Preparation of Acid-doped PANI/P-PVA Waterborne Conductive Coatings

PANI/P-PVA waterborne electric conductive coatings doped with (P-PVA)-HC1, DBSA and CSA were prepared using waterborne epoxy resin as the film-forming material, and the effects of P-PVA and oxidant(APS) dosage, acid dosage, polymerization time and drying temperature on the conductivity and tensile strength of coating films were investigated. The results showed that the tensile strength of coating films increased with the increase of P-PVA dosage. The tensile strength of coating films was the highest (64 MPa) when the film drying temperature was 80 ℃. The conductivity of PANI/P-PVA coating film was 7 S·cm-1 when the mass fraction of P-PVA was 40%. The conductivity of CSA-PANI/P-PVA and DBSA-PANI/P-PVA was 21.5 S·cm-1 and 8.1 S·cm-1 when the contents of CSA and DBSA were 1.5 mol/L, and polymerization time was 8 h and APS/An molar ratio was 2, respectively. The conductivity of HCl-PANI/P-PVA was 16 S·cm-1 when HCl content was 1.0 mol/L, and polymerization time was 6 h and APS/An molar ratio was 1.0, respectively.