scholarly journals Impact of the plasma flow of a low-pressure high-frequency capacitive discharge on the adhesive and physical and mechanical characteristics of aramid and carbon fibers

2021 ◽  
pp. 8-11
Author(s):  
Yu. V. Antipov ◽  
E. V. Kruglov ◽  
K. S. Pakhomov ◽  
A. E. Chalykh
Keyword(s):  
Carbon Fibers ◽  
Plasma Flow ◽  
High Frequency ◽  
Mechanical Characteristics ◽  
Low Pressure ◽  
Gas Discharge ◽  
Reduced Pressure ◽  
Capacitive Discharge ◽  
Physical And Mechanical Characteristics

The changes in the adhesive and physico-mechanical characteristics of aramid and carbon fibers treated with plasma of a highfrequency capacitive gas discharge of reduced pressure are considered. An increase of ~ 30% in the wettability of the surface of aramid and carbon fibers is shown. It was found that the strength of plastics made on the basis of aramid and carbon fibers treated with a plasma flow increases by ~ 26%.

Promising hybrid fabrics based on carbon and aramid fibers as a reinforcing filler for polymer composites

2019 ◽  
pp. 86-95 ◽  
Author(s):  
G. F. Zhelezina ◽  
V. G. Bova ◽  
S. I. Voinov ◽  
A. Ch. Kan
Keyword(s):  
Composite Material ◽  
Polymer Composites ◽  
Carbon Fibers ◽  
Mechanical Characteristics ◽  
High Strength ◽  
High Modulus ◽  
Hybrid Composite Material ◽  
Hybrid Fabric ◽  
Reinforcing Filler ◽  
Physical And Mechanical Characteristics

The paper considers possibilities of using a hybrid fabric made of high-modulus carbon yarn brand ZhGV and high-strength aramid yarns brand Rusar-NT for polymer composites reinforcement. The results of studies of the physical and mechanical characteristics of hybrid composite material and values of the implementation of the strength and elasticity carbon fibers and aramid module for composite material are presented. 

An analog of the hollow cathode effect in low-pressure high-frequency capacitive discharge

2003 ◽  
Vol 29 (6) ◽  
pp. 525-527 ◽  
Author(s):  
D. A. Malik ◽  
K. E. Orlov ◽  
A. S. Smirnov ◽  
T. V. Chernoizyumskaya
Keyword(s):  
Hollow Cathode ◽  
High Frequency ◽  
Low Pressure ◽  
Capacitive Discharge

scholarly journals ON THE EFFECT OF A GAS DISCHARGE ON THE PROPERTIES OF JUTE

2021 ◽  
Vol 52 (2) ◽  
pp. 38-42
Author(s):  
Marina V. Antonova ◽  
Aleksandr S. Parsanov
Keyword(s):  
High Frequency ◽  
Fibre Surface ◽  
Breaking Load ◽  
Gas Discharge ◽  
Inert Gases ◽  
Plasma Modification ◽  
Capacitive Discharge ◽  
Force Microscopy ◽  
Atomic Force ◽  
Jute Fabrics

The article considers the influence of high-frequency capacitive discharge on the mechanical proper-ties of jute fibres and jute fabrics. The surface changes of jute fibres were studied by scanning electron atomic force microscopy. The authors noted that after exposure to a gas discharge on the fibres, there is a smoothing of the relief boundaries, and the products of etching of the fibre surface are also visible; when etching in the air, destructed areas appear, the surface is damaged and becomes inhomogeneous. An increase in the strength of jute fibres during modification in reactive and inert gases was revealed. During the experiments, it was found that the strength of the samples of jute fibres treated in the high-frequency capacitive discharge in the argon and nitrogen medium is higher than the original fibre samples by an average of 23 %. According to experimental data, an increase in the breaking load of jute fabrics was found to be up to 20% on average. The use of plasma modification at the stage of preparation of jute fibres for carding processes is recommended.

Development of Multifunctional Composites Based on Ultrahigh Molecular Weight Polyethylene

2020 ◽  
Vol 992 ◽  
pp. 398-402
Author(s):  
O.V. Gogoleva ◽  
P.N. Petrova ◽  
E.S. Kolesova
Keyword(s):  
Molecular Weight ◽  
Polymer Composites ◽  
Carbon Fibers ◽  
Mechanical Characteristics ◽  
Ultrahigh Molecular Weight Polyethylene ◽  
Multifunctional Composites ◽  
Performance Properties ◽  
Initial Polymer ◽  
Ultrahigh Molecular Weight ◽  
Physical And Mechanical Characteristics

The present study investigates the influence of carbon fibers of «Belum» brand on the performance properties of polymer composites based on ultrahigh-molecular weight polyethylene. It was established that the composite complex with the content of carbon fibers in the amount of 5 wt.% has the optimum complex of properties. The rate of mass wear is reduced by 3.3 times while maintaining the physical and mechanical characteristics at the level of the original polymer. It was established that the creep of PCM with the composition of UHMWPE + 5 wt.% Belum is 2 times less than the initial polymer. Also, the properties of the developed material based on UHMWPE were compared with unfilled and modified polytetrafluoroethylene (PTFE). It is shown that the creep of UHMWPE is less than the creep of PTFE by 12.5 times. The creep of the composite based on UHMWPE is less than the creep of the composite based on PTFE 13 times.

BENCH DESIGN AND STUDY OF PHYSICAL AND MECHANICAL CHARACTERISTICS OF A TEAT CUP LINER WITH ANTIBACTERIAL FILLER

2020 ◽  
pp. 22-26
Author(s):  
YURY G. IVANOV ◽  
◽  
YELENA V. MASHOSHINA ◽  
LYUDMILA N. VERLIKOVA ◽  
DARIA G. GELETIY ◽  
...  
Keyword(s):  
Mechanical Characteristics ◽  
Physical And Mechanical Characteristics

Discharge-pulse Geotechnical Electro Discharge Technology of Bases Strengthening

2020 ◽  
Vol 787 (12) ◽  
pp. 63-65
Author(s):  
N.S. Sokolov
Keyword(s):  
Bearing Capacity ◽  
Mechanical Characteristics ◽  
Discharge Pulse ◽  
Zero Values ◽  
Traditional Technologies ◽  
Negative Friction ◽  
Geotechnical Problems ◽  
Physical And Mechanical Characteristics

The problem of increasing the bearing capacity of the base is an relevant problem in modern geotechnical construction. When significant loads are transmitted to the base, the use of traditional technologies is not always justified. Often there is an urgent need to use non-standard ways to strengthen the bases. In many cases, the geotechnical situation is aggravated by the presence of weak underlying layers with unstable physical and mechanical characteristics in engineering-geological sections. When strengthening such bases with the help of traditional piles, the latter can get negative friction, which significantly reduces their bearing capacity on the ground, sometimes reaching zero values. This may lead to additional precipitations of the objects being constructed and constructed in the zone of geotechnical influence. The use of ERT piles in most cases successfully solves many complex geotechnical problems.

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