Abstract The friction behavior of rubber is sensitive to real contact formation, especially on flat floors, and it can be determined by the wetting distribution (uniform or non-uniform). Here, we investigated the friction behavior and contact condition between a rubber hemisphere and a glass plate under non-uniform wetting conditions with water droplets in air and air bubbles in water. The experimental results indicated that the friction coefficient and real contact area for non-uniform wetting conditions were higher than for uniform wetting conditions without water droplets and air bubbles. Considering non-uniform wetting, a dewetting theory was developed that explains promotion of real contact formation.

中文翻译：

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硅橡胶半球在非均匀润湿状态下的摩擦行为：空气中有水滴或水中有气泡

摘要 橡胶的摩擦行为对实际接触形成很敏感，尤其是在平坦的地板上，它可以由润湿分布（均匀或不均匀）决定。在这里，我们研究了橡胶半球和玻璃板在空气中的水滴和水中的气泡的非均匀润湿条件下的摩擦行为和接触条件。实验结果表明，非均匀润湿条件下的摩擦系数和实际接触面积高于没有水滴和气泡的均匀润湿条件。考虑到非均匀润湿，开发了一种去润湿理论来解释促进真正接触形成。