Thermally conductive, high temperature resistant epoxy passes NASA standards

Certified to meet ASTM E595 NASA low outgassing standards, Master Bond EP46HT-2AO Black is well suited for the aerospace, electronic, opto-electronic 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. The epoxy combines superior thermal conductivity of 9-10 BTU•in/ft2•hr•F [1.2981-1.4423W/(m·K)] and reliable electrical insulation with a volume resistivity exceeding 1014ohm-cm at room temperature. It has a glass transition temperature of 200C-210C and is serviceable over the wide temperature range of -73C to +260C. This dimensionally stable system delivers a tensile strength of 6,000psi-7,000psi, compressive strength of 26,000pis-28,000psi and tensile lap shear strength of 1,400psi-1,600psi at 75F. It also withstands a variety of chemicals including oils, water, acids, bases and fuels. Unlike most traditional two part epoxies, it cures with the addition of heat, which allows it to have a working life of over 24 hours. It has a forgiving 100 to 30-35 mix ratio by weight and upon mixing, this thixotropic system has a viscosity of 140,000cps-280,000cps. It bonds well to metals, composites, glass, ceramics, rubbers and many plastics. This epoxy is available in half pint, pint, quart, gallon and five gallon container kits. Part A of this system is black in color and Part B is gray. The epoxy has a minimum six month, maximum one year shelf life at ambient temperatures in original, unopened containers.