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Moving Beyond the 25-Year Coating

Moving Beyond the 25-Year Coating
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Over the past 40 years, three-coat systems consisting of zinc-rich primer, epoxy intermediate and polyurethane topcoat (ZEU) have been the preferred coating system for steel bridge structures in highly corrosive environments due to their proven performance and cost effectiveness.1-6 Each layer serves a different function: galvanic protection is supplied by the zinc-rich primer, while the epoxy intermediate coat provides barrier to water and salts, and the polyurethane topcoat resists against ultraviolet degradation, abrasion, and chemicals.

Product Number: 51218-138-SG
Author: Hank Bernacki, Zhenwen Fu, Bingquan Li, Denise Lindenmuth & Leo Procopio
Publication Date: 2018
Industry: Coatings
$0.00
$20.00
$20.00

Over the past 40 years, three-coat systems consisting of zinc-rich primer, epoxy intermediate and polyurethane topcoat (ZEU) have been the preferred coating system for steel bridge structures in highly corrosive environments due to their proven performance and cost effectiveness.1-6 Each layer serves a different function: galvanic protection is supplied by the zinc-rich primer, while the epoxy intermediate coat provides barrier to water and salts, and the polyurethane topcoat resists against ultraviolet degradation, abrasion, and chemicals.

Over the past 40 years, three-coat systems consisting of zinc-rich primer, epoxy intermediate and polyurethane topcoat (ZEU) have been the preferred coating system for steel bridge structures in highly corrosive environments due to their proven performance and cost effectiveness.1-6 Each layer serves a different function: galvanic protection is supplied by the zinc-rich primer, while the epoxy intermediate coat provides barrier to water and salts, and the polyurethane topcoat resists against ultraviolet degradation, abrasion, and chemicals.

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Dry Film Thickness: is More Coating Always Better?
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Dry Film Thickness: is More Coating Always Better?

Product Number: 51219-188-SG
Author: Saiada FuadiFancy & Kingsley Lau
Publication Date: 2019
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Coating thickness is one of the most important parameters influencing durability of a protective coating system. As a general rule-of-thumb, the thicker the coating, the greater the protection. But is there any upper limit to this general rule? This paper looks at durability figures of common protective coating systems for atmospheric and immersion exposure as a function of dry film thickness. 
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51318-11068-What is the Optimum Protective Coating System for Cyclic-Temperature Service?

Product Number: 51318-11068-SG
Author: Naoki Tanuma
Publication Date: 2018
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In Oil and Gas plant facilities, protective coating system selection is important. Thermal Sprayed Aluminum and Inorganic Zinc Primer with Inert Multi-Polymeric Matrix are optimum protective coating system in severe conditions.
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(Coating Formulation) Efficacy of Zinc Content in Sacrificial Protection of Coatings

Product Number: 44-COAT_DEC21
Author: Nicole Rakers / Mary Lyn Lim / Michael McCarthy / James Begley
Publication Date: 2021
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Zinc rich coatings have long been used in the protective coatings industry as one of the primary means of steel substrate protection against corrosion. The primary protection mechanism has historically been galvanic sacrificial loss of zinc metal and the simultaneous formation of protective zinc oxides and salts. Various standards and customer specifications exist to ensure that the coating will provide the necessary corrosion protection for the life of the asset.
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