不同粒径PANI/SiO<sub>2</sub>对环氧涂层防腐性能的影响

doi:10.11896/cldb.20090290

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Abstract Silicon dioxide (SiO₂) particles with different sizes were coated by polyaniline (PANI) using in-situ polymerization and then the appearance of SiO₂ changed from white to dark green. The results of FTIR showed that PANI had coated on the surface of SiO₂ particles. The coating rate of PANI was studied by thermogravimetry and the results showed that the coating rate increased with the decrease of SiO₂ particle size. The PANI coating rate of 1 250 meshes SiO₂ particles reached 1.76% (mass fraction, the same below). Anti-corrosion coating was prepared by adding PANI/SiO₂ particles into the epoxy resin matrix. It was found that the particle size of PANI/SiO₂ has an important influence on the mechanical and anti-corrosion properties of the coating. With the increase of particle size, the adhesion, impact resistance and wear resistance of the coating increased but the hardness of the coating decreased. The structure of coating by adding 400 meshes PANI/SiO₂ particles was compact and this coating still showed good anti-corrosion properties immersing in 3.5% NaCl solution after 30 days, which should be related to the PANI passivation to metal.

Key words： polyaniline(PANI) silicon dioxide coating anti-corrosion particle size epoxy coating

Published: 25 December 2021 Online: 2021-12-27

CLC number:

TB304

Fund:This work was financially supported by the Science and Technology Plan Project of Xi'an (2017068CG/R C031〈SXKD007〉) and Ph.D. Start Fund of Shaanxi University of Science and Technology (BJ16-10).

About author: Jiangbo Fengreceived his B.E. degree in applied chemistry from Shangluo University in 2017.He is currently pursuing his master's degree at the College of Chemistry and Chemical Engineering,Shaanxi Univer-sity of Science and Technology under the supervision of associate professor Jingping Wang.His research has focused on heavy anti-corrosion coating. Xuechuan Wangreceived his B. E. degree in chemical industry from Shaanxi University of Science & Technology in 1984, received his Ph.D. degree from the Sichuan University in 2003.In 1999,he conducted a three-month cooperation visit at the BOEHME Leather Research Center in Germany. In 2007,he was elected to the National Science and Technology Department's National Talents of the New Century Talent Project.In 2011,he was hired as a second level professor and was awarded Outstanding Contribution Expert of Shaanxi Province.In 2012,he was granted special government allowance from the State Council.In April 2015.he served as vice president Shaanxi University of Science ＆ Technology.His research interests include synthesis theory and mechanism of environmentally friendly fine chemicals and animal protein biomass resource and leather clean production.

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	FENG Jiangbo
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Cite this article:

FENG Jiangbo,WANG Jingping,YUAN Huiying, et al. Effect of PANI/SiO₂ Particle Size on Anti-corrosion Properties of Epoxy Coating[J]. Materials Reports, 2021, 35(24): 24182-24188.

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http://www.mater-rep.com/EN/10.11896/cldb.20090290 OR http://www.mater-rep.com/EN/Y2021/V35/I24/24182

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