Applications

Plexus® MA310

Package Sizes:

  • Cartridges:
    • 50 mL Cartridge
    • 400 mL Cartridge
  • Bulk Containers:
    • 5-Gallon (20 L) Pails
    • 50-Gallon (200 L) Drums

Shelf Life: 7 months

Product Description

Plexus® MA310 is a two-part methacrylate adhesive designed for structural bonding of thermoplastics, metals, and composite assemblies. It has a 1:1 mix ratio by volume, a work life of 15 to 20 minutes, and reaches handling strength (500 psi) in 44 to 46 minutes at 75°F (23.9°C). The product is supplied in ready-to-use cartridges and bulk packaging and dispenses as a non-sagging gel.


Key Features

  • Medium Cure Speed: Achieves handling strength in approximately 44-46 minutes.
  • High Strength & Toughness: Strong bonds on metals, composites, and thermoplastics.
  • Wide Material Compatibility: Bonds aluminum, stainless steel, ABS, acrylic, PVC, fiberglass, and more.
  • Minimal Surface Preparation: Bonds many materials without extensive surface prep.
  • Excellent Impact Resistance: Durable under dynamic loads.

Recommended Applications

  • Transportation: Bonding composite and metal components in automotive, marine, and aerospace.
  • Construction: Structural bonding of composite and thermoplastic panels.
  • Industrial Equipment: Bonding metals and plastics in general manufacturing.
  • Sporting Goods: Used in assembly of lightweight and impact-resistant components.

Typical Uncured Physical Properties

Property Part A (Adhesive) Part B (Activator)
Color Off-White Yellow
Viscosity 40,000 – 70,000 cP 40,000 – 70,000 cP
Density 0.99 g/mL 0.96 g/mL
Mix Ratio (by volume/weight) 1:1 1:1
Work Life 15 – 20 minutes at 75°F (23.9°C)
Peak Exotherm Temperature (10g mass) 200°F (93°C)

Typical Cured Physical Properties

Property Value
Color Off-White
Shore D Hardness 80
Elongation at Break 20 – 40%
Tensile Strength 4,410 – 5,390 psi (30.4 – 37.2 MPa)
Tensile Modulus 238 – 322 kpsi (1,641 – 2,220 MPa)
VOC Content < 0.5%
Gap Tolerance 0.01 – 0.125 in (0.25 – 3.2 mm)

Performance Characteristics

Overlap Shear Strength (ASTM D1002, Typical Values)

Substrate Lap Shear Strength (psi/MPa) Failure Mode
Aluminum 3,378 psi (23.3 MPa) Adhesive Failure (AF)
Stainless Steel 3,519 psi (24.3 MPa) Cohesive Failure (CF)
PVC 1,371 psi (9.5 MPa) Substrate Failure (SF)
Polyester 2,600 psi (17.9 MPa) Substrate Failure (SF)

Cure Profile at Different Temperatures

Temperature Work Time Time to 50 psi Time to 500 psi Time to 1000 psi
60°F (15.6°C) 19 – 20 min 46 min 52 min 58 min
75°F (23.9°C) 15 – 18 min 38 – 40 min 44 – 46 min 48 – 50 min
90°F (32.2°C) 8 – 9 min 20 – 22 min 24 min 25 min

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