Rapid evaluation of anti-fouling coating materials for Limnopernafortunei

YAO Guoyou; XU Mengzhen; AN Xuehui; WANG Zhaoyin

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Journal of Tsinghua University(Science and Technology) ›› 2015, Vol. 55 ›› Issue (9) : 957-963.

HYDRAULIC ENGINEERING

Rapid evaluation of anti-fouling coating materials for Limnopernafortunei

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Abstract

Anti-fouling coatings are an efficient control method for the control of golden mussels. Rapid evaluation methods are needed to evaluate the effectiveness of anti-fouling coatings for screening. Forced attachment experiments were used to study the effectiveness of 17 types of commercially available coatings including polyurea, silane, and epoxy resins. The number of attached byssus, the attachment strength, and the contact angle on the materials were indicated by rapid evaluation indices for the coatings effectiveness. The results show that the average number of the attached byssus and the average attachment strength were negatively related to the contact angle on the materials, positively related to the dispersion force component of the surface free energy (Fowkes method), negatively related to the solid-liquid interfacial energy (ZDY method), and positively related to the solid surface free energy (ZDY method) of the coatings. Therefore, the contact angle, the dispersion force component of the surface free energy, the solid-liquid interfacial energy and the solid surface free energy were selected as the rapid evaluation indices for evaluating the effectiveness of the anti-fouling coatings. The indices provide scientific guidance for selecting anti-fouling coatings in large water transfer projects, such as the South-to-North Water Diversion Project.

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anti-fouling coatings / golden mussels / bio-fouling attachment / contact angle / surface free energy

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YAO Guoyou, XU Mengzhen, AN Xuehui, WANG Zhaoyin. Rapid evaluation of anti-fouling coating materials for Limnopernafortunei[J]. Journal of Tsinghua University(Science and Technology). 2015, 55(9): 957-963

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