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Single-Component Polysiloxane: An Advanced Coating for Navy and Surface Topsides

Single-Component Polysiloxane: An Advanced Coating for Navy and Surface Topsides
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 Silicone alkyds are single-component (1K) systems and do not require the mixing of components before application. These systems are easy for sailors to apply (via brush or roll), have an indefinite pot-life in a closed can, and will cure under harsh marine conditions, which are why these coatings have been utilized on the exterior topsides of Navy surface ships since the early 1960s. However, these “user friendly” coatings provide limited color and gloss retention, limited resistance to shipboard hydrocarbons, and limited resistance to staining from running rust and soot. 

Product Number: 41215-903-SG
Author: Erick Iezzi
Publication Date: 2015
Industries: Military , Coatings , Coatings and Linings
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$20.00
$20.00

 Silicone alkyds are single-component (1K) systems and do not require the mixing of components before application. These systems are easy for sailors to apply (via brush or roll), have an indefinite pot-life in a closed can, and will cure under harsh marine conditions, which are why these coatings have been utilized on the exterior topsides of Navy surface ships since the early 1960s. However, these “user friendly” coatings provide limited color and gloss retention, limited resistance to shipboard hydrocarbons, and limited resistance to staining from running rust and soot. Recently, qualified two-component (2K) polysiloxanes has shown to provide improved performance versus silicone alkyds, but they require the mixing of components before application and generate waste from unused mixed materials. Improper mixing of these two component systems can result in inadequate performance, an unsightly appearance, and finishes with reduced levels of gloss. In 2010, the Naval Research Laboratory (NRL) developed and tested a novel isocyanate-free and low VOC single-component (1K) polysiloxane coating for Navy surface ship topsides. The coating demonstrated excellent color retention on surface ships versus silicone alkyds and two component polysiloxanes, but did not possess optimal dry times or adhesion over the high-solids anti-corrosive epoxy primers that are often used by sailors for touch-up and repair of topsides. The polymer in the single-component topcoat has since been modified to address these issues, and the revised formulation is currently undergoing testing to MIL-PRF-24635, Type V requirements, which includes demonstrations on Navy surface ships. This paper will discuss the laboratory qualification testing of the revised topcoat, in addition to demonstrations on Navy surface ship topsides

 Silicone alkyds are single-component (1K) systems and do not require the mixing of components before application. These systems are easy for sailors to apply (via brush or roll), have an indefinite pot-life in a closed can, and will cure under harsh marine conditions, which are why these coatings have been utilized on the exterior topsides of Navy surface ships since the early 1960s. However, these “user friendly” coatings provide limited color and gloss retention, limited resistance to shipboard hydrocarbons, and limited resistance to staining from running rust and soot. Recently, qualified two-component (2K) polysiloxanes has shown to provide improved performance versus silicone alkyds, but they require the mixing of components before application and generate waste from unused mixed materials. Improper mixing of these two component systems can result in inadequate performance, an unsightly appearance, and finishes with reduced levels of gloss. In 2010, the Naval Research Laboratory (NRL) developed and tested a novel isocyanate-free and low VOC single-component (1K) polysiloxane coating for Navy surface ship topsides. The coating demonstrated excellent color retention on surface ships versus silicone alkyds and two component polysiloxanes, but did not possess optimal dry times or adhesion over the high-solids anti-corrosive epoxy primers that are often used by sailors for touch-up and repair of topsides. The polymer in the single-component topcoat has since been modified to address these issues, and the revised formulation is currently undergoing testing to MIL-PRF-24635, Type V requirements, which includes demonstrations on Navy surface ships. This paper will discuss the laboratory qualification testing of the revised topcoat, in addition to demonstrations on Navy surface ship topsides

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Product Number: 18-COAT_DEC21
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Third Generation Polysiloxane (TGPS) ambient curing CUI mitigation coatings have been used in the petrochemical industry for over five years since the “third generation” concept was introduced at NACE Corrosion 2017. These coating technologies have demonstrated positive results in both shop and field application for asset management in elevated temperature, cryogenic and cyclic applications across -196 to 650o C/ -321 to 1200o F operational temperatures. TGPS coatings have also demonstrated effective use of a two-step (primer-insulation) CUI mitigation coating approach operating up to 400o C/750o F, when compared to the traditional (CUI coating-fibrous insulation-cladding) systems.
Improving the Performance of Epoxy-Polysiloxane Coatings
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Improving the Performance of Epoxy-Polysiloxane Coatings

Product Number: 41215-907-SG
Author: Dean Kondos, Vikram Kumar, Kujtim Bizati, Christian Geismann, Martin Wusik
Publication Date: 2015
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A new patent-pending resin technology incorporated into the epoxy/polysiloxane part A portion of a two-component coating system, using an amino-silane curing agent, has shown significant improvements in flexibility, gloss and color retention. Corrosion resistance and adhesion to non-sandblasted metal substrates have also shown improvements. The new resin technology may be considered for low-VOC and HAPs coating systems. 
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07008 Comparison between epoxy polysiloxane and acrylic polysiloxane finishes

Product Number: 51300-07008-SG
ISBN: 07008 2007 CP
Author: Erik Graversen
Publication Date: 2007
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