Synthesis reactions and physico-mechanical, thermal properties of new aromatic copolyethersulfone ketones were studied in relation to the chemical structure of activated dihaloarenes and diols in a simpler, more economical way. It is shown that by controlling the ratio of monomers and the order of their introduction into the copolycondensation reaction, it is possible to obtain aromatic copolyethersulfone ketones with increased temperature and physicomechanical characteristics.

Processes of dressing the surface of glass fiber and their effect on the properties of composite materials based on polyetherimide filled with glass fibers were evaluated. It was found that preliminary thermal treatment of glass fibers and their subsequent treatment with a dressing agent, copolyhydroxyether based on di(4-hydroxyphenyl)sulfone, 4,4′-dioxydiphenylpropane, and 3-chloro-1,2-epoxypropane, allow obtaining polyether—etherimide composite glass-filled materials exhibiting improved physical and mechanical properties.

The paper presents the results of investigations on fi nding out the possibility of synthesis of powdered aromatic polyetheretherketones and copolyetheretherketones, combining solubility in some organic solvents and crystallinity. It has been shown that, in certain intervals of monomer content, it is possible to obtain copolyetheretherketones that have some crystallinity and remain soluble in some organic solvents. A simplifi ed method for obtaining aromatic polyetherketones and copolyaryleneetherketones has been developed. The high values of thermal and mechanical characteristics enable to recommend the obtained polyetheretherketones and copolyetheretherketones for forming special-purpose products using 3D-technologies.

Studies on the improvement of the processes of synthesis of poly (arylene ether ether ketone) s and copoly (arylene ether ether ketone), which have found wide application as the basis of many engineering plastics, have important practical significance. In the present paper, some features of the synthesis of copoly (arylene ether ether ketone) by nucleophilic substitution reaction are considered, the dependencies of the reduced viscosity of copolyesters on the chemical structure of diols and the conditions of the copolycondensation processes are clarified.

The paper presents the results of studies on the activation of the surface of carbon and glass fibers by thermal and chemical treatment with acids and mixtures of acids. Carbon and glass fibers with an activated surface are of practical interest for the production of polymer composite materials with high thermal, physical and mechanical characteristics.

The influence of treated carbon nanofibers on the molecular weight and properties of polymer materials was studied. Polyhydroxy ether of bisphenol A was used as a polymer matrix. The in situ synthesis of nanocomposite enabled one to obtain polymer composites with high molecular weight and density, as well as to improve their hardness.

The paper gives a brief description of carbon and glass fibers used to obtain polymer composite materials with high thermal, physical and mechanical characteristics. Some methods for surface activation of carbon and fiberglass, which will be used to increase the adhesion interactions at the fiber-polymer boundaries, are presented.

The article presents the results of work on the dressing of various continuous carbon fibers of a different structure with compounds of oligomeric and polymeric nature. Using gravimetry, optical and scanning electron microscopy methods, it was shown that the fixation of sizing substances on the surface of carbon fibers depends on the brand of carbon fiber, the method of chemical activation and the nature of the sizing agent. It has been shown that the studied coupling agents exhibit increased adhesion to carbon fiber of the brand TGN-2.

Data are given on aromatic copolyether ether ketones obtained from aromatic diols, namely, hydroquinone and diphenylolpropane (Bisphenol A). The copolyethers were synthesized by high–temperature copolycondensation of the corresponding diols with 4,4'–difluorobenzophenol. The dependence of the rheological and thermochemical properties of the polymer samples on the mole ratio of the diphenols was studied for a broad range of monomer concentrations. Enhanced heat resistance along with decreased intrinsic viscosity and glassy point temperature were found for copolyether ether ketones with a greater content of hydroquinone.

The article descriptions the main methods of microcapsulation one of the most promising ways of acquiring enclosed in a shell of microscopic particles of solid, liquid or gaseous substances. The possibility of obtaining microencapsulated samples of powdered polyesters is considered.

This paper presents the results of researches on determination of possibility of obtaininga method of microcapsulation of powders polyetheretherketone and sopolyetherketones spherical shape, recommended for use in 3 D printing. Determined the concentration dependence of the diameters of the particles capsulated polyetheretherketone during the process in different environments. It is shown that the bulk density of capsulated samples is 8-10 times higher than non-capsulated ones.

The possibility of producing thermoplastic glues based on polyhydroxyether has been investigated. It has been shown that an in situ introduction of carbon nanofiber in the treated form in an optimal amount equal to 0.05 wt % during polymer synthesis results in the improvement of the strength, adhesion, and thermal characteristics of the produced composite.

Aromatic polyether ether ketones are polymers whose volume of production is now increasing at a rapid rate, which is due to the important array of service properties of these polymers. Certain processing characteristics of composites based on polyether ether ketones are considered in this paper.

Composites based on polyhydroxy ether and graphite of industrial grades MPG and GL were produced and investigated. Methods were developed for introducing graphite into the polymer matrix. It was shown that preliminary oxidative surface treatment of the graphite leads to the selective adsorption of monomers on its surface, which lowers the rate of the reaction in situ during the production of the composites. It was shown that the method for introducing the graphite and the amount of the latter have a considerable influence on the properties of the composite obtained.

Aromatic polyetheretherketones refer to those polymers whose production capacity is currently growing rapidly, due to a whole set of important performance properties of these polymers. This paper examines some of the technological characteristics of composites based on polyetheretherketones.

Из-за высоких значений теплофизических и физико-механических свойств полиариленэфиркетоны находят широкое применение в различных областях техники. В данной статье приведены физико-механические показатели и использование некоторых полиэфирэфиркетонов. Приведен сравнительный анализ полиэфирэфиркетонов, производимых в России и за рубежом. Показано, что полиэфирэфиркетоны фирмы «VictexR» проявляют высокую химическую стойкость к водным реагентам и к действию веществ с широким пределом рН, начиная от 60 % серной кислоты и 40 % щелочи. Полиэфирэфиркетоны растворяются только в протонирующих растворителях (например, концентрированная серная кислота) или при температуре, близкой к его температуре плавления. Из органических растворителей на ПЭЭК действует ?-хлорнафталин, температура кипения которого 260 °С, и бензофенон. Являясь представителем термопластичных материалов, ПЭЭК относится к числу изоляционных материалов. Эти полимеры являются огнестойкими, образуют мало дыма и токсичных веществ при горении.

Термостойкие полиэфиры, широко применяемые для получения конструкционных изделий, чаще всего перерабатываются методом высокотемпературной экструзии. При этом температура расплава близка к температуре деструкции таких полимеров, как полиэтилентерефталат, полисульфон и др. Снижение температуры переработки таких полимеров является задачей данного исследования. Для решения задачи были получены композиционные материалы полисульфона и полиэтилентерефталата, содержащие термостабильный простой полиэфир – полигидроксиэфир бисфенола А, который синтезирован методом осадительной поликонденсации из эпихлоргидрина и бисфенола А. Образцы полигидроксиэфира с молекулярной массой 25–45 тысяч у.е. вводились в полимерную матрицу методом экструзии, либо совместным растворением в легколетучем органическом растворителе с последующей сушкой образца. Проводилось испытание термостойкости, исследование показателя текучести расплава полученных композитов. Показано, что введение в полимерную матрицу полисульфона и полиэтилентерефталата 3–9 масс. % полигидроксиэфира приводит к снижению показателя текучести расплава на 25–30 °С за счет эффекта пластификации.

The article is devoted to possibility of using recycled polyethylene terephthalate by obtaining on its basis of composite materials. Used as filler layered silicate Nalchik, which is produced in the North Caucasus. Investigated the optimum compositions and some properties of the composites.