Traditional rust preventive formulations utilize waxes and oils to leave a thin, temporary barrier film on a metal surface. The delicate and tacky nature of these chemistries may not be fit for every application and end users often seek alternatives that are more durable. Acrylic polymer films have been sought as a suitable replacement, providing a dry-to-touch alternative that offers ease of handling with acceptable corrosion protection. These types of coatings are already used in direct-to-metal protection applications and in many cases provide semi-permanent corrosion protection. This study will evaluate acrylic polymer formulations that are commercially available as one-coat rust preventives, instead of the multi-coat systems typically employed by end users. Coated samples will be subjected to various standardized exposure tests to allow for comparison to one another. In addition, film properties of the dry films will also be investigated, and various tests will be run on the liquid samples to better understand how they are formulated.

Subject
Films, Humidity, Test methods, Water, Coatings, Material properties, Substrates, Polymers, Salt spray corrosion testing, Dry film thickness, Corrosion protection, Acrylics, Samples
Keywords:
Waterborne, Acrylic, Rust Preventive, Direct-to-metal, DTM
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2014
Association for Materials Protection and Performance (AMPP)
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