Formulated with a blend of polymeric and inorganic materials, a two-component
epoxy from Master Bond (Hackensack, NJ) can be used in
bonding, sealing, casting, and coating applications. Serviceable over the
temperature range of -60 °F to 250 °F, EP30LTE-LO cures at room temperature,
with 85% of its maximum strength developed within 48 hours. Faster
cures are possible at elevated temperatures. The 100% reactive epoxy features
a low coefficient of thermal expansion
of 12×10-6 in/in/°C and a low shrinkage
rate of less than 0.0002 in/in. The product
creates bonds with a tensile strength of over
5,000 psi. The electrically insulative system
resists thermal cycling and chemicals
including water, fuels, and many acids,
bases, salts, and organic solvents. The epoxy
has a working life of up to 60 minutes for a
200-gram mass.