Plexus® MA590 Two-part Methacrylate Adhesive

Plexus® MA590 is a high-performance, two-part methacrylate adhesive designed for structural bonding of thermoplastics, metals, and composites. Mixed at a 1:1 ratio, MA590 offers a working time of 90-105 minutes at 23°C (74°F). It achieves lap shear values of 500 psi in 5 hours and 1000 psi in 6.5 hours at a 0.75 mm bond line. Ideal for large marine structures needing long open times, MA590 is commonly used in bonding stringers and liners in large fiberglass boats with bond lines up to 1 inch thick. This adhesive combines excellent fatigue endurance, impact resistance, and superior toughness. MA590 is gray when mixed and available in 400 ml cartridges, 20-liter pails, and 200-liter drums.

Key Features:

• Extra long working time: 90-105 minutes
• Excellent gap filling and thixotropic properties
• Easy 1:1 mix ratio
• High strength and elongation

Key Substrates:

• Composites: DCPD, FRP, Gelcoat, Phenolics, Epoxy Composites, RIM
• Coated Metals: Powder-coated, E-coated metals
• Thermoplastics: ABS, Acrylics, PBT, Polycarbonate, Rigid PVC, TPU
• Raw Metals: Aluminum, Stainless Steel, Raw Steel