【摘要】 采用水性环氧树脂作为成膜物质,聚乙烯醇磷酸酯(P-PVA)-盐酸、十二烷基苯磺酸(DBSA)、樟脑磺酸(CSA)水溶液作为掺杂剂,制备了聚苯胺/聚乙烯醇磷酸酯(PANI/P-PVA)导电水性防腐蚀涂料,研究了P-PVA和氧化剂用量、酸用量、聚合时间和膜干燥温度等因素对涂膜电导率和涂膜拉伸断裂强度的影响。结果表明,随着P-PVA用量增加,涂膜拉伸断裂强度增大,当干燥温度为80℃时,涂膜拉伸断裂强度最大,达到64MPa;当P-PVA质量分数为40%时,PANI/P-PVA涂膜的电导率最大,为7S·cm-1;且当CSA和DBSA浓度均为1.5mol/L,聚合时间为8h,n(APS)/n(An)=2时,制得的CSA-PANI/P-PVA、DBSA-PANI/P-PVA涂膜的电导率最大,分别为21.5S·cm-1和8.1S·cm-1;当c(HCl)=1.0mol/L,聚合时间为6h,n(APS)/n(An)=1时,制得HCl-PANI/P-PVA涂膜的电导率最大(16S·cm-1)。更多还原

【Abstract】 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 PPVA dosage.The tensile strength of coating films was the highest(64MPa)when the film drying temperature was80℃.The conductivity of PANI/P-PVA coating film was 7S·cm-1 when the mass fraction of P-PVA was 40%.The conductivity of CSA-PANI/P-PVA and DBSA-PANI/P-PVA was 21.5S·cm-1 and 8.1S·cm-1 when the contents of CSA and DBSA were 1.5mol/L,and polymerization time was 8hand APS/An molar ratio was 2,respectively.The conductivity of HCl-PANI/P-PVA was 16S·cm-1 when HCl content was 1.0 mol/L,and polymerization time was 6hand APS/An molar ratio was 1.0,respectively.更多还原