Belt, in particular power transmission belt, with a coating with a polyisocyanurate-polyuric material as adhesive and method for its production

摘要

Belts (1), preferably power transmission belts from elastomeric material, comprise at least wear and tear dependent, motion-transmitting belt surface (7) exhibiting a coating (9) of a polymer material with low friction, and favorable sliding properties, where: the belting base material of the coating is a polyisocyanurate or polyurea, the isocyanate has at least two isocyanate groups as the base component, and a number of urea and diol or polyol groups are obtained by using less quantity of water. An independent claim is included for the preparation of the belt, comprising applying a solution or dispersion comprising a solvent or dispersion medium, the isocyanate, and optionally one or more additives to the motion-transmitting belt surface to be coated; simultaneously evaporating the solvent or dispersion medium, and reacting the isocyanate with an ambient humidity to a flexible deformable mass with individual urea groups; and vulcanizing the belt, after a drying time, where a reaction takes place at polyisocyanurate-polyurea, which forms the coating on the belt.