Preparation of Acid-doped PANI/P-PVA Waterborne Conductive Coatings
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64 MPa; 当P-PVA质量分数为40%时, PANI/P-PVA涂膜的电导率最大, 为7 S·cm-1; 且当CSA和DBSA浓度均为1.5 mol/L, 聚合时间为8 h, 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21.5 S·cm-1和8.1 S·cm-1; 当c(HCl)=1.0 mol/L, 聚合时间为6 h, n(APS)/n(An)=1时, 制得HCl-PANI/P-PVA涂膜的电导率最大(16 S·cm-1)。
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 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.
中图分类号 TQ630.7
所属栏目 试验研究
基金项目 吉林省科技发展计划项目-社会发展重点项目(20110405); 吉林省教育厅“十二五”科学技术研究项目[吉教科合字(2012)第95号]; 吉林省省校合作技术开发项目(吉工信科技2011-507)
收稿日期 2014/2/26
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备注张兰河(1971-),教授,博士,从事水处理理论与工艺的研究,
引用该论文: ZHANG Lan-he,LI Yao-song,PANG Xiang-rui,ZHANG Ya. Preparation of Acid-doped PANI/P-PVA Waterborne Conductive Coatings[J]. Corrosion & Protection, 2014, 35(7): 679
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【9】王娜,程克奇,吴航,等. 导电聚苯胺/水性环氧树脂防腐涂料的制备及防腐性能[J]. 材料研究学报,2013,27(4):432-438.
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【13】SUZUKI M,YOSHIDA T,KOYAMA T,et al. Ionic conduction in partially phosphorylated poly (vinyl alcohol) as polymer electrolytes[J]. Polymer,2000,41(12):4531-4536.
【14】SIMOES A M,TORRES J,PICCIOCHI R,et al. Corrosion inhibition at galvanized steel cut edges by phosphate pigments[J]. Electrochim Acta,2009,54(15):3857-3865.
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