1997-05-12

Robustness of 2K Structural Adhesives:What It Is and How It Benefits The Adhesive User 971746

Robustness encompasses every aspect of the way in which a 2K (two-part) structural automotive adhesive is made and used, from manufacturing and storage to dispensability, adaptability to different substrates and stamping lubricants, cure characteristics, strength, and durability. Illustration of the many facets of adhesive robustness are made using primarily 3M #5047, a 2K epoxy hem flange adhesive developed for bonding oily untreated metals. Areas of robustness covered include storage stability, surface oil accommodation, open time, and performance under various curing conditions. The recent introduction of adhesives having unique mix ratio control and NDT capabilities heralds new levels of adhesive robustness.

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