Quote:
Originally Posted by serialk11r
AFAIK barium sulfate is the best white pigment for "cooling", but it's harder to get. Really though I think you just need a white vinyl wrap if you don't already have a white car. The clear coat is only a few dozen microns but preventing sunlight from heating the base coat has to help a little.
A few months ago I rented a white car at the airport on a very sunny day, and I was very surprised that the paint was nearly cool to the touch. Any white paint or wrap is going to be far better than any other color.
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Yes, according to my reading and IIRC:
Any white paint is better than any other colour from my reading.
Even silver!
If the pigment is super white and great at reflecting IR; it's better, but not dramatically so vs a white paint of any sort.
Wish I could find the study again.
Ah!
NB Delta T2: The difference of temperature behind the panels coated with cool and standard paints.
Calcium Carbonate: 95.5% reflective:
https://phys.org/news/2020-10-white-...-sunlight.html
Barium Sulphate: 98.1% reflective:
https://cosmosmagazine.com/science/w...int-ever-made/
An undercoat for any colour:
https://www.newscientist.com/article...n-it-is-black/
Vantablack: the opposite and freaky to look at:
https://cosmosmagazine.com/technolog...ial-ever-made/
This should work well in cold areas, but will drastically decrease your chances of being seen! Dangerous.
https://youtu.be/DOSWHyCVX-o
Vantablack sprayable: DBX2 (99%) BMW: