074 - Engineering not magic, intumescent coatings with Andrea Lucherini

Intumescent coatings are not magic. They are a product of amazing engineering, a theatre of thermophysical properties that create an insulative layer that sometimes is the only thing holding fire from destroying a structure. A chemical masterpiece in which the onset of swelling is chosen so that the paint layer is soft just when the chemical compound used to foam starts releasing gasses. Sharing many features with natural carbon-made materials, they char and oxidize. And once you start modell...