Universal Primer and Surface Preparation Process (2015-422)
- Ingalls Shipbuilding
- Elzly Technology Corporation
NSRP ASE Investment: $150K
The overall goal of this project was to evaluate alternate primers with extended overcoat windows and develop the technical and business case for their use in ship construction. Specific goals were to identify zinc free primers for general marine use with extended overcoat windows, conduct tests to compare the process and performance to existing products, and develop a technical paint strategy and business case to support industry adoption. The project has demonstrated the following:
- Topcoat adhesion on primers with long overcoat windows is comparable to topcoat adhesion on legacy epoxy coatings.
- For the test surfaces used, abrading the primer surface did not provide a statistically significant benefit to MIL-DTL-24607 topcoat adhesion compared to cleaning methods which do not abrade the surface, however there was some indication that risk is reduced as there were low adhesion observations with the non-abrasive preparation of epoxy primers.
- For the test surfaces used, there is some evidence that abrading the primer surface provided some benefit to MIL-PRF-24596 topcoat adhesion compared to cleaning methods which do not abrade the surface.
Request Final Report from NSRP – Limited Distribution Authorized to U.S. shipyards and NSRP ASE Program Representatives