硅灰掺量对无机磷酸盐涂料防腐性能的影响  

Effect of Silica Fume Content on the Corrosion Resistance of Inorganic Phosphate Coatings

作　　者：单春明 杨春生 杨建明[3] 陈延东 SHAN Chunming;YANG Chunsheng;YANG Jianming;CHEN Yandong(School of Architectural Engineering,Yancheng Kindergarten Teachers College,Yancheng Jiangsu 224005 China;Yancheng City Big Data Group Co.,Ltd,Yancheng Jiangsu 224005 China;School of Civil Engineering,Yancheng Institute of Technology,Yancheng Jiangsu 224051 China;Jiangsu Lanfeng Environmental Protection Technology Co.,Ltd,Yancheng Jiangsu 224050 China)

机构地区：[1]盐城幼儿师范高等专科学校建筑工程学院,江苏盐城224005 [2]盐城市大数据集团,江苏盐城224005 [3]盐城工学院土木工程学院,江苏盐城224051 [4]江苏兰丰环保科技有限公司,江苏盐城224050

出　　处：《江苏建筑》2024年第2期132-137,共6页Jiangsu Construction

基　　金：江苏省第六期“333高层次人才培养工程”第三层次资助项目(2022-3-9-028);2022年第一批江苏省产学研合作项目(BY2022422);2022年度江苏省高等学校自然科学研究面上项目(22KJD560008)。

摘　　要：为了增强磷酸钾镁水泥(MKPC)涂料的耐腐蚀性,添加氧化镁质量5%、10%、15%、20%四种不同硅灰掺量进行改性,通过维氏硬度、抗折抗压强度、粘结强度等物理化学表征参数,进行电化学方法和中期盐雾试验,测试该涂层在常温固化下的耐腐蚀能力。结果表明,添加氧化镁质量20%硅灰后,磷酸钾镁水泥基钢结构防腐涂料的耐腐蚀能力最佳,比空白组高480%。该防腐涂料涂覆在Q235钢表面,在3.5%氯化钠溶液环境下浸泡28 d后,经过1440 h中性盐雾腐蚀试验,Q235钢涂层表面未出现任何的锈蚀现象。In order to enhance the corrosion resistance of potassium magnesium phosphate cement(MKPC)coatings were modified by adding four different silica fume contents of 5%,10%,15%and 20%magnesium oxide.The physical and chemical characterization parameters such as Vickers hardness,flexural compressive strength and bond strength were tested,and the electrochemical impedance spectrum and mid-term salt spray test coating corrosion resistance under the condition of room temperature curing ability.The results show that the corrosion resistance of potassium magnesium phosphate cement-based steel structure anticorrosive coating is the best after adding 20%silica fume,which is 480%higher than that of the blank group.The anti-corrosion coating was coated on the surface of Q235 steel.After 28 days of immersion in 3.5%sodium chloride solution,after 1440h neutral salt spray corrosion test,there was no corrosion on the surface of Q235 steel coating.

关 键 词：磷酸钾镁水泥 硅灰 掺量 防腐性能 

分 类 号：TU593[建筑科学—建筑技术科学]