Effect of aggressive media on the fatigue life of plastics

The dependence of fatigue life on concentration has been obtained for PVC and polystyrene exposed to the action of acetone solutions. As the mechanical stress increases, the role of the aggressivity of the medium diminishes, and its corrosion activitya tends to a minimum (a=1). When a polymer is exposed to the action of a binary liquid, both of whose components are aggressive, a transition region is observed on the log 1/-log C curve. In this region the fracture rate increases sharply.Mekhanika Polimerov, Vol. 4, No. 3, pp. 489–493, 1968