【作者】 肖田鹏飞；

【导师】 黄丽；

【作者基本信息】 北京化工大学 ， 材料加工工程， 2008， 硕士

【摘要】 纳米环氧富锌复合涂料是由纳米粒子相、锌粉相与有机树脂复合而得。在涂料中引入纳米粒子相,将使涂料部分获得纳米粒子所带来的特殊效应,从而赋予涂料不同于常规的性能;锌粉的加入主要是为了提高漆膜的防腐蚀性能,由于锌比铁的化学电位低,所以加入后可以起到牺牲阳极材料的作用,保护基体不受腐蚀破坏,同时由于鳞片状的锌粉的径厚比大,从而起到更好的阻隔作用。本文主要研究了复合涂料的制备工艺过程与复合涂料的相应的性能,希望通过加入纳米粒子和鳞片状锌粉,可以提高环氧涂料的机械力学性能和防腐性能。本文的研究内容主要有以下几个方面:1)根据比较纳米粒子的分散效率,选择了最佳的复合改性剂,并且确定了改性剂的用量。2)对改性纳米粒子进行了红外光谱的测试和分析,结果证明了粒子表面被有效的改性。同时也用红外光谱分析了复合涂料的结构。3)用DSC的方法研究了复合涂料的非等温固化动力学。用不同的分析方法对固化反应活化能、反应级数进行了分析,对估算固化反应时间提供了参考。4)通过SEM研究了式样的缺口冲击断面形貌,研究纳米粒子与树脂基体的结合性以及在树脂中的分散性。5)通过EIS的研究复合涂料的防腐蚀性能。6)对涂料的机械力学性能和耐溶剂性能进行了测定。通过上述的对复合涂料性能的研究,最终确定出填料的最佳用量,以及最佳的复合涂料制备工艺流程。更多还原

【Abstract】 Nanoparticles zinc-rich epoxy coating is prepared by nanoparticles、zinc particles and epoxy resin.After add nanoparticles into coating,the coating can get special Characteristics from nanoparticles. The main perpose of adding zinc particles is to improve the anti-corrosion performance of coating.Compared with steel, the chemical potential of zinc is low.So zinc particles, as Sacrificial anode, play an important role in protect Fe-based body from being eroded. At the same time,lamellar zinc particles play a role of Barrier role with the big ratio of size and thick.This paper mainly studies Preparation and Characterization of composites coating. After add nanoparticles and zinc particles,the Mechanical properties and Anti-corrosion properties of coating can be improved.The research contains the following aspects:According to scattered efficiency of the modified nanoparticles, choose the best composite modifiers, and determine the amount of modifiers.Through the infrared analysis of the modified nanoparticles, prove that the surface of nanoparticles are effectively modified. Analyze the structure of composite coating with the use of infrared analysis.Using DSC analysis, study non-isothermal curing kinetics of composite coating. With the use of different analysis method,study activation energy and reaction order, and supply reference to the curing reaction.Through SEM method, study notched impact cross-section shape of the sample, study the scattered results of nanoparticles in resin matrix .Through EIS method, study the anti-corrosion performance of the composite coating.Study the mechanical properties and solvent resistance performance of the composite coating.Through this research ,determine the best optimum dosage of fillers and the best preparation process of composite coating.更多还原