2-Part Epoxy Structural Adhesive (60 min work time)

This two-component epoxy structural adhesive is formulated with a bisphenol A epoxy resin base and a modified polyamine hardener to provide a long 60-minute open working time at 23°C, making it ideal for large bonding operations, complex assemblies, and structural joints that require significant positioning and clamping time before cure. The adhesive mixes in a 2:1 ratio by volume (resin:hardener) and cures to a rigid, structural adhesive joint with tensile shear strength exceeding 18 MPa on steel (ISO 4587) and T-peel strength of 3–5 kN/m on FRP laminates. Full cure is achieved at room temperature in 24–48 hours, or in 2–3 hours at 60°C. The paste consistency prevents slumping or flow on vertical surfaces during the assembly window. Shore D hardness of the cured adhesive is 75–80. Compatible with substrates including steel, aluminum, FRP, timber, and concrete when properly prepared. Chemical resistance after cure is good for common industrial environments. Used extensively in marine structural bonding, wind blade root bonding, civil engineering composite joints, and industrial assembly.