Applications

Plexus® MA1020

Brand: Plexus®

Package Sizes:

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

Shelf Life:

  • 10 months for standard colors (Blue).
  • 7 months for Black color

Product Description

Plexus® MA1020 is a two-part methacrylate adhesive designed for structural bonding of thermoplastics, metals, and composite assemblies. It is formulated with a 10:1 mix ratio, a working time of 5 to 6 minutes, and achieves 75% of ultimate strength in 15 to 20 minutes at 74°F (23°C).

This adhesive is a breakthrough in methacrylate adhesive technology, offering very low cure shrinkage and very low odor while maintaining high strength, excellent fatigue endurance, and superior toughness.

MA1020 is blue when mixed and is supplied in ready-to-use cartridges, pails, or drums. It dispenses as a non-sagging gel.


Key Features

  • Low Odor Formula: Ideal for sensitive working environments.
  • Minimal Shrinkage: Ensures high precision and reduced bond-line movement.
  • High Strength & Toughness: Provides high cohesive strength and durability.
  • Minimal Surface Preparation: Bonds many materials without extensive surface prep.
  • Excellent Impact & Fatigue Resistance: Durable under dynamic loads.
  • Moderate Work Time: Provides 5-6 minutes of work life.

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 Blue or Black
Viscosity 100,000 – 130,000 cP 35,000 – 80,000 cP
Density 0.93 g/mL 1.07 g/mL
Mix Ratio (by volume/weight) 10:1 / 8.80:1
Peak Exotherm Temperature (10g mass) ~245°F (118°C)
Peak Exotherm Time (10g mass) 10 – 11 minutes
VOC Content < 1%

Typical Cured Physical Properties

Property Value
Color Blue
Shore D Hardness 65
Elongation at Break 10 – 20%
Tensile Strength 1,305 – 1,595 psi (9.0 – 11.0 MPa)
Tensile Modulus 94 – 127 kpsi (645 – 872 MPa)
Gap Tolerance 0.03 – 0.375 in (0.75 – 9.5 mm)

Performance Characteristics

Overlap Shear Strength (ASTM D1002, Typical Values)

Substrate Lap Shear Strength (psi/MPa) Failure Mode
Aluminum 6061 1,919 psi (13.2 MPa) Cohesive Failure (CF)
Powder Coated Steel 1,135 psi (7.8 MPa) Adhesive Failure (AF)
Carbon Fiber 1,475 psi (10.2 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) 4 – 5 min 10 – 11 min 13 – 14 min 15 – 16 min
75°F (23.9°C) 5 – 6 min 8 – 10 min 10 – 12 min 12 – 14 min
90°F (32.2°C) 3 – 4 min 7 – 8 min 9 – 9.5 min 9.5 – 10 min

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