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National Shipbuilding Research Program (NSRP) Surface Preparation and Coatings (SP&C) Panel 2017 Update

National Shipbuilding Research Program (NSRP) Surface Preparation and Coatings (SP&C) Panel 2017 Update
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Zinc rich primer coatings, both organic and inorganic, are extensively used in highly corrosive environments and they are part of a high performance coating system in the Protective Coatings Industry. During the 60’s and the 70’s, zinc rich epoxy primers dominated the market. Later, zinc ethyl silicate primers took over mainly due to their higher potential to corrosion protection. Nowadays however, new developments in zinc epoxy primers are setting the two categories of Zinc rich primers on the same level in terms of anticorrosion performance while adding the advantages of Epoxy based primers. 

Product Number: 51217-066-SG
Author: Raquel Morales, Antoni Prieto, Pinturas Hempel, Jose Luna
Publication Date: 2017
Industries: Corrosion Monitoring and Control , Coatings
$0.00
$20.00
$20.00

Zinc rich primer coatings, both organic and inorganic, are extensively used in highly corrosive environments and they are part of a high performance coating system in the Protective Coatings Industry. During the 60’s and the 70’s, zinc rich epoxy primers dominated the market. Later, zinc ethyl silicate primers took over mainly due to their higher potential to corrosion protection. Nowadays however, new developments in zinc epoxy primers are setting the two categories of Zinc rich primers on the same level in terms of anticorrosion performance while adding the advantages of Epoxy based primers. Some of these advantages of zinc epoxies over to zinc silicates are the less demanding curing conditions (epoxies will cure at low humidity), the easier overcoating and the less demanding preparation of the substrate prior to application. In addition, Zinc epoxies are typically formulated with high loads of zinc dust, and show better mechanic behaviour, meaning that over thickness is less problematic during application, avoiding the common failure by mud cracking of zinc silicates that can fail by mud cracking. 

Zinc rich primer coatings, both organic and inorganic, are extensively used in highly corrosive environments and they are part of a high performance coating system in the Protective Coatings Industry. During the 60’s and the 70’s, zinc rich epoxy primers dominated the market. Later, zinc ethyl silicate primers took over mainly due to their higher potential to corrosion protection. Nowadays however, new developments in zinc epoxy primers are setting the two categories of Zinc rich primers on the same level in terms of anticorrosion performance while adding the advantages of Epoxy based primers. Some of these advantages of zinc epoxies over to zinc silicates are the less demanding curing conditions (epoxies will cure at low humidity), the easier overcoating and the less demanding preparation of the substrate prior to application. In addition, Zinc epoxies are typically formulated with high loads of zinc dust, and show better mechanic behaviour, meaning that over thickness is less problematic during application, avoiding the common failure by mud cracking of zinc silicates that can fail by mud cracking. 

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