| Abstract: | Conclusions With respect to a number of characteristics, pilot plant lots of polypropylene and fibrous materials based on it which have been stabilized, with compounds from the SHA class displaying the greatest atmosphere resistance and light resistance.A good correlation is observed between data obtained on exposure of fibrous materials under laboratory conditions ( Xenotest 1200 ) and under natural climatic conditions of the middle and southern zones of this country.The buildup of carbonyl groups in light- and oxidative-degradation of polypropylene films in the Xenotest 1200 correlates well with the decrease in strength of industrial lots of fibrillated yarns and with the rise in melt yield point of experimental lots of polymer in atmospheric aging.Translated from Khimicheskie Volokna, No. 5, pp. 28–30, September–October, 1984. |
