Nano-technology (B82)

B82            Nano-technology(3676)
ethod of obtaining copper - graphen composite // 2642800
FIELD: chemistry.SUBSTANCE: water-alcohol solution of copper sulfate is prepared, ethyl alcohol is added to it to a concentration of 37.5-42.5 ml/l, acidified to pH of 1-2 and divided into two parts. A suspension is prepared from one part, in which graphite-graphene mixture is added in an amount of 0.05-0.5 g/l and surfactants Pluronic F-127 or polyacrylic acid in an amount of 25-100 ppm, dispersed for 15-20 min. The electrochemical deposition cell is assembled, placed in a copper solution and the working voltage is fed for 20-30 minutes. Then the two-electrode cell is moved to the obtained graphene-containing suspension with surfactants and the working voltage is fed to the electrodes for 120-180 min. After the specified aging in the solutions, the electrodes are dried, and the resulting composite "copper-graphene" is separated, which has a high uniformity and crystallinity, a small crystallite size, a uniform distribution of graphene in the matrix.EFFECT: increase of the material microhardness.1 cl

ethod of multi-stage treatment of injection well bottomhole zone in terrigenous and carbonate formations // 2642738
FIELD: oil and gas industry.SUBSTANCE: method of multi-stage treatment of injection well bottomhole zone in terrigenous and carbonate formations includes hydrochloric acid treatment with acid composition of 0.5-1m3/m volume followed by pressing with aqueous solution of colloidal silicon dioxide nanoparticles or aqueous solution of surface-active substance of 2-3 m3/m volume; clay-acid treatment with clay-acid composition based on hydrochloric and hydrofluoric acids with 0.8 0.5 m3/m volume followed by pressing with aqueous solution of colloidal silicon dioxide nanoparticles or an aqueous solution of surface-active substance of 2-3 m3/m volume, treatment with hydrocarbon solvent of 0.5 m3/m volume and with clay-acid composition based on hydrochloric and hydrofluoric acids with 0.5 m3/m volume then by spraying aqueous solution of colloidal silicon dioxide nanoparticles or aqueous solution of surface-active substance of 2-3 m3/m volume. The following composition is used as acid composition, vol %: 30% hydrochloric acid 50-63; diethylene glycol 6-16; acetic acid 1-3; water-repellent agent based on amides, 1-3; corrosion inhibitor, 1.5-2; the rest is process water. The following composition is used as the clay-acid composition, vol %: 30% hydrochloric acid 48-60; hydrofluoric acid 1-4; diethylene glycol 6-16; acetic acid 1-3; water-repellent agent based on amides, 1-3; corrosion inhibitor, 1.5-2; the rest is process water. As aqueous solution of colloidal silicon dioxide nanoparticles, 1-2%- aqueous solution of colloidal silicon dioxide nanoparticles is used, containing wt %: colloidal silicon dioxide in acrylic acid, 32-40; propylene glycol monomethyl ether, 59.5-67.5; the rest is water. Aqueous solution of surface-active substance is 2-4% aqueous solution of surface-active substance containing, wt %: diethylene glycol, 1-3; hydrophobic agent based on amides, 0.5-2; the rest is process water. Solvent based on toluene fraction of straight-run gasoline or based on an aromatic hydrocarbon concentrateC10 is used a hydrocarbon solvent.EFFECT: increased efficiency injection wells, reduced time for implementation of the method, its simplification and reduced cost.2 cl, 7 dwg
ethod of producing silicon carbide // 2642660
FIELD: chemistry.SUBSTANCE: silicon carbide is obtained from a charge comprising nanopowder of silicon-containing (SiO, SiO2, H2SiO3) carbon-containing (a carbohydrate of the general formula Cn(H2O)m, where n ≥12; m=n-1, a polyhydric alcohol of the general formula CnH2n+2On, where n≥2, aldehyde or ketone derivatives of polyhydric alcohols of the general formula (CH2O)n, where n≥3, components, prepared in deionized water, with the subsequent stepwise heating in three stages: up to a temperature of 145-195°C with the maintaining for 1.5-3 hours, up to 800-1000°C, with the maintaining for 0.4-1 h, and up to 1450-1650°C, with the maintaining for 1-1.5 hours.EFFECT: increasing the purification degree and the yield product of the order of 80-85% 3 etc.3 ex
ethod for producing water dispersion of carbon nanoparticles from shungit // 2642632
FIELD: chemistry.SUBSTANCE: first the shungite rock is chopped. The obtained shungite powder is poured with water at a ratio of the weight of the shungite powder to the mass of water of 1: 2 and left to stand for three days, after which it is filtered. The remaining powder of shungite is dried and dispersed in water using grinding bodies with a diameter of 1-3 mm at a ratio of the mass of the shungite powder to the mass of water and the mass of grinding bodies 1: 4: 3 for 60 minutes. Then the mixture is filtered, the shungite powder is dried. Then dispersing and filtering the shungite powder is carried out in water by ultrasound in the ratio of the mass of the shungite powder to the mass of water 1:20, a frequency of 22 kHz and power of 1000 W for 35 minutes. The resulting water dispersion of carbon nanoparticles is centrifuged for 15 minutes at 10000 rpm.EFFECT: increasing the stability of water dispersion of carbon nanoparticles during storage.2 tbl

Adhesive composition for manufacturing chipboards and wood products // 2642568
FIELD: chemistry.SUBSTANCE: adhesive composition contains components with the following ratio, wt %: binder urea-formaldehyde resin (97.41-98.36), a curing agent of ammonium chloride (0.64 to 1.59), an amorphous modifier of silicon dioxide (0.05-1.00). Silicon dioxide is presented in the form of a powder with nanoporous structure of particles and their specific surface of 120 to 400 m2/g.EFFECT: increasing the strength of the adhesive composition and reducing the consumption of the modifier.2 dwg, 1 tbl

ethod to determine hydrogen concentration in palladium nanoparticles // 2642539
FIELD: measuring equipment.SUBSTANCE: X-ray absorption spectrum is measured by k-edge of palladium in the range 24320±10-24440±20 eV, the value of absorption coefficient is determined at the points of the first two maximums and the concentration of hydrogen C is calculated by the formula , where μA is the value of the absorption coefficient at the point of the first edge maximum, whereμB is absorbance at the point of the second edge peak, k1=0.903±0.001, k2=0.0320±0.0003.EFFECT: simplified processing of x-ray absorption spectra, as well as reduced measurement time.2 cl, 6 dwg

ethod of producing l-arginine nanocapsules // 2642233
FIELD: nanotechnologies.SUBSTANCE: invention relates to nanotechnology, namely to the method of producing L-arginine nanocapsules in sodium carboxymethyl cellulose. Method is characterized in that L-arginine is slowly added to the suspension of sodium carboxymethyl cellulose in methanol in the presence of 1 % of E472c preparation as a surfactant with stirring at 1,000 rpm, then 10 ml of petroleum ether is added, obtained suspension is filtered and dried at room temperature, the core/shell weight ratio being 1:1 or 1:3, or 5:1. Method ensures the simplification and acceleration of the process of producing nanocapsules, reduction in losses in the production of nanocapsules, and can be used in the food industry.EFFECT: method ensures the simplification and acceleration of the process of producing nanocapsules, reduction in losses in the production of nanocapsules, and can be used in the food industry.1 cl, 2 dwg, 4 ex

ethod of producing aecol nanocapsules // 2642232
FIELD: nanotechnologies.SUBSTANCE: invention relates to nanotechnology, particularly to method of producing AECOL nanocapsules in a xanthan envelope. Method is characterized in that AECOL is added to a suspension of xanthan gum in benzene in the presence of 0.01 g of E472c as a surfactant,then it is mixed at 1300 rpm, after 10 ml of carbon tetrachloride are added, after which obtained suspension is filtered and dried at room temperature, ratio of nucleus/shell is 1:1, or 1:3 or 3:1 or 1:5.EFFECT: method ensures the simplification and acceleration of the process of producing nanocapsules, reduction in losses in the production of nanocapsules, and can be used in the pharmaceutical and food industries.1 cl, 1 dwg, 5 ex
ethod of producing nanocapsules of dihydroquercetin in carrageenan // 2642230
FIELD: nanotechnologies.SUBSTANCE: invention relates to nanotechnology. Method for preparing nanocapsules of quercetin or dihydroquercetin in a coat of carrageenan is described. According to this method, quercetin or dihydroquercetin is added to a suspension of carrageenan in benzene in presence of 0.01 g of E472c as surfactant with stirring at 1000 rpm. Then, petroleum ether is added. Obtained suspension of nanocapsules is filtered off and dried at room temperature. Mass ratio of the core: the shell is 1:3 or 1:1.EFFECT: method provides simple and fast process of producing nanocapsules and increases mass output.1 cl, 2 dwg, 4 ex

ethod for preparing metal iron nanoparticles // 2642220
FIELD: nanotechnology.SUBSTANCE: invention relates to the preparing of metal iron nanoparticles from aqueous sol based on ferrihydrite nanoparticles and can be used in medicine. Aqueous sol based on ferrihydrite nanoparticles obtained as a result of cultivation of Klebsiella oxytoca bacteria isolated from the sapropel of Lake Borovoe of the Krasnoyarsk Territory is treated in cavitation mode for 4-24 min on an apparatus of the Volna series UZTA-0.4/22-OM with ultrasonic treatment intensity >10 W/cm2 and a frequency of 22 kHz. The metal is reduced as a precipitate of metal nanoparticles of iron, which are then separated and dried.EFFECT: ferromagnetic iron nanoparticles have a volume-centred cubic package.2 dwg,1 tbl

ethod of obtaining nanostructured gas sensor for ozone // 2642158
FIELD: measuring equipment.SUBSTANCE: invention relates to technology for producing high-sensitivity resistive gas sensor for ozone based on oxide films in the system In2O3 – SnO2. Method for obtaining a nanostructured gas sensor for ozone involves the joint crystallization of salt solutions or their coprecipitation, in this case, solutions of precursor salts are used as initial reagents (SnSO4, In(NO3)3*xH2O), oxide powders are obtained by the sol-gel method of co-crystallization and coprecipitation, after which the resulting powders are calcined at 120–400 °C and fired at 650 °C to obtain a solid solution based on In2O3 with the size of NPD ~ 27–29 nm, then a paste with an ethylcellulose-based binder [C6H7O2(OH)3-x(OC2H5)x]n and turpentine are made, and in the first series 10 % by weight of ethylcellulose and 5 ml of turpentine are added to the sample of the powder, and for the second series, the powder is mixed with 30 % by weight of ethylcellulose and 8 ml of turpentine, then, after vigorous stirring the resulting paste is applied to corundum substrates by screen printing, after which the samples are fired at 700 °C for 5 hours in the first stage and then at 1,100 °C for 3 hours.EFFECT: technical result is an increase in the sensitivity of the sensor.1 cl, 3 dwg

Optoelectronic device // 2642132
FIELD: physics.SUBSTANCE: optoelectronic device contains an emitter and a photodetector positioned in one plane at a certain distance from each other, ohmic contacts, wherein the emitter and the photodetector are made of consistently grown heteroepitaxial layers of dielectric and nanocrystalline silicon in the silicon substrate, and each silicon layer consists of p- and n-type sections with the sharp section borders.EFFECT: optoelectronic device according to the invention has a monolithic and small-sized structure, more reliable and less expensive.3 dwg

Terahertz-infrared converter for visualization of sources of terahertz radiation // 2642119
FIELD: physics.SUBSTANCE: converter consists of a base and transducers of terahertz radiation into infrared radiation. The base is made in the form of a matrix, transparent in the terahertz and infrared ranges of frequencies. Transducers are evenly distributed in the volume of the matrix and are made in the form of gold nanoparticles. The diameter of gold nanoparticles is determined by the formula D≈[(8/π)⋅(mAu/ρ)⋅(EF/hν)]1/3, where D is a diameter of gold nanoparticles, mAu - a mass of the gold atom, ρ - a density of gold, EF - Fermi energy of gold, hν - a photon energy of terahertz radiation.EFFECT: increasing the conversion efficiency and sensitivity of the device.2 cl, 3 dwg, 2 tbl
ethod of ice-cream production with nanostructured extract of echinacea // 2642100
FIELD: food industry.SUBSTANCE: method for producing ice cream with an extract of echinacea is proposed. In the manufacturing process, a nanostructured additive is introduced into the resulting product, including an extract of echinacea in sodium alginate, at the rate of 1.5 g of nanostructured additive per 1,000 g of finished ice cream.EFFECT: invention allows to produce ice cream with specific organoleptic properties, enriched with biologically active substances of plant raw materials, without foreign smells and flavors.1 cl, 2 ex
ethod of ice-cream production with nanostructured betulin // 2642099
FIELD: food industry.SUBSTANCE: method for producing ice cream containing betulin is offered. In the manufacturing process, a nanostructured additive is introduced, including betulin in sodium alginate, based on 2 g of nanostructured betulin per 1,000 g of ice cream.EFFECT: invention makes it possible to obtain ice cream without foreign smells and flavors, enriched with biologically active substances of vegetable origin.1 cl, 3 ex
ethod for ice-cream production with nanostructured girasol // 2642098
FIELD: food industry.SUBSTANCE: method for producing ice cream containing girasol is offered. In the manufacturing process, a nanostructured additive is introduced into the resulting product, including girasol in high- or low-esterified apple or citrus pectin, based on 2 g of nanostructured additive per 1000 g of finished ice cream.EFFECT: invention makes it possible to obtain ice cream without foreign smells and flavors and enriched with biologically active substances of vegetable origin.1 cl, 12 ex
ethod of ice-cream production with nanostructured extract of dry hedge rose // 2642093
FIELD: food industry.SUBSTANCE: method for producing ice cream enriched with dry hedge rose extract is offered. In the manufacturing process, a nanostructured additive is introduced into the resulting product, including dry hedge rose extract in sodium alginate, based on 2 g of nanostructured additive per 1,000 g of finished ice cream.EFFECT: invention makes it possible to obtain ice cream without foreign smells and flavors, enriched with biologically active substances of vegetable origin.1 cl, 1 ex
ethod of producing nanocapsules of herbs having cardioactive action in pectin // 2642056
FIELD: pharmaceuticals.SUBSTANCE: invention refers to pharmaceutics, it relates to the method for producing nanocapsules of medicinal plants with cardiotonic effect, characterized by, that as a nanocapsule shell, high or low-esterified pectin is used, and as a core, hawthorn tincture, and the hawthorn tincture is added to a suspension of high- or low-esterified apple or citrus pectin in hexane in the presence of 0.01 g of E472c preparation as a surfactant while mixing at 1300 rpm, obtained suspension is filtered and dried at room temperature, weight ratio nucleus/shell is 1:3.EFFECT: invention allows to simplify and accelerate the process of producing nanocapsules and increase the output by mass.1 cl, 4 ex

ethod of producing medicinal plants nanocapsules with cardiotonic effect // 2642054
FIELD: nanotechnologies.SUBSTANCE: invention relates to the field of nanotechnology, in particular to a process for producing nanocapsules, and describes a method of producing medicinal plants nanocapsules with cardiotonic effect, which is characterized by the fact that hawthorn tincture is added to a suspension of xanthan gum in toluene, in the presence of 0.01 g of E472c preparation as a surfactant while mixing at 1300 rpm, the obtained suspension is filtered and dried at room temperature.EFFECT: method ensures the simplification and acceleration of the process of producing nanocapsules, reduction in losses in the production of nanocapsules, and can be used in the pharmaceutical and food industries.1 cl, 1 dwg, 4 ex
ethod for detecting microbial and viral contamination of solutions and biological fluids // 2641960
FIELD: medicine.SUBSTANCE: invention refers to microbiology, namely to a method for detecting a contamination of solutions and biological fluids. Substance of the method consists in detecting the biological objects containing microorganisms or viruses by means of metal nanoparticles formed in situ from respective metal salts introduced into the analysed object, and analysing the dynamics of spectral characteristics of the forming nanoparticles. In the presence of microbial cells for the period of 20-40 minutes, the size of the forming metal nanoparticles reaches more than 15 nm; in the presence of viruses, the size of the forming nanoparticle reaches 6 nm, whereas the absence of any contamination of the analysed objects is shown by the size of the forming nanoparticle nuclei not exceeding 2 nm.EFFECT: using the declared method enables the highly sensitive, reliable, technically simple and fast detection of the microbial contamination of solutions and biological fluids.4 dwg, 3 ex

ethod for obtaining nanocarbon // 2641829
FIELD: nanotechnology.SUBSTANCE: method comprises supplying into the reaction chamber made in the form of a trunk, which is periodically closed at one end and opened at the other end, on the side of the closed end through a system of fast-acting valves and a mixer tap in the flowing mode of clean acetylene or with addition of oxygen, and then easily detonating acetylene-oxygen mixture, initiating detonation at the closed end of the chamber and after passing a detonation wave forming nanocarbon as a result of the detonative decomposition of the acetylene, wherein at the end of the cycle of nanocarbon production blowing the trunk with a gaseous hydrocarbon with a general formula CnH2n+2 or CnH2n, implementing frequency repetition of cycles in an automatic mode, and the obtained nanocarbon is collected in the manifold.EFFECT: obtaining nanocarbon of the required degree of purity by a high-productive method with increased efficiency of raw material use and explosion safety.2 dwg, 1 tbl, 1 ex
High-strength fine grain concrete // 2641813
FIELD: construction.SUBSTANCE: mixture for modified concrete containing portland cement, sand, nanosilica sol, white carbon, superplasticizer and water, characterized in that as a superplasticizer, a Linamix PK additive is used, with the following ratio of components wt %: sand: 66.3-67.8, portland cement 22-22.5, water 5.8-6.1, Linamix PK 3.38-3.45, microsilica 0.225-3, nanosilica sol 0.084-0.351, white carbon 0.045-0.158.EFFECT: obtaining a mixture for modified concrete of the brand by mobility P2 with a minimum consumption of cement.4 tbl
ethod for producing nanocrystalline powder of molybdenum oxycarbide // 2641737
FIELD: chemistry.SUBSTANCE: method of producing nanocrystalline powder of molybdenum oxycarbide includes evaporation of oxygen-containing compounds of molybdenum at a high temperature in an atmosphere containing an inert gas, followed by the condensation upon cooling. The powder of molybdenum trioxide is used as the oxygen-containing molybdenum compound, the evaporation is carried out in the presence of urea taken in the ratio of molybdenum trioxide: urea = 1:1, in terms of the plasma precondensation in the low-temperature nitrogen plasma at a temperature of 4000÷6000°C with the power of the plasma torch 2.4÷3.6 kWh at a flow rate of plasma 50÷55 m/s and a feed rate of powder of 150-200 g/h, and cooling is carried out in a stream of nitrogen, followed by the vortex cycloning and capture on the fabric filter.EFFECT: invention makes it possible to obtain molybdenum oxycarbide with a structure of the NaCl type without foreign impurities with a particle size of not more than 30 nm in an environmentally safe manner.2 ex, 2 dwg
Ultrafast and ultrasensitive hybrid superconducting waveguide single-photon detector with low dark count rate // 2641621
FIELD: physics.SUBSTANCE: ultrafast and ultrasensitive hybrid superconducting waveguide single-photon detector with a low dark count rate includes a sensitive nanowire from a superconducting NbN film located on a nanowave guide Si3N4, and a protective dielectric-metallic coating consisting of an SiO2 dielectric layer and a layer of Al metal deposited over the nanowire.EFFECT: providing the possibility of reducing false triggering of a superconducting single-photon waveguide detector and increasing the sensitivity of the superconducting single-photon waveguide detector.3 dwg
ethod of obtaining suspension on polymer basis with high-dispersed metal particles for manufacture of polymeric matrices filled with related particles // 2641591
FIELD: chemistry.SUBSTANCE: method comprises obtaining finely dispersed particles by spraying metal placed on a tungsten evaporator, then introducing the said particles into a polymer liquid by spraying with a gas stream and passing the said particles through a diaphragm above the liquid surface in a chamber in a gas medium with a controlled pressure, and mixing the introduced particles in a polymeric liquid, adjusting its pressure and temperature to obtain a slurry.EFFECT: obtaining a suspension with particles of controlled size from nanometre to atomic.1 dwg, 5 ex
ethod for obtaining nanosized fisher-tropsh synthesis catalyst and method of fisher-tropsh synthesis with its application // 2641299
FIELD: chemistry.SUBSTANCE: method for obtaining a nanosized catalyst of the three-phase Fischer-Tropsch synthesis comprising catalytically active iron nanoparticles involves dissolving the precursors - iron and potassium salts, in water, introducing the resulting solution into molten paraffin at a rate of 20-60 ml/h, forming the catalyst in situ directly in the reaction zone during the heat treatment of the catalyst components in an inert gas stream at a temperature higher than the decomposition temperature of the catalyst precursors and cooling for 1-6 hours in an inert current gas. The heat treatment time is not more than 15 minutes. The ratio of the catalyst components is, wt %: Fe - 0.5-1.0, K - 0.01-0.02, paraffin - the rest. Three-phase Fischer-Tropsch synthesis method includes obtaining aliphatic hydrocarbons from carbon oxide and hydrogen in the three-phase flowing slurry-reactor at an elevated temperature and a pressure in the presence of nanosized catalyst with a particle size of 0.7 to 4 nm, obtained in this way, when the molar ratio of carbon monoxide and hydrogen of 1:(0.5-3), a temperature of 240-400°C, a pressure of 20-30 ATM with the load on gas from 2 to 20 nl/hCatc⋅.EFFECT: when using the proposed composition and method of preparing a Fe-containing catalyst, a sharp increase in its activity is observed, as a result of which high process values can be achieved in smaller reactors, lower iron and potassium content in the catalyst, and a reduction in the heat treatment time, preventing of coarsening and agglomeration of the catalyst particles, higher catalyst productivity, higher selectivity for the formation of hydrocarbons.2 cl, 4 dwg, 1 tbl, 4 ex
ethod for producing blank of ti49,3ni50,7 nanostructured alloy with shape memory effect // 2641207
FIELD: metallurgy.SUBSTANCE: method for producing a blank of Ti49, 3Ni50, 7 nanostructured alloy with shape memory effect includes uniform angular pressing with accumulated degree of deformation more than 4 in the temperature range 300-550°C, plastic deformation and annealing. The blank produced after ECAP is enclosed in steel shell, and plastic deformation is carried out by free upsetting to degree of not less than 30% in temperature range of 20-300°C, then the blank is removed from the shell, and annealing is carried out at temperature T = 200-400°C.EFFECT: enhanced mechanical properties and functional characteristics with the necessary cross-section of blanks.1 tbl, 2 ex
ethod of producing bismuth ferrite nanopowder // 2641203
FIELD: chemistry.SUBSTANCE: invention relates to the production of a single-phase nanocrystalline bismuth ferrite powder BiFeO3 with ferromagnetic properties. The method comprises mixing bismuth nitrates Bi (NO3)3, iron nitrates Fe (NO3)3, glycerol, and water to form a solution, evaporating the resulting solution to form a gel and heating it to the flash point to form a powder. Mentioned bismuth nitrates and iron nitrates are used in the calculated amount required for obtaining bismuth ferrite, and glycine - in the amount of 35-50% less than the estimated amount. Evaporation of the resulting solution and heating to the temperature of the gel formed are performed at continuous mixing, and powder produced after flash is heated to 350-400°C over a period of time up to 30 min.EFFECT: obtaining a pure powder uniform in dispersion.8 dwg, 4 ex
ethod for producing nanocapsules of dry extract of topinambur // 2641190
FIELD: nanotechnology.SUBSTANCE: method for obtaining nanocapsules of a dry extract of Jerusalem artichoke in a shell of pectin is described. As a nanocapsule, a low-esterified and highly esterified apple and citrus pectin is used, as a core - a dry extract of Jerusalem artichoke. Nanocapsules are prepared by mixing a mixture of pectin in toluene with 0.01 g of E472c as a surfactant, then adding a dry extract of Jerusalem artichoke into the mixture, precipitating with diethyl ether, followed by filtering out the resulting suspension and drying the nanocapsules. Mass ratio in nanocapsules core: shell is 1:3 or 5:1. The process of obtaining nanocapsules is carried out at 25°C for 15 minutes.EFFECT: simplification and acceleration of the nanocapsules production process and increase in yield by weight.4 dwg, 9 ex

ethod of betulin nanocapsules production // 2641188
FIELD: nanotechnology.SUBSTANCE: method for preparing betulin nanocapsules in a shell of xanthan gum is described. In the process, the betulin powder is added to a suspension of xanthan gum in isopropanol in the presence of 0.01 g E472c as a surfactant with stirring at 1300 rpm. Then butyl chloride is added. The resulting suspension is filtered and dried at the room temperature. The core shell ratio is 1:1 or 1:3.EFFECT: simplification and acceleration of the nanocapsules production process and increase in yield by weight.1 dwg, 3 ex
ulti-layer antifouling coating // 2641130
FIELD: chemistry.SUBSTANCE: coating is described, comprising a primer layer, an intermediate layer based on an epoxy resin and an amine type hardener, and an external self-polishing biocidal layer, in which an epoxy resin modified with a coal tar containing (wt %) is used as a base in the primer and intermediate layers: phenols 8-18, paraffins and olefins 4-12, neutral oxygen compounds 20-30, carboxylic acids 1-2, pyridine bases 1-3, aromatic hydrocarbons 22-34, and a water-soluble solvent, solvating power is not less than that of water, red iron oxide is further introduced into the intermediate layer and the outer self-polishing layer is based on copper acrylate with the addition of nano-dispersed low molecular weight polytetrafluoroethylene.EFFECT: increased effectiveness of protection against fouling of concrete and reinforced concrete surfaces, operated in fresh and sea water.4 tbl
ethod for forming composite for obtaining electrode material of devices emerging electric energy // 2641118
FIELD: chemistry.SUBSTANCE: in the flow reactor the treatment temperature is set in the range (500-900)°C, including the indicated values, ensuring the decomposition of the carbon precursor and the deposition of carbon into template uniformly distributed in the precursor preliminarily prepared by passing the inert gas flow. Then the flow of a gaseous mixture is fed from the gas-reducing agent and the carbon precursor, precipitating carbon on template and forming a graphene layer, the thickness of which is equal to 1-2 monolayers or more, is selected based on the conditions of participation of the total volume of graphene in the formation of the electrical double layer in the interaction with the electrolyte. A powder of nanoscale metal oxide particles of the second group with a transverse size of 100 nm or less is used as an inorganic template. Ready-made template can be used or produced from a precursor when preheating and when passing an inert gas stream before setting the above temperature in the reactor. Hydrocarbon of a number of alkanes, or alkenes, or alkadienes is used as a carbon precursor. Carbon deposition and graphene formation are carried out for 2-60 minutes, including the indicated values, after which the supply of the gaseous mixture is stopped and the reactor is cooled to room temperature while passing the inert gas. Argon or nitrogen is used as an inert gas at all stages. The choice of graphene thickness is combined with the choice of the specific surface of template in the range (500-1000) m2/g, including the indicated values.EFFECT: increasing the amount of stored energy per unit of weight, discharging rate, charging, prolongation of stability during the charging cycles, discharging.22 cl, 1 dwg, 5 ex

ethod of obtaining supramolecular hydrogel // 2641111
FIELD: chemistry.SUBSTANCE: method of obtaining supramolecular hydrogels includes mixing an aqueous solution of L-cysteine with the silver acetate aqueous solution so that the concentration of L-cysteine in the mixture is in the range of 1.0 to 6.0 mmol, and the ratio of molar concentrations of silver acetate to L-cysteine in the mixture is in the range of 1.23 to 1.33, where the mixture is left in a dark place at room temperature for 4 hours for the formation of the L-cysteine-silver solution. Then, the mature L-cysteine-silver solution is mixed with an aqueous solution of sulfate with a cation from the series Na+, K+, Cu2+, Fe2+, Mg2+, Zn2+, Al3+, Ni2+, Co2+, Mn2+ at a concentration of sulfate in the mixture in the range of 0.075-0.750 mmol, after a certain time, depending on the concentration of sulphate and the type of cation, after which the liquid system becomes a gel.EFFECT: improved method.2 tbl, 6 dwg

Polymeric compound and its application in photovoltaic devices // 2641103
FIELD: chemistry.SUBSTANCE: polymeric compound has the general formula (I), where n is an integer from 2 to 2000 and represents the number of repeating monomer units in the polymeric chains, which may be identical or differentR1, R2, R3, R4 represent the hydrogen atom; R5, R6 are the same or differ from each other and represent an alkyl group C1-C20; X represents a group , where Y=N-R7, or CR8R9, or SiR8R9, where R7, R8, R9 are the same or differ from each other and represent an alkyl group C1-C20, EG-1 and EG-2-end groups of the polymeric compound, which are not dependent on each other and represent an atom of hydrogen, halogen, trialkyl-stannyl (-Sn(Alkyl)3), a residue of boric acid (-B(OH)2), ester of boric acid (-B(OAlkyl)2), aryl or heteroaryl fragment. The composition contains, at least, one polymeric compound of formula (I) and, at least, one material selected from the group consisting of a hole-transport material, an electron-acceptor material, an electron-transport material, and a light-absorbing material. In the second version, the composition contains, at least, one polymeric compound of formula (I) and, at least, one fullerene compound. The method of producing polymers of formula (I) is that a polycondensation reaction of Stille or Suzuki is carried out to bind the starting monomers together to form a conjugated polymer. Polymers of formula (I) are used in the manufacture of photovoltaic converting devices, preferably solar cells, solar panels of solar modules, and optical sensors.EFFECT: polymer with optimal electronic properties, has a width of forbidden zone of 1,2 -1,7 EV, which can be used in the manufacture of photovoltaic converting devices with higher efficacies of photoelectric light transformation.16 cl, 9 dwg, 1 tbl, 8 ex
ethod of manufacturing multi-electrode gas-analytical chip based on titanium dioxide nanotube membranes // 2641017
FIELD: chemistry.SUBSTANCE: method of manufacturing multi-electrode gas-analytical chip based on titanium dioxide nanotube membranes include formation of ordered array of nanotubes TiO2 from titanium by electrochemical anodization in fluoride electrolyte with the consequent dissolution of the titanium substrate in methyl alcohol with the addition of bromine, and washing the resulting membrane in alcohols and drawing it from the solution to the chip substrate surface on which the strip electrodes are formed (or were preformed earlier) to enable electrical measurements of resistances of the membrane sites. In the operation the chip is exposed to the gas environment, the resistance change in segments of titanium dioxide nanotube membrane is recorded, placed between each pair of the strip electrodes, and the vector signal is treated from the entire set of segments by methods of pattern recognition to determine the gas composition.EFFECT: producing a highly sensitive and gas-selective multi-electrode gas analyzer chip in a simple method with a low cost.5 cl, 9 dwg
ethod for obtaining of coloured textile materials processed by silver cations hydrosole, with complex of light-stabilizing, antimicrobial and antitoxic properties // 2640925
FIELD: medicine.SUBSTANCE: method for obtaining of coloured woven and nonwoven textile materials containing synthetic fibers or mixtures thereof comprising sequential production of an aqueous formulation of a modifying preparation comprising silver cations, an emulsifier, a silver cation reducing agent from the group of organic food acids, and a stabiliser from the high molecular weight hydroxyl-containing polymer group; and its application to the coloured surface of textile materials by impregnation.EFFECT: obtaining of coloured woven and non-woven textile materials containing synthetic fibers or mixtures thereof with a complex of light stabilizing, antimicrobial and antitoxic properties by improving the quality of preparation of the aqueous formulation of the modifying preparation with predetermined parameters of its physicochemical properties and controlling the concentration of the stabilized silver cations hydrosole composition when applied to the coloured surface of textile materials.2 cl, 9 tbl, 2 ex

Intensive steam condenser with contrast and gradient wetting // 2640888
FIELD: heating system.SUBSTANCE: intensive steam condenser with a contrast and gradient wetting is made in the form of a cooled cylinder, on the outer surface of which alternating transverse annular strips with hydrophobic coating with a gradient wetting angle and strips with hydrophilic coating are applied. Moreover, the wetting angle of the surface with the hydrophobic coating decreases from the line of the maximum value of the wetting angle to the line of the minimum value of the wetting angle.EFFECT: invention allows to increase the intensity of condensation due to the application of special coatings with gradient wetting, and due to the reduction in the hydraulic resistance during the flow of a two-phase flow along the condensation surface.3 dwg

ethod for obtaining modified photocatalyst based on titanium dioxide // 2640811
FIELD: chemistry.SUBSTANCE: method of obtaining a modified photocatalyst based on titanium dioxide for the photocatalytic air purification, consisting in the fact that the nanocrystalline powder of titanium dioxide in the anatase modification with a specific surface area above 300 m2/g is subjected to treatment with an aqueous solution of the fluorine-containing agent in a molar ratio of fluorinated agent and titanium dioxide of 0.09-0.11:1 with the subsequent processing of the slurry with a mineral acid to achieve pH=4-4.5.EFFECT: obtaining a highly active photocatalyst, allowing to reduce the time required in the purification of air from volatile organic compounds and intermediates of incomplete oxidation in the course of photocatalysis, 2 or more times by increasing the speed of photocatalytic oxidation.4 cl, 1 tbl, 10 ex

Polymeric compound and its application in photovoltatic devices // 2640810
FIELD: chemistry.SUBSTANCE: invention relates to a polymeric compound, to variants of compositions intended for the manufacture of polymer photovoltaic, light-emitting devices and organic transistors, as well as to a method for the preparation of a polymeric compound and its use. The polymer compound has the general formula (I),where n is an integer from 2 to 2000 and represents the number of repeating monomeric units in the polymer chain, which may be identical or different, R1, R2, R3, R4 - the same or different from each other and represent a hydrogen atom, halogen, an alkyl group, an alkoxyl group, a thioalkyl group, an aryl group, alloctype, a thioaryl group, an arylalkyl group, an aryloxy group, an arylalthio group, an arylalkenile group, an arylalkynile group, a monovalent heterocyclic group, a heterocyclic tighrope, an amino group, a substituted amino group, a silyl group, a substituted silyl group, an acyl group, an acyloxy group, a carbonic acid residue, an amide group, an acid-imide group, a carboxyl group, a substituted carboxyl group, a cyano or nitro group, R5, R6 - the same or different from each other and represent an alkyl group C1-C20; X is a group of ,where Y=N-R7, or CR8R9, or SiR8R9, where R7, R8, R9- the same or different from each other and represent an alkyl group C1-C20, or take the same values as R1, R2, R3, R4, R5 or R6, EG-1 and EG-2 - end groups of the polymeric compound that are independent from each other and represent an atom of hydrogen, halogen, trialkylsilyl (-Sn(Alkyl)3), the residue of boric acid (-B(OH)2), ester of boric acid (-B(OAlkyl)2), aryl or heteroaryl fragment. The composition contains, at least, one polymeric compound of the general formula (I) and, at least, one material selected from the group consisting of a hole-transport material, an electron-acceptor material, an electron-transport material, and a flocking material. In the second version, the composition comprises, at least, one polymer compound of the general formula (I) and, at least, one fullerene compound. The process of producing polymers of the general formula (I) is that a polycondensation reaction of Stille or Suzuki is carried out to couple the starting monomers together to form a conjugated polymer. Polymers of the formula (I) are used for the manufacture of photovoltaic converting devices, preferably solar cells, solar panels, solar modules, and optical sensors.EFFECT: invention allows to increase the electronic properties of polymers and to improve the photovoltaic properties of the converting devices.15 cl, 8 dwg, 1 tbl, 4 ex

Nanotubular materials crystallising in system of k2o-tio2-x-h2o (x=nio, mgo, al2o3, cr2o3, co2o3, fe2o3) and method of their synthesis // 2640766
FIELD: chemistry.SUBSTANCE: nanotubular materials crystallising in the system of K2O-TiO2-X-H2O (X=NiO, MgO, Al2O3, Cr2O3, CO2O3, Fe2O3) are characterized by the fact that in their composition up to 10% of ions Ti4+ is replaced by doping two- or trivalent metal. The method of synthesis of nanotubular materials is characterized by the fact that the synthesis of the samples is carried out by hydrothermal treatment of a pre-prepared mixture of hydroxide in KOH solution, to produce the initial mixtures of hydroxides, a solution of titanyl chloride synthesised by reaction of TiCl4 with chilled distilled water, is mixed with aqueous solutions of salts of finished elements in a predetermined ratio, and then the precipitation of hydroxides is produced by adding NH4OH to the aqueous solution mixture at pH=9-9.5 followed by washing with distilled water, drying at 70-90°C and mechanical crushing, then the crushed precipitate is mixed with 10 M KOH solution and subjected to a hydrothermal treatment at 170-180°C for, at least, 24 hours, after which the resulting product is washed with distilled water.EFFECT: invention makes it possible to synthesise potassium-titanate nanotubes with an average outer diameter of 5 to 12 nm.2 cl, 5 dwg, 2 ex
ethod for producing porous graphene // 2640765
FIELD: nanotechnology.SUBSTANCE: carbon source obtained from biomass, selected from the cellulose and/or lignin, is dried over a catalyst selected from a group consisting of manganese chlorides, iron compounds, cobalt compounds and nickel compounds, to obtain the first intermediate product. The weight ratio of the catalyst to the carbon source is (0.01-2):1. The obtained first intermediate product is heated in a protective atmosphere from (20-40)°C to (300-400)°C at a speed of (5-20)°C/min and held at this temperature to obtain the second intermediate product. The resulting second intermediate product is heated in a protective atmosphere to (800-900)°C at a speed of (30-40)°C / min and held at this temperature to obtain the third intermediate product. The resulting third intermediate product is heated in a protective atmosphere to (1100-1300)°C at a speed of (50-60)°C/minute and held at this temperature to obtain the fourth intermediate product. The resulting fourth intermediate product is cooled in a protective atmosphere to (900-1000)°C at a speed of (30-50)°C/min. Throughout all stages one or more gases selected from nitrogen and inert gases are used as a protective atmosphere. Agricultural and forestry wastes, for example, corn stalks or cobs, sorghum stalks, beet pulp, oilcake, plant wastes, wastes of corn cobs, wood chips, stalks of cotton and cane are used as a biomass resource at the first stage.EFFECT: method for producing porous graphene from cheap and affordable raw materials is simple, highly productive and provides improved electrical conductivity of the target product.23 cl, 5 dwg, 10 ex
ethod for forming nanocrystalline surface layer on details from aluminium alloys (versions) // 2640687
FIELD: nanotechnology.SUBSTANCE: amorphous surface layer is formed by bombarding it with ions of one of the following elements: Y, Yb, C, N. After that, the amorphized surface layer is crystallized by exposing the surface to ultrasonic vibrations with energy sufficient to provide the crystallization process, and the crystallization process is performed until necessary dimensions of nanocrystals are obtained. After that, the ultrasonic exposure is stopped and the material of the product is cooled at a rate ensuring the fixation of processes of the material transition from amorphous state to nanocrystalline one.EFFECT: improved operational properties of the details.6 cl, 3 ex

ethod of local nanocrystallization of barium-titanium-silicate glasses // 2640606
FIELD: chemistry.SUBSTANCE: composition glass BaO is 35-45 moll. %, TiO2 10-20 moll. %, SiO2 40-50 moll. % is irradiated with a focused femtosecond laser beam generating pulses at a wavelength of 1030 nm with a frequency of 100-500 kHz with a duration of 300 fs and an energy of 0.5-1.5 mcJ. The laser beam focused by a lens with a numerical aperture of 0.45-0.65, is moved relative to the glass in a velocity range of 500-1000 mcm/s.EFFECT: invention makes it possible to locally form extended nanocrystalline structures with a length of, at least, 200 mcm and an adjustable width that have the second harmonic generation in the volume of barium-titanosilicate glasses.3 dwg
Contact lenses containing water-soluble polymers or copolymers of n-(2-hydroxyalkyl)methacrylamide // 2640593
FIELD: medicine.SUBSTANCE: ophthalmic article is made of hydrogel as a cross-linked polymer matrix and contains at least one water-soluble, non-reactive hydrophilic polymer containing less than 20 mole % of anionic repeating units and repeating units derived from a compound of formula I where R1 is hydrogen or methyl; R2 is H or C1-4 alkyl substituted by at least one hydroxyl group; R3 is C1-4 alkyl substituted by at least one hydroxyl group. The water-soluble hydrophilic polymer has a polymerization degree of 100 to 100,000, and is free of end hydrophobic polymer units. Method for ophthalmic article wettability improvement includes ophthalmic article contacting with a solution containing at least one of the above water-soluble nonreactive hydrophilic polymer, under conditions sufficient for inclusion of an effective lubricant quantity of hydrophilic polymer into the ophthalmic article. The ophthalmic solution contains from 10 m. p. and to 10 wt % of at least one water-soluble, nonreactive hydrophilic polymer.EFFECT: invention allows to increase the wettability of an ophthalmic article without surface treatment.29 cl, 1 tbl, 1 ex
Filled epoxy composition // 2640519
FIELD: chemistry.SUBSTANCE: composition contains, wt %: epoxy anhydride mixture 90-99.0 and nanoparticles of gallium oxides, either indium or thallium with sizes of up to 50 nm 1.0-10.0. The epoxy anhydride mixture contains epoxy resin ED-20, anhydride hardener - isomethyltetrahydrophthalic anhydride, plasticiser EDOS, accelerator UP-606/2 at a weight ratio of 100:80:5:1.5, respectively. The composition is pre-treated with ultrasound at a frequency of 22 kHz to uniformly distribute the nanoparticles in the volume of the composition.EFFECT: improved thermomechanical properties.1 tbl, 12 ex

ethod of betulin nanocapsules production // 2640499
FIELD: nanotechnology.SUBSTANCE: method for producing betulin nanocapsules is characterized in that an apple or citrus pectin is used as the nanocapsule shell, and betulin is used as the nucleus. According to the method betulin powder is added to a suspension of high- or low-etherified pectin in methanol in the presence of 0.01 g of E472c drug as a surfactant at a stirring speed of 1000 rpm, then hexane is poured in. The resulting suspension pf nanocapsules is filtered and dried at room temperature. The core: shell ratio is 1:1 or 1:3.EFFECT: according to the invention the method provides simplification and acceleration of the nanocapsules production process and increase in the yield by weight.2 dwg, 6 ex

ethod for producing nanocapules of dry extract of topinambour in gellan gum // 2640490
FIELD: nanotechnology.SUBSTANCE: dry topinambour extract is added to a gellan gum suspension in methanol containing 0.01 g of E472c drug as a surfactant, stirred at 1000 rpm, then methylethylketone is added. The resulting nanocapsule suspension is filtered, washed with methylethylketone and dried, while the weight ratio of gellan gum to the dry topinambour extract is 1:1, 3:1, 5:1 or 1:5.EFFECT: method ensures simplification and acceleration of the nanocapsules production process, reduction of losses during the nanocapsules production and can be used in the pharmaceutical and food industries.4 dwg, 5 ex

ethod of production of nanocapsules of dorogov antiseptic excitor (dse) fraction 2 // 2640489
FIELD: nanotechnology.SUBSTANCE: method for production of Dorogov antiseptic excitor (DAE) nanocapsules fraction 2 in a shell of gellan gum is described. In the method DAE fraction 2 is added to a suspension of gellan gum in ethanol in the presence of 0.01 g of E472c drug as a surfactant at a stirring speed of 1300 rpm. Then hexane is added, the resulting precipitate is filtered and dried at room temperature. The core: shell ratio is 1:1, or 1:3, or 3:1.EFFECT: simplification and acceleration of the nanocapsules production process and increase in yield by weight.3 dwg, 4 ex

ethod for production of nanocapules of auxins // 2640488
FIELD: nanotechnology.SUBSTANCE: auxine is added to an agar agar suspension in isopropanol in the presence of a surface-active agent at a stirring speed of 1300 rpm. Then petroleum ether is poured in. The resulting suspension of nanocapsules is filtered and dried at room temperature. The core/shell ratio in nanocapsules is 1:1, or 5:1, or 1:3.EFFECT: method ensures simplification and acceleration of the nanocapsules production process, reduction of losses during the nanocapsules production and can be used in the pharmaceutical and food industries.5 dwg, 10 ex
ethod for production of antimicrobial silver-containing cellulose material // 2640277
FIELD: textile, paper.SUBSTANCE: method for the production of an antimicrobial silver-containing cellulosic material is claimed, comprising the treatment of a cellulose-containing material with a previously prepared aqueous dispersion of silver particles, followed by dehydration and drying. Wherein the dispersion of silver nanoparticles with the silver concentration from 0.006 wt % to 0.06 wt % contains preparations not reducing the aggregative stability of the silver particles, namely, gelatine, a cation-active polyelectrolyte, e.g. chlorhexidine, miramistin, a preparation based on polyhexamethylenguanidine hydrochloride or quaternary ammonium compounds, and a reductant, e.g. sodium tetrahydroborate or alkaline solutions of starch. In addition, the aqueous dispersion of the silver particles may contain a film-forming compound, for example PVA, PVS.EFFECT: increasing the efficiency of producing an antimicrobial cellulosic silver-containing material and ensuring its high biological activity during long operation after humid-heat treatments.6 cl, 2 tbl, 26 ex
 
2551375.
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