藤壶剪切强度试验及探讨

Research on Measurement of Barnacle Adhesion Strength in Shear

简便有效的测试评价方法可以缩短防污漆的开发周期,为其实际应用提供可靠依据。评价低表面能防污漆的测试方法主要有动态模拟试验、藤壶剪切强度试验、涂层降阻试验等。本文以ASTM D5618—1994(2011)为参照进行低表面能防污漆和自抛光防污漆的浅海浸泡对比试验,测算藤壶剪切强度,通过对比试验探讨其防污性能等;通过推演的公式可用于估算剥离藤壶的水流剪切相对速率及航速,完善试验方法,使其更具实际应用意义和参考价值。

Simple and effective test evaluation methods can shorten the development cycle of antifouling paints and provide reliable basis for its practical application. The main testing methods of evaluating low surface energy coatings include dynamic test method, measurement of barnacle adhesion strength in shear and coatings frictional resistance test, etc. Based on the test standard ASTM D5618--1994 （2011 ） as a reference, contrast tests for low surface energy coatings and self-polishing antifouling coatings immersed in sea have been carry out. Then the torte required to remove the barnacle is measm＇ed. The barnacle adhesion strength in shear is calculated, and the antiiouling performance is discussed. With the help of deductive tormulas, the minimum requirements of seawater relative velocity in shear and navigational speed to re- move the barnacle can be determined, and the test methods can be modified fof more practical and referential.