Typical Formulation Ingredients
Phase
Ingredient
Parts by weight
A
Nylon resin (Elvamide 8061, Dupont)
A
Thermosetting phenolics resin
A
Triethylene tetramine (TETA)
Typical Properties
Lap shear strength, psi, on unprimed Alcad 2024-T3 aluminum
Resulting Properties
Although Elvamide 8061 can function as heat-activated adhesives (good shear and peel strength), the addition of a thermoset resin, e.g. 20%, which cross-links with polyamide during curing, eliminates creep and gives an adhesive of superior toughness and flexibility.
The bonds formed during the curing of compositions of Elvamide 8061 and thermoset resins are capable of withstanding severe deformation; they are also significantly stronger than the bonds developed in adhesives based on thermoset resins alone. Adhesives of Elvamide 8061 and epoxy resin, for example, develop much higher peel strengths than the corresponding straight epoxy formulations.
(Source: Dupont Elvamide Nylon Multipolymer Resin, Dupont.)