To improve the heat exchange between the rim and tire on the rim is used a kind of liquid glass with black opacifying pigment that is used to improve the thermal conductivity. The only world producer of this innovative product is the Nanoprom is the product is called Polysil. It is a based on atomic silicon coating with revolutionary features that allows the protection of reconditioning the substrate surface structure. With a layer of a few microns high surface hardness (9H) ,the surfaces also have a high resistance to abrasion. This “liquid glass” weighs 95% of a normal painting and has a resistance to temperatures of 1100 ° C. Currently the color coatings of a wheel of Formula 1 weigh from 65 to 85 grams. Thanks to this product the coating weighs only 5 grams and in addition to improving thermal conductivity gave an improvement of 3 points to the CFD as are generated less turbulence In races in which the track was not very hot to increase the heat exchange between the rim and the tire was coated with the Polysil also the inner part of the circle. This new treatment is aimed at increasing the temperature in the inner face of the rim. through an increase in the gloss, increases heat refraction, decreasing the dissipation of the same, but it does not prevent the heat resulted from braking distance inside. This product, this season has been used by Mercedes, Red Bull, Ferrari and McLaren but certainly in the next season also it will be used by many other teams.
[Source: http://www.f1analisitecnica.com/2013/12/modifiche-tecniche-top-e-flop-della.html?spref=tw&m=1]
