Temperature — Time dependence of the strength of polymers exposed to UV radiation

Experiments on several polymers have shown that the dependence of the radiation lifetime under load on the intensity of the ultraviolet radiation and test temperature is governed by general empirical laws. An analysis of the results yields important information on the photodegradation of stressed polymers.Ioffe Physico-Technical Institute, Academy of Sciences of the USSR. Leningrad. Translated from Mekhanika Polimerov, No. 3, pp. 442–448, May–June, 1969.