| Abstract: | Conclusions 1. The thermal oxidative degradation of PAN fibres having an IA content from 1.2 to 6.4% in the copolymer has been studied by the DTA method.2. Increasing the IA content of the copolymer leads to a shift of the exothermic effects of the cyclization reaction into the lower temperature region, and also to a decrease in the thermally effect from thermal oxidation, which affords a possibility of increasing the efficiency of processes of heat treatment of PAN in the preparation of carbon fibres and of reducing heat expenditures.NITs Uglekhimvolokno (Mytishchi). Translated from Khimicheskie Volokna, No. 5, pp. 25–27, September–October, 1993. |
