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发明公开
CN105074065A 碳纤维的制造方法 有权

碳纤维的制造方法
摘要：
提供一种碳纤维的制造方法，其能够获得高品质的碳纤维。是满足以下的(1)～(3)的碳纤维的制造方法。(1)包括下述工序：将片状展开的碳纤维前体纤维束导入预氧化炉，在200℃～300℃的温度范围内对导入上述预氧化炉的碳纤维前体纤维束进行预氧化处理，将由上述预氧化处理获得的预氧化纤维束导入碳化炉，在300℃～2500℃的温度范围内对导入上述碳化炉的预氧化纤维束进行碳化处理。(2)上述预氧化炉具有热处理室和与之邻接的密封室，从上述密封室向上述预氧化炉外进行排气。(3)从上述热处理室向上述密封室吹出的热风的空间速度SV(1/h)满足关系：80≤SV≤400。
摘要（英）：

Provided is a carbon fiber manufacturing method with which high quality carbon fibers can be obtained. The carbon fiber manufacturing method satisfies all of (1)-(3) below. (1) The method comprises processes for introducing carbon fiber precursor fiber bundles that have been spread in sheet form into a flameproofing furnace, flameproofing the carbon fiber precursor fiber bundles introduced in the flameproofing furnace in a temperature range of 200 DEG C-300 DEG C, introducing the flameproofed fiber bundles obtained from the flameproofing process into a carbonization furnace, and carbonizing the flameproofed fiber bundles introduced into the carbonization furnace in a temperature range of 300 DEG C-2500 DEG C. (2) The flameproofing furnace has a heat-treatment chamber and a sealing chamber adjacent thereto and exhausts from the sealing chamber to the outside of the flameproofing furnace. (3) The space velocity (SV) (1/h) of the hot blast blown from the heat-treatment chamber into the sealing chamber satisfies the following relationship. 80<=(SV)<=400

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