纳米硅酸锂杂化聚合物在石化混凝土修复中的应用  

Application of nano-lithium silicate hybrid polymer in petrochemical concrete repair

作　　者：秦峰 吴士云 高原 姚增祥 张猛 李晓炜 QIN Feng;WU Shiyun;GAO Yuan;YAO Zengxiang;ZHANG Meng;LI Xiaowei(SINOPEC Shanghai Petrochemical Co.,Ltd.,Shanghai 200540,China;Shanghai QXQC New Material Technology Co.,Ltd.,Shanghai 200540,China;SINOPEC Engineering Group Luoyang R&D Center of Technology,Luoyang 471003,China)

机构地区：[1]中国石化上海石油化工股份有限公司,上海200540 [2]上海奇想青晨新材料科技股份有限公司,上海200540 [3]中石化炼化工程集团洛阳技术研发中心,河南洛阳471003

出　　处：《石油化工腐蚀与防护》2024年第3期39-44,共6页Corrosion & Protection In Petrochemical Industry

基　　金：中国石化集团科技开发项目“纳米硅酸锂杂化聚合物的关键技术及在混凝土修复防碳化的工程应用”(321130)。

摘　　要：混凝土是石化企业设备中最常用、最经济的建筑结构材料,然而随着服役年限的增加,带来了安全风险并影响企业外观形象,高质量保护层是提高钢筋混凝土耐久性的重要措施。基于聚合物纳米超支化关键技术,制备了混凝土防碳化材料,设计形成“纳米带锈转锈底漆/反应型渗透封闭底漆+防碳化中间填充层+防碳化耐候面漆”体系方案及配套的施工技术,在石化企业沉淀池外壁的应用结果表明,混凝土修复层表面平整美观、无明显外观缺陷,干膜厚度满足设计要求,修复层抗压强度≥35 MPa,附着力≥1.5 MPa,未发生碳化现象。此外,纳米硅酸锂杂化聚合物防碳化体系为水性体系,减少了VOC排放,环保效果明显,具有良好的社会效益。Concrete is the most commonly used and economical building structural material in petrochemical equipment.However,more safety problems are being faced along with the increasing service life.High quality protective layer is an important measure to improve durability of reinforced concrete.Based on key technology of hyperbranched polymer,concrete anti-carbonization material was prepared,and a set of system scheme and supporting construction technology of“nano rust-to-rust primer/reactive penetration sealing primer+anti-carbonization middle filling layer+anti-carbonization weathering resistance topcoat”was designed.The experimental results on outer wall of sedimentation tanks in petrochemical enterprise showed that the surface of concrete repair layer is flat with no obvious defects,dry film thickness is capable of achieving design requirement,compressive strength of repair layer≥35 MPa,adhesion≥1.5 MPa,no carbonization phenomenon occurs.In addition,nano-lithium silicate hybrid polymer anti-carbonization system is water-based system that reduces VOC emissions,brings significant environmental protection effects and achieves good social benefits.

关 键 词：混凝土修复 超支化聚合物 防碳化涂层 耐候性 

分 类 号：TU528[建筑科学—建筑技术科学]