Methylene diphenyl diisocyanate (MDI) affects the morphology, rheological, mechanical, and relaxation properties, as well as tendency to crystallize of PET in PET/PC/(PP/EPDM) ternary blends produced by the reactive extrusion. Irrespective of the blend phase structure, the introduction of MDI increases the melt viscosity (MFI dropped), resulting from an increase in the molecular weight of the polymer chains; the PET crystallinity was also reduced. MDI favors compatibility of PET with PC in PET/PC/(PP/EPDM) blends. This is explained by intensified interphase interactions on the level of segments of macromolecules as well as monomer units. The presence of MDI causes a substantial rise in the dynamic shear modulus within the high-elastic region of PET (for temperature range between T g,PET and that of PET cold crystallization); the processes of PET cold crystallization and melt crystallization become retarded; the glass-transition temperatures for PET and PC become closer to each other. MDI affects insignificantly the blend morphology or the character of interactions between the disperse PP/EPDM blend and PET/PC as a matrix. PP/EPDM reduces the intensity of interphase interactions in a PET/PC/(PP/ EPDM), but a rise in the degree of material heterogeneity. MDI does not change the mechanism of impact breakdown in the ternary blends mentioned above. Increased impact strength of MDI-modified materials can be explained by higher cohesive strength and resistance to shear flow at impact loading.

Abstract. It has been investigated how methylene diphenyl diisocyanate (MDI) influences the morphology, rheological, mechanical and relaxation properties, as well as PET crystallizability, of PET/PC/(PP/EPDM) ternary blends produced by the reactive extrusion process. It appears that irrespective of phase structure of the blends, MDI causes a rise in melt viscosity (decreased MFI-values) of the material which is the result of an increased molecular weight of the macromolecules; PET crystallization becomes retarded. MDI improves compatibility between PET and PC in PET/PC/(PP/EPDM) ternary blends. Addition of MDI leads to higher values of the dynamic shear modulus for PET high elastic state (in the temperature range between Tg PET and cool crystallization temperature of PET); the PET cool crystallization and melt crystallization processes become retarded; the PET and PC glass transition temperatures approach one another. MDI has been shown not to influence significantly the blend morphology or the character of interaction between the PP/EPDM disperse phase and PET/PC blend matrix.

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Приводятся cоциально-психологические факторы педагогического партнер-ства общества и полиции, выявленные на основе исследования социаль-но-психологической готовности (способности) вступить в эти взаимосвязи, с одновременным вскрытием барьеров, препятствующих осуществлению партнерских отношений со стороны полиции . Исследование проводилось в 2016 г . на базе Академии управления МВД России . В опросе приняли участие руководители органов внутренних дел (N 143) . Анализ результатов исследо-вания позволил выделить пять типов сотрудников с различным уровнем ком-муникативной компетентности и готовности осуществлять педагогическое партнерство с гражданами . Подчеркивается, что специфика изучаемого явления заключается в том, что, помимо собственно социально-психологи-ческих факторов педагогического партнерства общества и полиции, объек-тивно существуют также и правовые, криминогенные и криминальные пси-хологические факторы, относящиеся к компетенции органов системы МВД Российской Федерации и влияющие на качество данного партнерства .Ключевые слова: педагогическое партнерство, полиция, общество, ком-петенции, барьеры, коммуникативная компетентность, социально-психоло-гические факторы .* Столяренко Алексей Михайлович, Заслуженный работник высшей школы Российской Федерации, доктор психологических наук, доктор педагогических наук, главный научный сотрудник научно-исследовательского центра, ФГКОУ ВО «Академия управления МВД России», Москва, Россия .

Annotation The operation of well sucker rod pump installations is the most massive way of mechanized oil production. A significant part of the wells equipped with low-speed plants of this type have a low flow rate and high water cut. Such conditions create certain restrictions on updating and modernization of the production fund of equipment in operation. The life cycle of a rocking machine is usually significant and often exceeds 20 years. During ISPR operation, both ground and downhole equipment will inevitably wear out. A significant proportion of failures of the ground part of low-speed ISPR is associated with the reduction of the rocking machine, which is the most responsible and most expensive drive element. The resource of the gearbox directly depends on its load, which is characterized by the moment on its crank (output) shaft. Reducing the maximum torque and moment fluctuations in one full swing of the rocking machine will significantly increase the reliability of the gearbox and the entire installation. This paper describes the mathematical apparatus for calculating the moment on the crank shaft of the gearbox, based on the exact kinematics of the drive and the principle of possible movements. The proposed methodology will allow to solve the problems of designing a balancing drive of a low-speed ISPR, to determine the requirements for the engine and transmission.

A mathematical expression is obtained to determine the number of repairs and hydroimpulse processings that must be performed in each of the M injection wells of the oil field so that the total water injection is maximum. The results of the calculations to determine the total water injection into the reservoir made it possible to graphically study boundaries and limits of the selection of the optimal conditions (areas) of single-time hydroimpulse processings. Usage of single-time hydroimpulse processings with the express method allowed to significantly reduce material costs and maintain a stable level of injection and a selection factor, which enabled only 16 processings to obtain savings.

Oil lifting via sucker rod pump units is the most widespread way to extract oil reservoir products. Complications adversely affecting the operation of downhole equipment and entailing increased wear and premature failure of sucker rod pump units arise in the process of high-viscosity oil production. The pressure and temperature of the well fluid are the main parameters for assessing changes in the properties of the extracted products and for determining the static level of the liquid column. It is possible to control pressure and temperature using sensors located in the immediate vicinity of the well pump. Today, a wired channel is the main way of transmitting the measured data to the well mouth. The present work proposes a new technical solution for a wireless communication channel along tubing strings and rods. The columns are separated by asphaltenes deposits on the surface of the columns and centralizers mounted on the rods. The rod string isolation from the tubing string at the wellhead is carried out through suspension modernization. Columns are closed inside the pump, specifically, on the cylinder-plunger contact. Information is transmitted from the bottom by means of a submersible module, consisting of an electrical separator and electronic circuit. The latter controls the separator closure and opening. The results of measurements of the resistance between the columns indicate the possibility of implementing a communication channel.

Binary eutectic solutions are analyzed as a foundation for a Generalized Lattice Model of each component. Phase transitions of binary solutions depending of concentration of its components and temperature are determined with equations for invariant two-phase equilibriums by construction of binary-phase diagrams. The paper demonstrates a possibility to construct binary-phase diagrams with minimal error with respect to reference sources. An example of cadmium-zinc alloy is used to show changes in its characteristics depending on percentages of its components. An application is suggested for items with cadmium-zinc coating.