Abstract
Results of experimental studies of heat release during heating of polyacrylonitrile (PAN) rope are presented. The heating conditions for PAN rope samples of elemental fiber linear density 0.08, 0.10, and 0.12 tex to 330°C at rates 2, 3.5, and 5 K/min were selected to model thermal stabilization processes in an oxidation furnace. These data were used to determine the kinetic constants in the Arrhenius equation using the method proposed by L. I. Volkova. Experimental heat release in rope as a function of time at various heating rates was used to determine the kinetic reaction constants. Kinetic constants of the generalized reaction were determined for all tested ropes and conditions. A heat-release equation was formulated based on the kinetic constants for each PAN rope sample. The rope mass change as a function of time M(t) expressed in fractions and represented as a second-order polynomial was determined from the rope mass loss at heating rate 3.5 K/min.
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