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The material selection platform
Adhesives Ingredients
The material selection platform
Adhesives Ingredients

General Purpose Cyanoacrylate Adhesive

Adhesives Formulation

Applicable Type
Applicable Base Polymer

Applicable Base Polymer Properties

Cyanoacrylate adhesives are solvent-free, one-part formulations that cure rapidly when pressed into a thin film between two substrates. Cyanoacrylate adhesives are generally methyl or ethyl cyanoacrylate-based, single component liquids. Cyanoacrylate adhesives bond well to many substrates. When bonding metals and other rigid surfaces, methyl cyanoacrylate bonds are stronger and more impact resistant than ethyl cyanoacrylate bonds. However, on rubber or plastic surfaces, ethyl cyanoacrylate is preferred.

Typical Formulation Ingredients

Phase
Ingredient
Parts by weight
Cyanoacrylate monomer (ethyl cyanoacrylate) 
xxxxx 
Poly (methyl methacrylate), thickening agent (Plexidon® M449, Evonik, Rohm) 
x 
Fumed silica (Aerosil® R972, Evonik) 
x 
Phosphorous pentoxide, stabilizer 
xxxx 
Hydroquinone, stabilizer 
xxxx 

Processing

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Resulting Properties

Cyanoacrylate adhesives cure rapidly at room temperature to form rigid thermoplastics with excellent adhesion to most substrates. Cyanoacrylates typically reach handling strength within one minute at room temperature and achieve full strength in 24 hours. A typical formulation for an ethyl cyanoacrylate adhesive is shown in the above table. Typically, unmodified cyanoacrylate adhesives have a high lap shear strength, on the order of 2000-3000 psi, on most substrates.

  • Ease of use
  • Rapid set (seconds to minutes)
  • High bond strength (up to 25 MPa tensile shear strength)
  • Good adhesion to a large number of substrates, including metals and plastics

Tips and Tricks

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