ANALYSIS OF TRIBOLOGICAL PROPERTIES OF SELECTED PTFE-BASED POLYMER COMPOSITES IN A SLIDING INTERACTION WITH ALUMINIUM OXIDE (Al2O3)

Skoneczny, W.; Kaptacz, Sławomir; Barylski, Adrian; Kmita, T.

doi:10.5604/01.3001.0012.7550

Cited by 5 publications

(3 citation statements)

References 13 publications

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“…Reinforcements such as glass fiber, carbon fiber and aramid fiber and filling materials such as talc, calcite, kaolin, glass ball, wollastonite are generally used to increase mechanical properties. Solid lubricants such as carbon, Teflon, graphite, molybdenum disulfide and wax are added to the matrix especially to improve their tribological properties [7]. At low sliding speeds, the service life of polyamide 6 is 2 times to 10 times longer than metal‐based materials.…”

Section: Introductionmentioning

confidence: 99%

Improving the specific wear rate and coefficient of friction of polyamide 6 polymer and its composite by adding wax under self‐operation conditions

Unal,

Yetgin,

Kastan

et al. 2023

Materialwissenschaft Werkst

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Polyamide polymers are widely used in tribological areas in a wide range of industries. The purpose of this study is to extend the tribological life of this material. For this purpose, composite materials were produced by adding solid lubricants such as graphite and wax to the polyamide 6 (PA6) matrix at different rates, and the synergistic effect of these composites on tribological behavior was investigated. Tribological experiments were carried out under dry sliding conditions and on themselves. The polyamide 6/graphite/wax composites were first produced in the form of granules in a twin‐screw extruder, and then test samples were molded using the injection molding technique. Wear tests were performed using a pin‐on‐disc wear device. Tribological tests were carried out at a sliding speed of 0.5 m s−1 and under loads ranging from 10 N to 250 N. Following the experiments, the friction coefficient, specific wear rate, and surface wear were determined under the condition of the materials working on each other. The results showed that the lowest specific wear rate and friction coefficient were obtained for the polyamide 6 composites containing 6 % wax and 15 % glass fiber working on each other.

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Section: Introductionmentioning

confidence: 99%

Improving the specific wear rate and coefficient of friction of polyamide 6 polymer and its composite by adding wax under self‐operation conditions

Unal,

Yetgin,

Kastan

et al. 2023

Materialwissenschaft Werkst

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show abstract

“…When a transfer film is formed, the polymer part is rubbing against the polymer film on the metal counterpart and not against the metal itself [31,32]. The analysis of the basic tribological properties of selected polymer composites with an Al 2 O 3 ball and Al 2 O 3 oxide layers on aluminum alloy was described by [33,34]. In the literature and in industrial practice, data can be found on the modification of polymeric materials by lubricants [35,36].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Selected Polymer Composite-Aluminum Oxide Coating Tribological Systems

2020

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The tribotesting of friction systems requires discussion on proper selection of its conditions and data presentation. System tribology is based, for example, on analysis of the friction contact, the roughness of the cooperating surfaces, and the wear rate of the rubbing elements or coefficient of friction in relation to the sliding distance. Friction pairs, consisting of an aluminum alloy sample with an oxide layer (Al2O3) with and without the addition of inorganic fullerenes like tungsten disulphide (IF-WS2) nanoparticles on its surface cooperating with a counter-sample made of polymer composites prepared on the basis of phenol-formaldehyde resin with different fillers, were tested using a device with a pin-on-plate friction pair system. The results of the experiments showed sufficient durability of the Al2O3 and Al2O3/IF-WS2 oxide coatings in combination with the polymer composite. It was found that resin fillers such as cotton fibers, jute fibers, molybdenum disulphide (MoS2) or graphite (C) influence the friction behavior of the tribological pairs. Although the values of the coefficient of friction obtained in the tests were quite high, their course during the tests ensured stable cooperation of the aluminum coating/polymer composite friction pair on a 15 km distance, under a load of 0.5 MPa. The lowest coefficients of friction were obtained for oxide layers formed on aluminum combined with a polymer composite filled with cotton fibers and graphite. These studies provide information on the tribological properties of commercially available polymer composites cooperating with the produced oxide coatings, supplementing the available literature with the results of research on new, so far unexplored tribological partners. Microscopic investigation of the structure and morphology of the formed surface oxide layers and also microgeometry studies of both the friction elements were used to better understand the obtained research results.

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“…They showed that the best mechanical properties were found in a PTFE composite with a 40% bronze content. On the other hand, the tribological tests showed that the lowest wear was observed for the polytetrafluoroethylene-based composite containing 25% bronze powder and 15% graphite and for the composite with a 25% carbon content [27]. Song at al.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Comparative Assessment of Basic Tribological Properties of Selected Polymer Composites

et al. 2019

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Phenomena occurring in the contact area between two mating bodies are characterised by high complexity and variability. Comparisons are usually made between parameters such as the coefficient of friction, friction force, wear and temperature in relation to time and friction path. Their correct measurement enables the proper evaluation of tribological properties of materials used in the friction pair. This paper concerns the measurements of basic tribological parameters in the friction of selected polymer composites. Knowing the tribological properties of these composite materials, it will be possible to create proper operating conditions for kinematic friction pairs. This study investigated the coefficients of friction, friction force and temperatures of six polymer composites: cast polyamide PA6 G with oil, PA6 G with MoS2, polyoxymethylene POM with aluminium, polyethylene terephthalate PET with polytetrafluoroethylene PTFE, PTFE with bronze, and PTFE with graphite. The friction surface was also examined using an optical system and computer software for 3D measurements. As a result, PA6-G with oil was found to be the best choice as a composite material for thin sliding coatings.

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ANALYSIS OF TRIBOLOGICAL PROPERTIES OF SELECTED PTFE-BASED POLYMER COMPOSITES IN A SLIDING INTERACTION WITH ALUMINIUM OXIDE (Al2O3)

Cited by 5 publications

References 13 publications

Improving the specific wear rate and coefficient of friction of polyamide 6 polymer and its composite by adding wax under self‐operation conditions

Improving the specific wear rate and coefficient of friction of polyamide 6 polymer and its composite by adding wax under self‐operation conditions

Investigation of Selected Polymer Composite-Aluminum Oxide Coating Tribological Systems

Analysis and Comparative Assessment of Basic Tribological Properties of Selected Polymer Composites

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