Simulation of the Parameters of an Ultrasonic Dosed Cavitator with Radiative Plate. Part 1. Analysis of Effective Technical Means of Ultrasonic Exposure and a Technique of Variant Structural-Parametric Design

Сівецький

Advances in Polymer Technology

et al. 2019

The various aspects of physicochemical modification of the components of structural materials of functional application based on classical composites and nanocomposites are analyzed. Potential applications of such materials are briefly described. Ultrasonic cavitation treatment is considered as a basic method of physical modification when obtaining the indicated classes of composites. The influence of ultrasonic treatment modes on the technological and operational properties of reactoplastic polymers, as well as on the hardening of reinforced composites based on them, is investigated. Technical means of ultrasonic cavitation processing of liquid binders and polymer composites based on them are briefly described. An effective spectrum of interrelated structural and technological parameters of ultrasonic treatment has been characterized, which is established by calculation and experimentally-statistically. The design issues of the technological processes of obtaining polymer composites of functional application are analyzed. The efficiency of creating carbon fiber composite materials, as well as the prospects for creating of these materials based on reinforcing fabric with nanomodified fillers, is described. The methods of obtaining functional nanomodified carbon-composites with improved physicomechanical and operational properties, in particular with increased strength and electrical conductivity, are characterized. The effectiveness of the ultrasonic treatment and production of nanomodified thermoplastic composite materials by extrusion method is considered. Some issues of forming products from intelligent polymer composites are analyzed. The results of the survey can be used in the design of advanced technologies for the creation of functional polymer composites of functional application.

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Section: Equipment For Low Frequency Ultrasonic Processing Of Liquid mentioning

confidence: 99%

Section: Equipment For Low Frequency Ultrasonic Processing Of Liquid mentioning

confidence: 99%

Creation of Structural Polymer Composite Materials for Functional Application Using Physicochemical Modification

Сівецький

Advances in Polymer Technology

et al. 2019

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“…For examples of the developed approaches to the design of high-performance US equipment in the form of US concentrators used in the sonication of liquid PB and impregnation, as well as dosed devices with a rectangular radiating plate, you can refer in studies [49][50][51][52][53]. In the automated design and operation of a vibrational system consisting of an emitting plate with vibrators, it is necessary to perform a number of conditions that provide a resonant mode of operation of these oscillatory systems.…”

Section: Physicomechanical Properties Of Sonicated Epoxymentioning

confidence: 99%

“…Analytical acoustic dimensions of the components of a sectional piezoelectric transducer, which is used in the process of contact US treatment of dry tissue 1120 mm wide, which is soaked with liquid PB, are proposed. Effective technical means of US cavitation treatment and dosed deposition of thermoplastic binders on impregnated fibrous fillers are discussed in work [51]. A technique is proposed for designing the parameters of US cavitators with rectangular radiating plates as applied to a specific technological process.…”

mentioning

confidence: 99%

“…In the continuation of the approaches described in the studies [51,52], the article [53] discusses the main techniques of computerized three-dimensional design of an US metering device with a rectangular radiating plate based on the developed methodology of structural-parametric geometric modeling. In the framework of this methodology, the use of the system approach, which involves the representation of any object or the process of its formation as a certain ordered set of some individual components of the components, which, in turn, may include other elements, is preferable.…”

mentioning

confidence: 99%

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Use of Physicochemical Modification Methods for Producing Traditional and Nanomodified Polymeric Composites with Improved Operational Properties

Сівецький

International Journal of Polymer Science

et al. 2019

Various aspects of the methods of physical and physicochemical modification of components of filled thermoplastic composite materials are analyzed, aimed at improving the surface properties of the fillers and the technological properties of the polymer matrix during their interaction. It is noted that the improvement of the interfacial interaction of the components of polymer reactoplastic composites, including adhesive strength, is a key factor for improving the reliability of the cured filled composite. As a promising area of research, a modification of the surface of the reinforcing fibrous filler and the technological characteristics of the liquid polymer binder, aimed at increasing their contact properties in the composite, was chosen. The effectiveness of the physical method of modifying the components of composites in the form of low-frequency ultrasonic processing is described. The peculiarities of cluster formation and physicochemical modification of epoxy polymers filled with dispersed fillers are analyzed. Attention is focused on the effectiveness of ultrasonic processing in the cavitation mode for deagglomeration and uniform distribution of nanoparticles in a liquid medium during the creation of nanocomposites. Experimentally confirmed is the improvement of the technological properties of liquid epoxy polymers, modified by ultrasound, used for the impregnation of oriented fibrous fillers, as well as the improvement of the physicomechanical properties of the sonicated epoxy matrices. Some issues of biological modifications of components of polymers for functional application are briefly reviewed.

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Some Aspects of Preparations and Applications of Electrochemical Double‐Layer Capacitors (Supercapacitors)

Изотов

Handbook of Supercapacitor Materials

et al. 2021