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MECHANOCHEMICAL SYNTHESIS OF COMPOSITES FOR RADIATION PROTECTION MATERIALSстатья
- Авторы: Kovaleva S.A., Zhornik V.I., Vitiaz P.A., Kiseleva T.Yu, Grigoreva T.F., Vosmerikov S.V., Udalova T.A., Devyatkina E.T., Lyakhov N.Z.
- Сборник: Proceedings of 19th Israeli-Russian Bi-national Workshop "The optimization of composition, structure and properties of metals, oxides, composites, nano- and amorphous materials"
- Год издания: 2020
- Место издания: Ural Branch of Russian Academy of Sciences, 2020 Yekaterinburg
- Первая страница: 81
- Последняя страница: 90
- Аннотация: The structural changes of ultra−high molecular weight polyethylene (UHMWPE) modified with Fe/M inorganic mechanocomposites (M = TiC, HfC, TiB2, B4C) (70 wt.%) under conditions of intense plastic deformation in a planetary ball mill were studied using X−ray phase analysis and FTIR−spectroscopy. At short processing times, the molecular structure of the initial UHMWPE is not disturbed, and the change in the shape of the powder particles is associated with the segmental mobility of macromolecules. The introduction of inorganic mechanocomposites (fillers) into the polymer leads to the formation of an interfacial zone of polymer– filler with a branched polymer structure. The degree of crystallinity of mechanochemically obtained Fe/M/UHMWPE composites is reduced to 25 − 40 vol.%, compared to 44 vol.% for the original UHMWPE, depending on the nature of the filler. During mechanical processing of the polymer, oxidative degradation is not observed.
- Добавил в систему: Киселева Татьяна Юрьевна