Henkel 581

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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/>

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Brand	Bondmaster
Chemical Resistance	Salt Spray
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	Electrical, Automotive, Magnet, Sensors, FlyWheels, DC motors, Motors, 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
High Temperature Resistance (°C)	155
Low Temperature Resistance (°C)	-65

Best Practices for Henkel 581

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Technical Data for Henkel 581

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Overview

Chemical Resistance
- Chemical Resistance - Salt Spray
Application Type
- Adhesive - Bond
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
- Automotive
- Electronics - Electrical, Generators
- Sensors
- Speakers - Loud Speakers
- Magnet
- Industrial Wheels - FlyWheels
- Motors - DC motors
- Appliances
- Furniture / Wood-Working - Furniture
Chemistry
- Acrylic
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

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

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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.
Comparable Materials for Henkel 581

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Spec Engine^® Results
- Sikafast 3551(Sika)
  It is a long open time, flexibilized structural adhesive designed to substitute welding, riveting and other mechanical fastening. It is suitable for high strength fastening of joints on different types of substrates including topcoats, metals, and plastics with no or limited surface preparation.
- Loctite 3092(Henkel)
  A two-component rapid cure cyanoacrylate adhesive which is used for bonding a variety of plastics, rubber and porous materials (wood, paper, leather).
- Sikafast 3511(Sika)
  A fast curing, 1:1 ratio two-component adhesive system based on methyl-methacrylate (MMA) polymer technology.
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