Natural Fiber Reinforcement Polymeric Composites (NFRPC) used in the recent days in wide range of industrial\napplications. For its good environmental properties and availability, natural fibers and natural additives used as\nreinforcing material for most of polymeric composites. In the present work, polyester composites filled by date seeds\npowder as a natural filling material were proposed as (NFRPC). Effect of different parameters on the tribological\nbehavior of the proposed composite is studied. The proposed variables are; applied normal load, sliding speed, sliding\ndistance and the percentage of filler contents. Pin on Disk tribometer was designed and constructed for the tribological\nmeasurements. Friction coefficient and rate of wear for the proposed composites have been obtained. The results\nshow that; the coefficient of friction for polyester composites filled with date seed powder decreases by 15% with\nincrease of filler under high contact pressure, beside the increase of velocity increases friction coefficient up to 10%.\nRate of wear decreases to 10E-5 gm-1 with increase of date seed filler up to 10% under low contact pressure and low\nsliding speed, but; unfortunately, continuous increases of date seed filler from 15% to 25% decrease the resistance\nof wear for proposed composites under high contact pressure and high sliding speed. There is a significant effect of\nthe applied load (contact pressure) and sliding velocity on the wear rate of polyester composite filled with date seed.
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