INFLUENCE OF COMPATIBILITY IN THE POLYARYLATE’S BLENDS ON FRICTION

Abstract

Progress in high-tech industry sectors, including aerospace, shipbuilding etc. combined with the implementation of additive manufacturing technologies, leads to more stringent requirements for the performance of composite materials, including thermoplastic-based ones. In order to improve the properties of these materials, addition of various polymeric modifiers, which have different levels of compatibility with the major thermoplastic component, is often required. Polyarylate DV manufactured by NPO “Polymersintez” was selected as major matrix component. It is synthesized via emulsion polycondensation of Bisphenol A and equimolar mixture of isophtalyl chloride and terephthalyl chloride. The compatibility level of modifier with the polyarylate matrix was the main criterion for the modifier selection. It was estimated by calculation from the values of surface tension, molar volume and solubility parameters. Five modifiers were selected: four with polyarylate structure and one is based on polyphenylene sulfide. The effect of compatibility of polyarylates based on polymeric mixtures on their thermomechanical and tribological properties was studied. It has been shown that the most sensitive to changes in the polymer mixtures components chemical structure were tribological characteristics. The presence of compatibility in polymer compositions of polyarylates promotes the improvement of thermo-friction indexes. The co-polymer formed in a mixture of DV-FV polyarylates with a completed process of intermolecular interaction has a stable friction character over a wide temperature range. The stabilization of tribological characteristics in polymer mixtures such as polyarylate-polyphenylene sulfide in the absence of compatibility occurs after additional high-temperature (250 °C) frictional treatment.Forcitation:Sorokin A.E., Krasnov A.P., Goroshkov M.V., Klabukova L.F., Zyuzina G.F. Influence of compatibility in the polyarylate’s blends on friction. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 10. P. 58-67