CNT Conductive Composition With Soluble Polymer Path Formation

The patent changes the chemical structure parameters of the conductive polymer by introducing sulfonic acid groups and hydrophobic groups, transforming it from a solvent dispersion type to a soluble type. This parameter change enables the polymer to dissolve in organic solvents and form uniform coatings, while the sulfonic acid groups ensure adequate adhesion to carbon nanotubes, resolving the contradiction between processability and conductivity

The patent creates a composite material system combining carbon nanotubes with soluble conductive polymer (featuring sulfonic acid groups and hydrophobic groups). The carbon nanotubes provide the conductive framework, while the soluble conductive polymer fills the spaces between them and forms additional conductive paths along the nanotube surfaces, creating a synergistic composite that achieves both high conductivity and thermal conductivity while maintaining ease of processing

The soluble conductive polymer acts as an intermediary substance that fills the gaps between carbon nanotubes and adheres to their surfaces. The sulfonic acid groups in the polymer mediate the interaction with carbon nanotubes through adhesion, while the hydrophobic groups and solvent solubility enable the polymer to distribute uniformly and form continuous conductive paths along the nanotube circumferences, extending conductivity beyond mere contact points

The patent transitions the conductive path formation from a zero-dimensional contact point model to a one-dimensional linear path model along the carbon nanotube surfaces. The soluble conductive polymer enables conductive paths to extend along the circumference of carbon nanotubes, adding a dimensional aspect to conductivity that significantly increases the number and length of conductive pathways