Among them, 250 ℃ is close to the softening temperature of PAN fibers, 350 ℃ is close to the decomposition temperature of PAN fibers, and 1000 ℃ is higher than the softening and decomposition temperature of PAN fibers,<br>On this basis, in order to fully degrade and gasify PAN fibers, technicians in this field can easily think of setting the temperature of each pyrolysis step to be equal to or close to the melting temperature of the polymer phase, equal to or close to the gasification temperature of the polymer phase, and higher than the melting temperature and gasification temperature of the polymer phase to fully degrade and gasify the polymer.
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