Epoxy hybrid adhesive formulations have enabled unmodified epoxy systems to offer enhanced capabilities such as improved flexibility/elongation, impact/thermal cycling resistance, peel strength, long term durability. These desirable properties have been achieved by blending the epoxy resin with other polymeric resins. Liquid/paste hybrid adhesive epoxy-urethane and epoxy-polysulfide compositions are employed for structural bonding of similar/dissimilar substrates and exhibit characteristics only obtainable through a combination of resin families. These products overcome the shortcomings of conventional epoxy system modification that incorporate flexibilizers/tougheners, fillers/extenders, promoters to extend their usability in industrial assembly applications.
Easy to apply/cure epoxy hybrid adhesive materials are designed to increase productivity and cut costs. They can be dispensed on complex metal, plastic, rubber, ceramic parts including lighter, thinner surfaces and polymerize at room/elevated temperatures. Two component epoxy polysulfide compounds are metal free and noted for their outstanding corrosion/chemical resistance, high dielectric strength, low temperature serviceability, elasticity. They are engineered to withstand long term exposure to gasoline, natural gas, alcohol, crude oils. Epoxy-urethane grades are solvent-isocyanate free and show excellent toughness, impact/fatigue strength, low shrinkage, moisture/chemical inertness. Select grades fill gaps, cure quickly at low temperature, have optical clarity, color stability, weatherability and excellent aging results. They also adhere well to substrates with different CTEs during thermal cycling.