PLEXUS MA8105 GB - Metal, Nylon, and Plastics MMA Glue Fast 5-Min Set Toughened Low-Odor Marine Optimized

Product Name

- PLEXUS MA8105 GB - Metal, Nylon, and Plastics MMA Glue Fast 5-Min Set Toughened Low-Odor Marine Optimized

Brief Description

- Plexus MA8105 GB is an advanced, two-part methacrylate structural adhesive (MMA) designed for high-strength bonding of a wide range of metals, plastics, and composite assemblies.- It features a fast 5-7 minute working time and achieves handling strength in approximately 15-20 minutes.- The adhesive is toughened for excellent fatigue and impact resistance, offers low odor, and is specifically optimized for marine environments.- It contains 0.012-inch (0.3mm) inert glass beads to ensure a consistent bondline.

Popular Applications & Uses

- Structural bonding of various metals, plastics, and composite assemblies in industrial and transportation manufacturing.- Bonding hulls, deck liners, ski boats, yachts, internal fixtures, canoes, and kayaks in the marine industry.- Automotive applications including bonding carbon fiber body panels, side and roof panels, door panels, and aerodynamic components for trucks and construction equipment.- Electric motor manufacturing, such as bonding magnets to metal housings.- Bonding aluminum and stainless steel lettering in the sign manufacturing industry.- Door seams and internal stiffeners in steel door manufacturing.- General assembly and repair applications requiring strong, durable bonds with minimal surface preparation.

Industries that Commonly Use It

- Marine- General Manufacturing- Metal Fabrication- Plastic Fabrication- Transportation/ Specialty Vehicle- Aerospace/Defense- Construction/ Building Services- Automotive Service/Repair- Sign & Display- LED/Electronics- Furniture- PVC Trimboard

Special and Unique Features

- **Fast 5-Minute Set:** Offers a quick working time of 5-7 minutes and rapid fixture time (12-16 minutes), enabling high throughput.- **Toughened Formula:** Provides exceptional strength, elongation, fatigue resistance, and impact resistance.- **Low Odor:** Formulated to minimize concerns and enhance manufacturing environments.- **Marine Optimized:** Excellent environmental resistance, including to salt spray, making it ideal for marine applications.- **Primerless Adhesion:** Bonds effectively to a wide range of metals, thermoplastics, and composites with little to no surface preparation.- **Glass Bead (GB) Reinforcement:** Contains 0.012-inch (0.3mm) inert glass beads to ensure a consistent bondline thickness and enhance strength.- **Bonds Dissimilar Materials:** Capable of cross-bonding multiple different substrates, including difficult ones like polyamides (nylons) and galvanized steel.

Key Properties

- **Adhesive Type:** Two-part Methyl Methacrylate (MMA) structural adhesive.- **Mix Ratio (v/v):** 1:1.- **Color:** Gray (also available in Off-White for MA8105).- **Working Time:** 3-6 minutes (some sources indicate 5-7 minutes).- **Fixture Time:** 12-16 minutes (time to 500 psi).- **Tensile Strength:** 3,000 – 3,600 psi (20.7 – 24.8 MPa).- **Tensile Elongation:** 20 – 40%.- **Shear Strength:** 1,800 – 2,700 psi (12.4 – 18.6 MPa).- **Viscosity (Adhesive/Activator):** 50,000 – 120,000 cP.- **Thermal Resistance:** -40°C to +120°C (-40°F to +248°F).- **Gap Tolerance:** 0.01 - 0.5 inches (0.25 - 12.7 mm).

Surface Compatibility

- **Raw Metals:** Aluminum, Stainless Steel, Raw Steel.- **Coated Metals:** Hot Dipped Galvanized, Electrogalvanized, Powder-coated, or E-coated Metals.- **Nylons (Polyamides):** All nylon types (Nylon-6, Nylon-12, etc.).- **Thermoplastics:** ABS & ABS Blends, Acrylics, PBT, Polycarbonate, Rigid PVC, TPU.- **Composites:** DCPD, FRP, Gelcoat, Phenolics, Epoxy Based Composites, RIM.

Known backups / known substitutes

- Plexus MA8110GB (10-Minute Set)- Plexus MA8120GB (20-Minute Set)- Maven MMA8105 GB (5-Minute Set)- Maven MMA8110 GB (10-Minute Set)- Maven MMA8120 GB (20-Minute Set)- Infinity Bond MMA 330 (similar performance to Plexus MA330).- Other MMA adhesives from brands like SCIGRIP, LORD, Sika, ASI, and 3M may serve as alternatives depending on specific application requirements.

Comparison Note

- Plexus MA8105 GB stands out as a next-generation MMA adhesive, offering a unique balance of fast cure, high strength, and exceptional toughness, particularly for bonding dissimilar materials without extensive surface preparation.- Its low odor and marine optimization make it suitable for environments where traditional MMAs might be less desirable.- The embedded glass beads ensure a consistent bondline, which is crucial for reliable structural integrity, especially under high-pressure clamping.- Compared to some competitive MMAs, Plexus MA8105 offers significantly higher heat resistance, maintaining strong shear strengths at elevated temperatures.