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The Importance Of Surface Preparation Method On The Corrosion Resistance And Mechanical Properties Of Zinc Rich Primers

Picture for The Importance Of Surface Preparation Method On The Corrosion Resistance And Mechanical Properties Of Zinc Rich Primers
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Product Number: 51321-16642-SG
Author: Dr David Morton/ Antoni Prieto/ Tomas Alhambra/ Raquel Morales/ Cristina Juni
Publication Date: 2021
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Surface preparation is a crucial factor to ensure good performance of coating system in an offshore environment. Both substrate cleanliness and surface profile (influence by the shape of abrasive) will improve the adhesion of the primer which has a direct influence on the performance of the coating system. For a highly corrosive offshore environments the industry is specifying zinc rich primers for long service life. This paper will examine the performance of new, activated zinc rich epoxy primers compared to conventional zinc rich epoxy primers on steel prepared to different surface profiles using standard techniques used today. Testing done has been the cyclic ageing according to ISO12944-9 (2018), blister box test according to ISO 6270-1 and the impact test according to ISO6272-1. This testing will show the importance of surface preparation on the ability of the coating system to provide long term corrosion resistance in an offshore environment and on how the choice of zinc rich primer can improve tolerance to poor surface preparation and thus enhance the lifetime of the coating system.

Key words: Surface Preparation, Zinc Rich Primers, Maintenance

Surface preparation is a crucial factor to ensure good performance of coating system in an offshore environment. Both substrate cleanliness and surface profile (influence by the shape of abrasive) will improve the adhesion of the primer which has a direct influence on the performance of the coating system. For a highly corrosive offshore environments the industry is specifying zinc rich primers for long service life. This paper will examine the performance of new, activated zinc rich epoxy primers compared to conventional zinc rich epoxy primers on steel prepared to different surface profiles using standard techniques used today. Testing done has been the cyclic ageing according to ISO12944-9 (2018), blister box test according to ISO 6270-1 and the impact test according to ISO6272-1. This testing will show the importance of surface preparation on the ability of the coating system to provide long term corrosion resistance in an offshore environment and on how the choice of zinc rich primer can improve tolerance to poor surface preparation and thus enhance the lifetime of the coating system.

Key words: Surface Preparation, Zinc Rich Primers, Maintenance

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Picture for 07006 INORGANIC ZINC PRIMER VS ORGANIC ZINC PRIMER: (an end-user point of view ).
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