Many polymers and polymer composites are used in applications where wear and friction are important issues. Epoxy resin is also one of the most practical polymers used in the industry. Improving the wear and friction of this thermoset resin can further expand the range of application of this resin. In the meantime, self-lubricant composite materials have attracted more attention in the industry and in the field of tribology for economic and environmental reasons. These materials have eliminated the need for external lubrication such as oil. As a result, where long life, high wear resistance and low friction are considered, these types of composites are used.The present study examines the role of adding modified zeolite porous particles on the tribological behavior of epoxy resin. Five types of samples were made from pure resin, composite containing oil-free zeolite particles in weight percentages of 5 and 10, and composite containing oil-containing zeolite particles in weight percentages of 5 and 10%. To make the samples, a silicone mold was used, and equipment such as a magnetic stirrer and an ultrasonic bath were used to uniformly disperse the nanostructured fillers in the epoxy matrix. In order to eva‎luate the wear and friction properties of manufactured composites, a pin-on-disk tribometer was used under dry sliding conditions and ambient temperature.In this test, composite samples were used in the form of discs and steel pins were used as hard objects. In the wear test, two forces of 15 and 30 newtons, two speeds of 0.1 and 0.2 m/s and a distance of 500 meters were chosen as test design parameters in order to compare the behavior of the samples. To ensure the accuracy and reproducibility of the results, each test was repeated three times. According to the results, adding modified zeolite particles without absorbent oil with these two weight percents to the resin alone does not have a special effect on the friction coefficient of epoxy. It also increases the wear rate. But on the other hand, the presence of oil-filled particles in the resin caused a significant reduction in the friction coefficient and a great reduction in the wear rate of the composite compared to neat epoxy in all wear test conditions.Therefore, the use of particles containing liquid lubricant has a high practical value in improving the tribological properties of resin materials. For example, the average coefficient of friction at a force of 15 Newtons and a speed of 0.1 m/s for pure epoxy, a composite containing 5% by weight of oil-free particles, a composite containing 10% by weight of oil-free particles, a composite containing 5% by weight of oil-containing particles and a composite containing 10 The weight percentage of particles containing oil was 0.32, 0.33, 0.28, 0.13 and 0.12, respectively. Adding oil-carrying particles to the resin for different conditions reduces the coefficient of friction between 60 and 70% compared to neat epoxy. Also, the wear rate in samples containing oil particles decreased between 25 and 45 times compared to neat epoxy.

رضا جعفري ندوشن , صالح اكبرزاده

عليرضا علافچيان

محمد مشايخي , محسن اصفهانيان