scholarly journals Evaluation of the durability of mastic deck covering based on polymer composites in the range of operating stresses and temperatures

2021 ◽  
Vol 2131 (4) ◽  
pp. 042047
Author(s):  
E Burmistrov ◽  
A Burmistrova ◽  
A Tikhomirov ◽  
P Bimberekov
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Polymer Composite ◽  
Protective Coatings ◽  
Experimental Studies ◽  
Cyclic Stress ◽  
Polymer Composite Materials ◽  
Ship Hulls ◽  
Methodological Approaches ◽  
Ship Repair

Abstract The urgency of anticorrosive protection issues of ship hulls, deck structures, mechanisms, etc., as one of the main problems of the naval, is noted. One of the options for its effective solution is the use of coatings based on various polymer-composite materials. The authors substantiate the need for a preliminary assessment of the reliability and durability of such coatings, taking into account high humidity and aggressiveness of the operating environment, the corrosion of the repaired surfaces, the cyclic effect of stresses and alternating temperatures, etc. Proceeding from this, using the example of multicomponent polymer-composite compositions of the “Sprut” type, methodological approaches to the study of the polymer-composites durability for ship repair are considered. Their comparative characteristics are given. A mathematical model for assessing the durability of polymer-composite materials and coatings based on them is described, and the experimental studies’ results of their durability under static and cyclic stress in the operating temperature range are presented. The obtained results of theoretical and experimental studies are important for development of the methodological approaches to increasing the durability of mastic deck coatings based on polymer composite materials and the development of practical guidelines for the use of adhesives in shipbuilding and ship repair. The research results make it possible to develop new and improve the adopted technologies for the use of protective coatings on the structures of ship hulls and deck structures. Thus, the problems of the water transport operation, associated with the anti-corrosion protection of ship hull and deck structures and their repair, can be solved.

High Power Switching Behavior in Conductor-Filled Polymer Composites

1997 ◽  
Vol 500 ◽  
Author(s):  
Anil R. Duggal ◽  
Lionel M. Levinson
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Polymer Composite ◽  
High Power ◽  
Short Circuit ◽  
Polymer Composite Materials ◽  
Switching Behavior ◽  
Positive Temperature ◽  
Filled Polymer ◽  
Ptcr Effect

ABSTRACTIt has generally been assumed that the switching properties of conductor-filled polymer composites are based on a positive temperature coefficient of resistance (PTCR) effect where, at a certain switch temperature, the material resistivity increases by orders of magnitude. Here we present studies of the electrical switching behavior at high current densities which demonstrate that, in the high power regime, the observed switching is not based on the PTCR effect. Instead, we show that this type of switching appears to be a general feature in conductor-filled polymer composite materials and a qualitative model for the switching phenomenon is proposed. These results suggest that conductor-filled polymer composite materials can provide a new non-mechanical way of rapidly limiting high power short circuit currents. This should have broad applications in the circuit protection industry.

scholarly journals Formation of surface layer quality under abrasive treatment of polymer-composite materials

2020 ◽  
Vol 20 (3) ◽  
pp. 235-242
Author(s):  
M. A. Tamarkin ◽  
Eh. Eh. Tishchenko ◽  
A. V. Verchenko ◽  
V. M. Troitskii
Keyword(s):  
Surface Roughness ◽  
Composite Materials ◽  
Polymer Composite ◽  
Adhesive Bonding ◽  
Experimental Studies ◽  
Design Procedure ◽  
Polymer Composite Materials ◽  
Waterjet Cutting ◽  
Abrasive Treatment ◽  
Study Results

Introduction. The study results of the abrasive processing of parts made of polymer-composite materials are presented. The features of processing polymer composites and the technology of preforming through waterjet cutting are described. The stages of preparation of a part made of polymer-composite material for the “glueing” operation are investigated.Materials and Methods. Dependences for determining the surface roughness under waterjet cutting of polymercomposite material are considered. Research is carried out to achieve the required surface roughness under adhesive bonding of workpieces. The dependence is given that describes the roughness that is required for a reliable adhesive bond.Results. The theoretical and experimental studies of the waterjet cutting process are resulted. Their implementation technique, the tool and equipment used are described. The results of theoretical and experimental studies are compared. Their high convergence is established. The results of experimental studies on the preparation of parts made of polymercomposite materials for glueing are shown. The abrasive tools and processing modes are selected.Discussions and Conclusions. The process design procedure of abrasive treatment of workpieces from polymercomposite materials is proposed.

Research of Hardness of Polymer Composite Materials Based on Silicone and Aluminium Hydroxide with Various Mechanical-Chemical Processing

2021 ◽  
Vol 316 ◽  
pp. 9-15
Author(s):  
N.Y. Efremov ◽  
O.A. Oreshina ◽  
V.D. Mushenko
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Polymer Composite ◽  
Polymer Matrix ◽  
Aluminium Hydroxide ◽  
Functional Materials ◽  
Polymer Composite Materials ◽  
Chemical Processing ◽  
Fluid State ◽  
Powder Filler

Polymer composites are one of the types of modern functional materials. This class includes many different in structure and field of application materials, including dispersed-filled polymer composites [1]. Such materials are made by mixing a polymer matrix in a fluid state with a powder filler and then curing. The properties of the resulting materials are influenced by a variety of factors, including the nature of the preliminary (prior to addition to the mixture with the polymer) mechanical-chemical processing of the filler.

POLYMERS AND POLYMER COMPOSITES IN SPORT (review)

2020 ◽  
pp. 81-89
Author(s):  
O.N. Klimenko ◽  
◽  
M.I. Valueva ◽  
A.N. Rybnikova ◽  
◽  
...  
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Polymer Composite ◽  
Carbon Fibers ◽  
Technical Information ◽  
Polymeric Materials ◽  
Polymer Composite Materials ◽  
Sports Industry ◽  
Scientific And Technical Information

Рrovides an overview of scientific and technical information – Russian and foreign periodicals, patents for inventions – in the field of the use of polymeric materials in the sports industry and sports infrastructure. Data on world manufacturers, applied technologies, Russian developments in this direction are presented, examples of the practical use of polymeric materialsin the sports industry are shown. Special attention is paid to polymer composite materials,in particular, based on carbon fibers.

Fiber-based hybrid polymer composites for aviation: A review

2020 ◽  
pp. 126-138
Author(s):  
E. D. Kolpachkov ◽  
A. O. Kurnosov ◽  
A. P. Petrova ◽  
A. E. Raskutin
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Polymer Composite ◽  
Classification Criteria ◽  
Polymer Composite Materials ◽  
Hybrid Polymer ◽  
Distinctive Features ◽  
The Creation ◽  
Hybrid Polymer Composite

This article discusses the main classification criteria for fiber-based hybrid polymer composite materials. Their distinctive features are analyzed; examples of hybrid PCMs are given. The experience of FSUE VIAM in the creation of hybrid PCMs is considered.

Carbon and Glass Fibers for Polymer Composites

2019 ◽  
Vol 816 ◽  
pp. 19-26 ◽  
Author(s):  
Aues A. Beev ◽  
S.Yu. Khashirova ◽  
D.A. Beeva ◽  
M.U. Shokumova ◽  
R.B. Tkhakakhov
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Polymer Composite ◽  
Mechanical Characteristics ◽  
Glass Fibers ◽  
Polymer Composite Materials ◽  
Surface Activation ◽  
Physical And Mechanical Characteristics

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.

scholarly journals 4D printing with spin-crossover polymer composites

2020 ◽  
Vol 8 (18) ◽  
pp. 6001-6005 ◽  
Author(s):  
Mario Piedrahita-Bello ◽  
José Elias Angulo-Cervera ◽  
Rémi Courson ◽  
Gábor Molnár ◽  
Laurent Malaquin ◽  
...  
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Polymer Composite ◽  
Spin Crossover ◽  
Polymer Composite Materials ◽  
4D Printing

4D spin crossover–polymer composite materials were printed using a stereolithographic method.

scholarly journals Modeling the Structures of Oriented Macrofiber Polymer Composites as Capillary-Porous Bodies

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Aleksandr E. Kolosov ◽  
Aleksandr V. Gondlyakh ◽  
Volodymyr I. Sivetskii ◽  
Elena P. Kolosova ◽  
Volodymyr V. Vanin ◽  
...  
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Polymer Composite ◽  
Composite Structures ◽  
Geometric Modeling ◽  
Structural Characteristics ◽  
Geometric Model ◽  
Polymer Composite Materials ◽  
Technological Parameters ◽  
Porous Bodies

The problems of modeling the structure and design of technical parameters for forming of oriented macrofiber polymer composites are analyzed. The considered approaches are based on the application of geometric modeling of the structure of oriented fibrous fillers and the design of the parameters of technical means for forming oriented macrofiber polymer composite materials. Peculiarities of the application of the phenomenological and structural approaches to the design of structural and technological parameters of technical means and to the calculation of the elements of composite structures based on oriented macrofibrous fillers are considered. The technique for determining the structural characteristics of oriented macrofibrillar fillers based on its adequate geometric model as capillary-porous bodies is given. As the structural characteristics, the porosity, the specific internal surface, and also the effective (hydraulic) capillary radius of oriented macrofibrous fillers are considered. It is noted that the obtained structural models are used, in particular, to the prognosis of the design and technological parameters of the technical means for molding macro-fiber polymer composite materials.

scholarly journals EFFECT OF NANOCARBON ADDITIVES ON STABILITY OF POLYMER COMPOSITES

2020 ◽  
Vol 63 (11) ◽  
pp. 4-12
Author(s):  
Eldar B. Zeynalov ◽  
Minira M. Agaguseynova ◽  
Nazila I. Salmanova
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Polymer Composite ◽  
Aqueous Media ◽  
Oxidative Degradation ◽  
Fullerene Molecule ◽  
Industrial Applications ◽  
Polymer Composite Materials ◽  
Optimal Dosage ◽  
Interfacial Compatibility

This review briefly describes a state of research on the effect of fullerenes and carbon nanotubes (CNTs) on a durability of various polymer composite materials under extreme conditions. Fullerenes C60, C70, fullerene soot and CNTs integrated into the polymer matrix effectively prevent both thermal and thermo-oxidative degradation, as well as photo-oxidation processes. The stabilization mechanism of the carbon nanocompounds (CNC) is likewise and consists of the substantial end-capping termination of oxidation destructive chains on the nanocarbon skeleton. At that, the data array unequivocally indicates the predominant addition of carbon-centered alkyl radicals. Various polymer composite materials based on polyolefins, polyacrylates, polyamides, polycarbonates, elastomers are involved into the consideration. The approaches described are mostly aimed to increase the level of stabilizing activity of the polymer composites using different combinations of nanocarbon additives. The optimal dosage of CNC and interfacial compatibility between the polymer and fillers can significantly increase the heat resistance of the composites. The replacement of carbon atoms in the fullerene molecule with heteroatoms can also change its electronic properties and improve the antiradical and antioxidant activity. Areas for the effective use of fullerene C60 in aqueous media can be significantly expanded by modification with hydrophilic polymers. Thus, the performance of CNC integrated in the polymer composites is similar with those for strong synthetic stabilizers. CNC have good prospects for real industrial applications.

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