Product Name
Devcon Plastic Welder White DA291 (50ml) & DA160 (400ml) - High-Strength Toughened MMA Adhesive
Brief Description
Devcon Plastic Welder White is a two-part, high-strength, toughened Methyl Methacrylate (MMA) structural adhesive designed for creating durable, load-bearing bonds across a wide range of materials. It offers superior impact and peel resistance, making it ideal for demanding applications where traditional fastening methods may fall short. This adhesive cures rapidly at room temperature and requires minimal surface preparation.
Popular Applications & Uses
- Bonding various plastics such as ABS, PVC, SMC, composites, polyesters, and polycarbonates.
- Structural bonding in automotive and transportation sectors for components, interiors, and exteriors.
- Marine applications for bonding fiberglass, plastics, and other materials, offering resistance to water and harsh environmental conditions.
- Construction for bonding metal, concrete, wood, and other building materials, including flooring installation in high-traffic areas.
- Solid surface seaming in countertop manufacturing.
- General manufacturing and assembly operations requiring strong, flexible bonds between dissimilar materials.
- Bonding magnets in electric motor manufacturing.
- Repair and maintenance in aerospace applications.
Industries that Commonly Use It
- Automotive Service/Repair: For bonding parts and components, often as a substitute for welding or mechanical fastening.
- Construction/ Building Services: Used for bonding metal, concrete, wood, and other materials, including flooring.
- Fabrication: Essential in both plastic and metal fabrication for creating strong, durable assemblies.
- General Manufacturing: For various product assembly and manufacturing operations.
- Marine: Ideal for bonding fiberglass, plastics, and other materials in boats and marine vessels due to water resistance.
- Transportation/ Specialty Vehicle: Widely used in heavy trucks, rail vehicles, buses, agricultural, and construction machinery for bonding diverse materials.
- Aerospace/Defense: For structural bonding of advanced materials and repairs.
- Countertop: Specifically for solid surface seaming applications.
- Electrical Services or Products: For bonding magnets in electric motors and loudspeakers.
- Distributers & Resellers: As a widely distributed industrial adhesive product.
Special and Unique Features
- High-Strength Toughened Formula: Provides superior impact, peel, and shear resistance, creating load-bearing bonds.
- Minimal Surface Preparation: Can bond effectively to slightly oily, unclean, or uneven surfaces, reducing prep time and cost.
- Bonds Dissimilar Substrates: Capable of bonding a wide variety of materials, including different plastics, metals, wood, and ceramics.
- Weather and Temperature Resistant: The cured bond is resistant to weathering, humidity, and wide temperature variations.
- Rapid Fixture Time: Allows for quick handling and faster production cycles.
- Non-Sagging Formula: Ideal for vertical and overhead applications.
- White Color Stability: The white color will not fade or turn with time.
Key Properties
- Adhesive Type: Two-part Methyl Methacrylate (MMA) structural adhesive.
- Color: White.
- Mix Ratio: 1:1 by volume.
- Working Time: Typically 2-3 minutes (can vary slightly, some sources indicate 4-6 minutes).
- Fixture Time: Achieves handling strength in 8-15 minutes (some sources indicate 20-25 minutes).
- Functional Cure: Approximately 1 hour.
- Full Cure: 24 hours to 7 days for maximum properties.
- Service Temperature Range: -67°F to 250°F (-55°C to 121°C).
- Shear Strength: Up to 3500 psi (e.g., 1300 psi for ABS, 1400 psi for Polycarbonate, 3000 psi for GBS, 20.6 MPa for grit blasted steel).
- Peel Strength: 35-40 pli (pounds per linear inch) or 6 kg/cm.
- Gap Fill: Up to 0.125 inches (3.175 mm) or 6.35mm.
- Shore Hardness: 75-78 Shore D.
Surface Compatibility
Devcon Plastic Welder White is highly versatile and bonds to a broad spectrum of materials, including:
- Plastics: ABS, PVC, SMC, composites, polyesters, polycarbonate, strenics, PET, fiberglass, FRT, PPO, PCBB, Metton®, Lomod®, Valox®, Noryl®, GTX, Minlon®, RIM urethane, acrylics, polystyrene, vinyls.
- Metals: Steel, stainless steel, aluminum, galvanized metal. (Note: For stainless steel and aluminum, using Devcon Metal Prep 90 can improve bond strength by 30-40%).
- Other: Wood, concrete, ceramic, epoxy.
Not Recommended For: Copper and brass, as these metals can inhibit MMA curing.
Known backups / known substitutes
Several other high-performance MMA structural adhesives can serve as alternatives or backups, offering similar properties and applications:
- Plexus MA300 MMA Structural Adhesive
- UltraLok® 300 MMA Structural Adhesive
- Infinity Bond MMA 310, MMA 420, MMA 500 (various formulations for different set times and difficult plastics)
- 3M DP8705NS (low-odor, non-sagging MMA)
- Loctite H3000 (high-strength structural adhesive)
- SCIGRIP MMA structural adhesives (e.g., SG100, SG200 series)
- LORD MMA adhesives
- ASI MMA adhesives
Comparison Note
Devcon Plastic Welder White, as an MMA adhesive, offers distinct advantages over traditional epoxies, especially for plastic bonding. MMAs are generally superior for bonding plastics due to their inherent chemical interaction (solvent action) with many plastic substrates, leading to a strong fusion. They require less rigorous surface preparation, tolerate some contamination, and provide faster cure times, which is beneficial for high-speed production. MMAs also exhibit higher peel strength, better impact resistance, and greater flexibility, making them suitable for bonding dissimilar materials with different thermal expansion rates. In contrast, epoxies can be more sensitive to surface cleanliness and may be too rigid for certain plastic applications, potentially leading to brittle bonds. However, epoxies generally have a longer shelf life and less odor. While some general-purpose epoxies perform well on metal-to-metal bonds, MMA adhesives like Devcon Plastic Welder are specifically engineered for the challenges of bonding plastics and dissimilar substrates with high performance.
