环氧防腐蚀涂料是能够在苛刻腐蚀环境下起到保护基材的高性能涂料,在石油、化工、海洋工程等防腐蚀领域应用广泛。利用聚氧乙烯山梨糖醇酐单硬酸酯(TW60)对无机蒙脱土进行改性,制备了改性蒙脱土/水性环氧防腐蚀涂料,并对其表观性能、附着力、铅笔硬度、耐冲击性能、耐酸碱性、耐盐水性等进行研究。结果表明:当改性蒙脱土质量分数为4%时,改性蒙脱土/水性环氧防腐蚀涂层的附着力为1级,铅笔硬度为3H,耐冲击性能为55cm;分别在10% H2SO4溶液中浸泡48h、在饱和Ca(OH)2溶液中浸泡48h、在3% NaCl溶液中浸泡168h后,涂层表面均无起皮、无脱落、无起泡现象。
Epoxy anti-corrosive coatings are high-performance coatings that can protect the substrate in harsh corrosive environment,and are widely used in anti-corrosion fields such as petroleum,chemical industry and marine engineering.Polyoxyethylene sorbitan monoester (TW60) was used to modify inorganic montmorillonite to obtain modified montmorillonite/waterborne epoxy anticorrosive coatings.The apparent properties,adhesion,pencil hardness,impact resistance,water resistance,acid and alkali resistance and salt water resistance of modified montmorillonite/waterborne epoxy anticorrosive coatings was studied.The results revealed that when the mass fraction of modified montmorillonite 4%,the adhesion of modified montmorillonite/waterborne epoxy anticorrosive coating was grade 1 and the pencil hardness was 3H,while the impact resistance was 55cm.After soaking in 10% H2SO4 solution for 48h,saturated Ca(OH)2 solution for 48h,and 3% NaCl solution for 168h,respectively,the coating surface had no skinning,peeling and blistering.
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基金资助
2023年度广东省普通高校创新团队项目(自然科学)(2023KCXTD073);广州工程技术职业学院2021年度校级应用技术协同创新中心(高性能涂层聚合物应用技术协同创新中心)
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