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首页> 外文期刊>Journal of Applied Polymer Science >Silica-poly(2-ethyl-2-oxazoline) hairy nanoparticle with high organic content as a material for anticorrosion nanocomposite coatings
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Silica-poly(2-ethyl-2-oxazoline) hairy nanoparticle with high organic content as a material for anticorrosion nanocomposite coatings

机译：二氧化硅 - 聚（2-乙基-2-恶唑啉）具有高有机含量的毛状纳米粒子作为防腐纳米复合材料涂料的材料

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摘要

A simple, versatile, and effective method for synthesizing a hydrophilic silica nanoparticle with high organic content and strong anti-corrosion effect reported. Cationic polymerization of 2-ethyl-2-oxazoline and its orientation around a silica nanoparticle, which is formed in-situ during the reaction, results a hairy nanoparticle with high organic content. Due to the high molar ratio of active atoms in polymer chains, the corrosion protection performance of nanocomposite coatings against corrosive medium greatly enhanced relative to blank neat coating sample. At low concentrations of hairy nanoparticles in coating, the corrosion current density dramatically reduced and corrosion potential displaced towards the anodic potentials, which mean the anodic inhibition mechanisms, suppressed the corrosion reactions. In addition, the organic and smooth surface of hairy nanoparticles is highly compatible with coating matrix, and no phase separation or cracking occurs at the interface of nanoparticle/matrix.
机译：报道了一种简单、通用、有效的合成高有机含量、强防腐性能亲水性二氧化硅纳米颗粒的方法。2-乙基-2-恶唑啉的阳离子聚合及其在反应过程中原位形成的二氧化硅纳米颗粒周围的取向，产生具有高有机含量的多毛纳米颗粒。由于聚合物链中活性原子的高摩尔比，纳米复合涂层对腐蚀介质的防腐蚀性能相对于空白纯涂层样品大大提高。当涂层中的毛状纳米颗粒浓度较低时，腐蚀电流密度显著降低，腐蚀电位向阳极电位转移，这意味着阳极抑制机制抑制了腐蚀反应。此外，毛茸茸的纳米颗粒的有机光滑表面与涂层基体高度相容，纳米颗粒/基体界面没有相分离或开裂。

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