Finite element analysis of the water diffusion behaviour in pigmented epoxy coatings under alternating hydrostatic pressure

被引：18
作者：
Liu, Rui [1 ,2 ]
Liu, Li [1 ,3 ]
Meng, Fandi [3 ]
Tian, Wenliang [1 ]
Liu, Ying [1 ]
Li, Ying [1 ]
Wang, Fuhui [3 ]
机构：
[1] Chinese Acad Sci, Corros & Protect Div, Shenyang Natl Lab Mat Sci, Inst Met Res, Wencui Rd 62, Shenyang 110016, Liaoning, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230000, Anhui, Peoples R China
[3] Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat MoE, 3-11 Wenhua Rd, Shenyang 110819, Liaoning, Peoples R China
来源：
PROGRESS IN ORGANIC COATINGS | 2018年 / 123卷
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
Epoxy coatings; Water diffusion; Alternating hydrostatic pressure; Finite element analysis; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; FAILURE BEHAVIOR; POSITRON-ANNIHILATION; CORROSION BEHAVIOR; MOISTURE DIFFUSION; ORGANIC COATINGS; FREE-VOLUME; PART II; COMPOSITE; SORPTION;
D O I：
10.1016/j.porgcoat.2018.07.011
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The water diffusion behaviour in pigmented epoxy coatings under alternating hydrostatic pressure (AHP) has been calculated by the finite element method. The water diffusion in the coating under AHP follows the non-Fickian diffusion, which is caused by cracks and superposed by the occurrences of many independent Fickian diffusion processes. The cracks largely contribute to the water absorption of the coating. If the occurrence time of the cracks is measured by the experiment, the lifetime of the coating under AHP can be quickly determined.
引用
收藏
页码：168 / 175
页数：8
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