OK, perplexed to say the least. I did a traditional two bucket and hose wash. As I started spraying down the car, I couldn't help but notice the areas that had been WW with D115 were beading and sheeting water like a fresh wax job. The hood and the trunk with Collinite 520 on (which had been treated with D115 the same time the rest of the car had been about 48 hours before the Collinite 520 was used) was far worse with water behavior. The trunk lid especially was not beading at all, nor was it moving water. The hood was a little better with water sheeting, but limited beading. I proceeded to wash the car with Duragloss car wash. This had no effect on the rest of the car/D115 as nothing diminished. It did bring back the Collinite 520 hood a little, beading returned, but was not small spherical type of droplets like we have all come to know with Collinite. The beads were oblong, reminded me of the look when your wax/sealant is full of contaminants. Water sheeting was present, but very, very slow.
Now keep in mind, the car needs clayed, the paint cleaned and a fresh coat of wax/sealant. With that said, it didn't seem to effect the D115 at all. Maybe the D115 interfered with the Collinite 520 adhering. Who knows. I'll try it again after my next full detail (decon, paint cleaned, fresh wax/sealant), hope to get to it in early June.
I’ll call it:
”Easy come; easy goes”.
Keep in mind that there is relationship that exists
between water-beading and surface energies.
In this case:
1.) the surface energy of the paint; and
2.) the surface energy of water.
TO WIT:
In order for water to bead (exhibit hydrophobicity),
the surface energy of the paint needs to be lower
than the surface energy of water.
*****************************************
-Just as there are many car-care products
(such as LSPs) that will produce the surface
energies needed to cause hydrophobic effects:
the
”Easy come”...
-Conversely, there are many car-care products
that can change these energy levels to the point
where hydrophobic properties can be negatively
affected—water beading lessens; becomes irregu-
larly shaped; even stops (becomes “hydrophilic”):
the
”Easy goes”.
•Believe it or not:
QDs are one such type of car-care product that
can change those surface energies. (And don’t
forget the adverse affect that atmospheric and
environmental contaminates can have on the
“symbiotic” relationship between auto paint and
water beads/beading.)
*************************************
Bottom line?
•IMO:
-QDs are formulated to give the
”Just Detailed” look;
-not particularly, or necessarily, for creating
surface energies that are conducive for water
to bead upon paint.
Bob