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Article
Using Phase Inversion to Create Porous Spheres Based on Polysulphone
A procedure is developed for creating porous spheres based on polysulfone via phase inversion from a system of a mixed solvent (chloroform, n-methylpyrrolidone) and a mixed precipitant (water, ethanol).
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Article
Parallel Mechanisms with Flexible Couplings
A survey of parallel mechanisms with flexible couplings is presented, and a classification is proposed, on the basis of the type of drive and the types of available motion. Each group is subdivided on the basi...
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Article
Vibration in Machining
Test-bench data on industrial vibration are analyzed. On the experimental apparatus, the effectiveness of vibration-suppressing materials may be assessed. On that basis, the vibrational load during machining p...
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Article
Safety of Machining Processes
Energy losses in machining may negatively affect the environment and the human population. Analysis of this relationship permits the formulation of a comprehensive safety index.
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Article
Tool Wear and Microcrack Formation in the Machining of Medium-Carbon Bearing Steels
The tool wear and microcrack formation in the machining of medium-carbon bearing steels are studied experimentally for the example of ШХ15-ШД and 75ХГСФ steels. Numerous features of the wear of polyhedral sing...
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Article
Effect of (co)polymers based on methacrylic acid on the state of cells of the immune system
A series of methacrylic acid co(polymers) were obtained using various reversible chain transfer agents. The molecular weight characteristics of the synthesized (co)polymers were determined using gel permeation...
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Article
Selection of Best Available Machining Technologies in Terms of Energy Efficiency
The efficiency of energy conversion and transmission to the cutting zone may be increased by reactive-power compensation, with accompanying resource conservation.
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Article
The role of information technology in rotor balancing
The potential of multimedia interactive simulators is discussed. As an example, the simulator for a system measuring vibration parameters is considered. By means of this simulator, the components and operating...
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Article
Development of polymer radio-absorbing materials with carbon nanotubes for extremely high frequency range
Radio-absorbing properties of polymer composite materials with carbon nanotubes (CNT) are studied in the extremely high frequency (EHF) range. The possibility is shown of producing radio-absorbing materials (R...
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Article
Preparation of composite materials on the basis of polyvinyl chloride and nanomodifiers
The influence of carbon nanocompositions on physical-mechanical properties of polyvinyl chloride was investigated.
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Article
Physicomechanical properties of polyurethane foam filled with pyrolytic chromium coated aluminosilicate ash microspheres
The possibility of depositing pyrolytic chromium on the surface of aluminosilicate ash microspheres and preparing rigid polyurethane foam filled with aluminosilicate ash microspheres was examined. The physicom...
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Article
Effect of the modification of aluminosilicate ash microsphere surfaces on physical-mechanical properties of polyurethane foam
The rigid polyurethane foam materials based on ODF-M complex oligoester filled by hollow silicaalumina microspheres with various surface nature were studied. Physical-mechanical properties of the obtained mate...
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Article
Fireproof polymer compounds based on polyvinyl chloride and perchlorovinyl resin
Preparation of fireproof polymer compounds and properties of the resulting materials were studied. The synergistic effect of mixtures of fire-retardant additives based on thermally expanding graphite was exami...
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Article
Effect of aluminosilicate microspheres on physicomechanical and rheological properties of rigid foamed polyurethanes
Possibility of obtaining rigid foamed polyurethanes filled with aluminosilicate microspheres was analyzed. The physicomechanical and rheological properties of these composites were studied.
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Article
Mechanical properties of polyurethane foams modified by polymer-polyols
The mechanical properties of polyurethane foams based on tolylene diisocyanate and polyether modified by polymer-polyol, which is a styrene-acrylonitrile copolymer grafted onto polyol, were studied. The breaki...
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Article
Flocculation Power of Chitosan and Its Derivatives in Mixtures with Anionic Flocculants
The flocculation properties of chitosan (cationic component) and its copolymers with (meth)acrylic acid were studied. The flocculation power of grafted chitosan copolymers with dimethylaminoethyl methacrylate ...
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Article
Microcomputer-based medical terminal
