Sisteme de stabilizare UV pentru stratul de suprafată (gel coat) din poliesteri nesaturati

There were investigated the performances of some UV stabilizers systems in the surface layer (gel coat) of unsaturated polyesthers. The changes in colour and in gloss were determined using accelerated degradation methods as well as natural ageing. The correlation of results allowed the proposal of a degradation model of the polyestheric surface layer under UV radiations action.