Relaxation changes in polyacrylonitrile yarn during the heat-stretching processSpringer Science and Business Media LLC - Tập 21 - Trang 482-484 - 1990
B. A. Fomenko, M. V. Rumyantseva, É. A. Pakshver, Yu. A. Tolkachev
The stress in polyacrylonitrile yarns of various chemical structures and of various linear densities has been studied under isometric heat-treatment under static and dynamic conditions. Limits of the relaxation states have been determined over a wide range of temperature and rate (or duration) of yarn heating, in the contact and convective methods of heating.
Intensification of thermooxidation of polyacrylonitrile fibresSpringer Science and Business Media LLC - Tập 31 - Trang 437-440 - 1999
O. N. Panichkina, T. A. Belousova, A. T. Serkov, G. A. Budnitskii, M. B. Radishevskii
It was found that in thermooxidation of PAN fibres in air by the conductive (contact) method, the density of 1.38–1.40 g/cm3, required for subsequent high-temperature treatment, is attained in 30–60 min. The chemical composition and equilibrium sorption of the PAN fibre oxidized by convective tempering do not differ significantly from the fibre fabricated in industrial conditions in convective tem...... hiện toàn bộ
Effect of Axial Pressure of Fibres on Deformation of Fibre Carrier Flanges During Optical Glass Fibre WindingSpringer Science and Business Media LLC - Tập 49 - Trang 122-124 - 2017
S. V. Kuzyakova, N. V. Stepnov, E. Yu. Koroteeva
Optical glass fibres act as a light transmitting conduit, do not conduct electricity, and transmit data with a high speed and over long distances. During winding of special optical glass fibres on spools having flanges, because of generation of axial pressure that causes deformation of the flanges, the marginal coils may slip into the gaps between the winder and the spool flanges, which disrupts p...... hiện toàn bộ
Investigation of the supermolecular structure parameters of fluorine-containing monofilamentsSpringer Science and Business Media LLC - Tập 16 - Trang 340-342 - 1985
A. V. Bezprozvannykh, B. N. Tarakanov, Yu. I. Sokolov, I. B. Klimenko, N. K. Podlesskaya, L. A. Vol'f
The structure-sensitive coefficient of oriented fluorine-containing monofilaments rises with increase in the melt flow index. A dependence of crystallite defectiveness on the melt flow index has been detected for the tetrafluoroethylene-ethylene copolymer. The strength of monofilaments from a copolymer of tetrafluoroethylene with perfluoroalkyl vinyl ether is less than that of monofilaments from a...... hiện toàn bộ
Refining the Parameters of Models of Deformation Processes of Polymer Textile MaterialsSpringer Science and Business Media LLC - Tập 54 - Trang 204-208 - 2022
N. V. Pereborova
The article considers the methods for correcting the parameters of mathematical models of deformation processes of polymer textile materials, which increase the accuracy of their numerical prediction. The specified parameters correction is based on the application of the reliability criteria for simulating the deformation processes of these materials, obtained using the operational calculus method...... hiện toàn bộ