• Item Name: Plexus® MA560-1
• Manufacturer: ITW Performance Polymers
• Technologies: Methacrylate adhesive (two-part, 1:1 ratio)
• Color: Mixed – Gray (Part A: White, Part B: Black/White)
• Cure Type: Ambient temperature
• Package Size: 400-ml cartridges, 20-liter pails, 200-liter drums
• Shelf Life: 6 months
Plexus® MA560-1 is a two-part methacrylate structural adhesive formulated for bonding thermoplastics, metals, and composites. It cures at a 1:1 mix ratio with a long working time of 55–70 minutes at 23°C, making it suitable for large-scale assemblies where extended open time is needed.
Key Features & Benefits:
Very long open time, ideal for large bond lines (0.75–25 mm).
High fatigue endurance, impact resistance, and toughness.
Excellent adhesion to metals, composites, thermoplastics, and fiberglass.
Gray when mixed; available in cartridges, pails, and drums.
Shelf life: 6 months (stored 13–25°C).
Structural bonding of large thermoplastic, metal, and composite assemblies.
Widely used in marine industry for bonding stringers and liners into large fiberglass boats.
Suitable for thick bond lines up to 25 mm.
Can be applied manually (cartridges) or via bulk dispensing systems.
| Property | Part A | Part B |
|---|---|---|
| Color | White | Black/White |
| Mix Ratio by Volume | 1.00 | 1.00 |
| Mix Ratio by Weight | 1.00 | 1.00 |
| Density (g/ml) | 0.93 | 0.95 / 1.03 |
| Viscosity (cP ×1000) | 145 – 185 | 170 – 205 |
| VOC during cure (%) | <0.5 | – |
| Shelf Life (months) | 6 | 6 |
| Property | Value | Method / Notes |
|---|---|---|
| Tensile Strength | 2,500 – 3,100 psi (17.2 – 21.3 MPa) | ISO 527 |
| Tensile Modulus | 80 – 120 kpsi (552 – 827 MPa) | ISO 527 |
| Elongation at Break | >130 % | ISO 527 |
| Hardness | Shore D 70 | ASTM D2240 |
| Gap Tolerance | 0.03 – 1.00 in (0.75 – 25 mm) | – |
| Peak Exotherm Temp (30 g) | ~180°F (82.2°C) | – |
| Peak Exotherm Time (30 g) | 130 – 180 min | – |
| Temperature | Work Time (min) | Time to 50 psi (min) | Time to 500 psi (min) | Time to 1000 psi (min) |
|---|---|---|---|---|
| 60°F (15.6°C) | 80 – 85 | 140 – 145 | 215 – 225 | 235 – 245 |
| 75°F (23.9°C) | 55 – 70 | 120 – 130 | 210 – 220 | 230 – 240 |
| 90°F (32.2°C) | 45 – 50 | 70 – 75 | 90 – 95 | 105 – 110 |
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