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Epoxy coatings are also widely used as primers to improve the adhesion of automotive and marine paints especially on metal surfaces where corrosion (rusting) resistance is important. Metal cans and containers are often coated with epoxy to prevent rusting, especially for foods like tomatoes that are acidic .
The base coat is applied after the primer coat. This coat contains the visual properties of color and effects, and is usually the one referred to as the paint. Base coat used in automotive applications is commonly divided into three categories: solid, metallic, and pearlescent pigments. Solid paints have no sparkle effects except the color ...
Primer reduces the number of paint coats needed for good coverage and even color. A thin layer of paint may still be permeable to water. Water can permeate into the wood and cause warping, mildew, or dry rot. Primer improves the waterproofing of the finish. [4] Primers are not used as part of a wood stain treatment because they obscure the wood ...
These include primers, basecoats, and clearcoats, primarily applied with spray guns and electrostatically. [15] The body and underbody of automobiles receive some form of underbody coating . [ 16 ] Such anticorrosion coatings may use graphene in combination with water-based epoxies .
Termed e-coat, "electrocoat automotive primers are applied by totally submerging the assembled car body in a large tank that contains the waterborne e-coat, and the coating is applied through cathodic electrodeposition. This assures nearly 100% coverage of all metal surfaces by the primer.
Automotive anti-scratch coatings are becoming stronger (from 10 newtons to 15 newtons of protection) to counter scratch resistance lost due to the industry shift from steel to lightweight, but low-scratch resistant plastics and aluminium. Currently, scratch-formation is decreased with a primer and clear coat.
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