WO2022146168A1 - Нанокомпозитные покрытия, содержащие минеральные наноконтейнеры - Google Patents
Нанокомпозитные покрытия, содержащие минеральные наноконтейнеры Download PDFInfo
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- WO2022146168A1 WO2022146168A1 PCT/RU2020/000787 RU2020000787W WO2022146168A1 WO 2022146168 A1 WO2022146168 A1 WO 2022146168A1 RU 2020000787 W RU2020000787 W RU 2020000787W WO 2022146168 A1 WO2022146168 A1 WO 2022146168A1
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- Prior art keywords
- dipeptide
- hnt
- loaded
- corrosion
- solution
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Links
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 28
- 239000011707 mineral Substances 0.000 title claims abstract description 28
- 238000000576 coating method Methods 0.000 title abstract description 36
- 239000002114 nanocomposite Substances 0.000 title abstract description 12
- 108010016626 Dipeptides Proteins 0.000 claims abstract description 77
- 238000005260 corrosion Methods 0.000 claims abstract description 53
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
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- 229910052621 halloysite Inorganic materials 0.000 claims abstract description 23
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002071 nanotube Substances 0.000 claims abstract description 20
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 2
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- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 description 1
- DEFJQIDDEAULHB-UHFFFAOYSA-N Alanyl-alanine Chemical compound CC(N)C(=O)NC(C)C(O)=O DEFJQIDDEAULHB-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 150000008574 D-amino acids Chemical class 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 150000008575 L-amino acids Chemical class 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920002518 Polyallylamine hydrochloride Polymers 0.000 description 1
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- 238000002441 X-ray diffraction Methods 0.000 description 1
- CQBLUJRVOKGWCF-UHFFFAOYSA-N [O].[AlH3] Chemical compound [O].[AlH3] CQBLUJRVOKGWCF-UHFFFAOYSA-N 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- 150000001243 acetic acids Chemical class 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
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- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical group C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/014—Stabilisers against oxidation, heat, light or ozone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/28—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for wrinkle, crackle, orange-peel, or similar decorative effects
Definitions
- inhibitors of various nature Inventions, one of the most common methods of anticorrosion protection of metals and alloys in contact with an aggressive environment is the use of inhibitors of various nature [5].
- the use of inhibitors does not require a fundamental change in existing technological schemes, provides long-term protection of assemblies, parts and structures, and is justified from an economic point of view [6].
- the introduction of advanced corrosion prevention methods can reduce the economic damage from corrosion by 15-35% (375-875 billion dollars a year).
- a huge number of organic and inorganic compounds have been studied that can affect the rate of corrosion of metals in various media [8–10].
- Organic compounds can also act as inhibitors and cause great scientific and practical interest.
- Organic inhibitors capable of forming protective films on metal surfaces are widely used [14]. This type of inhibitors affect the rate of both cathodic and anodic reactions.
- Most known organic inhibitors are heterocyclic compounds containing polar functional groups (NO2, OH, OCH3, CH3, NH2, COOC2H5 , CONH2, COOH) [15, 16].
- these compounds also have a number of restrictions on their further use due to toxicity [23, 24].
- the technical objective of the invention is to increase the effectiveness of polymer coating compositions in relation to the protection of metals and alloys from corrosion, reduce the toxicity of the composition and improve the protective properties of these coatings.
- a polymer composition of an environmentally friendly coating for protecting metals and alloys from corrosion with an increased duration of the effective action of the coating and a stable service life, with the simultaneous ability of the coating to self-heal from minor mechanical damage (scratches, chips, cracks, etc.) obtained during operation; moreover, such a composition is effective not only in atmospheric conditions, but also in aggressive environments (acids, alkalis, salts),
- the set task and the technical result are achieved by developing a polymer-based composition for anti-corrosion protection and/or decorative finishing of metal surfaces, structures and/or elements of engineering structures, containing environmentally friendly corrosion inhibitors and including the following components:
- HNT halloysite mineral nanotubes
- the composition additionally contains at least one pigment and/or at least one rheological properties regulator and/or at least one plasticizer, introduced in order to impart the required technological and operational properties to the binder and polymer composite material.
- HNT halloysite mineral nanotubes
- the acid is sulfuric, hydrochloric, acrylic, or acetic acid.
- the treatment of the GNT with a 0.5-1.5 M acid solution is carried out to ensure an increase in the diameter of the internal lumen (hole) of the GNT by at least 5%.
- such treatment is carried out at a temperature of not more than 50-70 ° C for 8-72 hours.
- the nanotubes are separated from the solution, washed with distilled or deionized water to pH 6.5-7.5 to remove a possible acid residue, and dried to constant weight at temperature not exceeding 60 °C.
- the loading of at least one dipeptide into the internal cavities of the HNT is carried out in an aqueous suspension containing: HNT treated with an acid solution and at least one dipeptide; with stirring of the resulting suspension for at least 30 minutes (in some particular cases, the suspension is treated with ultrasound), after which the resulting suspension is placed in a vacuum chamber, where at least 3 cycles of pumping air from the vacuum chamber-filling air to atmospheric are carried out pressure.
- the layer-by-layer adsorption of oppositely charged polyelectrolytes on HNTs loaded with at least one dipeptide is carried out by sequentially immersing HNTs loaded with at least one dipeptide (in an amount of 10-20 wt.%) in aqueous solutions (2-4 mg / ml) of oppositely charged polyelectrolytes - first into a solution of a polycation, and then into a solution of a polyanion - with separation, between immersions, of HNT loaded with at least one dipeptide from the solution of the corresponding electrolyte and washing with water and stirring in each of the solutions for not less than 30 min.
- layer-by-layer adsorption of oppositely charged polyelectrolytes on HNT nanoparticles containing at least one encapsulating dipeptide is carried out.
- the adsorption process is carried out by sequential immersion of 10-20 wt.% HNT containing at least one encapsulating dipeptide into a solution of oppositely charged polyelectrolytes (2-4 mg/ml) and stirring for 30 minutes.
- At least one pigment and/or at least one rheology regulator and/or at least one plasticizer are included in some embodiments of the invention.
- HNT loaded with at least one dipeptide and coated with a polyelectrolyte shell is added to a thermosetting polymeric binder in an amount of 1.0-8.0 wt.%.
- a single dipeptide is loaded into the internal cavities of the HNT.
- GNT-based mineral nanocontainers loaded with dipeptides has the prerequisites to become an element of a highly effective and environmentally friendly anticorrosion coating with a self-healing effect due to their inhibitory properties, biocompatibility, low toxicity, environmental safety, and relatively low cost.
- amino acids themselves are a promising class of organic compounds that are environmentally friendly corrosion inhibitors for a wide class of metals in various aggressive media [35–40]. Their basic structure is represented by a-amino groups, a-carboxyl groups, a hydrogen atom and a unique side chain known as an R group, which is linked to a carbon atom (a-C). The R-group determines the functional properties of the amino acid and the selectivity of its action [41]. Due to the presence of heteroatoms (S, N, O) and a system of conjugated tt-bonds in their molecular structure, these acids potentially have a good ability to inhibit corrosion. In addition, amino acids are soluble in an aqueous medium, have a relatively low cost, and can be produced in high purity.
- thermosetting polymer matrix the direct introduction of dipeptides, as well as a number of other bioorganic corrosion inhibitors, into a thermosetting polymer matrix can worsen both their own inhibitory properties and the characteristics of these compositions.
- the solution of these problems in the present invention is provided by the use of the clay mineral halloysite, which acts as a nanocarrier (nanocontainer) for the immobilization of the used dipeptides, as well as a reinforcing nanofiller, which ensures the formation of a branched three-dimensional polymer-reinforced structure with improved physical and mechanical properties.
- the clay mineral halloysite acts as a nanocarrier (nanocontainer) for the immobilization of the used dipeptides, as well as a reinforcing nanofiller, which ensures the formation of a branched three-dimensional polymer-reinforced structure with improved physical and mechanical properties.
- halloysite is a multilayer nanotube with an outer diameter of about 30-190 nm, an inner diameter of 10-100 nm and a length of 0.7-30 ⁇ m, consisting of layers of silicon-oxygen tetrahedra and aluminum-oxygen octahedra.
- This mineral has a large specific surface area, high ion-exchange capacity, chemical and thermal stability, and the ability to firmly retain substances adsorbed on the inner surface of nanotubes.
- Halloysite is a natural aluminosilicate mineral representing multilayer nanotubes with an outer diameter of about 30–190 nm, an inner diameter of 10–100 nm, and a length of 0.7–30 ⁇ m [43].
- Halloysite like many other clays, is widespread in the rocks of the sedimentary cover of the earth's crust.
- GNT is non-toxic to living organisms, which was confirmed in recent experiments in vitro and in vivo [44, 45], and does not pollute the environment, due to which, as well as its structural features, GNT seems to be a promising and cheaper alternative to synthetic analogues (in particular, , carbon nanotubes).
- halloysite nanotubes are characterized by a large specific surface area, high surface reactivity, and high mechanical strength.
- GNTs are used to isolate dipeptides from the coating material, control the dynamics of their release, and improve the physical and mechanical properties of the coating. This is achieved by preloading dipeptides into the internal cavities of the HNT, followed by the creation of a shell of polyelectrolytes on the surface of the HNT in order to provide a pH-sensitive release of the encapsulated inhibitor.
- preliminary acid treatment (activation) of halloysite nanotubes is carried out in order to increase the diameter of the inner lumen (hole) due to the dissolution of alumina.
- the treatment is carried out with a relatively mild effect (0.5-1.5 M solution) of acid in order to limit significant structural changes in halloysite, since exposure to a concentrated acid solution can worsen the mechanical properties of GNT due to wall thinning.
- Any (including strong or weak, organic or inorganic) acid can be used as an acid, for example, but not limited to, treatment can be carried out with a 0.5-1.5 M solution of sulfuric, hydrochloric, acrylic or acetic acids.
- the treatment of the GNT with an acid solution is carried out to ensure an increase in the diameter of the internal lumen (hole) of the GNT by at least 5%.
- This process can be controlled by analytical methods (eg, transmission electron microscopy, scanning electron microscopy, x-ray diffraction, infrared spectroscopy) by recording structural and morphological signs of alumina dissolution.
- the amount of acid solution is chosen so as to ensure the treatment of the entire mass of HNT, for example, effective treatment can be achieved with a ratio of HNT and acid solution from 1:50 to 1:200, but is not limited to this.
- ultrasonication can be carried out for at least 30 minutes to homogenize the suspension and subsequent constant stirring at a temperature of 50-70°C for no more than 72 hours.
- the resulting HNT/dipeptide complexes are separated (by filtration or centrifugation) from the solution, washed with water to remove the excess inhibitor on the outer surface of the HNT, dried to constant weight at a temperature not exceeding 60°C, and ground to a powder.
- a single immersion in each of the solutions is sufficient; in some embodiments of the invention, in order to provide a delayed kinetics of pH-sensitive release of the encapsulated corrosion inhibitor, it is possible to repeat successive immersion in solutions of oppositely charged polyelectrolytes 2 or more times. At the same time, between immersions in each of the HNT solutions loaded with dipeptides, they are separated from the previous solution by centrifugation and washed with water to remove excess non-adsorbed polyelectrolyte.
- the resulting mineral nanocontainers with encapsulated dipeptides are separated (by filtration or centrifugation) from the solution, washed with water to remove excess polyelectrolyte, dried to constant weight at a temperature of no more than 60°C, and crushed to a powder state.
- the resulting composition is applied to the protected metal surface (substrate), followed by keeping on the substrate until the coating is cured.
- the composition can be applied by spraying, brushing, dipping.
- the proposed nanocomposite polymer coatings can be used for anti-corrosion protection of a wide variety of metal products, such as metal structures and elements of engineering structures, metal parts, assemblies and assemblies of various branches of technology, decorative finishing of these protected surfaces operated in aggressive environments (acids, alkalis, salts) , as well as in atmospheric conditions and in water.
- Fig. 1 shows a flow chart of the procedure for preparing the disclosed nanocomposite coating containing mineral nanocontainers to protect metal surfaces from corrosion.
- metal means made of a metal (eg, but not limited to iron, copper) or a metal-based alloy (eg, but not limited to cast iron, steel).
- Dipeptide an organic compound consisting of two amino acid residues linked by a peptide bond.
- dipeptides consisting of any two amino acids (both L-amino acids and D-amino acids), including both natural and non-natural, can be used.
- dipeptides of standard (proteinogenic) amino acids, dipeptides of non-standard amino acids, and any combination thereof, including dipeptides consisting of the same amino acids (eg, alanine-alanine) can be used.
- a composition according to the invention can be used as one dipeptide, and a mixture of two or more dipeptides.
- the ratio of dipeptides in the mixture can be any - from 0.1 to 99.9 wt.%; in some particular embodiments of the invention, the ratio of dipeptides in the mixture may be equal, i.e. for example 1:1 (for two dipeptides) or 1:1:1 (for three dipeptides).
- Thermosetting polymer binder is a two- or multi-component system consisting of a synthetic resin (polymer or oligomeric component) and hardeners or initiators, catalysts, curing accelerators.
- Thermosetting polymeric binders are well known in the art, the composition of the binder depends on the mechanism of the curing reaction and on the required mechanical properties of the cured product.
- a sample of natural halloysite with a fraction of less than 2 ⁇ m was mixed with a 1 M solution of H2SO4 at a phase ratio of HNT and acid solution of 1:100 and sonicated for 30 minutes to homogenize the suspension, followed by constant stirring at a temperature of 50°C within 48 hours.
- the solution was separated by filtration from the solid residue, which was washed with water to remove a possible acid residue (up to pH 7), then dried to constant weight at a temperature of 60°C, and ground to a powder.
- Loading of the dipeptide (glycine-alanine) into the internal cavities of the HNT was carried out by means of vacuum infiltration in an aqueous suspension, in a ratio of 1:1 by weight of the dipeptide to the HNT.
- the vessel with the resulting suspension was placed in a vacuum chamber, where 3 cycles of evacuation of air from the vacuum chamber to -1.0 atm for 30 minutes were carried out - air was filled to atmospheric pressure.
- the halloysite nanotubes with the loaded dipeptide were separated from the solution by centrifugation at 8000 rpm and washed three times in deionized water to remove the excess loaded inhibitor. Then they were dried at 60°C for 18 h and ground to a powder state.
- Polyelectrolyte shells were obtained by successive adsorption in solutions at a concentration of 2 mg/mL of oppositely charged polyelectrolytes (polyallylamine hydrochloride and sodium polystyrenesulfonate) on the surface of HNT loaded with the dipeptide. Each adsorption step was followed by washing the particles three times with deionized water to remove unbound polyelectrolyte. The solid residue was separated from the solution by centrifugation at 8000 rpm. Next, the samples were dried at 60°C for 18 h and ground to a powder state.
- polyelectrolytes polyallylamine hydrochloride and sodium polystyrenesulfonate
- the prepared mineral nanocontainers with encapsulated dipeptide (5.0 wt.%) and epoxy diano resin (87.0 wt.%) were mixed for 10 min in a dispersing unit at a frequency of 300 rpm , and then mixed with an amine hardener (8.0 wt.%) and mixed for 10 minutes in an ultrasonic unit.
- Example 2 For corrosion tests, copper plates 150x50x2 mm in size, pre-treated with sandpaper and degreased with ethanol, were used. The coating was applied in one layer by spraying. Before testing, the coated samples were kept in air for 72 hours at 20 ⁇ 2°C and relative air humidity of 50%.
- Example 2 For corrosion tests, copper plates 150x50x2 mm in size, pre-treated with sandpaper and degreased with ethanol, were used. The coating was applied in one layer by spraying. Before testing, the coated samples were kept in air for 72 hours at 20 ⁇ 2°C and relative air humidity of 50%.
- Example 2 Example 2
- test results obtained in accordance with example 1 samples are shown in table 1.
- a control sample was prepared according to the method described in example 1, without adding mineral nanocontainers with encapsulated dipeptide.
- the concentration of copper ions in the solution, caused by the corrosion process is significantly reduced when using a coating containing mineral nanocontainers with an encapsulated dipeptide, which indicates their ability to inhibit corrosion during mechanical damage.
- the combination of essential features of the proposed coating provides an increase in the effectiveness of protection of metal surfaces from corrosion, as well as a decrease in negative environmental consequences associated with the abandonment of the use of toxic and environmentally hazardous inhibitors (chromates, petroleum oils, lubricants, etc.), the transition to "green " protective compositions based on safe inhibitors for the environment and human health, as well as the transition to "smart" protective coatings with a self-healing effect.
- toxic and environmentally hazardous inhibitors chromates, petroleum oils, lubricants, etc.
- the advantage of the proposed anti-corrosion nanocomposite coating is its environmental safety, the ability not to lose its properties during operation and to keep them for a long period of time.
- the proposed nanocomposite coating is effective for protecting various metal surfaces, including, but not limited to, copper, nickel, and steel. While the invention has been described with reference to the disclosed embodiments, it should be apparent to those skilled in the art that the specific experiments described in detail are for the purpose of illustrating the present invention only and should not be construed as limiting the scope of the invention in any way. It should be clear that it is possible to carry out various modifications without departing from the essence of the present invention.
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RU2248385C1 (ru) * | 2004-01-23 | 2005-03-20 | Закрытое акционерное общество "Техно-ТМ" | Способ получения полисиликатного связующего для клеев и покрытий, полисиликатное связующее, клеевая композиция для клеев и покрытий на его основе |
RU2394058C2 (ru) * | 2008-07-23 | 2010-07-10 | Закрытое Акционерное Общество "Базальтопластик" | Полимерная композиция для защитного антикоррозионного покрытия барьерного типа |
US20160090487A1 (en) * | 2013-05-23 | 2016-03-31 | C.R.F. Societa' Consortile Per Azioni | A coating composition for metal surfaces with enhanced corrosion resistance properties |
CN109504242A (zh) * | 2018-12-08 | 2019-03-22 | 郑州师范学院 | 一种在酸性环境中可自动修复防腐涂层及其制备方法 |
CN110791761A (zh) * | 2018-08-01 | 2020-02-14 | 天津大学 | 高装载量埃洛石纳米管-苯并三唑复合缓蚀剂及其制备方法和应用 |
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RU2248385C1 (ru) * | 2004-01-23 | 2005-03-20 | Закрытое акционерное общество "Техно-ТМ" | Способ получения полисиликатного связующего для клеев и покрытий, полисиликатное связующее, клеевая композиция для клеев и покрытий на его основе |
RU2394058C2 (ru) * | 2008-07-23 | 2010-07-10 | Закрытое Акционерное Общество "Базальтопластик" | Полимерная композиция для защитного антикоррозионного покрытия барьерного типа |
US20160090487A1 (en) * | 2013-05-23 | 2016-03-31 | C.R.F. Societa' Consortile Per Azioni | A coating composition for metal surfaces with enhanced corrosion resistance properties |
CN110791761A (zh) * | 2018-08-01 | 2020-02-14 | 天津大学 | 高装载量埃洛石纳米管-苯并三唑复合缓蚀剂及其制备方法和应用 |
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