Why Do Rubber Belts Use Core Rubber, But Not More Layers Of Glue?

- Aug 11, 2018 -

The glue is a gel having a certain viscosity formed by dissolving the core glue in a solvent. After the solvent is completely volatilized, the composition is exactly the same as that of the core rubber. However, the commonly used glue is prepared by using a core rubber and a solvent (such as toluene, xylene, solvent gasoline, etc.) in a ratio of 1:5-1:6. .

The core rubber is a film which is calendered by a calender, and its molecular arrangement order is oriented, and it is anisotropic from a mechanical point of view, so the tensile properties and fatigue resistance along the rolling direction are better.

The arrangement of the rubber molecules in the solvent is random and isotropic. The role of the glue is to make the rubber dissolved in the solvent fully enter the cloth by the good fluidity and permeability of the solvent, so that the rubber can be better combined with the fabric.

Therefore, the function of the core glue is to bond the layers of the conveyor belt together, and at the same time eliminate the difference in stress and deformation between the conveyor belt layers due to different thicknesses, and absorb some of the destructive energy, so the core rubber is in the conveyor belt. It is an indispensable part. In order to prolong the service life, some foreign manufacturers often use the method of thickening the thickness of the core glue. Only the glue is used instead of the core glue, so the thickness of the glue between the layers of the joint is relatively thin, and the effect of the use will also be affected.