Carbon fiber sheet and method for manufacturing carbon fiber sheet

The present invention addresses the problem of providing a carbon fiber sheet which is more easily manufactured than conventional carbon fiber sheets and a method for manufacturing the same. Providedis a method for manufacturing a carbon fiber sheet, the method including a carbon fiber forming step of heating a resin sheet to a carbonization temperature at a heating rate of 15000 degrees centigrade/sec or higher, thereby forming a carbon fiber from the resin sheet. In the carbon fiber forming step, the resin sheet is preferably irradiated with an energy ray having an output density of 130 W/mm2 or higher and an amount of irradiation energy of 0.05 J/mm2 or more. 本发明提供种比以往更容易制造的碳纤维片及其制造方法。种碳纤维片的制造方法，其包括：将树脂制片以升温速度15000℃/sec以上加热至碳化温度，由此使所述树脂制片进行碳纤维化的碳纤维化工序。在碳纤维化工序中，优选对树脂制片照射功率密度为130W/mm以上且照射能量的量为0.05J/mm以上的能量射线。