有机涂层防腐性能的研究与评价方法

METHODS FOR STUDY AND EVALUATION OF ANTICORROSION PERFORMANCE OF ORGANIC COATINGS

综述了当前国内外常用的有机涂层防腐性能研究与评价方法 ,包括常规检测方法、电化学方法、表面分析技术、光谱学方法等 ,阐述了各种方法的特点及应用范围 .不同的分析方法配合使用有助于全面、准确地评价有机涂层的耐蚀性能、研究涂层的防腐机理 .

Anticorrosion performance of organic coatings depends on their structure,chemical composition and electrochemical behavior,and the interaction between coatings and metal interface etc.,so the measuring method to character these performance is important element of coating science.Main measuring methods being widely used to study and evaluate the anticorrosion perfromance of organic coatings have been reviewed in this paper.Each method possesses different characteristics and application field:conventional analysis methods are simple and feasible,but the results from them are generally inaccurate,dispersive,and it is often difficult to gain the same results from different experiments;electrochemical method is convenient and can give us plenty information which is helpful to investigate the anticorrosion mechanism and to evaluate the anticorrosion performance of coatings quantificationally and semis-quantificationally,but special equipment is needed for electrochemical methods,and some of them is very expensive;the information about chemical composition and structure of coatings material can be obtained by optical spectroscopy and surface analysis technique respectively.Combination of various methods may help to evaluate the anticorrosion performance and investigate the relevant machansism of organic coatings.