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 S_sp 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.

中文翻译：

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功能材料用硅酸钛填料的制备及性能

摘要

期间榍的用盐酸的相互作用，该组合物的复合物钛硅酸盐沉淀物（TSP）的TiO ₂ ⋅（1.1-1.15）的SiO ₂ ⋅（0.8-0.85）H ₂ ö由两个相的分离结晶钛金红石氧化钛改性和二氧化硅。已经发现，在高温处理（850℃）期间，水合沉淀物的颗粒凝结而结晶度增加而S _sp降低。与新沉淀的TSP相比，几乎是原来的两倍，而没有烧结颗粒和形成新相。所得组合物的颗粒是相当规则形状的碎片的附聚物，其是二氧化钛的结晶颗粒的特征，其表面被无定形二氧化硅壳覆盖。使用电子显微镜和激光分析仪对样品进行的研究表明，90％的颗粒由0.4-1μm的较窄部分所代表。组合物颗粒的形态学特性及其技术特征，包括使透明有机分散体具有粗糙表面的能力，允许人们总结其在制造具有介电性能和提高的耐热性的胶粘剂和密封剂中用作有效填料的前景。另外，这种填料可以发现在其他功能材料的制造中的应用。