PLEXUS MA425 - 5 Gallon Pail Two-part Methacrylate Adhesive IT152

Product Name

PLEXUS MA425 - 5 Gallon Pail Two-part Methacrylate Adhesive IT152

Brief Description

Plexus MA425 is a high-performance, two-part methacrylate adhesive engineered for the structural bonding of diverse materials, including thermoplastics, metals, and composite assemblies. It is particularly noted for its ability to create extremely durable bonds with minimal to no surface preparation.

Popular Applications & Uses

- Structural bonding of composite, thermoplastic, and metal assemblies- Composite bonding applications in transportation and marine industries- Bonding of floors, interior panels, dividers, roof assemblies, and underfloor supports in rail wagons- Bonding of composite body panels, front and rear light assemblies, grilles, and end-caps in buses and trucks- Adhering to gelcoats, GRP, and various plastics in marine applications- Bonding aluminum, stainless steel, raw steel, and painted/coated metals- Joining ABS, Acrylics, FRP, PVC, Polyesters, Styrenics, Urethanes, Vinyl Esters, PMMA, PBT, PET, Polycarbonate, Rigid PVC, TPUs, Phenolics, Epoxy Based Composites, and RIM

Industries that Commonly Use It

- Automotive Service/Repair- Fabrication- General Manufacturing- Marine- Metal Fabrication- Plastic Fabrication- Transportation/ Specialty Vehicle

Special and Unique Features

- Requires virtually no surface preparation- Provides excellent fatigue endurance- Offers outstanding impact resistance- Delivers superior toughness- Features a long working time of 30 to 35 minutes- Dispenses as a non-sagging gel- Cures at room temperature- Exhibits exceptional strength and elongation

Key Properties

- **Adhesive Type:** Two-part Methacrylate Adhesive (MMA)- **Mix Ratio (by volume):** 10:1- **Working Time:** 30 – 35 minutes- **Fixture Time:** 80 – 90 minutes- **Operating Temperature:** -40°F – 180°F (-40°C – 82°C)- **Gap Filling:** 0.03 in. – 0.375 in. (0.75 mm – 9.5 mm), up to 10mm- **Mixed Density:** 8.01 lb/gal (0.96 g/cc)- **Flash Point:** 51°F (11°C)- **Tensile Strength:** 2,000 – 2,600 psi (13.8 – 17.9 MPa)- **Tensile Elongation:** 110% – 150%- **Shear Strength:** 1,700 – 2,600 psi (13.8 – 17.9 MPa)- **Viscosity (uncured):** Adhesive A: 100,000 – 125,000 cP; Activator B: 35,000 – 70,000 cP- **Color (mixed):** Blue- **Chemical Resistance:** Excellent to hydrocarbons, acids and bases (pH 3-10), salt solutions. Susceptible to polar solvents, strong acids and bases.

Surface Compatibility

- Thermoplastics- Metals (Aluminum, Stainless Steel, Raw Steel, Painted/coated metals)- Composites (FRP, Gelcoats, SMC, Laminate, Phenolics, Epoxy Based Composites, RIM)- Specific plastics: ABS, Acrylics, PVC, Polyesters (including DCPD modified), Styrenics, Urethanes (general), Vinyl Esters, PMMA, PBT, PET, Polycarbonate, Rigid PVC, TPUs

Known backups / known substitutes

- Maven MMA425- Other Plexus MMA adhesives such as MA330, MA420, MA2015, MA2030, MA832, MA920, MA205HV- General structural adhesives from brands like 3M, Araldite, ASI, LOCTITE, LORD, SCIGRIP, and Sika

Comparison Note

Plexus MA425 is a highly regarded structural adhesive, often presented as a competitive and viable alternative to traditional polyurethanes and epoxies due to its superior performance characteristics. Its key advantage lies in requiring little to no surface preparation, significantly streamlining bonding processes. Unlike some faster-curing methacrylate adhesives like Plexus MA420, MA425 offers a longer open time, making it suitable for applications requiring more assembly time.