Description
Plexus MA300 Black Methacrylate Structural Adhesive – 400ml
Plexus MA300 Black is a high-strength two-part methacrylate (MMA) structural adhesive designed for demanding bonding applications across metals, thermoplastics and composite materials.
Engineered for industrial fabrication and assembly, MA300 delivers rapid strength build-up, excellent stiffness, and outstanding durability, making it a proven alternative to welding, riveting and mechanical fastening. Its non-sag gel formulation allows clean, controlled application on vertical and horizontal surfaces, ideal for production and repair environments.
With minimal surface preparation required, Plexus MA300 is widely used for bonding metal to plastic, composite to metal, and structural assemblies where long-term performance is critical.
⚙️ Performance & Cure Profile
When mixed at a 1:1 ratio, MA300 provides:
- Working time: 3–6 minutes
- Handling strength (500 psi): ~11–13 minutes
- High strength (1000 psi): ~13–16 minutes (at 23°C)
- Tensile strength: up to ~29 MPa
- Gap fill capability: up to 3.2mm
- Non-sag gel: ideal for vertical applications
This fast cure profile makes it perfect for high-throughput production and time-sensitive repairs.
✅ Key Benefits
- High-strength structural MMA adhesive
- Bonds metal, plastic and composites with minimal prep
- Fast curing for efficient assembly workflows
- Excellent impact, vibration and fatigue resistance
- High stiffness for load-bearing applications
- Gap filling up to 3.2mm
- Black finish for discreet, professional joints
- Replaces welding, rivets and mechanical fixings
🔩 Ideal Applications
- Metal to plastic bonding
- GRP / fibreglass assembly
- Automotive and vehicle bodywork
- Trailer and panel construction
- Composite fabrication (RTM, polyester, vinyl ester)
- Industrial manufacturing and repair
🧲 Adhesion – Bonds Exceptionally Well To
- Aluminium & stainless steel
- Painted and coated metals
- ABS, acrylics and polycarbonate (PC/ABS)
- Polyester and vinyl ester composites
- Fibreglass (GRP)
- Polyurethane materials
⚠️ Surface Preparation
Plexus MA300 typically requires little to no surface preparation, but best results are achieved when surfaces are clean, dry and free from grease or contaminants. For metals, a light solvent IPA wipe or cleaner such as PC120 is recommended.
💡 Why Choose Plexus MA300?
If you need a fast-curing structural adhesive that bonds dissimilar materials with high strength, Plexus MA300 is one of the most reliable MMA adhesives on the market. It’s built for real-world industrial conditions, where speed, strength and consistency matter.
