The Preparation Of Nano Yttria Composite Materials And Its Application Research On Epoxy Resin Coatings

Epoxy anti-corrosion coatings are currently the most widely used film forming resin,epoxy anti-corrosion coatings exist but crisp, easy to aging, corrosion resistance is not ideal andother shortcomings, applications have some limitations, often difficult to meet practicalapplication in the field of heavy-duty requirements, and therefore is to develop a high-performance resin modified basis for anti-corrosion coating. Because rare metal oxidenanoparticles materials with unique heat, corrosion, acid and other excellent performance, andaffordable (such as Y2O3and CeO2, etc.), the nano-Y2O3andCeO2modified epoxyresin is usedin the preparation of anti-corrosion coatings. Nanoparticles may be filled not only conventionalcoating inevitable "pore structure", greatly improving the compactness of the coating, but alsocan delayaging coating, extendthe life of the corrosion.Because lamellar nanoparticles because of its flat structure, which can reduce the surface,after a silane coupling agent treatment, better mixed with paint, and energy and a goodcombination of metal materials to prevent erosion of external corrosive media, reducing theoxygen diffusion rate through the coating, effectively prevent the oxidation of steel and othermaterials. Therefore, through the preparation of layered Y2O3and CeO2compositenanoparticles, and construction of steel anticorrosion coating is a focus in the study of thisarticle. Specific studies are as follows:First of all, preparation of lamellar Y2O3nanoparticles.The use of urea homogeneousprecipitation semi-open system.By changing the preparation process to obtain precursor Y2O3nanoparticles, selecting a different sintering conditions obtain a lamellar nano-Y2O3.Thepreparation process is to determine the temperature of the reaction150℃-5h, sintering3h at600℃. The results showed that: with the increase of the reaction temperature, the easier thelamellar nanoparticles generated; The lower the sintering temperature, lamellar nanoparticlesare more obvious, the more loose accumulation.Secondly, preparation of lamellar Y2O3and CeO2composite nanoparticles.The use of ureahomogeneous precipitation semi-open system. By changing the preparation process to obtainprecursor Y2O3and CeO2composite nanoparticles, select a different sintering conditions toobtain a lamellar nano-Y2O3/CeO2composite nanoparticles.The preparation process is to determine the temperature of the reaction150℃-5h, sintering3h at600℃. The results showedthat: The greater the amount of cerium, lamellar more obvious, the more granular. This spatialstructure of yttrium and cerium ions is related; The reaction temperature is higher, lamellarmore obvious, the more loose accumulation; The higher the sintering temperature, lamellarmore obvious.Finally, the preparation of anti-corrosion coatings, by using silane coupling agent Y2O3,CeO2and Y2O3/CeO2composite nanoparticles coated modified, and then were added to theepoxy resin coatings. By testing the performance of its electrochemical impedance, and adddifferent nanoparticles were analyzed. The results showed that: adding1:1lamellar nano-Y2O3/CeO2composite particles molded epoxy coatings to add value than other particles. Aftersimulation corrosive salt solution for30days of immersion, blank plate and pure epoxy varnishcoating corrosion, serious corrosion coating; Add three kinds of rare earth component epoxypaint coating almost no corrosion. Description nano rare earth oxide in the anti-corrosion epoxypaint can improve the corrosion resistance of epoxyresin.