• Description for Henkel 581

    • Non Corrosive • Structural Acrylic Adhesive • Vapors are Non-Corrosive to Copper Surfaces • Room Temperature Cure • Fixtures Parts in 15 to 30 seconds • 50% Strength Obtained in 15 minutes • Excellent Adhesion to Magnet and Metal Surfaces • Environmentally Friendly – 100% Solids • No Mix Application<br/>• Non-Drip Rheology •<br/>

    *See Terms of Use Below

    Brand Bondmaster
    Application Type Bond
    1 Part or 2 Part 2 Part
    Material Form Liquid
    Substrate Glass, Alnico, Rigid Plastics, Steel, Epoxy-Coated Metal, Ferrite, Metals, Painted Metal
    Industry DC motors, Motors, Electrical, Magnet, Sensors, FlyWheels, Automotive, Generators
    Manufacturer Henkel
    Chemistry Acrylic
    Cure Method Moisture
    Cure Temperature (°C) 20 to 25, 20 to 25
    Cure Time (min) Rapid, 60
    Viscosity (cPs) 15,000
    Color Blue, Gray
    Chemical Resistance Salt Spray
    High Temperature Resistance (°C) 155
    Low Temperature Resistance (°C) -65
  • Technical Data for Henkel 581

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 2 Part
    • Material Form
      • Liquid
    • Substrate
      • Glass
      • Metal - Alnico, Epoxy-Coated Metal, Ferrite, Metals, Painted Metal
      • Steel
      • Plastic - Rigid Plastics
      • Other - Rare earth
    • Industry
    • Chemistry
    • Application Method
      • Brush - Wipe
      • Spray
    • Cure Method
      • Moisture / Condensation Cure - Moisture
    • Color
      • Blue
      • Gray
    • Brand
      • Bondmaster
    Specifications
    Cure Specs
    Cure Temperature (°C) 20 to 25, 20 to 25
    Cure Time (min) Rapid, 60
    Viscosity (cPs) 15,000 Test Method
    Fixture or Handling Strength Time (min) 0.25 to 0.50 Test Method
    Work / Pot Time (min) >30 Test Method
    Mix Ratio 30:1 (by volume)
    Bond Strength
    General Bond Strength (psi) Excellent
    Peel Strength (piw) 10 to 15 Test Method
    Shear Strength (psi) High, 3,000 to 3,500, 2,000, 250 Test Method
    Impact Strength (psi) High, 10 to 12 Test Method
    Material Resistance
    Chemical Resistance Salt Spray
    High Temperature Resistance (°C) 155
    Low Temperature Resistance (°C) -65
    Other Properties
    Specific Gravity 1.100
    Flash Point (°F) >16,772.0
    % Solids (%) 100
    Business Information
    Shelf Life Details Shelf Life Test Method, Bondmaster 581 should be stored in a cool place, 0oC to 24oC (32oF to 75oF), and kept away from excessive heat, sparks, flame, and sunlight. When stored properly, the adhesive has a shelf life of six months. Refrigeration will extend the shelf life of the adhesive.
    Shelf Life (mon) 6, 6
    Not Good For
    Don't Use With Delrin, Polyethylene, Polyproplene, Polyurethane, Any type of elastomer, Acetal
  • Best Practices for Henkel 581

    *See Terms of Use Below

    1. Surface Preparation

      The 581 adhesive requires no surface preparation on most metal, ferrite, and glass surfaces. For optimum bond strength on metal parts, the surface should be washed with a solvent or cleansing solution, abraded with an abrasive pad, and then rinsed with a solvent or cleansing solution. Glass surfaces should be cleaned with a commercial glass cleaner before bonding. Painted surfaces should be abraded lightly and then wiped clean.

    2. Application

      Apply Bondmaster 534 Activator by spraying, wiping, or brushing a thin film of the activator on one of the bonding surfaces.

      Apply Bondmaster 581 Non-Corrosive Structural Adhesive to the bond area on the non-activated bonding surface.

      Join the surfaces as soon as possible and apply sufficient pressure to maintain intimate contact between the parts until handling strength is obtained.

      A 15 - 30 second clamp time is usually required for bonding of parts with minimal gap.

    3. Mixing

      Bondmaster 581 should not be mixed with 534 Activator in large quantities, as a vigorous chemical reaction will occur generating a significant amount of heat and vapors.

    4. Clean-Up

      Unreacted adhesive can be cleaned up using acetone, isopropanol, or MEK.

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Fixture or Handling Strength Time Test Methods
Fixture or Handling Strength Time Fixture-Handling Strength Time Temperature
0.25 to 0.50 min 25°C
Viscosity Test Methods
Viscosity Test Method Temperature
15,000 cPs Viscosity, Brookfield, 25oC @ 20 rpm 25°C
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
>30 min The open time refers to the on-part life of the adhesive. 25°C
Shear Strength Test Methods
Shear Strength Substrate Test Method
High
3,000 to 3,500 psi Steel/Steel ASTM D1002
2,000 psi Ferrite / Steel ASTM D1002, Substrate failure
250 psi Glass/Glass ASTM D1002, Substrate failure
Peel Strength Test Methods
Peel Strength Substrate Test Method
10 to 15 piw Steel/Steel ASTM 1876
Impact Strength Test Methods
Impact Strength Substrate Test Method
High
10 to 12 psi Steel/Steel ASTM 950