According to the company, unlike most traditional two part epoxies, EP46HT-2AO Black cures with the addition of heat, which allows it to have a working life of over 24 hours. It has a 100 to 30-35 mix ratio by weight and upon mixing, this thixotropic system has a viscosity of 140,000-280,000cps. It bonds well to metals, composites, glass, ceramics, rubbers and many plastics.
This epoxy is available in ½ pint, pint, quart, gallon and 5 gallon container kits. Part A of this system is black in colour and Part B is grey. EP46HT-2AO Black has a minimum six month, maximum one year shelf life at ambient temperatures in original, unopened containers.
Master Bond thermally stable adhesives
Master Bond EP46HT-2AO Black is thermally conductive and electrically insulative adhesive, sealant and potting compound that meets NASA low outgassing requirements. This high strength, two component epoxy withstands temperatures up to 260°C (500°F).