防护性有机涂层失效研究的发展趋势

结合目前国内外防护性有机涂层失效研究现状,总结了该领域在环境因素的协同作用,力学因素对涂层耐久性的影响,综合评价涂层防护性能的表征方法和预测涂层失效的数学模型等方面的若干新进展。扼要叙述了该领域当前的主要研究需求,提出了针对未来研究工作的若干建议,包括应更重视环境因素之间的相互作用,通过叠加不同环境因素的加速模拟试验研究环境因素在涂层失效中的协同效应。研究不同形式、不同大小的载荷对涂层失效机理的影响,研究力学因素、老化因素和腐蚀过程在涂层失效中的交互作用。利用涂层防护性能物理、化学参数的测量结果建立预测涂层防护性能下降的数学模型,以实现涂层性能评价和涂层寿命预测。

Development Trend of the Research on Failure Analysis of Protective Organic Coatings

Recent studies on failure of protective organic coatings are reviewed in this paper. Some progress of the research field in the following aspects are summarized: co-operation of environmental factors, effect of mechanical fac-tors on durability of organic coatings, evaluation of the coating's protective properties and mathematical model of the failure process, etc. Main research needs of the current field were described briefly. Suggestions for future research works were put forward here, including emphasizing study on the interaction of environmental factors, and co-effect of envi-ronment factors in the failure of coatings via multi-factors accelerated simulated testing. Influences of mechanical load in various modes and magnitude on the failure mechanism of coatings, as well as the interaction of mechanical factors, age-ing factors and corrosion process during the degradation of coatings were researched. Mathematical models for the de-gradation of protective properties were established based on the measurement of physical and chemical parameters in the aim of evaluating coating properties and predicting the service life of coating.