Review of the results of ph.D. Theses in the area of nanotechnologies and nanomaterials.Part 4

To popularize scientific achievements the main results of Russian and foreign scientists' research are published in the form of abstract. The research «Materials of autoclave hardening with the use of nanostructured modifier based on magnetic rock of acid content» set the theory and experimentally proves the opportunity to use magma rock of acid composition for production of nanostructured modifier of the materials of autoclave hardening. Activity of nanostructured modifier is provided by its composition and production technology: high specific surface with formation of nanodispersed polymineral; surface amorphization of rock-forming minerals; processes of mechanical and chemical dissolution of quartz and feldspar components with formation of active silica and alumina silica acids. The research has determined the character of the influence of nanostructured modifier in the sand blend on the gas formation, expansion of concrete mix and finally on the structure formation of the materials during preautoclave period. The authors proposed the compositions for the materials of autoclave hardening with the use of nanostructured modifier made of granite to produce: pressed articles (silicate brick) of density 1835-1950 kg/m 2, ultimate compressive strength - 17,8-23,3 MPa, thermal conductivity - 0,56-0,6 W/m°C., frost resistance - 40-55 cycles, water absorption - 11,4-12,2%. The developed articles meet the requirements of the existing codes: strength grade М150-М200 and frost resistance grade F35-F50. The specialists may be also interested in the following research: «Physical and chemical properties and structure of monomeric and polymer acetylenecarboxylated metals and nanocomposites based on them», «Nanomodified sulphuric binders for the construction materials of general and specific purpose», «Synthesis and catalytic properties of mesoporous nanomaterials based on СеО 2», «Synthesis and properties of nanostructures based on laminar double hydroxides», «Sol-gel synthesis and properties of nanocrystal ferrites based on system Y 2O 3-Fe 2O 3», «Synthesis and physical and chemical objective laws of sol-gel formation by the method of thin-film and dispersed nanomaterials of oxide systems of elements III-IV groups», «Synthesis and research of functional properties of low dimension nanostructures on the basis of titanium and vanadium oxides», «The reaserch of interaction between electromagnetic radiation and nanostructured materials», Formation, structure and optical properties of nanocomposite systems «Ge in porous matrix Al 2O 3», «Polymer construction nanocomposites on the basis of polyvinylchloride», «Objective laws of formation, structure features and properties of superhard nanocomposite coatings» et al.