我用静电纺丝制备的聚丙烯腈膜炭化制备碳纤维膜，实验条件为：
(1) the PAN nanofiber was stabilized under air atmosphere from room temperature to 270 oC at a heating rate of 0.5 oC/min (no holding period).
(2) The stabilized PAN nanofiber was then carbonized at 1025 oC (from 270 to 1025 oC at a heating rate of 2 oC/min in in nitrogen gas flow) for 0.5 h in nitrogen gas flow.
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