Plexus® MA425 is a two-part methacrylate adhesive designed for structural bonding of thermoplastic, metal, and composite assemblies. Combined at a 10:1 ratio, MA425 has a working time of 28 to 30 minutes and achieves approximately 75% of ultimate strength in 80 to 90 minutes at 74°F (23°C). Plexus MA425 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 MA425 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 30 – 35 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 | 1 |
Mix Ratio by Weight | 9.00 | 1.00 |
Component Density, g/ml | 0.97 | 1.05 |
Component Viscosity, cP x1000 | 100 – 125 | 35 – 70 |
VOC’s during cure, % | < 1 | |
Shelf Life, Months | 13/10 |