Thin adhesive layer
A thin adhesive layer can give a shrinkage, expand or swell in the same way as a thick, but internal stresses, developing in thin layers, are smaller than in thick. Therefore, the danger of adhesion disturbance when swelling or shrinkage with thick layers is greater than with thin. If your SUV needs new caterpillars, you can order them here: caterpillars for an SUV..
Plastic flow of glue. Glues with very low fluidity limits, but with high viscosity are suitable for gluing flexible, capable of deforming materials. The ability of plastic adhesives to deformations is very high. However, these adhesives are in no case suitable for obtaining hard adhesive compounds. Obviously, plastic adhesives do not allow to obtain compounds with high (or even medium) strength when rupture. They can resist shots and short -lived loads, but with prolonged loads, residual deformations occur in them over time.
Under the influence of constant cutting loads, a very slow sliding of the glued surfaces relative to each other begins. Under the influence of a constant stretching load attached at right angles to the adhesive layer, the connection is ultimately destroyed if the stretch load exceeds the fluidity limit. In addition, the fluidity limit of such constant plastic adhesives is a fictitious. With lower stresses that do not reach the limitation limit, a very slow, but continuous deformation is observed.
Plastic adhesives have a significant advantage over all other adhesives, with the exception of highly worn. This advantage is usually considered as the strength of adhesion, but this adhesion is only apparent, since the observed effect is not due to the energy of the section surface, but the rheological properties of these adhesives.
In most cases, the danger of the destruction of adhesive compounds is due to the action of tangential forces on the border between glue and the glued material. These forces, possibly, along with stretching efforts in the perpendicular direction, can exceed the strength of adhesion or, if destruction by adhesive ties does not occur, leading to a rupture on the adhesive layer.
