PLEXUS MA590 - 5 Gallon Pail Adhesive IT177

Product Name

PLEXUS MA590 - 5 Gallon Pail Adhesive IT177

Brief Description

Plexus MA590 is a two-part methacrylate adhesive engineered for the structural bonding of thermoplastic, metal, and composite assemblies. It is characterized by its exceptionally long working time and high gap-filling capabilities, making it suitable for large-scale applications.

Popular Applications & Uses

- Structural bonding of thermoplastic, metal, and composite assemblies.- Bonding stringers and liners into large fiberglass boats, with bond lines up to one inch (25mm) thick.- Applications requiring a very long open time.

Industries that Commonly Use It

- Marine- Transportation/ Specialty Vehicle- General Manufacturing- Plastic Fabrication- Metal Fabrication- Fabrication (for composites)

Special and Unique Features

- Extra long working time of 90 to 105 minutes.- Excellent fatigue endurance.- Outstanding impact resistance.- Superior toughness.- High gap-filling capability, up to 1.5 inches (38 mm).- Dispensed as a non-sagging gel.- Room temperature cure.- Requires little to no surface preparation for many substrates.

Key Properties

- **Type:** Two-part methacrylate adhesive.- **Mix Ratio:** 1:1 by volume.- **Working Time:** 90 to 105 minutes.- **Fixture Time:** 4 to 6 hours (250 to 380 minutes).- **Operating Temperature:** -40°F to 180°F (-40°C to 82°C).- **Tensile Strength:** 2,000 – 2,500 psi (13.8 – 17.2 MPa).- **Shear Strength:** 1,500 – 2,500 psi (10.3 – 17.2 MPa).- **Tensile Elongation:** >130%.- **Mixed Density:** Approximately 7.83 lbs/gal (0.94 g/cc).- **Color (Mixed):** Gray.- **Chemical Resistance:** Excellent resistance to hydrocarbons, acids and bases (pH 3-10), and salt solutions.- **Flammability:** Flammable (contains methacrylate esters).

Surface Compatibility

- ABS- Acrylics- FRP (Fiber Reinforced Plastic)- Gelcoats- PVC- Polyesters (including DCPD modified)- Styrenics- Urethanes (general)- Vinyl Esters- Metals: Stainless Steel (Plexus Primer suggested), Aluminum (Plexus Primer suggested), Raw Steel (Plexus Primer suggested).

Known backups / known substitutes

- Other Plexus MA series adhesives (e.g., MA560-1, MA1025, MA830, MA422, MA425, MA530, MA550)- Resinlab AR4315 Bonding Adhesive- Weld On (methacrylate structural adhesives)- Brands like 3M Adhesives, ASI MMA, LOCTITE Acrylics, LORD, SCIGRIP, SikaFast, Devcon, Infinity Bond.

Comparison Note

Plexus MA590 stands out due to its very long open time (90-105 minutes) and significant gap-filling capabilities (up to 1.5 inches), making it particularly well-suited for large structural bonding applications, especially within the marine industry for bonding stringers and liners into fiberglass boats. While other methacrylate adhesives offer similar strength and impact resistance, MA590's extended working life is a key differentiator for complex or large-scale assemblies where more time is needed for positioning and fixturing.