MASTER BOND: Thermally Conductive, Chemically Resistant Epoxy Sealant
Master Bond reports that the product’s long working life makes it ideal for bonding and sealing large or intricate parts that may need ample time for mixing and applying.
Master Bond EP62-1AO is a two-part epoxy adhesive and sealant with a working life of 12-14 hr at ambient temperature for a 100-g mass. According to the company, this makes it beneficial when bonding and sealing large or intricate parts that may need ample time for mixing and applying. The material reportedly has a high strength profile with a tensile modulus of 600,000-650,000 psi and a tensile strength of 5,000-6,000 psi. The service temperature range is -60-450˚F, and it offers a glass transition temperature of 120-125°C.
EP62-1AO is both electrically insulating and thermally conductive, with a thermal conductivity value of 9-10 BTU/in (ft2/hr/°F), or 1.30-1.44 W (m/K). It can withstand a wide range of acids, bases, and solvents. EP62-1AO has a coefficient of thermal expansion of 18-21 x 10-6 in/in/°C.
The viscosity of the mixed compound is of a thixotropic paste consistency. Several cure schedule options are available; they all require a relatively low heat activation. Additional post curing for 2-4 hr at 200-300°F is recommended to obtain optimal performance properties. It is available in 30-cc syringe kits, ½-pint kits, pint kits, and quart kits. The color of Part A is off white, and Part B is dark brown.
Additional details are available at www.masterbond.com.