改性水滑石的制备及对环氧富锌漆性能的影响

发布时间：2018-11-06 13:06

【摘要】：目的改善有机涂层和无机缓蚀剂相容性差的问题,实现缓蚀剂的可控释放,提高有机涂层的防护性能。方法用共沉淀方法将缓蚀剂钼酸根离子插入镁铝水滑石中,并用硅烷偶联剂KH560对其表面接枝改性来提高填料在富锌涂层中的分散性。结果 XRD、FTIR光谱分析结果表明,水滑石的层间距离增大,钼酸根成功装载进水滑石层中,在水滑石表面成功接枝硅烷偶联剂KH560。结论通过将该填料添加到环氧富锌漆中,发现涂层的附着力、柔韧性均没有发生明显的下降,表明填料在环氧富锌涂层中分散均匀,对涂层的力学性能影响较小。结合电化学阻抗谱技术对比研究添加填料与未添加填料的涂层浸泡在Na Cl溶液中的腐蚀行为,表明了该填料的添加可以提高富锌漆的耐腐蚀性能。
[Abstract]:Aim to improve the poor compatibility of organic coatings and inorganic corrosion inhibitors, to realize the controllable release of corrosion inhibitors and to improve the protective properties of organic coatings. Methods the corrosion inhibitor molybdate ion was inserted into the magnesium aluminum hydrotalcite by coprecipitation method. The dispersion of the filler in the zinc-rich coating was improved by grafting modification with silane coupling agent KH560. Results the results of XRD,FTIR spectrum analysis showed that when the interlayer distance of hydrotalcite increased, molybdate was successfully loaded into the influent talc layer, and the silane coupling agent KH560. was successfully grafted on the surface of hydrotalcite. Conclusion by adding the filler to the epoxy zinc-rich paint, it was found that the adhesion and flexibility of the coating did not decrease obviously, which indicated that the filler dispersed uniformly in the epoxy zinc-rich coating and had little effect on the mechanical properties of the coating. The corrosion behavior of coating with or without filler in Na Cl solution was studied by electrochemical impedance spectroscopy (EIS). The results show that the addition of filler can improve the corrosion resistance of zinc-rich paint.
【作者单位】：南昌航空大学材料科学与工程学院;上海宇航系统工程研究所;国家电投江西电力有限公司景德镇发电厂;西安交通大学理学院;
【基金】：国家自然科学基金(51161022) 江西省教育厅项目(DB201301133,DB201301050)~~
【分类号】：TG174.42

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