THE EFFECT OF THE CHEMICAL METAMERISM POLYOLEFIN ON THE FRICTION AND WEAR OF BRONZE POWDER FILLED HIGH DENSITY POLYETHYLENE

摘要

As previously reported, in order to improve the tribological characteristics of the polymer sliding members, the polyoxymethylene (POM), high density polyethylene (HDPEX and polytetrafluoroethylene (PTFE) were each blended with bronze powder, and their filler effects clarified As a result, a certain filler effect was achieved from all of those polymer matrices blended with bronze powder, and their wear rates were actually reduced to less than half of their respective unfilled polymers. On the other hand, however, the geometrical shape effect of the bronze powder with respect to wear rate could not be achieved as expected from blended HDPE and PTFE due to the poor adhesiveness between the matrices and the filler. In this paper, the HDPE filled with bronze powder was blended with the chemical metamerism polyolefin (CMP) an adhesive resin to examine the blending effect of the CMP on the tribological characteristics. As a result, the wear rate was reduced, and the geometrical shape effect of the filled bronze powder appeared The wear rate was further reduced as the shape index of bronze powder increased. When the bronze powder filled HDPE was blended with CMP at a blending ratio of 5wt%, its wear rate was lowest, and its velocity resistance was best The coefficient of friction of the HDPE and that of the bronze powder filled HDPE were both increased to some extent by blending them with the CMP.