Primers and adhesion promoters are applied to a substrate to enhance the bond strength between a surface coating (e.g. paints, base coats, adhesives) and the substrate. They differ in terms of:

 

Primers and Adhesion Promoters Information

  • Type and chemistry
  • Substrate compatibility
  • Technology
  • Application method
  • Color
  • Finish

Primers and adhesion promoters are used in a variety of industrial and commercial

applications, and in many different industries. They are applied to:

 

  • Ceilings
  • Decks
  • Floors
  • Roofs
  • Pavement
  • Walkways
  • Walls

Processing characteristics include:

 

  • Coverage
  • Cure or dry time
  • Curing or drying temperature
  • Use temperature
  • Pot-life time

Chemistry

 

Primers and adhesion promoters differ widely in terms of chemistry and substrate. Choices for chemistry include:

 

  • Acrylic
  • Cement
  • Ceramic
  • Glass
  • Metal filler
    Primers and Adhesion Promoters Information
  • Polyurethane
  • Silicone
  • Silver filled
  • Stainless steel filled
  • Vinyl

  • Wax

Substrate Compatibility

 

There are also many choices for substrate. Examples include:

 

  • Asphalt
  • Bitumen or coal tar
  • Concrete or masonry
  • Fiberglass
  • Food
  • Glass
  • Graphite
  • Metal
  • Paper
  • Rubber
  • Steel
  • Wood

Curing / Setting Technology Specifications

 

Technology is an important specification to consider when selecting primers and adhesion promoters. Film drying or air setting forms a continuous, dry film from a binder that can be pigmented. The evaporation of the solvent, carrier, or thinner sets the coating.

 

Laser marking uses a laser beam to fuse the coating, ink, or marking material with the substrate’s surface. Multi-component coating systems and adhesion promoters use a polymeric protective film that applies a primer or prime coat, intermediate coat, and/or finish coat. Reactive or moisture-cured, thermoplastic, thermosetting and ultraviolet (UV) irradiating products are available.

 

Features 

 

Primers and adhesion promoters are available as:

 

  • Aerosols
  • Cartridges
  • Films
  • Liquids
  • Markers
  • Pastes
  • Powders
  • Solids

Solvent-based primers primarily use volatile organic compounds (VOCs) as the carrier. Water-based primers and adhesion promoters use water as the primary carrier, but may also contain chemicals such as glycol ethers, alcohols, and other water-soluble VOCs.

 

In terms of application method, primers and adhesion promoters may be applied with:

 

  • Autophoretic processes
  • Brushes

    Primers and Adhesion Promoters Information

  • Curtains
  • Dip or immersion techniques
  • Electrostatic methods
  • Electrocoating
  • Rollers
  • Screens
  • Spins
  • Sprays

Colors vary widely and finishes include:

 

  • Flat
  • Satin
  • Semi-gloss
  • High-gloss

Standards

 

9984262 - Primer (adhesion promoter) - nonconductive, interior, for olefinicplastics.

DELPHI DX010047 - Primer (adhesion promoter) - nonconductive, interiors, for olefinic plastics.

FORD FLTM AU 101-01 - Silane adhesion promoter - solids and ash content.

SAE AMS3100 - Adhesion promoter for polysulfide sealing compounds.

DELPHI DX810001 - AZKO nobel's 660-pob waterbased topside adhesion promoter for vacuum formed tpo sheet instrument panels. 

 

References

 

Image Credits:

 

Aron Alpha Industrial Krazy Glue | W.M. Barr & Co. | 3M Industrial Adhesives & Tapes Canada