Product Name
Seakeeper Installation Adhesive Kits and Accessories - 490ml SciGrip SG300-40 Black MMA Adhesive Kits (Toughened 10:1 ratio)
Brief Description
This product is a two-component, 10:1 mix ratio, toughened methyl methacrylate (MMA) structural adhesive, specifically formulated for high-performance bonding. It is designed to meet the stringent requirements for Seakeeper installations and other demanding applications, offering a balance of strength and toughness for various substrates.
Popular Applications & Uses
- Seakeeper Ride System installations, including for models like Ride 450, 525, 600, and 750.- Structural bonding of metals, composites, and plastics in various assemblies.- Automotive components, such as bonding panels, brackets, and interior/exterior parts.- Marine assemblies, including fiberglass, composite materials, hulls, deck liners, and internal fixtures.- General manufacturing and repair applications requiring strong, durable bonds.- Construction for bonding metal, concrete, and other materials.- Bonding magnets in loudspeakers and electric motors.- Attaching panels and components in heavy trucks, rail vehicles, buses, and agricultural/construction machinery.
Industries that Commonly Use It
- Marine- Transportation/ Specialty Vehicle- General Manufacturing- Metal Fabrication- Plastic Fabrication- Construction/ Building Services- Automotive Service/Repair- Aerospace/Defense
Special and Unique Features
- **Primerless Metal Bonding:** Bonds most metals without the need for surface primers, simplifying preparation and improving efficiency.- **Reduced Bond Line Read-Through:** Minimizes the visibility of adhesive lines for a clean, finished appearance on show surfaces.- **High Viscosity - Non-Slump Application:** Ensures precise placement, especially on vertical or inverted surfaces.- **High Impact Strength & Fatigue Endurance:** Provides durable and elastic bonds that resist fatigue, impact, and shock loads while maintaining flexibility.- **Fast Cure System:** Achieves rapid strength development at room temperature, allowing for quicker handling and increased productivity.- **Permanent Toughness:** Formulated with toughening agents to improve overall tensile strength and resistance to peeling and impact damage.- **Bonds Dissimilar Materials:** Effectively joins a wide range of materials, including flexible plastics and rigid metals, accommodating differential thermal expansion and contraction.- **Less Sensitive to Mixing Ratios:** Compared to some other two-part adhesives, MMAs are more tolerant of slight variations in mix ratios.
Key Properties
- **Mix Ratio:** 10:1 by volume.- **Working Time (Pot Life):** 35-45 minutes for SG300-40.- **Fixture Time:** 80-90 minutes (time to achieve 80% of ultimate strength in lap shear).- **Color:** Black (also available in off-white for other SG300 series variants).- **High Strength:** Excellent shear, peel, and impact resistance.- **Temperature Tolerance:** Excellent temperature tolerances, remaining flexible at low temperatures and suitable for wide temperature fluctuations (-40°C to 120°C).- **Environmental Resistance:** Excellent resistance to environmental factors, solvents, chemicals, and weather.- **Gap Fill:** Capable of filling large gaps, typically 0.02 - 0.375 inches (0.50 - 9.5 mm).- **Low VOC Emissions:** Generally offers low VOC emissions.- **Non-Sag:** High viscosity ensures non-slump application.
Surface Compatibility
- **Metals:** Acrylic, PVC, ABS, Coated & Bare Metals (Aluminum, Carbon Steel, Stainless Steel).- **Composites:** Thermoset Composites (Vinylester, Polyester, Gelcoats, Epoxy), Fiberglass, Carbon Fiber, Sheet Molding Compound.- **Plastics:** Acrylics, ABS, PVC/CPVC, Styrenics, Polycarbonates.- **Note:** Generally not bondable with polyolefins, thermoplastic polyesters, fluorocarbon plastics, and other low surface energy plastics without special formulation.
Known backups / known substitutes
- **Plexus MA685:** Previously a common alternative, but now discontinued. Maven MMA 4085 is suggested as a substitute for solid surface seaming applications.- **Other SciGrip SG300 Series:** Other variants like SG300-05 (5-minute working time) or SG300-15 (15-minute working time) depending on application needs.- **Infinity Bond MMA Adhesives:** Products like Infinity Bond MMA 300, MMA 310, MMA 500, or MMA 1025 are general MMA alternatives for various substrates and cure times.- **Other Structural Acrylic (MMA) Adhesives:** Various brands offer similar two-part MMA adhesives for structural bonding.- **Epoxy Adhesives:** While also structural, epoxies have different properties (e.g., higher shear/tensile strength, better chemical/heat resistance, but longer cure times and more brittle).- **Polyurethane Adhesives:** Another structural adhesive type, but MMAs offer higher bond strength, better impact/fatigue resistance, faster cure, and do not contain isocyanates.
Comparison Note
SciGrip SG300-40 MMA adhesive offers significant advantages over traditional joining methods like welding or mechanical fasteners by providing strong, durable bonds with minimal surface preparation and without adding extra weight or bulk. Compared to urethanes, MMAs generally have higher bond strength and superior impact and fatigue resistance. They are less brittle than epoxies, making them more suitable for bonding dissimilar materials with different flexibilities and less prone to cracking under impact or vibration. While epoxies may offer higher ultimate tensile and shear strengths and better chemical/heat resistance, MMAs provide faster cure times, are less sensitive to mixing ratios, and excel in applications requiring flexibility and impact resistance.
