In February 2026, a research team from the Technical University of Denmark systematically optimized the classic pull-off method to address the industrial pain point of adhesion testing for silicone-based marine fouling release coatings (FRC), successfully achieving accurate quantitative measurement of the adhesion of multi-layer FRC. As a new generation of environmentally friendly antifouling solution, silicone FRC has low surface energy, but its non-stick property makes traditional testing methods such as cross-cut method inapplicable.
    The team optimized the test by selecting ethyl cyanoacrylate glue with primer solution, standardizing the operation process, pulling at a low speed and analyzing failure modes with digital image technology, reducing the measurement standard deviation from 25% to 4%-8%. The adhesion of commercial three-layer coatings was measured to be stably at 1.40-1.70MPa. The study also found that overcoating intervals beyond specifications change the weak points of coatings, and seawater immersion significantly affects coating adhesion and failure modes. This method provides objective data support for coating R&D and quality control.

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