The present work specialized in the purification and opening of the Multi-walled carbon nanotubes (MWNTs) refluxed in concentrated nitric acid or air oxidation method respectively.

• 通过对开口时经纱变形伸长特性和开口形式的分析,指出了多臂机不能充分发挥效能的问题所在,并给出了解决办法。