Method of depositing decorative finish coating
SUBSTANCE: method comprises first adding blue or purple ink in amount of 0.15-0.30% (by weight) to liquid sodium glass, followed sodium chloride 16-33%, mixing for 1-2 minutes, holding for 10-12 minutes and mixing for 1-7 minutes before depositing the mixture on an article. A second layer is deposited using liquid sodium glass with glycerine with concentration of 45-55%. If water resistance of the finish coating is insufficient for operating conditions, a protective coating of acrylic lacquer AK-199 is deposited on the surface of the double-layer finish coating based on liquid glass.
EFFECT: method of depositing decorative finish coatings enables deposition of said coatings on different materials: gypsum, terracotta, aluminium, copper, steel, linen cord, glass, immortelle and wood, including on rods used in horticulture.
2 dwg, 2 ex
The invention relates to the field of applying coatings on the basis of liquid glass. Can be used in the manufacture of the art products for the decoration of modern interiors, in floristry and other areas where you want to use beautiful unusual texture.
Known decorative textured coating: "hammer", "moiré", "rime", "crocodile skin", "shagreen" and others. To obtain these coatings are paints containing organic solvents, and as film-forming materials are melamine, pentaftalevyh, nitrocellulose, and other polymers. The texture in these coatings is created by modifying the surface layer of film-forming substance by introducing resourcebrowser additives and other technological techniques. These coatings have a peculiar texture, eye-catching and unusual decorative appearance, but they pollute the atmosphere, as they are made using organic solvents. Recommended formulations for application flammable. Another disadvantage of such coatings is a relatively high price. (see Livshits, M. L., Salkowski B. I. coating materials: the Handbook. - M.: Chemistry, 1982, S. 175-179).
Known water-dispersion paint comprising polyvinyl alcohol, sodium LM is some glass, surface-active agent, titanium dioxide and water, characterized in that it contains as a surfactant OP-4 - polyoxyethylene ether of alkylphenol and an additional structural component silicagel matting additive with a particle size of not more than 10 μm, boric acid and ethyl alcohol (see EN NO. 2145621, C09D 129/04, C09D 1/04, C09D 5/02,, 20.02.2000). In the composition to obtain a coating composed of liquid glass and alcohol additives, as well as in the present invention.
However, the water-dispersed paint, proposed in this patent is difficult to make and allows you to get decorative textured coating to the effect of "flowing water".
The closest technical solution is a composition for decorative and protective coating containing, in mass%: binder mixture 32-51; the pigment of 0.25 to 12.0; antifreeze additive 0,35-2,5; surfactant 0,15-1,5; antiseptic 0.25 to 2.5 and the rest of the mineral filler. According to the authors, chemical resistance than the known level more than 2 times, also increases and its decay resistance. As the binder mixture, the authors propose to use organic components and liquid glass in the ratio of 1:(0,09-0,17). As the organic component is used as a compound selected from the group comprising plasticized vodouisant polymer based on styrene, on the basis of butadiene, based on the Acrylonitrile, based on vinyl chloride, based on vinylidenechloride, based on the isobutylene, on the basis of methyl methacrylate, based on acrylamide, based vinylcarbazole, based on vinylpyrrolidone, on the basis of isoprene and other. As a mineral filler composition contains a material selected from the group comprising expanded perlite sand, Marsala, porous Sands on the basis of slag, gravel clay, sand clay, burnt brick, brick chips, plastic chips, plastic pellets, sludge from paper manufacture, marble, granite, porcelain and others. As the pigment composition contains a substance selected from the group comprising fly ash, red iron oxide, titanium white, zinc white, chalk, crowns lead, crowns zinc, chrome greens, herbs zinc, Berlin blue, ultramarine blue, and organic dyes and other substances. As an antiseptic composition contains a substance selected from the group comprising acid benzoic, oxalic, formic, sodium fluoride, sodium silicofluoride, etc. as surfactant composition contains a substance selected from the group comprising the aqueous dispersion of sodium, potassium, calcium salts of the fatty acid fraction C19-C25, the water dispersion of technical, syntheti the ski, natural waxes, etc. as antifreeze additive, the composition contains a substance selected from the group comprising sodium nitrate, potassium carbonate, sodium chloride, calcium chloride, sodium formate and so on (see EN No. 2055821, C04B 41/61, 09D 5/28, 10.03.1996, prototype).
Thus, in the prototype, as well as in the present invention, in the composition to obtain a coating may include some of the same components: liquid glass, dye, sodium chloride. In General, the compositions are substantially different, with the composition proposed in the prototype, more complex, i.e. has a greater number of components and most importantly, when using the formulations in the prototype, does not form a texture of "flowing water" on the surface.
Object of the invention is to obtain coverage with a new decorative effect of "flowing water", with the use of environmentally friendly materials, reduce the cost composition for coating and the ability to apply a coating on various materials.
This object is achieved in that in the method of applying a decorative textured coatings with compositions based on sodium liquid glass, coated receive by creating three layers, and initially in liquid sodium glass add blue or purple ink 0,15-0,30% (by weight), and then sodium chloride 16-33%, the var who're asked for 1-2 minutes, wait 10-12 minutes, before applying the product, the mixture is stirred for 1 to 7 minutes; the second layer is applied using sodium silicate with a glycerol concentration of 45-55%, and the third coating layer is applied using acrylic lacquer.
To explain how the following image.
Fig.1 - Decorative textured coating obtained on the twig of hazel using compositions with a minimum concentration component (example 1).
Fig.2 - Decorative textured coating obtained on the twig of hazel using compounds with a maximum concentration of component (example 2).
The proposed method allows to obtain coatings with a new decorative effect of "flowing water", i.e. having an unusual appearance, namely coating with elements of type "icicles", created by draining slow and fast enough thickening (hardening) of the proposed structure. The method also allows the use of environmentally friendly materials, has reduced the cost composition for coating and the ability to apply a coating on various materials: plaster, terracotta, aluminum, copper, steel, glass, dried flowers and wood, including bars and rods, used in floristry.
To solve these problems, the proposed method of applying a decorative textured coatings flowing in the Yes." For this purpose it is proposed to use the formulations based on environmentally friendly and relatively inexpensive material - sodium liquid glass (GOST 13078-81) with silicate modulus of 2.8-3.0. Sodium silicate in the proposed composition is film-forming (binder) material. To make color or shade of the coating composition is injected dye. As a dye it is proposed to use ink: blue or purple (THE 2389-036-06916705-02). Decorative textured coating "flowing water" was obtained by creating multiple layers. The proposed method allows application of coatings on various materials: plaster, terracotta, aluminum, copper, steel, linen, rope, glass, chilly color and wood. These coating materials based on liquid glass had a sufficiently high adhesion when using the following technology: surface preparation, first layer of textured coating, drying (curing), apply a second coat of textured coating, drying. If operating conditions water-resistant textured coating is insufficient, then the surface texture of the coating on the basis of liquid glass was applied protective coating with acrylic lacquer AK-199.
Surface preparation consisted of degreasing and executed only when the application of coatings on metal products, with rjasanow surface. Degreasing was performed with white spirit.
The first layer was formed with the following composition, % by weight: sodium chloride 16-33; ink 0,15-0,30 and the rest is sodium silicate. In the liquid glass was added ink and thoroughly mixed until a homogeneous color. Then was gradually added sodium chloride and was constantly stirred for 1-2 minutes, when it was formed translucent jelly-like lumps and the mixture began to thicken. To achieve a consistency suitable for application of the first coating layer, it is necessary after the introduction of sodium chloride to wait 10-12 minutes. Before applying the product mixture is again thoroughly for 1-2 minutes, the resulting mixture becomes dense, homogeneous inclusions, bubbles, and crystals of salt. The resulting composition can be applied to products by methods of irrigation, dipping or molding. When implementing the first two methods, the formation of the necessary marks ("icicles") was completed in 4-5 minutes after application. For the formation of invoice by the method of modeling is necessary to increase the mixing time before applying the mixture with 1-2 minutes to 5-7. The mixture will become thicker and quite ductile. After coating by any of the three methods has received various stains ("icicle") with inclusions of crystals of sodium chloride and bubbles without the ha. The following operation - drying was carried out at room temperature for 12 hours.
The second layer is textured cover was created using a composition consisting of a liquid sodium glass with glycerin brand D-98 (GOST 6824-96) concentration of 45-55% by weight. When introduced into liquid glass glycerine formed a transparent gel-like mixture, which was used for forming the second transparent layer textured coatings methods of dipping or showering. Also this second coating layer can be applied by brush. Within 7-10 minutes after the application has completed the process of forming the coating. If it was required by the conditions of the coating textured coating was applied protective coating with acrylic lacquer AK-199.
Example 1 a specific application of the proposed decorative textured coating on the sample from rod hazel
The proposed coating was applied using the compositions with a minimum concentration component. The first layer was formed with the following composition, % by weight: sodium chloride 16; blue ink 0,15; liquid sodium glass the rest. In the liquid glass was added ink and thoroughly mixed until a homogeneous color. Then was gradually added sodium chloride and was continuously stirred for 1 minute. Then to achieve it is possible to viscosity, suitable for applying the first coating layer, after the introduction of sodium chloride waited 10 minutes. Before applying the product mixture is again thoroughly mixed for 1 minute, the mixture became homogeneous with inclusions of bubbles and salt crystals. The resulting composition was applied using a dipping method. Then ran dry at room temperature for 12 hours. The second layer of textured coatings were created by dipping method using a composition consisting of a liquid sodium glass with glycerin concentration of 45% by weight. After drying at room temperature for 24 hours brush struck a layer of acrylic lacquer AK-199. As can be seen from Fig.1, the coating obtained "flowing water" has a relatively long and thin streaks - "icicles".
Example 2 specific application of the proposed decorative textured coating on the sample from rod hazel
The proposed coating was applied using a composition with a maximum concentration of components. The first layer was formed with the following composition, % by weight: sodium chloride 33; ink 0,30; liquid sodium glass the rest. In the liquid glass was added ink and thoroughly mixed until a homogeneous color. Then was gradually added sodium chloride and was continuously stirred for 2 minutes. Then to achieve the necessary wask the STI, suitable for applying the first coating layer, after the introduction of sodium chloride waited 12 minutes. Before applying the product mixture is again thoroughly mixed for 2 minutes, the mixture became homogeneous with inclusions of bubbles and salt crystals. The resulting composition was applied using a dipping method. Then ran dry at room temperature for 12 hours. The second layer of textured coatings were created by dipping method using a composition consisting of a liquid sodium glass with glycerin concentration of 55% by weight. After drying at room temperature for 24 hours brush struck a layer of acrylic lacquer AK-199.
As can be seen from Fig.2 obtained in example 2, the coating "flowing water" is shorter and thick smudges compared with stains "icicles", obtained in example 1.
Thus, the texture of the coating can be adjusted by varying the concentrations of the components of the proposed structure.
The present invention allows to obtain the following result. Developed a method of applying a decorative textured coating with a new decorative effect of "flowing water". For coating using environmentally friendly materials, with a relatively low cost. The proposed method of applying a decorative textured coating can be applied to the hypoxia materials: plaster, terracotta, aluminum, copper, steel, linen, rope, glass, chilly color and wood, including bars and rods of hazel, used in floristry.
The method of applying a decorative textured coatings with compositions based on sodium liquid glass, characterized in that the coating produced by the creation of three layers, and initially in liquid sodium glass add blue or purple ink 0,15-0,30% (by weight), and then sodium chloride 16-33% (by weight), stirred for 1-2 minutes, wait 10-12 minutes, before applying the product, the mixture is stirred for 1 to 7 minutes, dried first layer 12 hours at room temperature; the second layer is applied, using sodium silicate with a glycerol concentration of 45-55%, dried, a second coat 24 hours at room temperature, and the third coating layer is applied using acrylic lacquer AK-199.
FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy, particularly, to production of porous forged pieces and ingots with inferior fusion point and fusible metals and alloys used for production of parts in machine building and other industrial branches. Foam polystyrene with reinforcing shell consists of surface film with internal cells filled with isopentane and air and coated with outer functional shell of one, or two or three plies. Every said ply comprises binders of the following composition, in wt %: liquid glass - 50, water - 49, surfactant - 1 and additive of disperse metal powder selected from aluminium, magnesium, zinc, lead powders or refractory material powder selected from alumina, magnesite, silica with particle size not over 100 mcm. Invention describes also the method of production of said pellets. It consists in forming of the coating as laminar shell including one, or two, or three plies by application on said pellets of liquid glass binder with addition of surfactant by pulverisation and disperse metal powder or refractory material powder by sprinkling with agitation at screen vibrating pan. Then, they are dried in air flow heated to 70°C for 10 minutes and cooled for bonding of powder particles to get reinforcing shell.
EFFECT: possibility of using these pellets as pore-forming agents in production of porous cast blanks by vacuum impregnation from metals and alloys with low fusion point and fusible metals and alloys.
2 cl, 1 tbl, 12 dwg
SUBSTANCE: invention relates to chemical composition of protective-decorative silicate coating and can be applied for painting metallic external and internal surfaces in order to protect them from corrosion and give them decorative look. Protective-decorative silicate coating contains liquid silicate glass, aluminium powder, surface-active substance sulphopolyethyleneglycol, technical finely disperse chalk with particle size not larger than 10 mcm, latex, polyorganic siloxanes and water.
EFFECT: invention provides high adhesive strength between single-package coating and metallic surface of both non-subjected to corrosion and subjected to different degree of corrosion.
1 tbl, 3 ex
SUBSTANCE: composition for obtaining heat-insulating coating on concrete building products and constructions contains liquid sodium or potassium glass, swollen vermiculite, product of interaction of caprolactam and triethanelamionoleate, kaoline and/or bentonite, Portland cement, sludge wastes of TPP water preparation, chloroparaffin.
EFFECT: increase of adhesion to concrete surface, hardness, reduction of water absorption of coating, obtained from composition.
SUBSTANCE: silicate pain contains thermolysis defecate - waste of sugar production - annealed at temperature 260 and 600°C, with particle size 1-2 mcm. Silicate paint includes, wt. p.: zinc dry white - 15-55, talc -15, defecate, annealed at temperature 600°C, - 10-64, defecate, annealed at temperature 260°C, - 12-63. Liquid sodium or potassium glass with density not less than 1200 kg/m3 is used with weight ratio 1:1 relative to dry part of paint. Paint contains pigment of red colour, obtained from tailings of dressing of ferruginous quartzites - TDFQ, annealed at temperature 1000°C.
EFFECT: improvement of painting and technical parameters.
2 cl, 3 tbl, 3 ex
SUBSTANCE: bakelite lacquer is obtained by condensation of phenols with formaldehyde in water medium in presence of amine catalyst with heating and further cooling condensation product and addition of alcohol solvent in it until required viscosity is obtained. Mixture of phenol and cardanol is used as phenols with their molar ratio phenol:cardanol 1:0.003-0.472.
EFFECT: obtaining binding agent with increased storage term and improved specific electric resistance, lower phenol content.
4 cl, 3 tbl
SUBSTANCE: composition for obtaining coating for reducing mechanical loss of high-speed electric machine rotor relates to hybrid organic-inorganic nanocomposite coatings, capable of reducing mechanical loss of high-speed electric machine rotor in cooling gaseous medium. Composition includes sol with silicate constituent based on tetraethoxysilane or methyltriethoxysilane water-alcohol solution and additionally contains modifying additive in form of compound, possessing pyro- and/or piezoelectric properties with size of particles and their aggregates 50-100 nm, with the following component ratio (wt %): sol with silicate constituent - 96-99; modifying additive - 1-4.
EFFECT: application of methyltriethoxysilane in sol composition provides adhesion with stainless steel without high-temperature processing and 11-12 class of surface roughness; application of tourmaline piezoelectric crystals as modifying additive in form of alcohol suspension or crystal powder provides antifriction properties of coating.
1 dwg, 3 ex
SUBSTANCE: method of obtaining a multi-layered covering based on SiO2-ZrO2-P2O5-Na2O includes the preparation of a film-forming solution with the following successive application of the said solution on a substrate surface and step-by-step thermal processing. To obtain the covering the film-forming solutions (FFS) are applied. For the first layer applied is FFS, which forms a silicophosphate layer, the first FFS is re-applied. After that, the step-by-step thermal processing is carried out at a temperature of 60°C for 30 minutes after the application of the first and second layer, and after the application of the third layer the thermal processing is carried out at 60°C for 30 minutes, then at 600°C for 1 hour. The components for the first FFS are applied with the following component ratio, wt %: zirconium oxochloride - 5.4; wt % ethyl alcohol - the remaining part. The components for the second FFS are applied with the following component ratio, wt %: tetraethoxysilane - 2.6-4.8; sodium chloride - 3.4-5.6; phosphoric acid - 0.5; 96 wt % ethyl alcohol - the remaining part.
EFFECT: method improvement.
SUBSTANCE: composition includes hollow aluminosilicate or corundum microspheres, binder in the form of aluminophosphate with free aluminium oxide content of less than 4 wt %, and water with the following ratio of components, wt %: aluminosilicate or corundum microspheres - 45-65, aluminophosphate - 35-55, water - the balance. The microspheres used have internal diameter of 6-250 mcm and wall thickness of 1-10 mcm. The invention also relates to a heat-protective coating which consists of at least two layers on a base, the first of which is the undercoat, and the second layer is made of said composition, wherein the composition for the first layer further includes C45-C60 fullerenes in amount of 0.001-0.002 wt %.
EFFECT: obtaining a durable coating with high operating temperature.
9 cl, 3 tbl, 6 ex
SUBSTANCE: invention relates to fire-resistant, thermal-protective coatings for different types of surfaces of different shapes which require thermal- and fire-protection, used in different industries as fire-proof, thermal-protective coatings for pipelines of heating systems, boilers and other thermal equipment, for coating equipment in order to protect personnel from contact burns from hot and cold metal surfaces, for cooling equipment used in facilities with unfavourable humidity and temperature conditions as an anti-condensate and anti-corrosion coating, for external heat-insulation of buildings and structures and internal treatment of buildings in order to prevent freezing and dampness of walls. The fire-resistant, thermal-protective coating is made from a composition which includes an acrylic dispersion, filler - closed non-combustible hollow glass microspheres with size or 20-200 mcm, which are free-flowing powders with packed density of 0.18-0.30 g/cm3, kaolin, zinc borate, inorganic binder which is a composition of liquid sodium glass and nano-size silicon hydroxide modified with sodium aluminate, auxiliary components - titanium dioxide, pearlite, aluminium hydroxide, functional additives - decabromodiphenyl oxide, plasticiser S-3, curing agent - sodium silicofluoride and water.
EFFECT: obtaining a thermal-protective coating which is non-combustible, heat-resistant, with high adhesion to metal, concrete plastered and brick surfaces, improved environmental properties and improved technology of obtaining the coating.
2 tbl, 6 ex
SUBSTANCE: invention relates to building materials and can be used in applying fire-retardant coatings on building structures. The fire-retardant composition in form of a water-tempered dry mixture for applying coatings is characterised by that it contains, wt %: portland cement 20.0-60.0, expanded vermiculite 10.0-40.0, chrysotile asbestos 5.0-25.0, chamotte 5.0-25.0, expanded pearlite 10.0-30.0, polyfunctional concrete modifier 0.1-1.0, fine water-soluble adhesive 2.0-8.0 and a water-retaining additive 0.1-3.0.
EFFECT: improved crack resistance owing to strain redistribution on the whole material.
FIELD: chemical industry, paint-vehicle systems, in particular heat protective dyes.
SUBSTANCE: claimed dye contains ceramic and corundum microspheres; resins, selected from group including silicone resin, polyesterepoxy resin, acrylic resin dispersions as binder; pigment; and aluminum powder as deflector. Such composition provides reduced heat loss into environment. Obtained dyes have thermal gradient, improved heat-retention properties and strength, and useful in corrosion and heat-loss protection of building construction, transport, gas and oil lines, heating systems, etc.
EFFECT: easier method for dye production; strength and homogenous heat protective dye layer of improved adhesiveness.
2 cl, 3 tbl
FIELD: chemical industry, in particular polysilicate binder and adhesive composition for adhesives and protective and ornamental coats.
SUBSTANCE: claimed binder is obtained by providing reaction product of aqueous sodium and/or potassium silicate with predetermined module and density, followed by introducing of amorphous silica with specific surface of 175-380 m2/g. Binder of present invention is useful in industrial and civil building and for corrosion protection.
EFFECT: environmentally friendly adhesive composition with increased adhesion including under prolonged water action, improved spreadability, and storage stability, increased heat and fire resistance.
4 cl, 2 tbl, 19 ex
FIELD: chemical engineering.
SUBSTANCE: task of invention resides in prevention of monomeric methyl methacrylate from polymerization via inhibition of inner surface of the process equipment and thereby prevention of polymeric scale formation thereon, which would lead to heavy cleaning operation involving dismounting of equipment to fragments and burning out of polymeric scale. To that end, inner surface of equipment is treated with inhibitory solution containing sodium liquid glass solution, sodium silicofluoride as hardened in amount 25% of the weight of liquid glass, and water-soluble nigrozin at concentration in hardened liquid glass layer not exceeding 1% of the weight of liquid glass. Method may be used in production of other ethylenically-unsaturated monomers.
EFFECT: eliminated scale cleaning operation.
FIELD: protective coatings and fire protection.
SUBSTANCE: invention relates to flameproof swelling coatings mainly for vermiculite-based wood materials for use in construction, especially for coating wood and metallic surfaces and wood articles designed for use in high-temperature media. Claimed flameproof coating is made from composition containing Portland cement, swelled vermiculite, water, and additionally mullite-silica fiber, Al2O3, and Mecellese additive. Such composition leads to prolonged activity, reduced heat conductance of coating, widened application area thereof, and possibility of using material to protect articles and stuffs against high temperature-caused inflammation. Coating also allows time needed to heat article to critical temperature to be increased by a factor of 1.5-2, consumption of coating per unit area to be increased by 10-15%, and coating-article surface adhesion quality to be improved.
EFFECT: improved performance characteristics of coating.
FIELD: production of refractory paints (molded and non-molded) at roasting temperature up to 1550°C; marking articles before and after heat treatment.
SUBSTANCE: proposed dyestuff contains the following components, mass-%: titanium dioxide, 30-75; chromium oxide, 5-50 and cobalt aluminate, 5-40. Components taken at definite ratio (mass-%) make it possible to obtain dyestuff for marking the articles inclusive those working at high temperatures and keeping marks intact during operation at temperature up to 1550°C and at thermo-cycling of marked articles.
EFFECT: enhanced efficiency and reliability.
FIELD: protective materials.
SUBSTANCE: invention relates to a method for preparing priming coat for steel that is designated for assembly and applying upper coat. Steel in grounded with priming coat comprising a silicon dioxide-base binding substance containing silicon dioxide aqueous sol stabilized with aluminum oxide and, optionally, small amount of alkaline metal silicate. Indicated binding agent shows the mole ratio SiO2/M2O = at least 6:1 wherein M means the total amount of alkaline metal ions and ammonium ions. After drying the priming coat up to disappearance of stickiness in weal touch by a finger it is treated optionally with a solution that enhances the strength of the priming coat film.
EFFECT: improved and valuable properties of coat.
12 cl, 7 tbl, 21 ex
FIELD: building materials industry; production of silicate paint of special composition.
SUBSTANCE: the invention is pertaining to the field of building materials industry, in particular, to the composition of the silicate paint for deposition of protective and the decorative coatings intended for staining, for example, of brick, concrete and plastered external and internal surfaces, protection of metal against oxidation and timber against putrefaction and fire. The paint contains the following components ratio (in mass %): 35.0-65.0 - modified liquid glass, 15.0-45.0 - quartz-containing component, 3.0-23.0 - talcum, 3.0-30.0 - transient oxide of s2 element, 0.1-2.0 - sodium tripolyphosphate as a deflocculant, 0.01-5.0 - organic modifying agent - a copolymer, 0.001-2.5 - cellulose ether as thixotropic additive agent. As the liquid glass they use sodium glass, ammonium glass, lithium glass, potassium glass, sodium-potassium glass modified by polyorganohydridesiloxane. As the organic modifying agent- copolymer they use acrylate copolymer, or butadiene-styrene copolymer, or vinylacetate copolymer. The silicate paint may contain pigments in quantity of 0.5-15.0 mass %. The invention ensures an increased viability and storage duration of the paint, reduction of its value at keeping high parameters of its breaking away capacity, strength of adhesion, water resistance, frost-resistance and required viscosity.
EFFECT: the invention ensures an increased viability and storage duration of the paint, reduction of its value at keeping high parameters of its breaking away capacity, strength of adhesion, water resistance, frost-resistance and required viscosity.
2 cl, 2 tbl
FIELD: special cover materials.
SUBSTANCE: invention relates to a method for preparing anticorrosive, refractory and heat-insulating cover and its using. The composition comprises the following components, wt-%: sodium or potassium water glass, 4.5-95.0; mixture of hollow microspheres as a filler, 4.5-95.0; non-ionogenic surface-active substance, 0.5-20.0; swollen vermiculite or asbestos fibers as reinforcing filler, 0.0-50.0, and titanium dioxide, 0.0-20.0. Hole microspheres are chosen from the group comprising hollow polymeric microspheres, hollow technogenous microspheres or mixtures of microspheres. Microspheres are taken in limits of their sizes from 10 to 500 mcm with the filled value in limits from 50 to 650 kg/m3. Invention provides enhancing the anticorrosive resistance, refractory and heat-insulating stability, and to simplify technology for making the cover.
EFFECT: improved preparing method, improved and valuable technical properties of cover.
2 cl, 2 tbl, 4 ex
FIELD: process for reducing of wood destruction rate by synthesizing and using non-toxic aqueous composition favorable for environment.
SUBSTANCE: method involves bringing wood into contact with aqueous alkaline colloid composition containing electrostatically charged particles of colloid-colloid silicon oxide comprising barium ions included therein, said contacting occurring under environmental temperature and pressure conditions or under elevated temperature and increased pressure conditions. Composition contains water, hydroxide of alkaline metal in an amount sufficient for bringing of water pH value to 10, silicon-containing salt, boron-containing salt, electrostatically charged particles of colloid silicon oxide, said particles containing boron ions included therein, and, optionally, aluminum halogenide and preservative. Composition is obtained by mixing components thereof. Method is provided under conditions causing production of oversaturated solution of boron-containing salt. Method allows quality of wood to be improved.
EFFECT: improved preservation of wood by increasing resistance thereof to insect, decay, ultraviolet damages, fires and other environmental effects.
43 cl, 7 dwg, 12 ex
FIELD: protective coatings.
SUBSTANCE: invention relates to undercoat for metallic substrates designed for manufacturing articles and for applying top coating layers. Undercoat comprises silicate binder containing aqueous silica sol having SiO2/M2O molar ratio at least 25:1, wherein M represents sum of alkali metal ions and ammonium ion, silica particles having average size above 10 nm. Binder may further contain insignificant amount of alkali metal silicate. Content of solids in undercoat ranges between 20 and 40% (v/v) and volume ratio of pigment concentration to critic concentration thereof is below 1. Undercoat contains following proportions of components aqueous silicate sol as binder having SiO2/M2O molar ratio at least 25:1 and pH value between 9.5 and 11, wherein M represents sum of alkali metal ions and ammonium ion and silica particles are optionally modified with aluminum oxide and have average diameter 10-16 nm; 10-55% zinc and/or zinc alloy powder based on the weight of dry film having average particle size between 2 and 12 μm; 0-35% organic resin based on the weight of dry binder; and 0-30% organosilicon finishing material. Coating may contain zinc-free pigment(s) and filler increasing storage life time of undercoat. Method of applying undercoat onto steel substrate comprises preparing undercoat using silica sol, whose pH is adjusted to 9.5-11, and depositing undercoat onto steel substrate.
EFFECT: increased hardness and wear resistance, and enabled deposition of corrosion-resistant coating without blistering.
15 cl, 10 tbl, 14 ex