Совместимость уреатных пластичных смазок с другими типами смазок

In this work, a methodology for assessing the compatibility of various types of plastic lubricants is presented and tested. This methodology includes thermal treatment of mechanical mixtures of lubricants (80°C for 24 h) followed by the determination of the physicochemical properties of the resulting compositions. This method has been used to establish the feasibility of the joint use of urea (urea-based) lubricants with lithium, calcium, lithium-calcium, aluminum, and bentonite lubricants. It has been shown that the most important factor for compatibility is the nature of the base oils: mixing lubricants based on synthetic and mineral bases can lead to a significant decrease in the dropping point temperature (which creates a risk of leakage from friction nodes), changes in colloidal stability, and strength limits (which may require additional evaluation of thermal characteristics and structural-mechanical properties of mixtures). The tribological behavior of urea mixtures with other lubricants does not undergo significant changes. This approach provides a scientifically sound choice of compatible lubricating materials and allows for minimizing risks in the maintenance of industrial equipment.