Plexus® MA8105/GB is an advanced direct-to-metal, two-part methacrylate structural adhesive. It is designed for structural bonding of various metals, plastic, and composite assemblies. MA8105/GB does a superb job of bonding of metals, engineered thermoplastics (including polyamides), and composite assemblies with little to no surface preparation. Combined at a 1:1 ratio by volume, this product offers a unique combination of low odor, high-strength, toughness, and fatigue resistance. Plexus MA8105/GB contains 0.012-inch (0.3mm) inert glass beads and is available with and without glass-bead spacers (GB) in Bulk 5-gallon (20-liter) pails, or 50-gallon (200-liter) drums and is supplied only with glass-beads spacers in ready-to-use 50-ml, 400-ml cartridges, all to be dispensed as a non-sagging gel.
Key Benefits & Features
- Save Time and Labor
- Fast fixture time means more parts produced per hour
- Primerless adhesion means less time spent on surface preparation
- Increase Product Quality
- Distributes stress with high strength and high elongation
- Best in class heat resistance
- More Design Options
- Cross bonding of multiple different substrates
- Bond difficult substrates like polyamides (nylons) and galvanized steel
- Lightweight Designs
- Does not create heat affected zones like welding, allows for possible downgauging
- Non-filled product with low specific gravity
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Key Substrates
- Raw metals Aluminum, Stainless Steel, Raw Steel, etc.
- Coated metals: Hot Dipped Galvanized, Electrogalvanized, Galvanneal Powder-coated or E-coated Metals
- Thermoplastics ABS & ABS Blends, Acrylics, Polyamides/Nylons, PBT, Polycarbonate, Rigid PVC, TPU
- Composites: DCPD, FRP, Gelcoat, Phenolics, Epoxy Based Composites, RIM
Typical Uncured Properties | Part A | Part B |
Color | Off-White | Grey |
Mix Ratio by Volume | 1 | 1 |
Mix Ratio by Weight | 1.02 | 1.00 |
Component Density, g/ml | 0.98 | 0.96 |
Component Viscosity, cP x1000 | 70 – 140 | 50 – 120 |
VOC’s during cure, % | < 0.5 | |
Shelf Life, Months | 12 |