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Preparation and Characteristics of Titanium Silicate Filler for Functional Materials

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Inorganic Materials: Applied Research Aims and scope

Abstract

During the interaction of titanite with hydrochloric acid, a composite titanosilicate precipitate (TSP) of the composition TiO2 ⋅ (1.1–1.15) SiO2 ⋅ (0.8–0.85) H2O consisting of two phases is isolated—crystalline titanium dioxide of rutile modification and silica. It has been found that, during high-temperature treatment (850°C), particles of the hydrated precipitate condense with an increase in crystallinity and a decrease in Ssp almost twofold compared to freshly precipitated TSP, without sintering of particles and formation of new phases. Particles of the resulting composition are agglomerates of fragments of a fairly regular shape, which is characteristic of crystalline particles of titanium dioxide, the surface of which is coated with an amorphous silica shell. The study of the samples using an electron microscope and a laser analyzer showed that 90% of the particles are represented by a fairly narrow fraction 0.4–1 μm in size. The morphological properties of the particles of the composition, as well as its technical characteristics, including the ability to give a matte surface to transparent organic dispersions, allow one to conclude the prospects of its use as an effective filler in the manufacture of adhesives and sealants with dielectric properties and increased heat resistance. In addition, such a filler may find application in the manufacture of other functional materials.

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Authors and Affiliations

  1. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center, Russian Academy of Sciences, 184209, Apatity, Russia

    L. G. Gerasimova, E. S. Shchukina, M. V. Maslova & Yu. G. Kiselev

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  1. L. G. Gerasimova
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  2. E. S. Shchukina
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  3. M. V. Maslova
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  4. Yu. G. Kiselev
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Correspondence to L. G. Gerasimova.

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Translated by Sh. Galyaltdinov

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Gerasimova, L.G., Shchukina, E.S., Maslova, M.V. et al. Preparation and Characteristics of Titanium Silicate Filler for Functional Materials. Inorg. Mater. Appl. Res. 11, 903–907 (2020). https://doi.org/10.1134/S2075113320040103

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  • DOI: https://doi.org/10.1134/S2075113320040103

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