13 research outputs found
Study of Physical and Mechanical Properties of Non-Polar Rubber-Based Sealants Depending on Filler Type and Volume
No full textNon-curing sealants have a complex composition consisting of a mixture of polymers, plasticizers, extenders, adhesive additives, various special purpose additives (pigments, biocides, fire-retardants), and therefore the optimization of their compositions to improve the physical and mechanical and technological characteristics is rather complicated. This article demonstrates the experimental results of physical and mechanical properties such as penetration, strength, density, adhesion to metal and concrete, water absorption, and elongation of sealants on the basis of butyl-rubber and EPDM, depending on filler type and volume. The basic regularities of the nature influence and fillers on the physical and mechanical and technological characteristics of sealants are revealed. We’ve identified the ultimate proportion of fillers when the sealants meet the required specifications. The research results are the recommendations on the selection and optimization of the filler content of the sealant composition.</jats:p
Theoretical and Experimental Investigation of Vibration Damping Sheet Dynamic Behavior
No full textA great deal of attention is presently being drawn to the question of noise and vibration damping. One of the basic means of the effective damping of unfavorable noises and vibrations is the usage of special sheets with high vibration and noise damping properties in thin-slab structures. In this article the results of a study of the dynamic behavior (of the loss factor) of multilayer vibration damping sheets are being described. The aim of this article is to show the design optimization of multilayer vibration damping sheets, carrying a high loss factor. The theoretical prerequisites for the structure optimization of vibration damping sheets, having a high loss factor, have been determined. The experimental studies on the influence of the thickness of the vibration damping layer, thickness and Young’s modulus of experimental with theoretical data have also been carried out. More effective designs of multilayer vibration damping sheets have been scientifically substantiated.</jats:p
The Demidov period Nevyansk towers
No full textСтатья посвящена изучению истории изготовления башенных часов на Невьянском заводе в годы, когда он принадлежал демидовым. Приведены сведения о существовавшей в Невьянске башне, которая использовалась для выполнения работ по сборке и наладке таких часов. Опубликован фрагмент документа 1759 года, содержащий сведения о деревянной и каменной башнях в Невьянске. Устанавливается время существования деревянной башни, имена мастеров, которые занимались изготовлением часовых механизмов, названия заводов, на которых при демидовых существовали такие башни.The article is devoted to the history of the manufacture of tower clocks at the Nevyansk plant in the years when it belonged to the Demidovs. The author gives information about the tower that existed in Nevyansk, which was used to carry out the assembly and commissioning of such watches. He publishes a fragment of a 1759 document containing information about the wooden and stone towers in Nevyansk. He sets the time of the existence of the wooden tower, the names of the masters who were engaged in the manufacture of clockworks, names the plants on which such towers existed under the Demidovs
Rheological and Mechanical Study of Micro-Nano Sized Biocarbon-PLA Biodegradable Biocomposites
No full textPinewood sawdust was pyrolyzed to create a micro-nanocarbon. The adsorbent’s particle size was reduced during a ball milling procedure to improve the surface area and encourage porosity growth. The synergistic effects of micro-nano-adsorbent-reinforced poly(lactic acid) (PLA) composites were investigated by analyzing the efficiency of the rheological process. The properties of the prepared composites also were examined using various characterization tests, including tensile and hardness tests, crystallinity tests, elemental composition, and plasticity behavior tests. Therefore, in-depth investigations and comparisons were also carried out to confirm the created composites’ efficacy compared to other outcomes
Rheological and mechanical study of micro-nano sized biocarbon-PLA biodegradable biocomposites
No full textPinewood sawdust was pyrolyzed to create a micro-nanocarbon. The adsorbent’s particle size was reduced during a ball milling procedure to improve the surface area and encourage porosity growth. The synergistic effects of micro-nano-adsorbent-reinforced poly(lactic acid) (PLA) composites were investigated by analyzing the efficiency of the rheological process. The properties of the prepared composites also were examined using various characterization tests, including tensile and hardness tests, crystallinity tests, elemental composition, and plasticity behavior tests. Therefore, in-depth investigations and comparisons were also carried out to confirm the created composites’ efficacy compared to other outcomes
Rheological and Mechanical Study of Micro-Nano Sized Biocarbon-PLA Biodegradable Biocomposites
Get PDFPinewood sawdust was pyrolyzed to create a micro-nanocarbon. The adsorbent’s particle size was reduced during a ball milling procedure to improve the surface area and encourage porosity growth. The synergistic effects of micro-nano-adsorbent-reinforced poly(lactic acid) (PLA) composites were investigated by analyzing the efficiency of the rheological process. The properties of the prepared composites also were examined using various characterization tests, including tensile and hardness tests, crystallinity tests, elemental composition, and plasticity behavior tests. Therefore, in-depth investigations and comparisons were also carried out to confirm the created composites’ efficacy compared to other outcomes
Rheological and Mechanical Study of Micro-Nano Sized Biocarbon-PLA Biodegradable Biocomposites
Get PDFPinewood sawdust was pyrolyzed to create a micro-nanocarbon. The adsorbent’s particle size was reduced during a ball milling procedure to improve the surface area and encourage porosity growth. The synergistic effects of micro-nano-adsorbent-reinforced poly(lactic acid) (PLA) composites were investigated by analyzing the efficiency of the rheological process. The properties of the prepared composites also were examined using various characterization tests, including tensile and hardness tests, crystallinity tests, elemental composition, and plasticity behavior tests. Therefore, in-depth investigations and comparisons were also carried out to confirm the created composites’ efficacy compared to other outcomes
Montmorillonite-activated nanocarbon from pine wood sawdust and its biocomposites
Get PDFDue to plastic’s promising qualities, including corrosion resistance, low density, and user-friendly design, their manufacturing, and use have significantly risen over the last 60 years. The growth of the plastics industry
has resulted in the development of various plastic products with broad applications using various plastics, such as the introduction of natural polymers, modified natural polymers, synthetic plastics, biodegradable plastics, thermoplastics, and thermosetting plastics. Fig. 8.1 depicts the global plastic demand broken down by polymer type (What Is Hot - Multi-client study, 2023). According to the information provided by Pardos Marketing (What Is Hot - Multi-client study, 2023), polypropylene (PP), accounts for 31%
of high-demand plastic, low-density polyethylene (LDPE), and linear lowdensity polyethylene (LLDPE), accounts for 18% of high-demand plastic, and polyvinyl chloride (PVC), accounts for 14% of high-demand plastic (PVC)
Implementation of silicon photomultipliers in scintillation detector systems of the GAMMA-400 space gamma-ray telescope
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