柔性环氧沥青防腐涂料的制备及性能研究  

Preparation and performance study of flexible epoxy asphalt anti-corrosion coatings

作　　者：宋逾君 SONG Yujun(Beijing Oriental Yuhong Waterproof Technology Company,Beijing 101309,China)

机构地区：[1]北京东方雨虹防水技术股份有限公司,北京101309

出　　处：《新型建筑材料》2024年第1期59-64,共6页New Building Materials

基　　金：国家重点研发计划项目(2022YFC3800903)。

摘　　要：混凝土防护工程表面涂层需要兼顾防水和防腐性能,且可以抵抗基层裂纹,市场上常见的柔性环氧防腐涂料主要适用于金属基材,具有一定柔性但没有延伸性,涂层易发生片状脱落。通过将乳化沥青、聚合物乳液和改性聚醚胺复配,制得高性价比且具有延伸性的柔性环氧防腐涂料。试验结果表明:当m(乳化沥青)∶m(聚合物乳液)∶m(改性聚醚胺)=48.2∶15∶10时,制备的防腐涂料25℃断裂伸长率达56.5%,低温柔性达-5℃;不透水性、耐腐蚀性和电化学阻抗测试结果表明,该涂料具有良好的耐水性和耐腐蚀性。The concrete protective engineering requires surface coatings offering both waterproof and anti-corrosive properties,while also being able to resist cracking in the base layer.Commonly available flexible epoxy anti-corrosion coatings on the market are primarily suitable for metal substrates and possess a certain level of flexibility but lack extensibility,which can lead to coating flaking.This study achieved a cost-effective,extensible flexible epoxy anti-corrosion coating by combining emulsified asphalt,polymer emulsion,and modified polyether amine.When m(emulsified asphalt)∶m(polymer emulsion)∶m(modified polyether amine)=48.2∶15∶10,the coating achieves a fracture elongation of 56.5%at 25℃,the coating exhibits a fracture elongation of 56.5%at 25℃and maintains flexibility down to-5℃.Impermeability,corrosion resistance,and electrochemical impedance test results demonstrate that this coating simultaneously possesses excellent water resistance and corrosion resistance.

关 键 词：防腐涂料 混凝土防护 环氧树脂 沥青 柔性 腐蚀 

分 类 号：TU56[建筑科学—建筑技术科学]