In contrast, other polymeric coating
systems have oxygen, nitrogen or sulfur atom links in their backbone structures, and may require crosslinking to achieve the desired properties.
The rheological characteristics of a coating
are best measured with a viscosity test using one of the two viscosity test methods:
Audio Guard is a PPG-developed spray-on acoustic coating
designed to be applied by robots during the assembly process, and currently used on some Jeep models.
Replacement of a single coating
layer with multiple layers of coating
can improve light scattering and gloss.
Session 4 on smart coatings
and materials will include the following presentations: "Smart coatings
for multifunctional usage," Mark D.
The Baume scale of numbers relates to the specific gravity and body of a coating
According to Richard Zahren, vice president, Automotive Coatings
, "If you look at the vehicles on the road today that have a clear coat, they look great for a while, but scratches in the surface cause white marks to appear, and dents smudge the finish, reducing the clarity of the top coat.
Since late 1997, two sheet lines using American Roller's thicker, dent-resistant ceramic coatings
have been running at Trio Products, a unit of Ivex Packaging Corp.
Weller notes that these coatings
showed contamination with an ultrathin (20- to 100-angstrom) layer of hydrocarbons, a phenomenon that dramatically alters the interaction between radiation and the magnesium fluoride surface, he says.
Peeyush Tripathi of Western Michigan University reported that the maximum bubble pressure method does not seem to correlate with the curtain coating