锌粉粒径对水性车间底漆耐蚀性的影响
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摘要
以改性硅酸钾水溶液为成膜物,分别选用不同粒径的球状锌粉为填料,通过电化学开路电位法(OCP)、中性盐雾试验、扫描电子显微镜(SEM)等研究了锌粉粒径大小对水性车间底漆耐腐蚀性能的影响。SEM结果表明:锌粉粒径越小,其涂层的表面孔隙越少,孔隙直径越小,涂层中锌粉分布越均匀,涂层的致密性越好。OCP和盐雾试验结果表明:锌粉粒径越小,其涂层的耐腐蚀性能越优异;锌粉粒径较大时,随其粒径减小,其涂层的耐腐蚀性能显著提高;而锌粉粒径较小时,进一步降低锌粉粒径,其涂层的耐腐蚀性能提升较小。
The effect of the particle size of zinc powder on the corrosion resistance of waterborne shop primer was investigated. The modified potassium silicate aqueous solution was used as membrane material,and the spherical zinc powder with different particle size was used as filler. The corrosion resistance of the coating was analyzed by open-circuit potential(OCP) method,salt spray test and scanning electron microscope(SEM). The results of SEM showed that the coating with small particle size of zinc power had less surface porosity and smaller pore diameter,and zinc powder was evenly distributed in the coating. The results of OCP and salt spray test showed that the coating with small particle size of zinc power had excellent corrosion resistance. When the particle size of zinc powder used in the coating was larger,the corrosion resistance of the coating increased significantly by reducing the particle size of zinc powder. On the contrary,the corrosion resistance of the coating increased slightly by reducing the particle size of zinc powder when the particle size of zinc power was smaller.
The effect of the particle size of zinc powder on the corrosion resistance of waterborne shop primer was investigated. The modified potassium silicate aqueous solution was used as membrane material,and the spherical zinc powder with different particle size was used as filler. The corrosion resistance of the coating was analyzed by open-circuit potential(OCP) method,salt spray test and scanning electron microscope(SEM). The results of SEM showed that the coating with small particle size of zinc power had less surface porosity and smaller pore diameter,and zinc powder was evenly distributed in the coating. The results of OCP and salt spray test showed that the coating with small particle size of zinc power had excellent corrosion resistance. When the particle size of zinc powder used in the coating was larger,the corrosion resistance of the coating increased significantly by reducing the particle size of zinc powder. On the contrary,the corrosion resistance of the coating increased slightly by reducing the particle size of zinc powder when the particle size of zinc power was smaller.
引文
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[13]梁正彦,陈玲,赵振涌,等.球状锌粉对无机富锌漆阴极保护性能的影响[J].电镀与精饰,2014,36(9):9-13.
[14]Marchebois H,Joiret S,Savall C,et al.Characterization of Zinc-Rich Powder Coatings by EIS and Raman Spectroscopy[J].Surface&Coatings Technology,2002,157(2):151-161.
[15]Zhang L Y,Ma A,Jiang J H,et al.Anti-corrosion Performance of Waterborne Zn-Rich Coating with Modified Silicon-based Vehicle and Lamellar Zn(Al)Pigments[J].Progress in Natural Science Materials International,2012,22(4):326-333.
[16]杨阳,吴建华,徐静,等.醇溶型无机锌车间底漆的电化学行为研究[J].涂料工业,2018,48(12):16-20.
[2]Hindmarsh M W.The Development of Water Based Shop Primers[C].Osaka:Jasnaoe-Rina,2007:45-50.
[3]李敏,马吉康,王秀娟,等.车间底漆的研究进展及发展趋势[J].涂料技术与文摘,2008,29(8):11-14.
[4]任鑫,张宁,刘静,等.新一代水性无机锌车间底漆的研制[J].中国涂料,2015,30(10):41-43.
[5]郑磊,徐正斌,叶勇,等.自固化水性无机硅酸锌车间底漆的制备及应用探讨[J].涂料工业,2017,47(7):36-39.
[6]刘新.水性无机硅酸锌车间底漆[J].中国涂料,2007,22(7):50-51.
[7]和海青,苗展展,刘连河,等.船用车间底漆样品性能研究[J].涂料工业,2013,43(9):62-65.
[8]Canosa G,Alfieri P V,Giudice C A.Environmentally Friendly,Nano Lithium Silicate Anticorrosive Coatings[J].Progress in Organic Coatings,2012,73(2-3):178-185.
[9]Sorensen P A,Kiil S,Dam-Johansen K,et al.Anticorrosive Coatings:a Review[J].Journal of Coatings Technology and Research,2009,6(2):135-176.
[10]Parashar G,Bajpayee M,Kamani P K.Water-borne Non-Toxic High-Performance Inorganic Silicate Coatings[J].Surface Coatings International Part B:Coatings Transactions,2003,86(3):209-216.
[11]陈吉,罗敏,陈宇豪,等.无机富锌漆中锌粉形状对涂层重防腐蚀性能的影响[J].材料保护,2015,48(9):36-38.
[12]娄三钢,何治杭.锌粉形态对无机富锌涂层耐蚀性的影响[J].四川理工学院学报(自然科学版),2018,31(4):7-13.
[13]梁正彦,陈玲,赵振涌,等.球状锌粉对无机富锌漆阴极保护性能的影响[J].电镀与精饰,2014,36(9):9-13.
[14]Marchebois H,Joiret S,Savall C,et al.Characterization of Zinc-Rich Powder Coatings by EIS and Raman Spectroscopy[J].Surface&Coatings Technology,2002,157(2):151-161.
[15]Zhang L Y,Ma A,Jiang J H,et al.Anti-corrosion Performance of Waterborne Zn-Rich Coating with Modified Silicon-based Vehicle and Lamellar Zn(Al)Pigments[J].Progress in Natural Science Materials International,2012,22(4):326-333.
[16]杨阳,吴建华,徐静,等.醇溶型无机锌车间底漆的电化学行为研究[J].涂料工业,2018,48(12):16-20.