MMA structural adhesives offer distinct advantages over other adhesives: fast room-temperature curing, excellent mechanical properties and a broad range of adhesion.
Older MMA adhesives bond a wide range of materials but might struggle with difficult-to-bond metals like hot dipped galvanized steel or tough semi-crystalline plastics like polyamides (nylons). They may also have a strong odour. Certain applications require high strength even at 82°C or higher. Earlier formulations rarely exceeded strength beyond >1,000 psi (7 MPa).
ITW users have indicated that they prefer an adhesive that is easy to use, non-sag, and cures tack-free.
The MA8100 family of products are 1:1 mix-ratio high-strength and -elongation acrylate adhesives said to feature excellent adhesion properties on metals, including several types of galvanized, composites, rubbers, coatings, and thermoplastics. They come with the added benefit of greatly reduced odour.
Plexus MA8105 is a five-minute working time product with fixture times between 12-15 minutes.
MA8105 offers primerless adhesion to a wide range of substrates, resulting in cohesive or substrate failure. Composites, painted metals, and amorphous thermoplastics are often bonded with little to no surface preparation as long as they are dust free. MA8105 adhesive bonds oily metals; in the case of heavily oxidized metal, abrasion may be required.
