Product Name
SciGrip SG300-OW-5 Off-White 5-Minute High Strength Toughened 10:1 MMA Methacrylate Adhesive
Brief Description
SciGrip SG300-OW-5 is a two-component, off-white, 10:1 mix ratio methyl methacrylate (MMA) structural adhesive engineered for high-strength bonding of metals, composites, and various plastics. It features a rapid 5-minute working time, making it ideal for fast-paced assembly operations. This toughened adhesive provides excellent fatigue, impact, and shock load resistance, along with outstanding environmental durability. It is designed to offer primerless adhesion to most metals and reduced bond line read-through on show surfaces.
Popular Applications & Uses
- Bonding panels of aluminum to other panels- Attaching side and roof panels, door panels, and aerodynamic components in trucks and construction equipment- Bonding hulls, deck liners, ski boats, yachts, internal fixtures, canoes, and kayaks in marine applications- Rail carriage applications, including interior and exterior panels, seating, windows, door assemblies, dashboards, luggage storage compartments, and gangways- Automotive panel bonding and bonding composite panels to metal frames in vehicles- Structural bonding of engineered thermoplastics, metals, and composite assemblies- Bonding acrylic panels, frames, and metal supports for signage and displays- Electric motor manufacturing, such as bonding magnets to metal housings- General product assembly and infrastructure projects- Modelling and model making, including model railway kits
Industries that Commonly Use It
- Aerospace/Defense- Automotive Service/Repair- Construction/ Building Services- Fabrication- General Manufacturing- Marine- Metal Fabrication- Plastic Fabrication- Sign & Display- Transportation/ Specialty Vehicle- Prosumer (for hobby and model making)
Special and Unique Features
- **5-Minute Working Time:** Allows for rapid assembly and increased production efficiency.- **Primerless Adhesion:** Bonds most metals without the need for primers, simplifying processes and reducing costs.- **Reduced Bond Line Read-Through:** Minimizes post-finishing requirements and enhances aesthetic appearance on thin-gauge metals and show surfaces.- **Toughened Formula:** Provides exceptional fatigue, impact, and shock load resistance, crucial for applications with vibration and stress.- **Excellent Environmental Resistance:** Maintains bond strength in harsh operating environments, including resistance to salt spray and temperature variations.- **Non-Sag Application:** Facilitates application on non-level or vertical surfaces without running or dripping.- **Gap Filling:** Capable of filling gaps up to 9.5mm, accommodating irregular surfaces or high tolerance fits.
Key Properties
- **Adhesive Type:** Two-component, 10:1 mix ratio Methyl Methacrylate (MMA) structural adhesive.- **Color:** Off-White.- **Working Time:** 4-6 minutes (for SG300-05 variant).- **Fixture Time:** 15-20 minutes (time to achieve 80% of ultimate strength).- **Tensile Strength:** Typically 1,700 – 2,200 psi (12 – 15 MPa) (other variants up to >2700 psi / 19-21 MPa)- **Lap Shear Strength:** Typically 2,300 – 2,800 psi (16 – 19 MPa) (other variants up to 2,600 psi / 18-20 MPa)- **Tensile Elongation:** 40-60% (other variants up to >30%)- **Service Temperature:** -40°F to 180°F (-40°C to 82°C) (other variants up to -40°F to 300°F / -40°C to 149°C)- **Viscosity (Mixed):** 175,000-275,000 cps (Part A) and 120,000-180,000 cps (Part B) (Adhesive: 80,000-120,000 cP; Activator: 35,000-80,000 cP for a similar product)- **Density (Mixed):** 1.02 g/cc (8.51 lb/gallon).
Surface Compatibility
- **Metals:** Aluminum, Stainless Steel, Raw Steel, Carbon Steel, Coated Metals (e.g., powder-coated, e-coated).- **Composites:** Fiberglass (FRP), Carbon Fiber, Unsaturated Polyester, Vinyl Ester, Gel-coat, Sheet Molding Compound (SMC), Epoxy-based Composites, DCPD.- **Thermoplastics:** Acrylics, Acrylonitrile Butadiene Styrene (ABS), Polycarbonates, Polyvinyl Chloride (PVC), Rigid PVC, PBT, TPU, Styrenics.- **Other:** Ceramics, Wood (for certain applications).- *Note: Generally not bondable to polyolefins, thermoplastic polyesters, fluorocarbon plastics, and other low surface energy plastics without specialized formulations.*
Known backups / known substitutes
- **Other MMA Adhesives:** Other products within the SCIGRIP SG300 series (e.g., SG300-15, SG300-40 for longer working times) or similar 10:1 MMA adhesives from brands like Plexus (e.g., MA830) or Megacryl (e.g., S140-05).- **Epoxy Adhesives:** While also structural, epoxies are generally more brittle, may require more surface preparation, and do not bond dissimilar metals as well due to less flexibility for expansion/contraction.- **Polyurethane Adhesives:** Another class of structural adhesives, but MMAs often offer faster cure times and better adhesion to a wider range of plastics.- **Mechanical Fasteners:** Bolts, screws, rivets, which MMAs can replace to reduce labor, weight, corrosion, and noise/vibration, while providing a cleaner finish.- **Welding:** MMAs can replace welding, especially for dissimilar materials, offering a less labor-intensive and expensive alternative.
Comparison Note
SciGrip SG300-OW-5 stands out from many traditional structural adhesives due to its unique combination of rapid cure, high strength, and exceptional flexibility, allowing it to bond dissimilar materials like metals and plastics effectively. Unlike some epoxies, it requires minimal surface preparation and cures quickly at room temperature without external heat. Its toughened nature provides superior resistance to impact, peel, and fatigue, making it a robust choice for dynamic and demanding applications where traditional fasteners or more brittle adhesives might fail.
