Typical Formulation Ingredients
Ingredient
Parts by weight
Benzophenone tetracarboxylic dianhydride (BTDA)
Typical Properties
Shear strength, psi, on acid etched aluminum tested at:
Resulting Properties
Certain epoxy adhesive formulations, however, have been able to withstand short terms at 250°C and long term service at 150-180°C. These systems were formulated specifically for thermal environments by incorporation of stable epoxy coreactants or high temperature curing agents (e.g., anhydrides such as BTDA) into the adhesive. The high temperature properties of an epoxy adhesive formulation cured with BTDA are given in the table above.