FIBRE CHEMISTRY

V. Ya. Entin, T. L. Platonova

An application of simulation and recovery method is investigated to control the tension stabilization process of the drawn thread.

P. V. Mikheev, A. K. Lebedev, L. R. Borisova

A series of deformation diagrams of carbon, glass, and aramid fiber bundles (complex filaments) were predicted using the real strength distribution and the three-parameter distribution. The strength values were compared with the results of direct modeling using the experimental distribution and experimental data of filament manufacturers. The general appearance of the deformati…

A. M. Litvinov, A. G. Makarov, A. A. Kozlov

Expanding the application areas and operating conditions of marine ropes requires more thorough research into their deformation properties. Such research can be carried out using mathematical modeling of deformation processes, which include both viscoelastic relaxation and viscoelastic creep.

B. M. Primachenko

A method for predicting parameters of the structure of a reinforced composite based on epoxy-dian resin is described. The results of prediction of the structure parameters were validated by experimental data. The experimental data were processed using standard methods of the state system for ensuring the uniformity of measurements.

E. S. Sashina, V. M. Dedlovskaya, O. I. Yakovleva

The heat-regulating properties of polyacrylonitrile films with added microcapsules containing paraffin were studied. The difference in the surface temperatures of films without paraffin and with added (5 wt% and more) microcapsules reached 15-20°C upon heating to 100°C. Conversely, the heat accumulated by the fused paraffin was released during cooling of the films. The surface …

O. V. Kozhevnikova, E. S. Bokova, A. V. Dedov, V. G. Nazarov

The abrasion resistance of composite materials obtained by varying the degree of impregnation of a nonwoven needle-punched fabric made from a mixture of polyethylene terephthalate fibers with linear densities of 0.22 and 0.66 tex with an aqueous polyurethane dispersion was investigated. Kinetic dependences of the mass reduction of the samples during abrasion on the degree of im…

V. G. Suchkov, A. V. Vershinina, S. N. Ivanova, R. G. Vasilov et al.

Abstract not available. Bibliographic information is searchable.

S. V. Kiselev

The development of mathematical modeling methods for deformation processes of medical polymer yarns was a necessary step for further digital prediction and qualitative assessment of the performance of these materials.

V. G. Nazarov, N. I. Godin, A. V. Dedov

The effect of pressure in a hydraulic tension system of guiding rollers on the porosity coefficient and mechanical properties of materials produced by thermomechanical treatment of nonwoven needle-punched fabrics based on polyethylene terephthalate and bicomponent fibers in ratios of 90/10 and 70/30 wt% was studied. A diagram of the equipment used to expose the fabric to heat a…

M. S. Ivanov, A. E. Polyakov, N. M. Sharpar, P. G. Frasyn et al.

A method for achieving insensitivity of an automatic tension regulation system to change in the moment of resistance by using a fuzzy regulator is described. To get the desired forms of transient tension characteristics, a linguistic description has been presented.

N. I. Godin, A. G. Evdokimov, A. V. Dedov, V. G. Nazarov

The effect of thermomechanical treatment modes on the mechanical properties of nonwoven needle-punched fabrics based on blends of bicomponent fibers with a linear density of 0.44 tex and polyethylene terephthalate fibers of 0.33 and 0.66 tex in a 30/70 ratio was studied. Materials produced by treating a fabric based on a blend of bicomponent and polyethylene terephthalate fiber…

O. V. Kozhevnikova, A. V. Dedov, A. A. Stepashkin, V. G. Nazarov

The hardness of composite materials obtained by impregnating nonwoven needle-punched fabrics made of polyethylene terephthalate and polyacetal fibers with an aqueous polyurethane dispersion was studied and depended on the formation of an intermediate layer during the fabric puncture process in which the packing density of fibers oriented parallel to the fabric surface exceeded …

I. M. Egorov

The present paper studies the digital prediction of elastic, viscoelastic, and plastic deformation of nonwoven geotextiles. Problems of determining these deformation components are solved through computational prediction using the parameters of a nonlinear viscoelastic creep model.

A. A. Kozlov

The use of highly stretchable textile materials incorporating elastomeric threads is rapidly developing. Therefore, the application of such materials in areas related to the production of compression medical devices arouses a legitimate interest.

N. V. Pereborova

The development of numerical methods for predicting deformation-recovery processes in aramid textile yarns allows the properties of these materials to be comparatively analyzed, the relationship between mechanical properties and structure to be studied, targeted technological control of properties during the development and production of new materials to be conducted, and short…

V. I. Vagner, N. V. Pereborova, A. V. Vershigora

Currently, the industrial focus is on developing new materials, saving energy and resources, and making sure production and products are as eco-friendly as possible. In the practice of construction and road works, increasing attention is being paid to geotextile nonwoven materials, the use of which improves the quality of roads and road structures, as well as increases their ef…

A. M. Litvinov

The present article uses the Boltzmann-Volterra integral relations to study digital prediction of deformation processes in marine polymer ropes. The separation of the total deformation and mechanical work of deformation of marine polymer ropes into components is also considered.

V. V. Khammatova, R. F. Gainutdinov, E. A. Khammatova, D. V. Pushkar’

A method for improving the mud- and water-repellent properties of materials with chemical fibers to produce activewear and special clothing is discussed. Plasma modification of textile materials using a nonequilibrium, low-temperature, low-pressure plasma activates the fiber surface, producing a protective coating with better water- and mud-repellent properties than control sam…

Yu. Yu. Vilacheva, O. V. Kudrinskaya, O. V. Astashkina, M. E. Vznuzdaev et al.

Results from the development and studies of carbon sorption-active fibrous materials modified with two types of nanoparticles, i.e., water-soluble fullerenes and fullerene-containing soot, are reported. The main sorption characteristics of test sorbates from aqueous solution were investigated. The surface morphology was studied using scanning electron microscopy. The porous str…

A. I. Stogova, V. V. Vasil’eva, O. A. Molokanova Moskalyuk

The relaxation properties of badminton strings made of polymer material are studied. Relaxation curves are obtained in a deformation range from 25 to 75% of the breaking elongation. The values of the relaxation process rate parameter are determined. Indicated that a string with a large elongation at break demonstrates higher values of internal stresses and relaxation process ra…