Application of Organosilicon Modifier Based on Tetraethoxysilane for the Production of Heat-Resistant Chrysotile Fibers and Reinforced Cement Composites

This research is aimed at obtaining boron-containing nanotubular chrysotile fibers with increased neutron absorption capacity. The possibility of using an organosilicon modifier based on tetraethoxysilane to increase the hydrothermal stability chrysotile, as well strength nanoreinforced composites a cement binder considered. mechanisms for synthesis heat-resistant composition Mg6(OH)8SiB4O10, which have structure, been established. To crystalline hydrate phases were localized inside nanotubes amorphous silica formed result hydrolysis silicon alkoxide under conditions in alkaline environment. modification via increases its by 97 °C. It shown that introduction into Portland composite material leads structural and density due activation silicate formation processes matrix, especially conditions. experiments showed alkoxide-modified samples 34%.