COAT NOTES

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Can Self-Healing Coatings Ever Become a Reality?

Dry field and small green plantIt seems so simple: We cut a finger or bruise a knee, and a week or so later we’re all better. You snip a small branch of basil leaves to make pesto, and before you know it there is another branch of basil leaves sprouting from the cut. If plants and animals can heal and thrive, why not other organic material, like polymers used to make coatings?

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Whatever Happened to … UV-EB Cured Coatings for the Coil Coating Industry?

photo3Whatever happened to UV-EB (ultraviolet-electron beam) cured coatings technology? The simple answer is, “Still there. Doing just fine.” For the coil coating industry, the answer is even simpler: Never left the starting block, even though a great deal of effort went into the development of UV-EB coating technology suitable for the coil-coated building products industry. I’ll get to those developments in a bit, but first, a little history.

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NCCA Color Experiment at NCCA’s Fall Meeting and METALCON 2017

NCCA has been investigating an alternative method for color measurement for the coil coating industry. As part of this investigation, NCCA is coordinating a visual assessment experiment. In a nutshell, we are attempting to assess the human response to slight color differences between pairs of panels and to correlate that response to a color instrument’s reading. Of course, people see color and color differences differently, and color instruments have a host of setup options from which to choose, so this is hardly a straightforward experiment. But if it were simple, it would have been done decades ago. Continue reading


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NCCA to Present at the22nd Galvanizing and Coil Coating Conference, September 12-13, 2017


NCCA Technical Director David Cocuzzi is scheduled to present a paper and conduct a 1.5-hour seminar on prepainted metal at the Galvanizing and Coil Coating Conference to be held September 12-13, 2017, in Abu Dhabi.

This area of the Middle East (Saudi Arabia, UAE, etc.) has experienced a surge in development over the last few decades. It’s easy to assume that oil revenue explains it all, and we know that a lot of money is being spent to build towers and islands, so why bother talking about coil coating? As these economies develop, each country has to grapple with their own unique set of conditions, not the least of which is that they cannot depend on an endless supply of oil. Each country must look to branch out into other areas of business that make the most sense for their economy while also studying what other global economies are doing. Continue reading


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Tips for Prepainted Metal Maintenance

For most buildings, the exterior is designed to be its most important eye-catching feature. While we’re wired to be extra mindful of the cleanliness and maintenance of the interior of our homes and offices, we sometimes neglect to remember to give the outside of our buildings the proper care. One of the biggest advantages of prepainted metal is its easy maintenance, but there are a few easy steps to make your metal panels shine bright.

Rinse the surface with water.

This sounds like a no-brainer, but this is one of the easiest ways to clean coated metal panels. Dirt and debris built up over time can affect the quality of the panel’s appearance and potentially reduce the lifetime of the coating. Simply rinsing the surface with a garden hose or pressure spray system will clean most buildups on a coating surface, allowing the panels to look brand new.

Clean with soap or water for difficult areas.

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Whatever Happened to … Acid Rain?

Air emissions and global warmingThis is the first in a series of posts under the general heading, “Whatever Happened to … ?” The idea is to revisit issues and opportunities of the past and help bring you up to date on what has been accomplished and what is still yet to be done. So … whatever happened to acid rain?

As it pertains to the prepainted metal market, and especially to metal roofing, acid rain became an accepted and understood phenomenon in the late 1970s and early 1980s. Badly corroded roofs were becoming more prevalent, but—like any new problem—it took some time to identify the root cause and to learn how to overcome the issue of red rusting on roofs. And, as with any root cause analysis, an early root cause declaration is usually challenged. Then more research is done, more challenges are raised, and, eventually, consensus is reached. Continue reading


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When “Just Right” Means “Uh-Oh”

nccaA while back, I wrote about the “just right” conditions necessary for the formation of fog. That particular post discussed the scattering of light, which is done by materials such as titanium dioxide (the principal pigment in white paint) and clouds (where water droplets do the scattering). The birds are chirping at sunrise and the vernal equinox has already passed, which means the sun is finally in the Northern Hemisphere and the days are getting longer and warmer—and all of this points to the beginning of another building season. That got me to thinking about a few other “just right” conditions that seem pertinent for this time of year. And, once again, water comes into play. Continue reading