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Preparation and Performance Characterization of Zinc Silicate-Potassium Silicate Waterborne Anticorrosive Paint

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  • a.College of Civil Engineering,b.Anhui Province Key Laboratory of Building Structure and Underground Engineering,Anhui Jianzhu University,Hefei 230601,China

Received date: 2023-02-17

  Revised date: 2023-03-14

  Accepted date: 2023-04-15

  Online published: 2023-08-25

Abstract

In order to solve the problems of volatile organic compounds (VOC) and easy aging of organic solvent based anti-corrosion coatings commonly used for reinforcing steel bars in autoclaved aerated concrete (AAC) plates,waterborne inorganic silicate anti-corrosion coatings were prepared by using modified high-modulus potassium silicate solution,zinc silicate powder and additives.The influence of zinc silicate content on the workability,adhesion and bonding strength of the coating was studied.The chemical composition,phase composition,and microstructure of the coating were characterized,and the anti-corrosion performance of the coating was analyzed.Results showed that the bonding strength of the paint gradually decreased with the increase of the zinc silicate content.And the adhesive strength increased first and then decreased as increasing the content of zinc silicate.When the content of zinc silicate was 50% (mass fraction),the paint exhibited superior physical,mechanical and anti-corrosion properties due to the suitable ratio of film-forming material to pigment and filler.The adhesion and bonding strength were 3.9 MPa and 1.8 MPa,respectively.Moreover,after immersion in the solution with 3.5%NaCl for 7 d,the open circuit and polarization resistance of the paint were -221 mV,39 470 Ω·cm2,respectively.The flat and smooth paint,the passivation film on the surface of the substrate,and the relatively dense hydrated calcium silicate at the interface between AAC and the coating provided a good physical shielding for the substrate.

Cite this article

SHAN Qingting, XU Rongsheng, ZHANG Miaomiao, LIN Jian . Preparation and Performance Characterization of Zinc Silicate-Potassium Silicate Waterborne Anticorrosive Paint[J]. Materials Protection, 2023 , 56(8) : 124 -132 . DOI: 10.16577/j.issn.1001-1560.2023.0196

References

[1] 张大鹏,郐国雄,许 航,等.蒸压砂加气混凝土墙板在装配式钢结构体系中的应用研究[J].钢结构,2016,31(1): 89-93.ZHANG D P,KUAI G X,XU H,et al.Research on the application of alc in assembled steel structure system[J].Steel Structure,2016,31(1): 89-93.

[2] 郭晓潞,宋 猛.蒸压加气混凝土的孔结构及表征方法研究进展[J].材料导报,2018,32(增刊2): 440-445.GUO X L,SONG M.Development on pore structure and characterization of autoclaved aerated concrete[J].Materials Reports,2018,32(S2): 440-445.

[3] 徐春一,武沾青,阎 磊.基于释放法蒸压加气混凝土板内钢筋自应力研究[J].工程力学,2020,37(增刊1):327-332.XUN C Y,WU Z Q,YAN L.Research on self-stress of steel bars in autoclaved aerated concrete slab based on release method[J].Engineering Mechanics,2020,37(S1):327-332.

[4] 张 艳,戴 雷,黄友元,等.石墨烯水性复合防腐涂料的研究进展[J].表面技术,2017,46(10): 42-49.ZHANG Y,DAI L,HUANG Y Y,et al.Research on graphene - based waterborne composite anticorrosive coatings[J].Surface Technology,2017,46(10): 42-49.

[5] GAO M P,TENG W,DU Z X,et al.Source profiles and emission factors of VOCs from solvent-based architectural coatings and their contributions to ozone and secondary organic aerosol formation in China[J].Chemosphere,2021,275(3): 129815.

[6] 高美平,邵 霞,聂 磊,等.中国建筑涂料使用VOCs排放因子及排放清单的建立[J].环境科学,2019,40(3): 1 152-1 162.GAO M P,SHAO X,NIE L,et al.Establishment of VOCs emissions factor and emissions inventory from using of architectural coatings in china [J].Environmental Science,2019,40(3): 1 152-1 162.

[7] 王 姚,邓跃全,贾 彬,等.水性微纳米薄层石墨防腐涂料的制备研究[J].建筑材料学报,2021,24(5):1 018-1 023.WANG Y,DENG Y Q,JIA B,et al.Research on preparation of waterborne micro-nano thin layer graphite anti-corrosive coating[J].Journal of Building Materials,2021,24(5): 1 018-1 023.

[8] 王劲涛.环氧改性水性硅酸盐富锌涂料防腐性能及机理[D].大连: 大连海事大学,2020.WANG J T.Corrosion resistance and mechanism of epoxy modified water based silicate zinc rich coating[D].Dalian:Dalian Maritime University,2020.

[9] 谢炎坤,刘伟区,王政芳.有机-无机杂化对无机富锌涂料性能的影响[J].精细化工,2018,35(4): 710-715.XIE Y K,LIU W Q,WANG Z F.Influence of organic-inorganic hybrid on properties of inorganic zinc-rich coatings[J].Fine Chemicals,2018,35(4): 710-715.

[10] LIU L,CHEN L,WANG Z Q,et al.Preparation and Properties of Water-Borne Inorganic Zinc-Rich Coating in Hydraulic Engineering Metal Structures[J].2015(423-426):861-865.

[11] 周春婧.硅酸盐水性无机富锌防腐涂层的制备及性能研究[D].沈阳: 沈阳工业大学,2014.ZHOU C J.Preparation of silicate waterborne inorganic zincrich anticorrosion coatings and studies onits performance[D].Shenyang: Shenyang University of Technology,2014.

[12] 王 尚.水性丙烯酸防腐涂料的制备及其性能[D].北京: 北京化工大学,2016.WANG S.The preparation and performance of waterborne acrylic anticorrosive coatings[D].Beijing: Beijing University of Chemical Technology,2016.

[13] CHENG L H,LIU C L,HAN D J,et al.Effect of graphene on corrosion resistance of waterborne inorganic zinc - rich coatings[J].Journal of Alloys and Compounds,2018,774:255-264.

[14] YANG X H,ZHU W L.The performance of a waterborne zinc-rich coating from sodium silicate solution catalyzed by ammonium acetate[J].Protection of Metals and Physical Chemistry of Surfaces,2017,53(2): 299-305.

[15] ZHANG L Y,MA A B,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] GOODARZI I M,FA RZAM M,SHISHESAZ M R,et al.Eco-friendly,acrylic resin-modified potassium silicate as water-based vehicle for anticorrosive zinc-rich primers[J].Journal of Applied Polymer Science,2014,131 (12):469-474.

[17] LIM H,HONG Y X,YU H,et al.A novel high solar reflective coating based on potassium silicate for track slab in high-speed railway[J].Construction and Building Materials,2019,225: 900-908.

[18] 乔宏霞,温少勇,王鹏辉,等.氯氧镁钢筋混凝土中涂料钢筋腐蚀的电化学特性[J].建筑材料学报,2019,22(6): 999-1 006.QIAO H X,WEN S Y,WANG P H,et al.Electrochemical characteristics of coated steel bars corrosion of magnesium oxychloride reinforced concrete[J].Journal of Building Materials,2019,22(6): 999-1 006.

[19] 赵 旭.水性硅酸盐船舶防腐涂层的电化学交流阻抗谱研究[D].大连: 大连海事大学,2017.ZHAO X.Electrochemical impedance spectroscopy research of waterborne silicate anticorrosion coatings for ships [D].Dalian: Dalian Maritime University,2017.

[20] 周 磊.硅丙乳液改性高模数硅酸钾水性无机富锌涂层的研究[D].长沙:湖南大学,2014.ZHOU L.Study on silicone-acrylic emulsion modified high SiO2/K2O molar ratio potassium silicate waterborne inorganic zinc - rich coating[D].Changsha: Hunan University,2014.

[21] 吴德权,张达威,潘梦秋,等.新型活化环氧富锌涂层的耐腐蚀性研究[J].涂料工业,2020,50(8): 46-51.WU D Q,ZHANG D W,PAN M Q,et al.Corrosion resistance property of the advance activated zinc-rich epoxy coatings[J].Paint & Coatings Industry,2020,50(8): 46-51.

[22] ZHAO X,QI Y H,ZHANG Z P,et al.Electrochemical impedance spectroscopy investigation on the corrosive behaviour of waterborne silicate micaceous iron oxide coatings in seawater[J].Coatings,2019,9(7): 415.

[23] 丁 锐,桂泰江,蒋建明,等.应用EIS 研究改性无溶剂环氧防腐涂料的防护性能和腐蚀特征[J].真空学与技术学报,2017,37(2): 165-176.DING R,GUI T J,JIANG J M,et al.Electrochemical impedance spectroscopy study of corrosion behavior of solventfree epoxy coatings on steel substrate[J].Journal of Vacuum Science and Technology,2017,37(2): 165-176.

[24] GHOSH S K,WAGHOO G,KALITA A,et al.Chloridefree biodegradable organic acid hydrolyzed zinc silicate coating[J].Progress in Organic Coatings,2012,73(1):70-75.
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