Solid lubrication can effectively reduce the friction coefficient and wear rate

and greatly prolong the service life of the substrate

so it has become one of the key technologies applied to the mechanical friction pairs of the moving parts at low speed

heavy load

and high or low temperature. Wherein

polymer solid lubrication techniques can be employed to substitute or coordinate fluid lubrication

where polymer powders

thin films

or composites are utilized to form low-friction lubricating coatings

leading to the avoidance of metal-to-metal contacts

reducing friction and wear. Four types of polymer solid lubricating materials (PSLMs)

including bonded solid lubricating coating (BSLCs)

solid stick lubricants (SSLs)

solid lubricating pastes (SLPs) and self-lubricating composites (SLCs)

are surveyed and systematized in this paper. The research status of waterborne bonded solid lubricating coatings with waterborne epoxy (WEP)

waterborne polyurethane (WPU)

and waterborne polyamide-imide (WPAI) as binder is emphatically discussed. Finally

the future development trend of solid lubricating materials was prospected

considering the current research and development status of solid lubricating materials and the shortcomings of solid lubrication technology applications in industrial fields.