Tribological Properties of the Epoxy Composites Filled with Dispersed Particles and Thermoplastics
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TRIBOLOGICAL PROPERTIES OF THE EPOXY COMPOSITES FILLED WITH DISPERSED PARTICLES AND THERMOPLASTICS А. V. Buketov,1 М. V. Brailo,1, 2 О. S. Kobel’nyk,3 and О. V. Akimov1
UDC 667.64:678.026
It is shown that a material filled with АG-1500 antifriction graphite particles (range of particle sizes 63–80 µm), pearlite particles (range of particle sizes 5–10 µm), and PА-6 polyamide granules in the ratio 60 : 20 : 30 has the highest tribological properties. For a sliding speed v = 1.0 m/sec, this composite has the following characteristics: friction moment M = 1.0–1.2 N ⋅ m, friction coefficient f = 0.20–0.22, temperature T = 340–341°K, wear rate I m = 0.4–0.5 mg/km, and the running-in distance l = 2500–3000 m. Keywords: friction, tribological properties, epoxy composite.
The operation of technical facilities permanently leads to the wear of components and units and to the damage of working surfaces. An important task of the contemporary industry is to use components made of structural materials [1] with elevated service life and the ability to withstand alternating loads. Within the broad range of the available structural materials, composites based on epoxy polymers prove to be of great importance. As the main criteria of durability of equipment, one can use the wear resistance of materials and their serviceability under the critical conditions. This is why it is reasonable to develop new materials with improved not only physicomechanical but also tribological properties [2, 3]. The materials with improved tribological properties were developed and the technological processes of their formation were optimized by Pokhmurs’kyi [4, 5], Bogdanovich [6], Stukhlyak [7], Kindrachuk [8], and Lyashenko [9]. A significant contribution to the development of tribology was made by Kragel’skii [3], Kostetskii [10], Garkunov [11], and Belyi [12]. An important role was played by the work by Buzkov [13] devoted to the improvement of the tribological properties of composite materials (CM) of the deadwood complexes of ships. At the same time, the development of materials with low manufacturing cost and high tribological and physicomechanical characteristics is always a priority and urgent problem [3–13]. The aim of the present work is to investigate the tribological properties of materials filled with PA-6 polyamide thermoplastic granules and develop composites with elevated wear resistance for the components and mechanisms operating in friction units, including the deadwood complexes of ships. Materials and Methods of Investigation To investigate the tribological properties, we used a preliminarily developed matrix [14] based on the CHSEpoxy-525 epoxy resin ( q = 100 m.p.) and PEPA + Telalit 410 hardeners ( q1 + q2 = 5 + 5 m.p.). This matrix 1 2 3
Kherson State Marine Academy, Kherson, Ukraine.
Corresponding author; e-mail: [email protected].
College of the Pulyui Ternopil’ National Technical University, Ternopil’, Ukraine.
Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 52, No. 1, pp. 28–35, January–February, 2016. Orig
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