Apparatus and method for manufacturing high-density in-line carbon nanotube thin film

A method for forming an aligned carbon nanotube film, comprising:

• adding a carbon nanotube solution into a container main body, wherein:
• the container main body comprises a buffer partition plate that divides the container main body into an upper portion and a lower portion, wherein:
• peripheral edges of the buffer partition plate are connected with an inner wall of the container main body;
• and
• the buffer partition plate comprises a protruding strip-shaped fixing member and a plurality of through holes;
• placing a substrate into the upper portion of the container main body vertically;
• adding a sealing liquid that is immiscible with the carbon nanotube solution along the substrate or the side wall of the container main body to form two-liquid layers in the upper portion of the container main body;
• ensuring, by using the buffer partition plate, the carbon nanotube solution passing through smoothly and uniformly from the upper portion of container main body to the lower portion of container main body;
• leading a solvent out through a solvent lead-out part so that a liquid level of the carbon nanotube solution gradually drops to form the aligned carbon nanotube film on the substrate, wherein:
• the solvent lead-out part communicates with an interior of the lower portion of the container main body through a through hole in a side wall of the container main body and extends to an outside of the container main body;
• the solvent lead-out part comprises a pipeline having a semi-permeable effect;
• and
• a dropping speed of the liquid level of the carbon nanotube solution is controlled by adjusting a length of the solvent lead-out part;
• and
• cleaning the carbon nanotube film formed on the substrate.