New resistant organic coatings in different aggressive environments

The experimental results enabled the usefulness of some new rubbers and ebo nites coatings to be defined in terms of corrosion media, temperature range and efficiency time. The performances of these new coatings were estimated after comparative studies under laboratory (acid and alkaline solutions of various concentrations, sea water, all at high temperatures, salty fog and tests at low temperatures) and industrial turban environment, marine envir onment, industrial atmosphere, (acid and alkaline tanks, cisterns, various reaction and filtration vessels) conditions. The ebonites have higher perfo rmances than rubbers with the same composition both in dilute and concentra ted acid and alkaline solutions. It was observed that the temperature affec ts more the rubbers than the ebonites in agreement with the fact that the t emperature produces the deterioration of elastomers by the scissions of the catenaries which take place more easily for rubbers (which have unsaturate d double bonds) than for ebonites (which have not unsaturated double bonds) . A clear dependence between the protective properties and the composition of the studied materials and the concentration of the corrosive media was c oncluded.