Product Name
PLEXUS Bulk MA300 & MA310 Part B Activator 5 Gallon Pails & 50 Gallon Drums
Brief Description
This product is the Part B Activator (hardener) specifically formulated for use with Plexus MA300 and MA310 two-part methacrylate structural adhesives. These adhesives are renowned for their high strength, stiffness, and toughness, making them suitable for robust bonding applications. Plexus MA300 is characterized by its fast-curing properties, while Plexus MA310 offers a slightly longer working time, providing flexibility for various assembly needs.
Popular Applications & Uses
- Structural bonding of thermoplastic, metal, and composite assemblies.- Ideal for transportation assemblies, including automotive, RV, and marine applications.- Used in composite reinforcement and panel bonding.- Effective for joining various thermoplastics such as ABS, acrylic, polycarbonate, PBT, Rigid PVC, and TPU.- Provides strong adhesion to coated or powder-coated metals, as well as raw aluminum or steel.- Suitable for general industrial bonding applications where high performance is required.
Industries that Commonly Use It
- Aerospace/Defense- Automotive Service/Repair- Construction/Building Services- Fabrication- General Manufacturing- Marine- Metal Fabrication- Plastic Fabrication- Transportation/Specialty Vehicle
Special and Unique Features
- Essential Part B Activator for both Plexus MA300 (fast-curing) and MA310 (medium-curing, longer working time) adhesive systems.- Enables the adhesive system to achieve high bond strength, often comparable to or surpassing traditional mechanical fasteners like bolts or welds.- Engineered for performance in demanding environments.- Features a non-sag thixotropic gel consistency, allowing for precise application in vertical or overhead joints.- Typically requires little to no surface preparation for many substrates, simplifying the bonding process.- Cures at room temperature, facilitating ease of application.- Offers excellent resistance to hydrocarbons, acids, bases (pH 3-10), and salt solutions.
Key Properties
- Forms a two-part methacrylate adhesive system when combined with Part A.- Features a convenient 1:1 mix ratio by volume and weight.- Ensures fast and consistent strength development at room temperature.- Delivers high strength, stiffness, and toughness to bonded assemblies.- Plexus MA300 offers a working time of 3-6 minutes.- Plexus MA310 provides a working time of 15-18 minutes.- Plexus MA310 has a fixture time of 30-35 minutes or 45-55 minutes.- Capable of gap filling from 0.03 inches to 0.125 inches (0.75 mm to 3.2 mm) for MA310.- Operating temperature range for MA310 is -67°F to 250°F (-55°C to 121°C).- The activator (Part B) is typically yellow in color.- Viscosity (uncured, both parts): 40,000 – 70,000 cP.- Tensile Strength (MA310): 3,500–4,500 psi (24.1–31.0 MPa) or 4,410-5,390 psi (30.4-37.2 MPa).- Elongation at Break (MA310): 5–15% or 20-40%.
Surface Compatibility
- Thermoplastics- Metals (e.g., aluminum, stainless steel, raw steel, galvanized metal)- Composites (e.g., FRP, gelcoats, vinyl esters)- ABS- Acrylics- PVC- Polyester- Nylon- Rubber- Styrenics- Urethanes (general, RIM urethane)- Wood- Can bond to poorly prepared surfaces, though testing is recommended for optimal performance.
Known backups / known substitutes
- Other Plexus methacrylate adhesives, such as MA320, MA330, MA420, MA8210, MA205HV, MA2015, MA2030, and MA2045.- Other structural acrylic (MMA) adhesives from various manufacturers.- Epoxy adhesives.- Polyurethane/Urethane adhesives.
Comparison Note
- Plexus MA300, when activated, offers a faster fixture time, making it ideal for applications requiring rapid throughput and minimal downtime.- Plexus MA310, when activated, provides a slightly longer working time (open time), which offers greater flexibility for larger assemblies or when precise alignment is critical.- Both MA300 and MA310 adhesive systems share core properties of high strength, structural bonding capabilities, and broad compatibility with metals, plastics, and composites.
