Tribological studies of plastic media

An original method for measuring the coefficient of friction of plastic materials is developed. The made tribometer allows to implement this technique. The influence of pressure, temperature and concentration of the plasticizer on the coefficients of internal and external friction plasticized paraffin metallic powders is investigated. It is found that with increasing compaction pressure coefficients of external and internal friction decrease. It is shown that with increasing concentrations of plasticizer difference in tribological properties between different powders decreases.