Selecting Plasticizers Tackifiers for Adhesives Canada

  • Selecting Plasticizers Tackifiers for Adhesives Canada
  • Selecting Plasticizers Tackifiers for Adhesives Canada
  • Selecting Plasticizers Tackifiers for Adhesives Canada
  • What is a tackifier used for?
  • Tackifiers tend to have relatively low molecular weight with glass transition and softening temperatures that are above room temperature. They are most often used in an adhesive formulation containing a base polymer that has a Tg below room temperature. Therefore, the tackifier addition raises the Tg of the final adhesive.
  • Are Tackifiers compatible with a base polymer?
  • In order to effectively provide these modifications, tackifiers must be compatible or partially compatible with the base polymer. The first and most important criterion in the selection process is the compatibility between the tackifier and the base polymer in the adhesive formulation.
  • What are Tackifiers & plasticizers in PSAs?
  • Source: Extance, A., “Using Tackifiers and Plasticizers in PSAs”, SpecialChem, February 9, 2009. Plasticizers are organic liquids or solids that are incorporated by melt processing or diffusion into a compatible polymer to reduce interaction between molecules and improve molecular mobility.
  • Why do formulators use Tackifiers?
  • They are used to increase the tack or "stickiness" of the adhesive. In practice, formulators use tackifiers to make the correct balance between adhesion and cohesion which is dependent on the end-use application. They do this by lowering the modulus and increasing the glass transition temperature of the final adhesive.
  • Can tackifier resin be mixed into polymer dispersion?
  • Tackifier resin dispersion can be mixed into the polymer dispersion easily. The amount and type of emulsifiers used are the main factors for storage stability, compatibility, and coatability. As a result, a broad range of resin dispersions have been manufactured from rosin and hydrocarbon resin based tackifiers.
  • How much does a tackifier weigh?
  • Tackifiers typically have a molecular weight between 300 and 2,000, lower than that of the base polymer. The higher the concentration of the tackifier, the more the polymer network and overall weight of the adhesive are diluted, reducing the modulus.

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