| 摘要 |
The invention relates to a process for preparing a coating on at least part of a tribological surface of a mechanical component which is derived from a non-elastomeric material, which process comprises the steps of: (a) applying an aqueous polymer dispersion onto at least part of the tribological surface to form a coating, which aqueous polymer dispersion comprises an isocyanate that contains two or more isocyanate groups per molecule and an isocyanate-reactive polyol to form polyurethanes; and (b) subjecting at least part of the coating as obtained in step (a) to a curing treatment during which polyurethanes are formed in the coating on the at least part of the tribological surface of the mechanical component. In addition, the invention relates to (i) a mechanical component (e.g. a steel rolling element bearing) obtainable by the present process, and (ii) the use of a protective coatings as prepared in the present process for reducing friction between the mechanical component and a further mechanical component that is in dynamic contact with the mechanical component. |
