| 水性聚苯胺/海泡石/丙烯酸乳液复合防腐蚀涂层研究 |
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| 引用本文： | 陈宇,潘正凯,陈均.水性聚苯胺/海泡石/丙烯酸乳液复合防腐蚀涂层研究[J].表面技术,2017,46(7):26-31. |
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| 作者姓名： | 陈宇 潘正凯 陈均 |
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| 作者单位： | 安徽工业大学 化学与化工学院,安徽 马鞍山,243002;安徽工业大学 化学与化工学院,安徽 马鞍山,243002;安徽工业大学 化学与化工学院,安徽 马鞍山,243002 |
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| 基金项目： | 国家自然科学基金（U1460106）；马鞍山市科技局项目（2014-16） |
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| 摘 要： | 目的研究水性聚苯胺/海泡石/丙烯酸乳液复合防腐涂层在NaCl溶液中对马口铁的防腐效果。方法采用原位化学氧化聚合方法,制备了聚苯胺/海泡石复合材料,并以丙烯酸乳液为成膜物质,制备了水性聚苯胺/海泡石/丙烯酸乳液复合防腐蚀涂层材料。通过扫描电镜和EDX对聚苯胺/海泡石复合材料的结构和形貌进行了表征。利用电化学交流阻抗谱、塔菲尔曲线和硫酸铜点滴试验,研究了海泡石/苯胺投料比、聚苯胺/海泡石复合材料用量、磷酸浓度等对复合涂层防腐性能的影响。结果扫描电镜观察显示,苯胺/海泡石复合材料具有纤维状结构。电化学测试及硫酸铜点滴试验表明,当海泡石/苯胺投料比为6:10、聚苯胺/海泡石复合材料用量为0.2%、磷酸浓度为0.1 mol/L时,其腐蚀电流密度为1.013X10~(-6)A/cm~2,腐蚀电位为-0.385V,极化电阻为14 350.8?,耐硫酸铜腐蚀时间为275 s,防腐效果最佳。结论当海泡石/苯胺投料比为6:10、聚苯胺/海泡石复合材料用量为0.2%、磷酸浓度为0.1 mol/L时,水性聚苯胺/海泡石/丙烯酸乳液复合防腐涂层对马口铁具有最佳的防腐效果。
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| 关 键 词： | 聚苯胺 海泡石 丙烯酸乳液 防腐蚀 涂层 |
| 收稿时间： | 2017/3/20 0:00:00 |
| 修稿时间： | 2017/7/20 0:00:00 |
Waterborne Polyaniline/Sepiolite/Acrylic Emulsion Composite Anticorrosive Coating |
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| CHEN Yu,PAN Zheng-kai and CHEN Jun.Waterborne Polyaniline/Sepiolite/Acrylic Emulsion Composite Anticorrosive Coating[J].Surface Technology,2017,46(7):26-31. |
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| Authors: | CHEN Yu PAN Zheng-kai and CHEN Jun |
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| Affiliation: | School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma''anshan 243002, China,School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma''anshan 243002, China and School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma''anshan 243002, China |
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| Abstract: | The work aims to study anti-corrosion effects of waterborne polyaniline/sepiolite/acrylic emulsion composite coatings on tinplate in sodium chloride medium.Waterborne polyaniline/sepiolite/acrylic emulsion composite anti-corrosive coating was prepared by blending polyaniline/sepiolite composite synthesized in the method of in-situ chemical oxidization po-lymerization with acrylic emulsion as film-forming material. Structure and morphology of the polyaniline/sepiolite composite were characterized using scanning electron microscopy and EDX. Effects of sepiolite/aniline feed ratio, polyaniline/sepiolite composite consumption and phosphoric acid concentration on corrosion resistance of composite coating were studied using electrochemical impedance-spectra, Tafel curve and copper sulfate dripping test.SEM indicated that polyaniline/sepiolite com-posite had fibrous structure. Electrochemical test and copper sulfate dripping test showed that polyaniline/sepiolite/acrylic emul-sion composite coating exhibited the best anticorrosive performance. Provided with sepiolite/aniline feed ratio of 6:10, polyani-line/sepiolite composite consumption of 0.2% and phosphoric acid concentration of 0.1 mol/L, the corrosion current was 1.013×10-6A/cm2, corrosion potential was -0.385 V and polarization resistance was 14350.8?. Polyaniline/sepiolite/acrylic emulsion composite coating has the best anti-corrosion effect on tinplate provided with sepiolite/aniline feed ratio of 6:10, po-lyaniline/ sepiolite composite consumption of 0.2% and phosphoric acid concentration of 0.1 mol/L. |
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| Keywords: | polyaniline sepiolite acrylic emulsion anti-corrosion coating |
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