海洋环境下钢结构用水性无机富锌底漆的制备及性能  

Preparation and properties of a water-based inorganic zinc-rich primer for steel structures in marineenvironment

作　　者：李伟铭 郭占魁 王敬伟 LI Weiming;GUO Zhankui;WANG Jingwei(Dongying Hebang Chemical Co.,Ltd.,Dongying 257237,China;Shandong Longgang Silicon Technology Co.,Ltd.,Changyi 261300,China)

机构地区：[1]东营市赫邦化工有限公司,山东东营257237 [2]山东龙港硅业科技有限公司,山东昌邑261300

出　　处：《电镀与涂饰》2024年第4期137-143,共7页Electroplating & Finishing

基　　金：潍坊市科技发展计划(2018ZJ1180)。

摘　　要：[目的]海洋钢结构长时间暴露在高盐雾、高湿热、阳光曝晒等环境下会发生严重的腐蚀,而目前大多数水性无机富锌底漆含锌量大、成本高。[方法]采用自制高模数硅酸钾溶液作为基料,通过优化制备条件,获得了一种贮存稳定性高、耐腐蚀性能强、干燥时间短的水性无机富锌底漆。[结果]当采用季铵类稳定剂来制备硅酸钾溶液,增稠剂用量为8.6%(质量分数)时,得到的基料可在50℃下稳定贮存30 d。以基料与锌粉的质量比1.0∶1.2制备的涂层抵御中性盐雾腐蚀的时间长达5000 h。[结论]该底漆可用于海洋环境下的钢结构防腐。[Introduction]Marine steel structures suffer from severe corrosion due to the long-term exposure to high salt spray,high humidity,and sunlight.Currently,most water-based inorganic zinc-rich primers have high zinc content and high cost.[Method]A water-based inorganic zinc-rich primer with good storage stability,strong corrosion resistance,and short drying time was obtained by using a home-made high-modulus potassium silicate solution as the binder after optimizing the preparation conditions.[Result]The binder prepared from the potassium silicate solution stabilized by using a quaternary ammonium compound with 8.6%(mass fraction)of thickener could be stably stored at 50℃ for 30 days.The coating prepared with a mass ratio of binder to zinc powder 1.0:1.2 could endure up to 5000 hours of neutral salt spray corrosion.[Conclusion]This primer can be used for anticorrosion of steel structures in marine environment.

关 键 词：钢结构 水性无机富锌底漆 海洋环境 贮存稳定性 耐腐蚀 

分 类 号：TU561.67[建筑科学—建筑技术科学]