PEELING OF A FLEXIBLE STRIP ATTACHED BY A VISCOUS ADHESIVE
PEELING OF A FLEXIBLE STRIP ATTACHED BY A VISCOUS ADHESIVE
复制标题
DOI：
10.1017/s0022112066001058
复制
发表时间：
1966-01-01
影响因子：
3.7
通讯作者：
TAYLOR, GI
中科院分区：
文献类型：
--
作者：
MCEWAN, AD;TAYLOR, GI
讨论了将柔性条从刚性表面剥离的问题，该表面附着一薄层粘合剂，将粘合剂视为牛顿粘性流体。这使得在分离发生点之前检查流动和应力分布成为可能。在这一点上的条件被认为与在其他情况下观察到的条件相同，在这些情况下，一股粘性流体分成两股。特别预测了分离半月板处的表面张力对剥离速度的影响。实验描述了将一块4μm厚的“Melanex”薄片铺在覆盖一块平板玻璃的液体薄片上。该装置的设计是为了确保以恒定的角度剥离，并测量分离半月板的速度以及薄片上的负载。根据理论对实验结果进行了分析，并证明实验结果与理论一致。一个有趣的特征是，在低剥离速度下，在分离线之前的粘合层厚度会大大减少。虽然层的初始厚度决定了该线前面的带钢所采用的形状的尺度，但它对外部变量之间的关系没有影响。值得注意的是，当粘合剂层在分离前保持完整时，市售胶带在缓慢剥离中的物理外观可以类似于简单的粘性粘合剂。
The peeling of a flexible strip from a rigid surface to which it is attached by a thin layer of adhesive is discussed, treating the adhesive as a Newtonian viscous fluid. This makes it possible to examine the flow and stress distributions ahead of the point where separation occurs. The conditions at this point are taken to be the same as those observed in other cases where a stream of viscous fluid separates into two. In particular, the effect of surface tension at the separating meniscus on the speed of peeling is predicted.Experiments are described in which a sheet of ‘Melanex’ 4μm thick was laid on a sheet of fluid covering a piece of plate glass. The apparatus was designed to ensure that this was peeled off at a constant angle, and the speed of the separation meniscus, as well as the load on the sheet, was measured. The experimental results are analysed in the light of the theory and shown to be consistent with it.An interesting feature is the prediction that at low peeling speeds there is a great reduction in the thickness of the adhesive layer immediately ahead of the line of separation. Although the initial thickness of the layer dictates the scale of the shape adopted by the strip ahead of this line, it exerts no effect upon the relation between the external variables.It is noted that, when the adhesive layer remains intact ahead of separation, the physical appearance of commercially available tapes in slow peeling can resemble that of simple viscous adhesives.