以微米/纳米二氧化钛(TiO_2)为复合填料制备了聚氨酯防腐涂层,采用电化学阻抗谱(EIS)评估含不同用量纳米TiO_2涂层在0.5 mol/L氯化钠溶液中的耐腐蚀性,结果表明,纳米二氧化钛能有效提高涂层的抗腐蚀能力,其适宜用量为1.0%～1.5%.热分析(包括DSC和TG)结果表明,在有大尺度填料存在的条件下,添加纳米二氧化钛对涂层的热稳定性影响不大.
Using nano/micro size composition as filler, a series of anticorrosive polyurethane coatings with different contents of nano-TiO_2 particles were prepared. The anticorrosion performance of the coatings in 0.5 mol/L NaCl solution was evaluated by electrochemical impedance spectroscopy (EIS). The results indicated that the nano-TiO_2 can effectively improve the corrosion resistance of the coating, and its suitable dosage is in range of 1.0%-1.5%. The experiment results of thermal analyses including DSC and TG proved that the nano-TiO_2 does not significantly decrease the thermal stability of polyurethane coating under the condition that there exists large-size filler.
参考文献
| [1] | Hong Yun;Jing Li;Hong-Bo Chen;Chang-Jian Lin .A study on the N-, S- and Cl-modified nano-TiO{sub}2 coatings for corrosion protection of stainless steel[J].Electrochimica Acta,2007(24):6679-6685. |
| [2] | G.X. Shen;R.G. Du;Y.C. Chen .Study on Hydrophobic Nano-Titanium Dioxide Coatings for Improvement in Corrosion Resistance of Type 316L Stainless Steel[J].Corrosion: The Journal of Science and Engineering,2005(10):943-950. |
| [3] | Bin X;Zhang ST;Huang WZ;Hou BR .Effect of nano-TiO(2)on MP-25 resin[J].Journal of Applied Polymer Science,2008(3):1598-1603. |
| [4] | 王毅,李瑛,王福会,王恩德.TiO2纳米粒子改性有机醇酸涂料性能研究[J].腐蚀科学与防护技术,2004(05):265-267. |
| [5] | 王毅 .纳米二氧化钛和纳米二氧化硅在有机涂料中的应用研究[D].东北大学,2003. |
| [6] | MONETTA T;BELLUCCI F;NICODEMO L et al.Protective properties of epoxy-based organic coatings on mild steel[J].Progress in Organic Coatings,1993,21(04):353-369. |
| [7] | MISKOVIC-STANKOVIC V B;DRAZIC D M;TEODOROVIC M J .Electrolyte penetration through epoxy coatings electrodeposited on steel[J].Corrosion Science,1995,37(02):241-252. |
| [8] | MANSFELD F;TSAI C H .Determination of coating deterioration with EIS--I:Basic relationships[J].Corrosion,1991,47(12):958-963. |
| [9] | Mansfeld F. .USE OF ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY FOR THE STUDY OF CORROSION PROTECTION BY POLYMER COATINGS [Review][J].Journal of Applied Electrochemistry,1995(3):187-202. |
| [10] | Hu JM.;Zhang JQ.;Cao CN. .Determination of water uptake and diffusion of Cl- ion in epoxy primer on aluminum alloys in NaCl solution by electrochemical impedance spectroscopy [Review][J].Progress in Organic Coatings: An International Review Journal,2003(4):273-279. |
| [11] | 徐永祥,严川伟,高延敏,曹楚南.水汽在涂层中的扩散传输行为和存在形式[J].物理化学学报,2002(07):649-652. |
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