Method for 3d printing of carbon nanotube microstructure having high conductivity, and ink used therein

Abstract

Carbon nanotube (CNT) ink includes a CNT, a rheological modifier for controlling a flow of the CNT, and a solvent. The CNT ink exhibits a liquid-like behavior under shear stress of 10 −1 to 10 Pa. A loss modulus of the CNT ink may have a larger value than that of storage modulus under shear stress of 10 −1 to 10 Pa. A content of the CNT may be 1 to 20 wt %. A content of the rheological modifier in the CNT ink may be 5 to 40 wt %. A weight ratio of the content of the CNT and the content of the rheological modifier in the CNT ink may be 1:1 to 1:5. The solvent may have a boiling point of 100° C. or less.

1 . Carbon nanotube (CNT) ink, comprising:
 a CNT;   a rheological modifier for controlling a flow of the CNT; and   a solvent,   wherein the CNT ink exhibits a liquid-like behavior under shear stress of 10 4  to 10 Pa.   
     
     
         2 . The CNT ink of  claim 1 , wherein a loss modulus of the CNT ink has a larger value than that of storage modulus under shear stress of 10 −1  to 10 Pa. 
     
     
         3 . The CNT ink of  claim 1 , wherein a content of the CNT is 1 to 20 wt %. 
     
     
         4 . The CNT ink of  claim 3 , wherein a content of the rheological modifier in the CNT ink is 5 to 40 wt %. 
     
     
         5 . The CNT ink of  claim 2 , wherein a weight ratio of the content of the CNT and the content of the rheological modifier in the CNT ink is 1:1 to 1:5. 
     
     
         6 . The CNT ink of  claim 1 , wherein the solvent has a boiling point of 100° C. or less.