聚苯胺颗粒对水性环氧树脂涂层防腐性能的影响

doi:10.12034/j.issn.1009-606X.218237

过程工程学报 ›› 2019, Vol. 19 ›› Issue (2): 419-426.DOI: 10.12034/j.issn.1009-606X.218237

聚苯胺颗粒对水性环氧树脂涂层防腐性能的影响

冯悠^1,2，张婧坤¹，薛杨¹，王好盛¹，张冬海^1*，陈运法¹

1. 中国科学院过程工程研究所多相复杂系统国家重点实验室，北京 100190 2. 中国科学院大学，北京 100049

收稿日期:2018-07-06 修回日期:2018-09-04 出版日期:2019-04-22 发布日期:2019-04-18
通讯作者: 张冬海 dhzhang@ipe.ac.cn
基金资助:
国家重点研发计划

Effect of polyaniline particles on corrosion resistance of waterborne epoxy resin coatings

You FENG^1,2, Jingkun ZHANG¹, Yang XUE¹, Haosheng WANG¹, Donghai ZHANG^1*, Yunfa CHEN¹

1. State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China 2. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2018-07-06 Revised:2018-09-04 Online:2019-04-22 Published:2019-04-18
Supported by:
National Key R&D Program of China

摘要/Abstract

摘要： 以盐酸为掺杂剂、过硫酸铵为氧化剂、咪唑类离子液体为稳定剂，采用化学氧化聚合法合成了导电聚苯胺(PANI)颗粒，将其分散到水性环氧树脂(ER)中制成聚苯胺水性环氧防腐涂层，研究了聚苯胺颗粒对涂层防腐性能和机械性能的影响。结果表明，添加聚苯胺显著提高了水性环氧涂层的阻隔性能，信号频率f=0.01 Hz时，PANI/ER涂层的阻抗(|Z|f=0.01Hz)均高于纯ER涂层。添加5.0wt% PANI时ER涂层阻隔性能最好，浸泡0~168 h时|Z|f=0.01Hz稳定在约8.0×108 Ω?cm2，浸泡168 h后|Z|f=0.01Hz=7.5×108 Ω?cm2，远高于ER和其它PANI/ER体系。中性盐雾实验结果表明，聚苯胺赋予了涂层钝化腐蚀的能力，显著提高了涂层的防腐性能，且其添加量越高，防腐性能越好。弯曲和冲击实验结果表明，涂层的机械性能随聚苯胺含量增加先上升后降低，当聚苯胺添加量不超过5.0wt%时，涂层的机械性能优异，附着力和韧性均较好；PANI添加量增至7.0wt%时，ER涂层的脆性明显变大，机械性能下降。聚苯胺在水性环氧体系中的最宜添加量为5.0wt%，此时涂层的机械性能良好，综合防腐性能最优。

关键词: 聚苯胺, 水性环氧树脂, 防腐性能, 机械性能

Abstract: Conductive polyaniline (PANI) particles were synthesized by chemical oxidation polymerization using hydrochloric acid as dopant, ammonium persulfate as oxidant and imidazole ionic liquid as stabilizer. Polyaniline waterborne epoxy anticorrosive coating was prepared by dispersing as-prepared polyaniline into waterborne epoxy resin (ER). And the effects of polyaniline particles on the corrosion resistance and mechanical properties of the coating were studied. Electrochemical impedance spectroscopy (EIS) results of the coating showed that the addition of polyaniline significantly improved the barrier properties of the aqueous epoxy coating. The impedance (|Z|f=0.01Hz) of all PANI/ER coatings were higher than pure ER coating. ER coating had the best barrier performance when adding 5.0wt% PANI, the |Z|f=0.01Hz value during 0~168 h immersion was stable at around 8.0?108 Ω?cm2 and after immersion for 168 h was 7.5?108 Ω?cm2, which was much higher than ER and other PANI/ER systems. The neutral salt spray test showed that the addition of polyaniline imparted the coating of the ability to passivate corrosion, significantly improving the corrosion resistance of the coating. The higher the PANI amount, the better the corrosion resistance. The bending and impact tests showed that the mechanical properties of the coating increased first and then decreased with the increase of polyaniline content. When the addition amount of polyaniline did not exceed 5.0wt%, the mechanical properties of the coating were excellent and the adhesion and toughness were both very good. When the PANI addition amount increased to 7.0wt%, the brittleness of the ER coating was remarkably strong, and the mechanical properties were degraded. The optimum addition amount of polyaniline in the aqueous epoxy system was 5.0wt%. Under this condition, the mechanical properties of the coating were good and the comprehensive anticorrosion performance was optimal.

Key words: polyaniline, waterborne epoxy resin, corrosion resistance, mechanical properties

冯悠张婧坤薛杨王好盛张冬海陈运法. 聚苯胺颗粒对水性环氧树脂涂层防腐性能的影响[J]. 过程工程学报, 2019, 19(2): 419-426.

You FENG Jingkun ZHANG Yang XUE Haosheng WANG Donghai ZHANG Yunfa CHEN. Effect of polyaniline particles on corrosion resistance of waterborne epoxy resin coatings[J]. Chin. J. Process Eng., 2019, 19(2): 419-426.

参考文献

[1] Kendig M, Mills D J.An historical perspective on the corrosion protection by paints [J]. Progress in Organic Coatings, 2017, 102: 53-59.[J].Progress in Organic Coatings, 2017, 102(part A):53-59 [2]Wang G, Yang J.Influences of glass flakes on fire protection and water resistance of waterborne intumescent fire resistive coating for steel structure[J].Progress in Organic Coatings, 2011, 70(2-3):150-156 [3] Lyon S B, Bingham R, Mills D J.Advances in corrosion protection by organic coatings: What we know and what we would like to know [J]. Progress in Organic Coatings, 2017, 102: 2-7.[J].Progress in Organic Coatings,, 2017, 102(part A):2-7 [4]Packham D E.Adhesive technology and sustainability[J].International Journal of Adhesion and Adhesives, 2009, 29(3):248-252 [5] Liu M, Mao X, Zhu H, et al.Water and corrosion resistance of epoxy–acrylic–amine waterborne coatings: Effects of resin molecular weight, polar group and hydrophobic segment [J]. Corrosion Science, 2013, 75: 106-113.[J].Corrosion Science, 2013, 75(-):106-113 [6] Francisco J S, Capelossi V R, Aoki I V.Evaluation of a sulfursilane anticorrosive pretreatment on galvannealed steel compared to phosphate under a waterborne epoxy coating [J]. Electrochimica Acta, 2014, 124: 128-136.[J].Electrochimica Acta, 2014, 124(-):128-136 [7]DeBerry D W.Modification of the electrochemical and corrosion behavior of stainless steels with an electroactive coating[J].Journal of the Electrochemical society, 1985, 132(5):1022-1026 [8]Wessling B.Corrosion prevention with an organic metal (polyaniline): surface ennobling,passivation,corrosion test results[J].Materials and Corrosion, 1996, 47(8):439-445 [9] 李志涛.聚2, 3-二甲基苯胺及其无机纳米复合物的制备及防腐性能研究 [D].重庆大学, 2014. [10]Li Z T.Preparation and Anticorrosive properties of Poly(2, 3-dimethylaniline) and its Composites with nano Inorganic Particles [D]. Chongqing University, 2014. [11]Chen Y, Wang X H, Li J, et al.Long-term anticorrosion behaviour of polyaniline on mild steel[J].Corrosion science, 2007, 49(7):3052-3063 [12]Sathiyanarayanan S, Muthkrishnan S, Venkatachari G.Corrosion protection of steel by polyaniline blended coating[J].Electrochimica Acta, 2006, 51(28):6313-6319 [13]Fahlman M, Jasty S, Epstein A J.Corrosion protection of ironsteel by emeraldine base polyaniline: an X-ray photoelectron spectroscopy study[J].Synthetic Metals, 1997, 85(1-3):1323-1326 [14]Cook A, Gabriel A, Siew D, et al.Corrosion protection of low carbon steel with polyaniline: passivation or inhibition[J].Current Applied Physics, 2004, 4(2-4):133-136 [15]Schauer T, Joos A, Dulog L, et al.Protection of iron against corrosion with polyaniline primers[J].Progress in Organic Coatings, 1998, 33(1):20-27 [16] 肖书虎.聚苯胺对铁基金属的伽伐尼阳极保护效应 [D].武汉大学, 2005. [17]Xiao S H.The Effect of Polyaniline to Galvanic Anodic Protection on Ferrous Metals [D]. Wuhan University, 2005. [18] 赵贺.导电高分子材料对金属防腐作用的研究 [D].天津工业大学, 2017. [19]Zhao H.Anticorrosion Effect of Conductive Polymer Materials on Metals [D].Tianjin Polytechnic University, 2017.

聚苯胺颗粒对水性环氧树脂涂层防腐性能的影响

Effect of polyaniline particles on corrosion resistance of waterborne epoxy resin coatings

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