磷酸锌含量对环氧树脂-硅氧烷涂层性能的影响
Influence of Zinc Phosphate Content on the Properties of Epoxy Resin-Siloxane Coating
摘 要
以磷酸钠、硫酸锌、γ-氨丙基三乙氧基硅烷（KH-550）和环氧树脂（E51）为主要原料，采用沉淀法合成磷酸锌，制备了不同磷酸锌含量的环氧树脂-硅氧烷涂层。采用傅里叶变换红外光谱、扫描电镜和X射线衍射等测试技术对所制备涂层进行了表征；通过电化学阻抗谱评价了涂层的耐蚀性。结果表明：KH-550成功接枝到环氧树脂上，磷酸锌粉末呈片状结构，主要成分为Zn3（PO4）2·4H2O；当加入的磷酸锌控制在2.5%（质量分数）左右时，环氧树脂-硅氧烷涂层的阻抗高，耐蚀性好。
环氧树脂-硅氧烷
电化学阻抗谱
zinc phosphate
epoxy resin-siloxane
electrochemical impedance spectroscopy (EIS)
Abstract
Sodium phosphate,zinc sulfate,γ-aminopropyltriethoxysilane (KH-550) and epoxy resin (E51) were used as main raw materials to synthesize zinc phosphate by precipitation method.The epoxy resin-siloxane coatings containing different concentrations of zinc phosphate were prepared.The prepared coatings were characterized by Fourier transform infrared spectroscopy,scanning electron microscopy and X-ray diffraction.The corrosion resistance of the coatings was evaluated by electrochemical impedance spectroscopy (EIS).The results show that epoxy resin was grafted by KH-550 successfully.The zinc phosphate powder was irregular in structure and mainly composed of Zn3(PO4)2·4H2O.When the amount of zinc phosphate added into the coating was controlled around 2.5%(mass fraction),the coating had high impedance and good corrosion resistance.
中图分类号 TG174.4 DOI 10.11973/fsyfh-201904005
所属栏目 试验研究
基金项目 广东省质量技术监督局科技项目（2017CT14）
收稿日期 2018/7/4
修改稿日期
网络出版日期
作者单位点击查看
联系人作者刘光明(gemliu@126.com)
引用该论文: DING Jinsen,LAN Xiuling,LIU Guangming,ZHOU Jiesheng,DENG Peigen,WU Wendong. Influence of Zinc Phosphate Content on the Properties of Epoxy Resin-Siloxane Coating[J]. Corrosion & Protection, 2019, 40(4): 261
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参考文献
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【3】NADERI R,ATTAR M M. The role of zinc aluminum phosphate anticorrosive pigment in protective performance and cathodic disbondment of epoxy coating[J]. Corrosion Science,2010,52(4):1291-1296.
【4】REZAEE N,ATTAR M M,RAMEZANZADEH B. Studying corrosion performance,microstructure and adhesion properties of a room temperature zinc phosphate conversion coating containing Mn2+ on mild steel[J]. Surface and Coatings Technology,2013,236:361-367.
【5】VAN PHUONG N,MOON S,CHANG D,et al. Effect of microstructure on the zinc phosphate conversion coatings on magnesium alloy AZ91[J]. Applied Surface Science,2013,264:70-78.
【6】HAO Y S,LIU F C,HAN E H,et al. The mechanism of inhibition by zinc phosphate in an epoxy coating[J]. Corrosion Science,2013,69:77-86.
【7】SALAHUDDIN N A. Layered silicate/epoxy nanocomposites:synthesis,characterization and properties[J]. Polymers for Advanced Technologies,2004,15(5):251-259.
【8】IM J S,JEONG E,IN S J,et al. The impact of fluorinated MWCNT additives on the enhanced dynamic mechanical properties of E-beam-cured epoxy[J]. Composites Science and Technology,2010,70(5):763-768.
【9】SHAO Y W,JIA C,MENG G Z,et al. The role of a zinc phosphate pigment in the corrosion of scratched epoxy-coated steel[J]. Corrosion Science,2009,51(2):371-379.
【10】SAKHRI A,PERRIN F X,ARAGON E,et al. Chlorinated rubber paints for corrosion prevention of mild steel:A comparison between zinc phosphate and polyaniline pigments[J]. Corrosion Science,2010,52(3):901-909.
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【12】BASKARAN I,NARAYANAN T S N S,STEPHEN A. Effect of accelerators and stabilizers on the formation and characteristics of electroless Ni-P deposits[J]. Materials Chemistry and Physics,2006,99(1):117-126.
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