LORD Signlok 406 Fast Setting 6-10 minute Non-Sag Temperature Resistant MMA Adhesive

Product Name

LORD Signlok 406 Fast Setting 6-10 minute Non-Sag Temperature Resistant MMA Adhesive

Brief Description

LORD Signlok 406 is a two-component, structural acrylic (MMA) adhesive system engineered for high-strength bonding of a wide variety of prepared or unprepared metals and engineered plastics. It offers fast setting, non-sag properties, and excellent temperature resistance, serving as a robust alternative to traditional mechanical fastening methods like welding, brazing, and riveting.

Popular Applications & Uses

- Sign fabrication and architectural applications.- Replacing welding, brazing, riveting, and other mechanical fastening methods in various industries.- Bonding metals such as steel, stainless steel, and aluminum.- Adhering engineered thermoplastics including XENOY®, polycarbonate, ABS, and acrylics.- Joining composites like fiberglass, carbon fiber, unsaturated polyester, vinyl ester, gel-coat, sheet molding compound, and epoxy.- Assembly of components in trucks and construction equipment, such as side and roof panels, door panels, and aerodynamic parts.- Bonding magnets to metal housings in electric motor manufacturing.- Marine applications, including bonding hulls, deck liners, ski boats, yachts, internal fixtures, canoes, and kayaks.- Bonding aluminum composite panels to building structures.- Securing composite flooring to wood floors in vehicles.- Bonding spoilers and bumpers in automotive lightweight vehicles.- Assembly of elevators and storage tanks.

Industries that Commonly Use It

- Sign & Display- General Manufacturing- Metal Fabrication- Plastic Fabrication- Transportation/ Specialty Vehicle (including Automotive, Marine, Heavy Trucks, Rail Vehicles, Buses, Agricultural and Construction Machinery)- Aerospace/Defense- Construction/ Building Services

Special and Unique Features

- Fast setting with a 6-10 minute work time and 12-17 minute handling strength.- Non-sag formula, ideal for vertical or overhead applications, providing greater process flexibility.- Wide temperature resistance, performing effectively from -40°F to +300°F (-40°C to +149°C).- Excellent environmental resistance to dilute acids, alkalis, solvents, greases, oils, moisture, salt spray, weathering, and indirect UV exposure.- UL Recognized (UL 746C / UL 879 certified).- Contains glass beads for precise control of adhesive bondline thickness.- Delivers some of the highest impact and peel strengths available in a room temperature curing adhesive.- Capable of bonding a wide range of unprepared metals with minimal surface preparation.- Effectively bonds dissimilar materials, offering design freedom.

Key Properties

- Adhesive Type: Two-component Methyl Methacrylate (MMA) / Structural Acrylic Adhesive- Mix Ratio: 2:1 (adhesive to accelerator by volume)- Work Time: 6-10 minutes- Handling Strength: 12-17 minutes- Full Cure Time: 24 hours at room temperature (can be accelerated with modest heat <150°F / <66°C)- Operating Temperature Range: -40°F to +300°F (-40°C to +149°C)- Appearance: Tan Paste (Part A), Off-white Paste (Part B)- Density (Part A): 9.25 - 9.55 lb/gal (1108 - 1144 kg/m3)- Density (Part B): 12.15 - 13.2 lb/gal (1456 - 1581 kg/m3)- Flash Point (Part A): 59°F (15°C)- Flash Point (Part B): ≥200°F (≥93°C)- Shelf Life: 18 months when stored below 80°F (27°C), with 40-50°F (4-10°C) recommended.

Surface Compatibility

- Prepared or unprepared metals, including steel, stainless steel, and aluminum.- Engineered thermoplastics such as XENOY®, polycarbonate, ABS, and acrylics.- Various composite materials, including fiberglass, carbon fiber, unsaturated polyester, vinyl ester, gel-coat, sheet molding compound, and epoxy.- Other substrates like glass, wood, and magnets.- Tolerant of normal amounts of mill oils and drawing compounds on metal surfaces.- Most plastics require simple cleaning; some may benefit from abrading for optimal performance.

Known backups / known substitutes

- Other LORD Signlok series adhesives, such as LORD Signlok 403, LORD Signlok 810, and LORD Signlok 7550.- LORD 406/19, which is an industrial version of the adhesive.- Other LORD acrylic adhesives like LORD Maxlok MX/T3, MX/T6, and MX/T18.- SikaFast products, which are general MMA adhesive alternatives.- Other Methyl Methacrylate (MMA) adhesives from manufacturers such as H.B. Fuller, Permabond, Forgeway, and Maven.- Epoxy adhesives, though MMAs typically offer superior peel strength, temperature resistance, and faster cure speeds.

Comparison Note

LORD Signlok 406, as an MMA adhesive, provides significant advantages over traditional mechanical fastening methods like welding, brazing, riveting, screws, and bolts. These benefits include high bond strength, faster production cycles, the ability to bond dissimilar materials, and potential reductions in labor and material costs. When compared to epoxy adhesives, MMAs generally exhibit higher peel strength, better temperature resistance, and more rapid strength development, although they may have a more pronounced odor and are flammable. Within the LORD Signlok 400 series, the 406 is considered an intermediate option in terms of speed, with the 403 being faster and the 410 being slower.