Plexus® MA422 is a two-part methacrylate adhesive designed for structural bonding of thermoplastic, metal, and composite assemblies. Combined at a 10:1 ratio, MA422 has a working time of 17 to 20 minutes and achieves approximately 75% of ultimate strength in 35 to 40 minutes at 74°F (23°C). Plexus MA422 is finding wide usage for composite bonding applications in the transportation and marine industries because it requires virtually no surface preparation. In addition, this product provides a unique combination of excellent fatigue endurance, outstanding impact resistance, and superior toughness. Plexus MA422 is blue when mixed and is supplied in a ready-to-use cartridge, 5-gallon (20 liter) pails, or 50-gallon (200-liter) drums to be dispensed as a non-sagging gel.
Key Features
- Working time of 17 – 24 mins
- Exceptional strength, elongation and fatigue resistance
- Non-sag thixotropic dispensing
| Typical Uncured Properties | Part A | Part B |
| Color | Off-White | Blue |
| Mix Ratio by Volume | 10.00 | 1.00 |
| Mix Ratio by Weight | 9.00 | 1.00 |
| Component Density, g/ml | 0.96 | 1.06 |
| Component Viscosity, cP x1000 | 100 – 135 | 35 – 70 |
| VOC’s during cure, % | < 1 | |
| Shelf Life, Months | 13/10 | |
