According to the product tech sheet this coating is really design for protecting high temperature surfaces such as exhaust pipes. It doesn’t say anything about improving heat transfer. Just protects the hot surfaces from discoloring.
This kind of makes sense. I went to the Materials Safety Data Sheets where it provides general composition information. It looks like the coatings are a mixture of some pretty nasty solvents, high temp polymer binders, and ceramic and metallic particles. I’ve been working with these kind of materials for >25 years and the coating will certainly dissipate heat, and the coating surface roughness may help a little in that regard, possibly better for radiative modes of heat transfer. Not sure whether it improves convective heat dissipation of 80F air flowing over a 220F aluminum radiator, however. I’d like to see the test results to be sure.
COMPOSITION/INFORMATION OF INGREDIENTS
0-10% Titanium dioxide
0-2% Carbon black
20-50% Ambient Temperature-curable refractory resin(s)
15-30% Ceramic and/or metallic pigments and colorants
0-1% Silicone-based rheology modifiers
20-65% p-chlorobenzotrifluoride