De-icing pseudo-plastic fluid
The invention relates to the creation of de-icing fluid (AMPS) to remove ice accumulation and prevent the icing surface, is used to protect aircraft or other equipment from freezing during their stay on earth. De-icing fluid contains alkylaryl, corrosion inhibitor, a nonionic surface-active agent (surfactant), water-insoluble additive, thickening agent, a hydroxide of an alkali metal and/or ammonium, and water. As a water-insoluble additive contains oleic acid. As the thickener is a copolymer of methyl methacrylate and methacrylic acid containing from 70 to 80% of methacrylic acid with an average molecular weight of from 500,000 to 700,000. De-icing fluid according to the invention is effective and keeps the fluid properties after exposure to temperatures of 70 and 95With within 30 days. 12 C. p. F.-ly, 3 tables. The technical field to which the invention relatesThe invention relates to aircraft and, in particular, for non-Newtonian pseudo-plastic de-icing fluid (AMPS) to remove ice accumulation (frost, hoarfrost, snow, ice) and p is used to protect aircraft or other equipment from freezing during their stay on earth.The level of technologyWhen ground icing of aircraft ice deposits are usually formed on the fuselage, tail section and most of the wing surface. The phenomenon of icing increases the weight of the plane, the distortion of the profile, the increase in drag and reduction in aerodynamic characteristics. All this can lead to serious flight accidents with casualties.In operation, the removal of glacial deposits from the surface of the aircraft is carried out by spraying by means of special nozzles heated to 70-80°C, diluted with water AFTER depending on weather conditions in the ratio of 75:25 or 50:50 by volume. In the case of expected icing preventive treatment of the surface of the plane AFTER without dilution and without heating.In accordance with the international standard ISO 11078, which is characterized in table 1, tests to determine the effectiveness of the LATTER in terms of artificial icing (freezing rain) are carried out after mechanical mixing with a speed of 3500 rpm for 5 minutes and holding at least 20 minutes at rest.Known after the aircraft (the patent is 1-1,2Surfactants 0,5-1,0Water To 100In the specified ECW as a corrosion inhibitor is used disubstituted phosphate of an alkali metal, as the SAC - bansilalpet methyldiethanolamine derivatives diethylenglycol ethers of fatty alcohols, and water-insoluble additives - stearic acid.According to the international standard ISO 11078 AMPS should meet the basic operational requirements, in particular the preservation of the properties of concentrated AFTER after heating at 70°C for 30 days and diluted with water in the ratio 50:50 by volume AMPS at 95°C for 30 days without significant changes of physico-chemical and performance properties, while also maintaining high efficiency in terms of loss of supercooled rain for at least 30 minutes after mixing with a speed of 3500 rpm for 5 minutes. Famous ECW does not meet these requirements. When warming up, especially at 95°C there is a selection of the specified surfactant. The viscosity of this PLEASE after stirring with a speed of 3500 rpm drops from 50-100 mm2/s up to 14-25 mm2/s, and its effectiveness in terms of supercooled rain drops to 5-15 minutes.The closest analogue is the LATTER for which 0Surfactant is 0.02 to 1.5Thickener 0,05-1,5Water To 100The effectiveness of this PLEASE in conditions of artificial icing freezing rain is 43-55 minutes.In the specified ECW as a corrosion inhibitor used is a water-soluble alkali metal salts of inorganic acids (boric, phosphoric, sulphuric, nitric, acetic), imidazoles or triazoles (benzotriazol, tolyltriazole), as surfactants - nonionic surfactants, which represents an ethoxylated higher fatty alcohol of the formula C6-C22O(C2H4O)]1-10N, and as a thickener - polymer is a water-soluble crosslinked polyacrylic or polymethacrylic acid or their mixture. The average molecular weight of the polymer is 750000-1250000 and viscosity of 0.5 wt.% an aqueous solution (pH 7.0) at 20°C and at a shear rate of 5.6 with-1is 1000-13000 MPaC.Famous ECW does not meet the requirements sprinkling it on the surface through the nozzle, because when used as a thickener polymer with a molecular weight of more than 700 thousand AMPS at a temperature of 20°C and below shows the property wypadanie”. The term “wypadanie” characterizes the process of obtaining discussthe AMPS through the jet equipment spillages aircraft, the formation of polymer filaments, that is unacceptable, because the LATTER loses the property of fluidity. In addition, it does not satisfy the requirement for aerodynamic suitability due to insufficient removal from the surface of the aircraft by the air flow.The inventionThe invention consists in the creation of AMPS with high efficiency of removal of ice or prevent ground icing surface of the aircraft in conditions of freezing rain, meet the requirements of international standard ISO 11078.Offer PLEASE include alkylaryl, corrosion inhibitor, surfactant, water-insoluble additive, thickening agent, a hydroxide of an alkali metal and/or ammonium, and water. As water-insoluble additives AMPS according to the invention contains oleic acid as a thickener contains a copolymer of methyl methacrylate and methacrylic acid.Copolymer of methyl methacrylate and methacrylic acid contains from 70 to 80 % of methacrylic acid and has an average molecular weight of from 500,000 to 700,000.Alkylaryl can be a glycol, propylene glycol, glycerin, diethylene glycol, triethylene glycol and/or mixtures thereof.As the surfactant AFTER the invention contains nonionic surfactants.In particular, as neyh fatty alcohols of the formula CnH2n+1O(C2H4O)mH, where n=10-18, m=8-10.As a corrosion inhibitor ECW contains salts of phosphoric and/or nitric acid, in particular alkali metal salts and/or ammonium.PLEASE according to the invention contains, wt%:Alkylaryl 25-95Water 5-75The corrosion inhibitor of 0.5-2.0Water-insoluble additive 0,02-1,0Thickener 0,5-5,0Surfactants 0,05-1,0The alkaline hydroxidemetal or ammonium 0,15-2,0Information confirming the possibility of carrying out the inventionExamples 1-12Comparative examples 1-6In a reactor with a stirrer, a jacket and a reflux condenser load 350 kg of water and 10 kg of dinatriumfosfaatti. Include the stirrer and heating. Dissolution of dinatriumfosfaatti hold for 15 minutes while operating the stirrer and a temperature of 60°C. Then load 650 kg of ethylene glycol, 25 kg of a copolymer of methyl methacrylate and methacrylic acid and 5 kg of sodium hydroxide. Their dissolution is carried out for 2 hours. After this time load 5 kg cintanya ALM-10 (mix polyoxyethyleneglycol synthetic esters of primary fatty alcohols) and 5 kg of oleic acid. Within 15 minutes spend their dissolution.Table 2 shows the composition according to the invention AFTER (A1-A12) and the comparator is s (A1-A12) contains as a binder a water-insoluble copolymer of methyl methacrylate and methacrylic acid, in the process of obtaining the LATTER reacts with the hydroxide of an alkali metal and/or ammonium, forming a water-soluble salt, and as a water-insoluble additives oleic acid.Table 3 shows basic physical and chemical properties AFTER the invention of the prototype and AFTER according to the invention with exorbitant number of components.As shown in the table 3 data, increased efficiency in conditions of freezing rain AFTER according to the invention (A1-A12) after mixing with a speed of 3500 rpm for 5 minutes compared with the prior art (comparative examples C1 and C2) is provided by introducing into the composition after the thickener, which represents a copolymer of methyl methacrylate and methacrylic acid, and water-insoluble additives, representing oleic acid. When the content of alkalophile 25 wt.% enter the maximum content of additives, corrosion inhibitor, a thickening agent, a hydroxide of alkali metals, ammonium hydroxide and the lowest content of water-insoluble additives and surfactants, and when the content of alkalophile 95 wt.% - the minimum content of the additive corrosion inhibitor, a thickening agent, a hydroxide of an alkali metal or ammonium and the maximum plane of the air flow (wind suitability).When the beyond a reduced content of components (comparative examples C3 and C5) shelf life and effectiveness AFTER in icing conditions is reduced.With exorbitant high content of components (examples C4 and C6) of the composition are stratified within 1-3 months, which makes it impossible for its industrial use as storage time AFTER shall be not less than 2 years. PLEASE according to the invention has the following physical and chemical properties:Density at 20°C, g/cm31,050-1,100PH, pH 7,0-7,5Kinematic viscosityat 20°C, mm2/230-350Flash point, °C 120-130The onset temperaturecrystallization, °C, not aboveconcentrate 32- when diluted with water 50:50 by volume 10Preservation properties AFTER after heating at 70°C for 30 days.Property preservation diluted with water 50:50 by volume AMPS after heating at 95°C for 30 days.Dynamic viscosity at 20°C and a shear rate of 5.6 with-1MPawith, 4550-6300.The change in dynamic viscosity after mixing with a speed of 3500 rpm for 5 minutes not more than ±10%.The efficiency is about rain, min, not less than 30.Toxicity: lethal dose when injected into the stomach LD50mg/kg:ECW-based glycol 10000PLEASE propylene 22000Hazard class effect on the human body 4.PLEASE according to the invention is superior to the prototype efficiency in icing conditions and maintaining liquid properties after exposure to temperatures of 70 and 95°C for 30 days.PLEASE according to the invention meets all the requirements of international standard ISO 11078.With the introduction AFTER the invention of oleic acid as a water-insoluble additive and a copolymer of methyl methacrylate and methacrylic acid as a thickener received an unexpected effect of reducing the stability of the foam, increasing the viscosity of the ECW, and effectiveness in AFTER the icing conditions.
Claims1. De-icing fluid to remove ice accumulation and/or prevention of ground icing of aircraft, including alkylaryl, corrosion inhibitor, a nonionic surface-active agent (surfactant), water-insoluble additive, thickening agent, a hydroxide of an alkali metal and/or ammonium and water, characterized in that as water is acrylaway acid, contains 70 - 80% of methacrylic acid with an average molecular weight of from 500,000 to 700,000.2. De-icing fluid under item 1, in which as alkalophile use polyhydric alcohol containing 2 to 6 carbon atoms.3. De-icing fluid under item 2, in which alkylaryl represents ethylene glycol, propylene glycol, glycerin, diethylene glycol, triethylene glycol and/or mixtures thereof.4. De-icing fluid under item 1, in which the nonionic surfactant is a monoalkyl ethers of polyethylene glycol on the basis of primary fatty alcohols of the formula CnH2n+1O(C2H4O)mH, where n=10-18, m=8-10.5. De-icing fluid under item 1, in which the corrosion inhibitor use salts of phosphoric and/or nitric acid.6. De-icing fluid under item 5, in which the salt of phosphoric and/or nitric acids are alkali metal salts and/or ammonium.7. De-icing fluid under item 1, in which oleic acid is contained in an amount of 0.02 to 1.0 wt.%.8. De-icing fluid under item 1, in which the copolymer of methyl methacrylate and methacrylic acid is contained in the amount of 0.5-5.0 wt.%.9. Protiva entellina fluid under item 1, in which the corrosion inhibitor is contained in an amount of 0.5-2.0 wt.%.11. De-icing fluid under item 1, in which the surfactant is contained in an amount of 0.05 to 1.0 wt.%.12. De-icing fluid under item 1, in which the hydroxide of an alkali metal and/or ammonium contained in an amount of 0.15-2.0 wt.%.13. De-icing fluid under item 1, in which the water is contained in the amount of 5-75 wt.%.
FIELD: road servicing industry.
SUBSTANCE: the invention is dealt with the road servicing industry, in particular with the methods of extirpation of ice covering on motorways, bridges, flyovers, and also aerodromes. The method of the roadway covering slipperiness prevention provides for application of a roadway ice covering suppressing reactant based on acetate, in the capacity of which use a solution with pH=7-9.5, containing components in the following ratio (in mass %): magnesium acetate 13-17, potassium acetate 8-16, potassium hydrocarbonate 5-8, potassium carbonate 2-6, water-insoluble impurities 0-6, water - the rest. The roadway ice covering suppressing reactant may additionally contain a fired limestone in amount of 3-5 mass % in terms of calcium oxide. The method of production a roadway ice cover suppressing reactant for a roadway covering slipperiness prevention provides for mixing of a component containing a magnesium compound, iced acetic acid and water, in the capacity of the component containing the magnesium compound is used brucite, the stirring is exercised in two stages: first they continuously agitate brucite with water and a part of iced acetic acid in a stoichiometric ratio at the temperature of 50-70°C within 50-80 minutes, then, not terminating mixing at the same temperature in the produced mix with pH=5-6 add the rest of ice acetic acid and then add potash in amount exceeding by 0.1 - 6 % the stoichiometric ratio and continue agitation till production of the roadway ice cover suppressing reactant - a solution with pH = 7-9.5 with the above indicated composition. The used roadway ice cover suppressing reactant has composition mentioned above. The technical result consists in - maintenance of the low temperature at the reactant usage, ensuring the passing ice covered roadways motor vehicles metal corrosion protection and at use as the airfield runways coatings - the corrosion protection of metals used in aircraft designs as well. The roadway coating treated with the reactant has a high coefficient of adhesion, that reduces the accident rate on the roadways.
EFFECT: the invention ensures, that the roadway coating treated with the reactant decreases the accident rate on the roadways.
6 cl, 2 tbl, 4 ex
FIELD: chemical industry.
SUBSTANCE: invention relates to preparations used for prevention and removal of snow-ice formations in roads. An anti-glaze of ice preparation comprises the following components, wt.-%: calcium chloride, 15-50; sodium chloride, 48.5-83.5; potassium ferricyanide, 0.2-0.5, and sodium dihydrogen phosphate, 0.3-1.0. Anti-glaze of ice preparation in granulated form is resistant against caking, inhibits corrosion of metals and reduces inhibitory effect of chloride on plants.
EFFECT: improved and valuable properties of preparation.
FIELD: special reagents.
SUBSTANCE: invention relates to substances for applying on surface to prevent or diminish adhering ice, mist or water on it, for prevention of icing, in particular, to anti-glaze of ice reagents. The composite comprises the following components, wt.-%: calcium chloride, 25-32; urea, 2-7; sodium nitrite, 0.03-1.0, and water, the balance. Invention provides preparing the composite harmless for environment that doesn't show harmful effect on environment, doesn't corrode road coatings, and inhibits corrosion of metals. Agent shows economy and high effectiveness.
EFFECT: improved and valuable properties of reagent.
2 cl, 1 tbl
FIELD: road-transport industry.
SUBSTANCE: method includes applying substance on asphalt-concrete mixture. As substance silicon-organic modifier is used, loss of which at 1 m2 of area of pre-placed on road asphalt-concrete mixture at temperature 80-100°C is no less than 0,3-0,5 kg. After applying modifier, asphalt-concrete mixture is rolled.
EFFECT: higher efficiency, no corrosive effect on metals, effective at temperature above -20°C.
2 cl, 3 tbl, 3 ex, 1 dwg
FIELD: domestic chemistry.
SUBSTANCE: invention relates to agents using against misting and icing windshields in transports, sight glasses in agent of individual protection and can be used in living conditions for prevention showcase glasses icing. The composition comprises the following components, wt.-%: polyoxyethylene glycol ester of synthetic primary higher alcohols of (C12-C14)-fraction as a surface-active substance, 6-25; urea or thiourea, or mixture of urea and thiourea, 1-20; glycerol, 5-25; ethylene glycol, 5-41; dye, 0.0005-0.02, and a solvent, the balance. Propyl alcohol as propanol-1 or propanol-2 can be used as a solvent. The composition elicits an anti-misting and anti-icing properties, provides two-sided protection of sight glasses of transport agents and agents of individual protection in cooling the protecting glass surface up to -40°C, elicits the prolonged protective effect, it doesn't solidify at the environment temperature below -40°C and doesn't require the special technical devices for its applying.
EFFECT: valuable properties of composition.
3 cl, 1 tbl, 10 ex
FIELD: Composition of an anti-icing water solution for roads surface treatment.
SUBSTANCE: the invention is pertaining to production of composition of an anti-icing water solution for roads surface treatment against a winter slipperiness (snow rolling-ups, a glaze ice, black ice) n the roads and streets in cities and settlements. The composition contains, in mass %: 20-27 calcium chloride, 5-30 ethyl alcohol, 0.3-5 corrosion inhibitors (borax or sodium nitrite or their mixture), the rest - water. The technical result is - an increase of effectiveness of the composition application, an increase of friction coefficient due to a decrease of the ice density, a raise of the composition ice melting capacity.
EFFECT: the invention ensures an increase of effectiveness of the composition application, an increased friction coefficient and a decreased ice density, a raise of the composition ice melting capacity.
1 cl, 1 ex, 2 tbl
FIELD: materials for miscellaneous applications.
SUBSTANCE: grain mixture comprise, in mass %, 15-45% of compressed first salt of alkaline or alkaline-earth metal and 85-55% of the second salt of alkaline or alkaline-earth metal. The first salt is a waterless hygroscopic salt.
EFFECT: reduced cost.
14 cl, 4 dwg
FIELD: preventive means against freezing and sticking of loose materials to walls of mining and transport equipment; prevention of dusting on interim roads, open-cut mining; protection of rolling stock against freezing and blowing-off of loose materials, coal and peat for example.
SUBSTANCE: preventive means is made in form of mixture of solvent and thickening additive of oil nature. Used as solvent are distillation residues of coke and by-product process and/or by-products of production of butadiene, isoprene, isobutylene, ethylene both independently and in mixture with distillation residues of production process of polymers, pyrolysis residues, benzene, styrene and distillation residues of production of butanol, isobutanol, 2-ethyl hexanol acid and 2-ethyl hexanol. Solvent may additionally contain gas oils of thermal and catalytic cracking and gas oils of coking process. Used as thickening additives are mineral and synthetic oils of all kinds, mixture of used oils, oil sludge, oil residues and oil fuel. Components of thickening additive and solvent are used at any combination. Novelty of invention is use of wastes of various processes of oil and petroleum chemistry products.
EFFECT: extended field of application; cut costs; enhanced ecological safety.
5 cl, 1 dwg, 2 tbl, 17 ex
FIELD: suppression or reduction of icing on surfaces by means of antiicing compounds.
SUBSTANCE: proposed anti-icing compounds contain succinic acid and/or succinic anhydride and neutralizing base, sodium hydroxide, potassium hydroxide or ammonium hydroxide in particular. When mixed with water anti-icing compounds form succinates in the course of reaction which causes fast liberation of heat sufficient for melting ice on surface. According to other versions, anti-icing compounds contain glycol which inhibits repeated icing on cleaned surface. Specification gives description of sets of compounds for melting snow and ice.
EFFECT: enhanced efficiency of melting snow and ice on aircraft and territories of their operation.
29 cl, 11 dwg, 7 tbl, 2 ex
FIELD: motor-car industry; other industries; methods of production of the anti-icing reactant.
SUBSTANCE: the invention is pertaining to the method of production of the anti-icing reactants for maintenance of roads in winter. The method of production of the anti-icing reactant based on sodium chloride and calcium chloride provides for mixing of the sodium chloride with calcium chloride and their heating and drying. Sodium chloride crystals are coated with the atomized solution of calcium chloride and dried in the "boiling bed" kiln with production of the double-layer granules, the outer layer of which is composed out of calcium chloride. Sodium chloride crystals are coated with calcium chloride in two phases. The forming small particles of calcium chloride are fed into the cyclone, whence the cyclone dust of the calcium chloride is fed into the mixer for intermixing with the wet crystals of sodium chloride. The produced anti-acing reactant has the improved physicochemical thermodynamic properties.
EFFECT: the invention ensures, that the produced anti-acing reactant has the improved physicochemical thermodynamic properties.
3 cl, 1 ex, 2 tbl