多组份硅橡胶基末端膨大二级结构粘附性能研究

本文在前期工作基础上，在仿生刚毛一级结构末端固化1层粘附层，制备出末端膨大二级结构，用UMT测试其粘附性能。结果表明：正向滑移单根阵列支杆产生的切向力为5.3 mN，5倍于一级结构的刚毛；末端膨大结构的粘附层因材料组份的不同，其粘附阵列产生的切向粘附力明显不同；倾斜的末端膨大二级结构具有各向异性的粘附特性，正向滑移产生的切向力是逆向滑移的切向力的3.5倍。

Adhesion Performance of the Multi-components Silicone-based Secondary Structure Cohesive Arrays with Large End

Base on the early researches, we vulcanized a viscous membrane on the end of the primary array by spin-coating, thus obtaining secondary structure cohesive arrays with large end. The results of adhesion performance show that, during the forward sliding course, the shear force of a single seta was about 5.3 mN, which was around 5.0 times of that from the naked seta; the shear force significantly changed with the varying component materials. The lean setae with large end had anisotropy adhesion property, and during the forward sliding course the shear adhesion force was 3.5 times greater than that during the backward slipping course.