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Determination of the molecular weight distribution of polyacrylonitrile by turbidimetric titration
Springer Science and Business Media LLC - Tập 1 - Trang 457-458 - 1970
L. S. Gembitskii, G. G. Uglanova
Physicomechanical properties of polyethylene gel-fibers at various stages of orientation stretch
Springer Science and Business Media LLC - Tập 25 Số 2 - Trang 101-105 - 1993
С. А. Гордеев, В. Г. Алексеев, V. N. Kaminskii, B. A. Tsaplin, V. P. Galitsyn
Modification of polikon k materials by ultradispersed inorganic additives
Springer Science and Business Media LLC - Tập 44 - Trang 6-9 - 2012
M. M. Kardash, I. A. Tyurin, D. V. Terin, D. V. Oleinik
The possibility of modifying a sulfonated phenol cation-exchange matrix of chemosorptive Polikon K composite fibers was examined. The fibers consisted of cross-linked, rigid, and relatively brittle polymers and were modified by ultradispersed Fe and Ni additives in order to form structures with accessible ionizable groups that were more resistant to cracking.
Properties of polyacrylonitrile yarns which have been modified with salts of alkali metals
Springer Science and Business Media LLC - Tập 20 - Trang 203-206 - 1989
Sh. G. Abdurakhmanova, Sh. S. Dzhalilov, M. V. Polovnikova, I. F. Khudoshev, M. V. Shablygin, R. S. Ivanova
In modification of polyacrylonitrile fibres with alkali metal salts, a change in structure takes place, morphological nonuniformity in the transverse direction is increased, which aids in fibre crimping Alkali metal salts interact with Nitron fibre both at the carboxyl groups of the polymer and also at its carbonyl groups.
Improved Strength of Aramid Thread Fibers After Surface Treatment with Carbon Nanotubes
Springer Science and Business Media LLC - Tập 52 Số 1 - Trang 63-64 - 2020
С. М. Шебанов, И. Г. Калинина, В. М. Иванов, V. G. Bova, И. К. Новиков, A. V. Pavlikov, М. С. Шебанов
Relaxation changes in polyacrylonitrile yarn during the heat-stretching process
Springer 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.
Weibull-Gnedenko Distribution Parameters for Mechanical Characteristics of Single Aramid Arn Filaments After Treatment with Low-Concentration Carbon Nanotube Suspension
Springer Science and Business Media LLC - Tập 54 - Trang 21-24 - 2022
M. S. Shebanov, V. G. Bova, L. B. Shiyanova, I. G. Kalinina
Weibull-Gnedenko distribution parameters for single filaments of copolymeric para-aramid fiber after treatment of its surface with a low-concentration aqueous suspension of oxidized carbon nanotubes are determined by nonparametric statistical methods. It is shown that the strength characteristics of original filaments and filaments treated with carbon nanotube suspension belong to the same general...... hiện toàn bộ
A mathematical model of the viscosity of dilute solutions of rigid-chain polymers
Springer Science and Business Media LLC - - 1985
T. A. Roven'kova, M. P. Babushkina, A. I. Koretskaya, L. V. Zhuravlev, G. I. Kudryavtsev
Intensification of thermooxidation of polyacrylonitrile fibres
Springer 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
Spinning collagen medicinal fibres in mineral salt solutions
Springer Science and Business Media LLC - Tập 21 - Trang 98-100 - 1989
L. M. Grishina, M. P. Vasil'ev, V. V. Kotetskii, L. A. Vol'f
The spinning of collage fibres should be carried out by the following regime: precipitating bath — an aqueous Na2SO4 solution having a concentration of 330–340 g/liter; its temperature should be 30–32°C, and the pH should be 10–11; the plasticization bath should be an aqueous Na2SO4 solution; its concentration is 220–225 g/liter; the temperature should be 32–36°C, and the pH should be 3.6–4.6; the...... hiện toàn bộ
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