BadAss Custom Coatings

Understanding Adhesion Promoter

What is automotive adhesion promoter?

Adhesion promoters are used to improve the bonding of plastics, composites and metals during the production of car parts and components. They are primarily utilized to improve the adhesion of coatings, paints, sealants and adhesives to surfaces that may be difficult to bond to, including low-surface-energy plastics.

Summary – Adhesion Promoter vs Primer

The key difference between adhesion promoter and primer is their function; adhesion promoters act as additives for the paint to promote the adhesion of the paint film to the substrate, but adhesion primers conserve the surface of a material having bonded in a later

Can you paint directly over adhesion promoter?

A: Yes you could but the adhesion promoter would be best used after the primer is applied and prepped. Adhesion promoter for your base coat. Adhesion promoter is made to paint stick if you use a good primer you shouldn’t have any problems with the primer.

Do I wait for adhesion promoter to dry?

You should always wait for promoter to be dry to touch.

How long do you let adhesion promoter dry before painting?

Dry and recoat times are based on 70°F and 50% relative humidity. Allow more time at cooler temperatures. Dries to touch in 10 minutes and dries to handle in 15-30 minutes. A topcoat must be applied within 10 minutes after primer application.

Do you sand plastic before adhesion promoter?

New Unprimed Parts

The part must be sanded and cleaned, then anti-static and/or adhesion promoter is applied. The part is then sealed, color coated and clear coated.

Should I use primer or adhesion promoter?

Summary – Adhesion Promoter vs Primer

The key difference between adhesion promoter and primer is their function; adhesion promoters act as additives for the paint to promote the adhesion of the paint film to the substrate, but adhesion primers conserve the surface of a material having bonded in a later stage.

The adhesion promoter should be dry before applying the tape. For best results, apply tape within one hour after applying the adhesion promoter. Be sure the primer surface remains free from contaminants prior to laminating the tape.

What type of plastic requires adhesion promoter?

Plastic Categories: Thermoset and Thermoplastic

Plastics that melt are known as thermoplastics. These plastics are semi-rigid and typically require an adhesion promoter.

Will automotive paint stick to plastic?

Paints in auto-parts and hardware stores, however, are quite the opposite. Most of these fast-drying paints contain “hot” solvents that can damage plastic. To use one of these hot paints on plastic, you’ll need a barrier of primer between the paint and the plastic.

Does adhesion promoter work on rubber?

It’s designed to help our 3M™ Acrylic Foam and Acrylic Plus Tapes adhere to substrates which are typically difficult to form an adhesive bond against. This includes surfaces to Polyolefin-based substrates such as thermoplastic olefins (TPO), Polypropylene (PP) and EPDM rubber.

What are the different types of adhesion promoters?

Adhesion Promoters Classes & Key Characteristics             Type Inorganic Groups Molecular Stability

Zirconate -OR Fair/good

Zircoaluminate -OH, -Cl Excellent

Alkyl phosphate ester -OH Good

Metal organics -OH Excellent

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