前负荷在粗糙表面粘连中的作用。
Role of Preload in Adhesion of Rough Surfaces.
作者信息
Dorogin L, Tiwari A, Rotella C, Mangiagalli P, Persson B N J
机构信息
Leibniz Institute for Polymer Research Dresden, P.O. Box 120 411, D-01005 Dresden, Germany.
Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany.
出版信息
Phys Rev Lett. 2017 Jun 9;118(23):238001. doi: 10.1103/PhysRevLett.118.238001.
Adhesion between glass and bromobutyl and polydimethylsiloxane elastomers is investigated. We show that viscoelastic energy dissipation close to the opening (or closing) crack tip, and surface roughness, strongly affect the work of adhesion. We observe strong adhesion hysteresis and we show, in contrast to the Johnson-Kendall-Roberts theory prediction for elastic solids, that this results in a pull-off force, and effective work of adhesion to be dependent on the maximum loading force.
研究了玻璃与溴化丁基橡胶和聚二甲基硅氧烷弹性体之间的粘附力。我们表明，靠近开口（或闭合）裂纹尖端的粘弹性能量耗散以及表面粗糙度对粘附功有强烈影响。我们观察到强烈的粘附滞后现象，并且与弹性固体的约翰逊 - 肯德尔 - 罗伯茨理论预测相反，我们表明这会导致剥离力以及有效粘附功取决于最大加载力。
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