人工加速老化对聚脲涂料防护性能的影响  

Influence of artificial accelerated aging on the protective performance of polyurea coatings

作　　者：李全德[1] 孟惠民[1] 

机构地区：[1]北京科技大学腐蚀与防护中心表面科学与技术研究所,北京100083

出　　处：《北京科技大学学报》2011年第1期71-75,共5页Journal of University of Science and Technology Beijing

基　　金：国家科技支撑计划资助项目(No.2007BAB27B02)

摘　　要：针对聚脲涂料防腐涂层进行紫外加速老化实验,采用光泽度计、扫描电子显微镜(SEM)以及傅里叶变换红外光谱仪(FTIR)分析并结合电化学阻抗谱(EIS)图谱,研究涂层的老化行为.结果表明:涂层的老化分为前期、中期和后期三阶段,涂层表面在老化中期变色较大.涂层的表面、断面SEM及EIS测试显示涂层中的微气泡阻止了涂层的老化裂纹向基体发展,涂层仍保持较好的防护性能.UV accelerated aging was performed on polyurea anti-corrosion coatings. The aging behavior of the coatings was analyzed by gloss meter, scanning electron microscope （SEM） and Fourier transform infrared spectroscopy （FTIR） in combination with electrochemical impedance spectroscopy （EIS）. Experiment results indicate that the coating accelerated aging is divided into early, middle and late stages. The color of the coating surface changes severely in the middle stage. SEM images of the coating surface and cross section show that the development of aging cracks to the substrate is terminated by tiny bubbles, and the anticorrosion performance of the coatings declines very slightly.

关 键 词：涂料 聚脲 紫外老化 腐蚀防护 

分 类 号：TG174.46[金属学及工艺—金属表面处理]