New materials of water lubricated bearing was prepared by polyethylene with different concentration of the guaiacum resin,and their friction and wear performances were investigated on the CBZ1 friction and wear test machine under the simulated marine environment.The friction coefficient,wear mass loss and the surface morphology of the materials with different concentration of guaiacum resin were analyzed.The results show that the selflubricating properties of the materials are perfectly improved by adding some guaiacum into polyethylene.With the increasing of the content of guaiacum resin,the friction coefficient and wear rate of the materials are first decreased and then increased,for the guaiacum resin can produce a certain amount of grease due to thermal softening during the friction process,which contributes to the formation of water film in the surface of friction pair and improves the friction and wear properties of the materials.The addition of appropriate guaiacum resin can effectively reduce the surface roughness of the materials and improve the surface performance of friction pair,thereby improving the working stability of the materials.