Anticorrosive composition and method of producing coatings based thereon
SUBSTANCE: anticorrosive coating composition contains DST-30-01 thermoplastic butadiene-styrene, an oligomer and a solvent, wherein the oligomer used is triethylene glycol dimethacrylate, the solvent used is toluene, and the composition further includes a photoinitiator - 2,2-dimethoxy-1,2-(diphenyl)ethanone.
EFFECT: faster preparation of the coating composition and direct formation of an anticorrosive coating.
2 cl, 1 tbl
The invention relates to the development of anti-corrosion coatings on the basis of butadiene-styrene thermoplastic and can be used to obtain light-curing anticorrosive coatings for tanks, metal and concrete structures in industrial and civil construction.
Known composition, representing a solution of butadiene-styrene thermoplastic elastomer DST-30, inden-coumarone resin, filler and Aerosil in butyl acetate. The song is produced by THE 38 105626-03 under the brand of sealant 51-G-10. The composition differs adaptability and recommended for use as a material for protecting capacitive chemical equipment and internal surfaces from corrosion of acid and alkaline in nature (Safronchik VI corrosion Protection of building structures and technological equipment. HP: stroiizdat, Leningrad branch, 1988, s-91). However, the application of this sealant is limited because of low heat resistance butadiene-styrene thermoplastic elastomer, as already at 50°C there is a sharp drop in strength at higher temperatures, the composition exhibits fluidity.
Obtaining heat-resistant coatings based on butadiene-styrene thermoplastic elastomer is achievable, in particular, the introduction to the song Wu is consuumer agent in combination with activators and accelerators of vulcanization. The presence in the composition of such additives provides reactions structuring involving double bonds in polybutadiene block polymer substrate and the formation of a three-dimensional crosslinked grid formed in the coating. In the invention described in the patent of Russian Federation №2315075 (MGTS SC 3/10, publ. 20.01.2008), this method is implemented by introducing the sealant 51-G sulfur and liquid Thiokol as vulcanizing of saagento, activating system consisting of zinc oxide or magnesium and stearic or oleic acid, and vulcanization accelerators - diphenylguanidine and dithiocarbamate zinc. Such a composition provides a course of vulcanization under normal conditions. The coatings obtained from solutions of this invention are characterized by a high heat resistance. Among the disadvantages of these compositions is the duration of the technological process of preparation of composition (a ready solution requires persistence during the week), limited the viability of ready-to-use composition, the formation of the coating after application occurs 7-10 days after application of the last layer, the interlayer drying time ranges from 2 to 12 hours.
Known photopolymerizing composition (patent RF №2088963, G03F 7/004, 1997; RF patent №2114454, G03F 7/004, 1998), containing butadiene-styrene thermoplastic elastomer, the connection (meth)acrylic nature, and fo is initiator. Introduction to the composition of photoinitiator connection, capable under the influence of light of a certain wavelength to the formation of active radicals, allows to significantly reduce the time of formation of the mesh material. On the other hand, the photosensitive component is stable in the absence of illumination, which enables long-term storage of the finished composition. In the above mentioned advantages of the composition according to the patent of Russian Federation №2088963 not suitable for application of protective coatings, as its application feasible methods of coating materials: the described composition is prepared in an extruder at a temperature of 150-180°C, as obtained after the extrusion, the sheet is calibrated for the calender. The composition according to the patent of Russian Federation №2114454 is prepared by dissolving thermoplastic elastomer in methylene chloride at room temperature for 2-3 hours, then the solution is heated to 40-50°C and dissolve in it the rest of the ingredients, stirred for 30 minutes followed by filtration and deaeration at 50°C for 5-6 hours. In addition to the time consuming process of preparing the composition, the need for filtration and deaeration, the production structure is associated with the work at a temperature above the boiling point of the solvent (methylene chloride boiling temperature is 40°C) and, accordingly, its evaporation.
The closest the present invention is a technical solution described in the patent of the Russian Federation No. 2430941 (C09D 5/08, publ. 10.10.2011), according to which use sealant 51-G 10 and optional ingredients (zinc oxide or magnesium, stearic or oleic acid, sulfur, polysulfide oligomer, dithiocarbamate zinc, diphenylguanidine, cyclohexanone), providing the binding of macromolecules DST-30-01 after application.
The obstacles to achieve the desired technical result of using the composition selected for the prototype include the following :
The preparation of the composition after the sequential dissolution of all components in the hermetic-based includes exposure at 20°C for 24 hours. The finished composition contains all the components of the curing system curing coagent, activators and accelerators of vulcanization), providing the binding of macromolecules of thermoplastic elastomer at room temperature. Thus, even if the shutter speed is a ready solution it flow chemical interaction, and the lifetime of the composition before application is limited.
The main drawback is that for proper formation of a corrosion-resistant coating is required at least 24 hours after the last coat, in addition, when the multilayer coating composition of the interlayer drying time ranges from 2 to 12 hours.
The technical result offers the suggested solution is to reduce the time of preparation of the mortar composition and the time of formation directly corrosion-resistant coating.
This technical result according to claim 1 of the formula of the invention is achieved by using anti-corrosion composition for coatings, including butadiene-styrene thermoplastic elastomer mark DST-30-01, oligomer and a solvent, characterized in that the oligomer use of triethylene glycol dimethacrylate, the solvent is toluene, and optionally containing photoinitiator 2,2-dimethoxy-1,2-(diphenyl)Etalon in the following ratio of components, wt.%:
Butadiene-styrene thermoplastic elastomer mark DST-30-01 - 20-40;
Triethylene glycol dimethacrylate - 5-10;
2,2-dimethoxy-1,2-(diphenyl)Etalon - 3-5;
Toluene - rest.
According to claim 2 technical result is achieved in a method of producing corrosion-resistant coating of the composition on the basis of butadiene-styrene thermoplastic elastomer mark DST-30-01 by dissolving in toluene oligomer of triethylene glycol dimethacrylate, photoinitiator 2,2-dimethoxy-1,2-(diphenyl)ethanone and thermoplastic elastomer DST-30-01, application of the composition to the surface and the subsequent formation of the coating when exposed to the composition by source of UV radiation for 15 to 20 minutes.
The invention consists in the use of such mortar photosensitive composition, which can apply high-performance methods of coating material is print materials, and its composition ensures a more rapid formation of a high-strength protective and waterproofing materials and receipt of anticorrosive coatings varied within a wide range of thickness.
The use of toluene as solvent in the composition of the claimed composition due to its thermodynamic affinity with styrene-butadiene thermoplastic elastomer, containing in the chain macromolecules vinylaromatic (polystyrene) blocks. The presence of the latter allows to reduce the time of dissolution DST-30-01 to 1-2 hours at room temperature.
Introduction to the composition of triethylene glycol dimethacrylate (TGM-3) leads to the acceleration of the process of formation of a grid of chemical bonds and, as a consequence, high-strength polymer composite. In addition, TGM-3 in the claimed composition is a promoter of adhesion due to the presence of selenopyran ester groups, while the elastic component is chemically bound with adhesive agent. In addition, TGM-3 in the inventive composition plays the role of a thixotropic additive, which helps to form thicker layers of the coating flowing down the inclined substrate.
The use of 2,2-dimethoxy-1,2-(diphenyl)ethanone justified by the necessity of obtaining quick (15-20 minutes) chemically cross-linked coating thickness 60-600 μm during one production step. 2,2-is metoxi-1,2-(diphenyl)Etalon when the absorption of light of a certain wavelength produces highly active benzoyl radical with a non-localized unpaired electron. As a result, he now initiates radical polymerization. The second formed radical (ether) is quite stable, and he initiates radical polymerization. This ensures high sensitivity of the composition and, consequently, allows to ensure the formation of trehmerschika composite for 15-20 minutes.
Use as a source of UV radiation device having the emission spectrum of intense bands in the range 254-335 nm, due to the fact that used as photoinitiator 2,2-dimethoxy-1,2-(diphenyl)Etalon capable of absorption of light in the specified wavelength range. In addition, the heat radiation source allows for the formation of the coating to provide a virtually complete removal of the solvent, which helps to ensure a defect-free film and to eliminate the need interlayer drying, if necessary, obtain a multilayer coating.
Declare photopolymerizable composition in its original form is odnoupakovochnye composition with a certain viscosity, which has a long shelf life in svetozaschitnyh conditions. At one time applied to the substrate and subsequent UV irradiation for 15 to 20 minutes, the formation of adhesion associated polymer coating. If necessary, similar to the SPO shall obom realizable receive materials in the form of free films with a thickness of up to 0.5 mm.
Thus, the cooking time of composition and the time of the formation of a corrosion-resistant coating is significantly reduced, eliminated the need for special stage of solvent removal. In General, the foregoing and defines the essence of the technical solution in comparison with the prototype on the achieved result more efficiently.
For the implementation of technical solutions used butadiene-styrene thermoplastic elastomer mark DST-30-01. Declare intervals for the ratio of DST to the toluene due to the possibility of obtaining solutions with a certain viscosity, providing the desired processability of the compositions. When the content DST less than 20 mass composition nisavaski and, for this reason, prone to running off with inclined surfaces. When using butadiene-styrene thermoplastic elastomer is greater than claimed, the number of compositions of very high viscosity and the formation of coatings of them impracticable.
Quantitative intervals content photoinitiator provide the possibility of obtaining defect-free coating in a reasonable time.
It is found experimentally that the optimum concentration of photoinitiator is in region 4 mass When the content of dimethylbenzylamine fewer than 3 mass photoinduced film formation proceeds slowly. the process of forming the coating lasts more than 40 minutes, the material is characterized by a surface stickiness. When exceeding the content of initiator relative to the claimed limits the rate of photopolymerization in the upper layers of the coating so high that due to uneven shrinkage processes the end product is characterized by the presence of multiple defects on the surface and does not involve any technical value.
Recipes offer and the control compositions, as well as the prototype shown in the table.
|The components of the compositions||Formulations of compositions according to examples MASC|
|Butadiene-styrene thermoplastic elastomer||25||35||20||45||15||25||25||25||25||-|
|Triethylene glycol dimethacrylate||10||5||9||10||10||15||2||10||10||-|
|Zinc oxide or magnesium||2|
|Stearic or oleic acid||0,01|
|The time required for formation of a coating of the prepared solution, min||15||20||15||-||-||15||20||<5||125||7 days|
The invention is illustrated by the following examples.
Example 1. Use a ratio of composition 1 (preferred formulation, see table). To do this in 60 g of toluene are dissolved with stirring 10 g of triethylene glycol dimethacrylate, 5 g of photoinitiator 2,2-dimethoxy-1,2-(diphenyl)ethanone and 25 g of thermoplastic elastomer DST-30-01. Dissolution under stirring takes place for 1-2 hours at room temperature.
Application of the composition on the protected surface is implemented by the methods of coating materials, by brush or roller, methods of air and airless spraying, dunking, irrigation; the layer thickness of from 60 to 600 μm. Applied solution light source of UV radiation for 15 min (the time required for formation of a coating of finished solution) (see table). Subsequent layers if necessary it is possible to put 10 minutes after the formation of the previous layer.
Examples 2-3. Use the ratio of compositions 2 and 3, respectively (preferred formulations). Preparation, curing and testing similar to example 1.
Example 4. Use a ratio of composition 4 (control Retz is pture) analogously to example 1.
Use the dosage of thermoplastic elastomer larger than recommended. The resulting solution has a high viscosity and is unsuitable for formation of coatings svobodnovihrevym method or methods of the paint industry.
Example 5. Use a ratio of composition 5 (the control formulation) analogously to example 1.
Uses dosage DST-30-01 smaller than recommended. The composition has low viscosity and is prone to running off from the surface.
Example 6. Use a ratio of composition 6 (the control formulation) analogously to example 1.
Used dosage of triethylene glycol dimethacrylate greater than recommended. The resulting surfaces are prone to cracking and are more brittle.
Example 7. Use a ratio of composition 7 (the control formulation) analogously to example 1.
Used dosage of triethylene glycol dimethacrylate smaller than recommended. The composition is prone to swelling from the surface, applying a composition according to purpose.
Example 8. Use a ratio of composition 8 (the control formulation) analogously to example 1.
Uses dosage 2,2-dimethoxy-1,2-(diphenyl)ethanone greater than recommended. The resulting composite has a surface defects caused by non-uniform shrinkage in the curing process. Due to multiple the defects on the sample surface applying a composition according to purpose.
Example 9. Use a ratio of composition 9 (control formulation) analogously to example 1.
Uses dosage 2,2-dimethoxy-1,2-(diphenyl)ethanone smaller than recommended. The formation of coatings of these compositions is increased to two hours, the samples have a surface tack.
Thus, from the table, and the above examples show that a reasonable replacement of components leads to a significant increase in the rate of formation of protective coatings.
The combination of the adhesion-active oligomer of triethylene glycol dimethacrylate, capable in the formation of coatings to form chemical bonds with thermoplastic elastomer, and a photosensitive 2,2-dimethoxy-1,2-(diphenyl)ethanone initiating the crosslinking reaction DST-30-01, provides technical result - accelerated receipt of anticorrosive coatings.
Thus, the claimed composition is intended for use in the manufacture of protective coatings and free films based solutions butadiene-styrene thermoplastic elastomer in toluene with the addition of TGM-3 and photoinitiator by photoinduced polymerization. For the proposed technical solution confirmed the possibility of its implementation using the steps described in the application of tools and methods.
1. Anticorrosive composition for coatings, including Boo is alien-styrene thermoplastic elastomer mark DST-30-01,
oligomer and a solvent, characterized in that the oligomer use of triethylene glycol dimethacrylate, the solvent is toluene, and further comprises photoinitiator 2,2-dimethoxy-1,2-(diphenyl)Etalon in the following ratio, wt.%:
Butadiene-styrene thermoplastic elastomer mark DST-30-01 - 20-40
Triethylene glycol dimethacrylate - 5-10
2,2-dimethoxy-1,2-(diphenyl)Etalon - 3-5
Toluene - rest
2. A method of obtaining a corrosion-resistant coating of the composition on the basis of butadiene-styrene thermoplastic elastomer mark DST-30-01 by dissolving in toluene oligomer of triethylene glycol dimethacrylate, photoinitiator 2,2-dimethoxy-1,2-(diphenyl)ethanone and thermoplastic elastomer DST-30-01, application of the composition to the surface and the subsequent formation of the coating when exposed to but the composition of the source of UV radiation for 15-20 minutes.
SUBSTANCE: group of inventions relates to a coating composition for metal devices, which provides protection from corrosion, a protective film obtained from said coating composition and use of said coating composition. The coating composition contains ceramic particles which contain at least one corrosion inhibitor, substantially uniformly distributed in each particle. Said corrosion inhibitor is released in the presence of a liquid as a result of solubilisation in said liquid. The coating composition is also characterised by that the ceramic particles are obtained using a sol-gel method to encapsulate the corrosion inhibitor. Said sol-gel method is based on hydrolysis and condensation of corresponding precursors.
EFFECT: controlled release of corrosion inhibitors using ceramic particles for encapsulation thereof, including said particles in a coating composition for coating metal surfaces.
20 cl, 1 tbl, 2 dwg, 13 ex
SUBSTANCE: invention relates to aqueous dispersion paint materials for protecting concrete from corrosion and an aqueous dispersion paint composition. The composition contains a water-base polymeric vinyl acetate-acrylate dispersion, a surfactant, an antifoaming agent - white spirit, a coalescent additive - monoethylene glycol, filler materials, kaolin subjected to ultrasonic treatment, a pigment - rutile titanium dioxide, a thickener - sulfocell, a dispersant - aqueous solution of an ammonium salt of an acrylic copolymer and water.
EFFECT: invention enables to produce an aqueous dispersion protective composition for coating concrete and metal surfaces with improved protective properties, high water-resistance and resistance to acids and sodium chloride and high adhesion to painted surfaces.
SUBSTANCE: organosilicate composition contains polymethylphenylsiloxane as a binding agent, filling agents - talc and chrome oxide, and disubstituted alumophosphate with a specified ratio.
EFFECT: invention makes it possible to obtain a convenient in exploitation organosilicate composition for protective coating with simple technology of production with high heat resistance, resistance to temperature change in a wide range, with possibility of applying the said composition as heat-resistant glue for alumina ceramics, preserving its high adhesion strength after exposure.
2 cl, 2 tbl
SUBSTANCE: impregnation composition comprises an oil polymer resin, a solvent, toluene and antioxidant at the following ratio of components, wt %: oil polymer resin 10-40; toluene 10-20; solvent 50-70; antioxidant 0.5-2.
EFFECT: invention makes it possible to increase physical and chemical characteristics of both the composition itself and the surface of materials treated with it, and to increase guarantee period of the finished impregnation solution.
SUBSTANCE: inventions relate to protection of substrates against corrosion. Claimed is dispersible redispersible or water-soluble mixture for reinforcing construction materials and protection against corrosion, based on, at least, one water-soluble organic polymer and, at least, one organic silicon compound, which contains, at least, one SiOSi-bond, with content of organic polymer constituting approximately from 40 to 80 wt % counted per the sum of organic polymer and organic silicon compound; and organic silicon compound, which contains, at least, one SiOSi-bond, is based on oligomeric mixture of alkylalkoxysiloxanes, which contains from 50 to 100 wt % of alkylalkoxysiloxanes and has oligomerisation degree mainly from 2 to 20, with oligomer mixture of alkylalkoxysiloxanes satisfying the overall formula I: (R")Si(OR"')xOy (I), where groups R" represent similar or different linear, branched or cyclic alkyl radicals with 1-18 carbon atoms, mainly methyl, ethyl, propyl, hexyl, octyl, hexadecyl; groups R"' are similar or different and represent hydrogen or linear or branched alkyl radical with 1-4 carbon atoms, mainly methyl, ethyl, propyl, and 1,0<x<2,0 and 0,5<y≤1,0, on condition that (2y+x)=3.
EFFECT: creation of substance for protection of materials against corrosion, which can be added to dry construction mixtures both in form of powder and in form of liquid preparation, storage stability, ecological friendliness, and absence of interaction or very insignificant interaction with hydraulically binding components.
18 cl, 4 tbl, 7 ex, 3 dwg
SUBSTANCE: invention relates to sol-gel composition for coatings, containing hydrolised organosilane, metal-organic precursor and inhibitor of corrosion, where inhibitor of corrosion represents chelator for metal-organic precursor. Inhibitor of corrosion and metal-organic precursor can form complex in form of nanoparticles. Inhibitor of corrosion can represent diaminobenzoic acid and tetrazine. Composition for coatings can contain one or several additives, selected from antimicrobial additive, hardener, water-repellent additive, dye, additive, resistant to scratching, and flexibility-improving additive. Also described is method of obtaining sol-gel composition for coatings, which includes stages of organosilane hydrolysis in presence of catalyst, chelation of metal-organic precursor, mixing hydrolised silane and chelated metal-organic precursor and hydrolysis of mixture organosilane-metal-organic precursor.
EFFECT: invention makes it possible to obtain coating, which possesses homogeneity, good adhesion, reduced porosity and properties of self-recovery.
20 cl, 30 dwg, 6 tbl, 20 ex
SUBSTANCE: chromium phosphate is obtained in a reactor by dissolving chromium trioxide in water. Orthophosphoric acid and a stabilising additive - ethanol - are then added. A strong reducing agent - aqueous hydrazine-hydrate solution - is slowly added to the obtained mixture of chromic acid, orthophosphoric acid and ethanol in an amount which enables formation and maturation of chromium phosphate particles, suspension pH of 4-7 and concentration of chromium phosphate of 50-100 g/cm. The end product is then filtered and dried. The filtrate is returned to preparation of the mixture of chromium trioxide, orthophosphoric acid and ethanol.
EFFECT: invention simplifies the technique and completely prevents formation of waste water.
1 tbl, 6 ex
SUBSTANCE: anticorrosion pigment is produced from electric furnace wastes from foundry production - aspiration fines, containing, wt %: Fe2O3 63.9-70.0, FeO 7.0-11.32, SiO2 8.9-16, Al2O3 1.45-3.12. The aspiration fines are mixed in dry form with dolomite powder containing magnesium and calcium bicarbonate in amount of 80-95 wt %, with the ratio of aspiration fines to dolomite powder of 60-40:40-60 wt %, respectively. The obtained mixture is calcined for 3-5 hours at temperature of 700-800°C.
EFFECT: invention simplifies production of the anticorrosion pigment and lowers the calcining temperature.
1 tbl, 28 ex
SUBSTANCE: agent contains water and fluorine-containing complex titanium and/or zirconium ions, an anticorrosion pigment, an organic polymer or copolymer which is water-soluble or water-dispersible, which as such in an aqueous solution in concentration of 50 wt % has pH ranging from 1 to 3. The agent also contains a polyvinyl amine with molecular weight greater than 100000 g/mol but not greater than 1000000 g/mol, the degree of acylation of the polyvinyl amines being not less than 80%.
EFFECT: invention improves bonding of a hardened ground coating with a metal surface and subsequent organic coatings.
14 cl, 2 tbl
SUBSTANCE: anticorrosion protective polymer coating contains film-forming ethynol varnish, fine vermiculite filler and a plasticiser, which is divinyl styrene latex SKS-65, in amount of 0.05 pts.wt per 1 pts.wt film-forming agent.
EFFECT: high ductility and temperature stability of the coating, strength of adhesion thereof with boundary materials.
SUBSTANCE: method of producing anticorrosive coating involves preparing the surface of structures of different types to be protected, removing dust from the surface to be protected using compressed air or an industrial vacuum cleaner, defatting the surface with a solvent or alkaline detergent, applying a rubber mixture, a rubber adhesive and a modifying component with a curing agent, which are used in form of a rubber-polymer compound with pre-dissolution thereof in a solvent. The rubber mixture used is a low-hardness rubber mixture GX-2566 which is based on synthetic cis-isoprene rubber SKI-3 gr.1 and synthetic butadiene methyl styrene rubber SKMS-30-ARKM-15 and/or medium-hardness rubber GX-1976 based on synthetic butadiene methyl styrene rubber SKMS-30-ARKM-15, and high-hardness rubber GX-1751 based on synthetic butadiene methyl styrene rubber SKMS-30-ARKM-15 or GX-1627 based on synthetic cis-isoprene rubber SKI-3 gr.1 and synthetic butadiene methyl styrene rubber SKMS-50P, meant for making semi-hard rubber or hard-rubber articles, respectively. The rubber adhesive used is rubber adhesive 2572, which is a solution of a rubber mixture based on synthetic cis-isoprene rubber SKI-3 gr.1 and/or synthetic butadiene methyl styrene rubber SKMS-50P with sulphur, lead oxide and iron oxide additives. The modifying component used is a polymer compound for producing protective coatings at temperature of 20-35°C, which is polyurethane based on organic polyisocyanate, epoxide based on epoxy resin ED-20, polysiloxane based on an inorganic compound of silicon and oxygen; the solvent is nefras S2-80/120. The compound is applied in layers, each having thickness ranging from 0.03 mm to 0.13 mm. The first layers of the compound, which act as the prime coat, are applied with additional dilution of the compound in ratio of up to 6:1. After applying on the surface of the article, the compound is cured in ambient conditions at temperature of 20-35°C or is treated with hot air at temperature of 45-60°C, or with steam at temperature of 97.5-100.5°C at atmospheric pressure.
EFFECT: high adhesion and quality of the coating, high reliability and longevity thereof, simple technique and easier application of the coating, and application of the coating in ambient conditions.
2 cl, 2 dwg, 2 ex
SUBSTANCE: invention relates to a decorative surface coating which can be obtained from a curable composition, wherein said composition contains a first polymer component consisting of a styrene-butadiene styrene block-copolymer (SBS); a second polymer component which is selected from a group consisting of a random or partially random copolymer of butadiene and styrene (SBR) and nitrile butadiene rubber (NBR); a third polymer component consisting of a styrene butadiene copolymer (HSR) having high styrene content, filler, a cured system and additives which are selected from a group consisting of process additives, stabilisers, pigments and substances which stabilise the mixture of immiscible polymers.
EFFECT: improved composition for decorative surface coating which essentially does not contain halogens and is compatible with conventional PVC extrusion equipment.
SUBSTANCE: self-adhesive material has a base - aluminium foil and an adhesive composition applied on said base, having permanent stickiness, containing the following in pts.wt: isoprene-styrene thermoplastic elastomer with 5-7% styrene content 100, an adhesive agent - terpene phenol resin, terpene styrene resin or mixture thereof with perchlorovinyl resin 10-15, plasticiser - epoxidated vegetable oil 7-10 and an organic solvent - ethyl acetate or mixture thereof with benzine and methylene chloride 250-550. The adhesive composition can additionally contain chlorinated polyisoprene rubber in amount of 2-5 pts.wt. The ratio of the thickness of layers the base: adhesive composition is equal to 1:(0.25-1). The self-adhesive material is meant for repair and use at temperatures ranging from -60 to +80°C in aviation, in motorcar and shipbuilding and other engineering fields.
EFFECT: high adhesion strength, cohesive strength of the self-adhesive material, high resistance to static shearing at high temperatures, low labour input and power consumption when carrying out repair works on the surface of aircraft frames and other structures.
3 cl, 2 tbl, 5 ex
SUBSTANCE: invention can be used for long-term protection of chemical equipment from diluted and concentrated acids and alkalis. The anti-corrosion composition contains the following in pts.wt: sealant 51-G10 100, zinc oxide or magnesium oxide 0.01-2.0, stearic or oleic acid 0.01-0.2, sulphur 0.2-5.0, polysulphide oligomer 0.01-2.0, zinc dithiocarbamate 0.1-2.0, diphenylguanidine 0.1-0.5, cyclohexanone 0.5-2.0. Sealant 51-G10 contains a solution of butadiene styrene thermoplastic elastomer DST-30-01 in butylacetate, filer, indene-coumarone resin and aerosil.
EFFECT: invention enables to shorten the duration of the cycle of preparing a homogenous composition to 24 hours without deterioration of operational characteristics of the coating material.
SUBSTANCE: invention relates to polymeric compositions used in making water-proofing and sealing adhesive coatings. The composition contains SKS synthetic non-specific rubber (waste products), bitumen, waste industrial oil, chalk, octophor-N.
EFFECT: composition has water absorption of 0,17-0,19 wt % and relative elongation of 42,80-44,26%.
1 tbl, 2 ex
FIELD: oil producing industry; natural gas industry; production of the anticorrosive primer coating.
SUBSTANCE: the invention represents the anticorrosive primer coating intended for the anticorrosive protection of the steel pipelines predominantly of the oil pipelines and the natural gas pipelines at their building and overhaul and may be used for zone insulation of the welded couplings of the pipes together with the thermal shrink couplings and also for reconditioning of the insulation defects. For increasing the adhesion strength to the polyethylene and the steel as well as the primer coating protection stability against the cathodic spalling at the heightened temperature and slowing down of the underfilm corrosion by the primer coating it contains the butadien-styrene rubber, n-tret- butylphenolformaldehyde pitch, the copolymer of ethylene with the vinylacetate of "Evalan" brand, the mixture of the aminemethyl derivatives of nonylphenols and their hydrochlorides in the ratio from 25:1 up to 1:1, pyrocatechol, magnesium oxide, industrial carbon and the petroleum solvent.
EFFECT: the invention ensures, that the anticorrosive primer coating provides the anticorrosive protection for the oil and natural gas steel pipelines at their building and overhaul, for the pipelines welded couplings areas insulation as well as reconditioning of the insulation defects.
FIELD: polymer materials and corrosion protection.
SUBSTANCE: invention relates to anticorrosive protection of articles, units, and constructions made of ferrous metals, concrete, and reinforced concrete operated under corrosive aqueous and oil-containing media conditions. Composition contains butadiene-styrene thermoplastic elastomer (DST-30R-01) as film-forming component, indene-cumaron resin and epoxide dian resin (ED-20) as adhesive additives, phenyl-2-naphthylamine as amine-type antioxidant, xylene and/or toluene as organic solvent, polymethylsiloxane liquid (PMS-200) as spreading agent, and mixture of cobalt, manganese, and lead octoates as thixotropic additive in the form of 45-55% solution in white spirit or petroleum solvent Nefras C4-155/200, wherein mass percentage of lead is 15.0-15.5% and summary mass percentage of cobalt and manganese is 2.0-2.4%. Composition is thixotropic so that coating with thickness of nondrip wet layer 1.0-1.3 mm may be applied.
EFFECT: increased oil resistance in media of water-saturated petroleum products.
FIELD: polymer materials and corrosion protection.
SUBSTANCE: invention relates to technology of anticorrosive protection of internal surfaces vehicles and stationary metal and concrete storehouses exposed to chemical and abrasive action of loose mineral fertilizers. Composition contains butadiene-styrene thermoplastic elastomer (DST-30R-01), epoxide dian resin (ED-20), indene-cumaron resin, phenyl-2-naphthalene, polymethylsiloxane liquid (PMS-200), pigment filler "Prokal", chromium oxide, tetrabutyl orthotitanate, and organic solvents: toluene and/or xylene. Proposed composition can be applied at negative temperatures and temperature below dew point while anticorrosive coating formed therefrom is less inflammable and is stable in media of wet loose mineral fertilizers.
EFFECT: reduced inflammability and increased resistance to wet loose mineral fertilizers.
FIELD: hydraulic insulating materials for hydraulic insulation and corrosion prevention of concrete, metal and reinforced concrete structural surfaces.
SUBSTANCE: claimed composition contains: butadiene-styrene thermoelastomer, diepoxy resin, filler (carbon black), solvent (toluene), pigment filler, containing aluminum and iron hydroxides and additionally indene-coumarone resin, waterproofing agent (liquid polymethylsiloxane), and stabilizer.
EFFECT: composition with high adhesion to concrete and metal surface and improved strength.
SUBSTANCE: rubber mixture based on butadiene-methyl styrene caoutchouc includes sulphur, diphenylguanidine, sulfene amide C, technical carbon, zinc oxide, stearic acid, as preservative and modifier of 2-(dimethylaminomethyl)-4-methyl-6-(1,7,7-trimethylbicyclo[2.2.1]hept-exo-2-yl)phenol 2-4 wt.p. per 100 wt.p. of caoutchouc.
EFFECT: invention makes it possible to increase confection adhesiveness with preservation of high stability to ageing of rubber mixture vulcanisate.
3 tbl, 1 ex