VOL 91, No. 10 (2018)

The results of the development of powdered nanoporous glass (NPS) with a controlled pore size for solid-phase synthesis of oligonucleotides with an increased product yield are presented. By varying the parameters of thermal and chemical treatment of sodium-borosilicate glasses, an NPG with a narrow pore size distribution was obtained. It was found that the functional loading of the material was 72 ?mol / g. It was shown that the use of the developed NPS in the synthesis of long-chain oligonucleotides more than 7 times increases the product yield in comparison with similar material on the market.

Presented are the properties and graphical dependences of the properties of bismuth borate glasses in a wide range of compositions? molar content from 20 to 80 & # 37; Bi ₂ O ₃. In multi-bismuth glasses, both boron ions and bismuth ions are in two coordination states: В ³⁺ and В ⁴⁺, Bi ³⁺ and Bi ⁶⁺. The [BiO ³] groups play the role of a conditional glass former, but are weakly manifested in the IR spectra

Are the data of physical and chemical studies of flasks given? chemical, phase and granulometric composition, degree of crystallinity, as well as their thermal stability in the temperature range of 90 - 1000 ° C. An increased reactivity of silica in the studied flasks, a low degree of crystallinity and a high degree of dispersion of flasks are shown, which contributes to the activation of structural and chemical transformations in flasks during their heating.

The types and purpose of foam glass are considered, depending on the used blowing agents. Compositions with different granulometric composition of the charge have been developed, and heat treatment has been carried out. The influence of the fractional composition of the foam glass mixture on the density and volume of foam glass and foam glass materials has been studied.

Dense materials based on silicon carbide were obtained by liquid-phase sintering. The oxides MgO, Y ₂ O ₃ and Al ₂ O ₃, corresponding to the composition of yttrium-aluminum garnet, were used as a sintering additive. and a triple eutectic point on the line of spinel garnet binary cuts. The oxides were deposited on the surface of the powder by the SiC method of coprecipitation from a salt solution. The maximum density (& # 961; _rel = 99.5 & # 37;) is achieved on SiC materials including 20 & # 37; (mass content) of sintering additives of a three-component oxide mixture at a temperature of 1800 & # 176; С

The topics of the reports of the leaders and specialists of the world glass industry, representatives of research institutes and design organizations, independent experts will touch upon all aspects and directions of the modern glass industry:

• Increasing the efficiency of glassmaking: machinery, equipment, raw materials, refractories, furnaces. Problems and solutions.
• Technical capabilities to extend the life cycle of glass furnaces. Modern materials.
• Designing glass factories from scientific thought to project implementation.
• State support measures: Russian reality and world practice. Import substitution. Export.
• Design features, materials and equipment for industrial processing. Requirements. Expert opinions. Consumption development.
• Recycling. Prospects for the industrial production of raw materials based on cullet. Manufacturing.
• Technologies for packaging glass and products. Logistics. Management.
• Problems of using new types of glass products. Nanomaterials. Thermal insulation materials based on glass: foam glass, fiberglass materials.
• Environmental requirements. Scientific approach. Health security of the nation. Fight against counterfeit.
• New rules of foreign economic activity regulation in the EurAsEC environment.
• Problematic issues in the existing personnel training system.

The processes occurring in glass-ceramic solders of sapphire-niobium solders used as current leads into gas-discharge lamps with a discharge in alkali metal vapors have been studied. Based on the X-ray analysis of the phase composition and the study of microhardness, structural changes in glass-ceramic solder based on the system of oxides CaO-Al ₂ O ₃ and CaO-MgO-Al _{2 < / sub> O 3 when heated to 1600 & # 176; C and diffusion of niobium into the melt}

The results of the study of the chemical composition of ceramics of the medieval centers of ceramic production and modern ceramics of the Chui valley of Kyrgyzstan (the settlements of Krasnaya Rechka and Burana are included in the UNESCO World Heritage List) are considered in order to clarify the clay deposits that could have been used by medieval ceramists. The chemical composition of ceramics is determined by X-ray fluorescence with wave dispersion

Various designs of vibrating glass melt granulators are considered. The main advantages and disadvantages of such equipment used for recycling glass waste are stated. The design of a reversible vibration granulator is proposed and a diagram of its use in the recycling line of colored and colorless cullet formed in the production of glass containers with staining of glass melt in the feeder channel is presented.