Rennlist - Porsche Discussion Forums - What are we protecting our auto paint surface from?

Environmental Damage - http://togwt1980.blogspot.co.uk/2016...al-damage.html

Environmental damage to paint comes in a varied range of threats; acid rain, industrial fallout, brake and rail dust, road salt, tree sap, hydrazine an extremely active acid that is found in jet fuel, ultra violet (UV) and heat radiation, and other airborne contaminants are very detrimental to a vehicles paint film surface.

The clear coat provides protection to the paint matrix, this has a half-life (t 1/2) of five year and is defined in terms of probability [: the time required for exactly half of the entities to decay on average]

They are all forms of environmental contamination and given the right catalyst; reactivity (heat) plus moisture, they will become acidic. During this process the metal absorbs oxygen from the water and forms iron oxide (rust). Given the porosity of paint they permeate the paint matrix down to body metal.

https://cimg8.ibsrv.net/gimg/rennlis...60050aa31b.jpg