CN116445016A - Corrosion-resistant environment-friendly paint and preparation method thereof - Google Patents
Corrosion-resistant environment-friendly paint and preparation method thereof Download PDFInfo
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- CN116445016A CN116445016A CN202310371523.6A CN202310371523A CN116445016A CN 116445016 A CN116445016 A CN 116445016A CN 202310371523 A CN202310371523 A CN 202310371523A CN 116445016 A CN116445016 A CN 116445016A
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- inorganic silicon
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- 238000005260 corrosion Methods 0.000 title claims abstract description 39
- 230000007797 corrosion Effects 0.000 title claims abstract description 37
- 239000003973 paint Substances 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 39
- 239000010703 silicon Substances 0.000 claims abstract description 39
- 238000000576 coating method Methods 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 150000001413 amino acids Chemical class 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 16
- 150000004676 glycans Chemical class 0.000 claims abstract description 16
- 229920001282 polysaccharide Polymers 0.000 claims abstract description 16
- 239000005017 polysaccharide Substances 0.000 claims abstract description 16
- 239000007822 coupling agent Substances 0.000 claims abstract description 15
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 15
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000002270 dispersing agent Substances 0.000 claims abstract description 11
- 230000008719 thickening Effects 0.000 claims abstract description 11
- 239000013008 thixotropic agent Substances 0.000 claims abstract description 11
- MTCFGRXMJLQNBG-UHFFFAOYSA-N Serine Natural products OCC(N)C(O)=O MTCFGRXMJLQNBG-UHFFFAOYSA-N 0.000 claims abstract description 7
- MTCFGRXMJLQNBG-REOHCLBHSA-N (2S)-2-Amino-3-hydroxypropansäure Chemical compound OC[C@H](N)C(O)=O MTCFGRXMJLQNBG-REOHCLBHSA-N 0.000 claims abstract description 6
- AYFVYJQAPQTCCC-GBXIJSLDSA-N L-threonine Chemical compound C[C@@H](O)[C@H](N)C(O)=O AYFVYJQAPQTCCC-GBXIJSLDSA-N 0.000 claims abstract description 5
- AYFVYJQAPQTCCC-UHFFFAOYSA-N Threonine Natural products CC(O)C(N)C(O)=O AYFVYJQAPQTCCC-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004473 Threonine Substances 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 39
- 238000002156 mixing Methods 0.000 claims description 26
- 239000011259 mixed solution Substances 0.000 claims description 25
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 15
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 9
- 239000000440 bentonite Substances 0.000 claims description 8
- 229910000278 bentonite Inorganic materials 0.000 claims description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 8
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 8
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 7
- 239000005751 Copper oxide Substances 0.000 claims description 7
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 7
- 239000004952 Polyamide Substances 0.000 claims description 7
- 229910000431 copper oxide Inorganic materials 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims description 7
- 229920002647 polyamide Polymers 0.000 claims description 7
- -1 polyoxyethylene Polymers 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 229920001817 Agar Polymers 0.000 claims description 6
- 229920002472 Starch Polymers 0.000 claims description 6
- 239000008272 agar Substances 0.000 claims description 6
- 239000008107 starch Substances 0.000 claims description 6
- 235000019698 starch Nutrition 0.000 claims description 6
- 239000010881 fly ash Substances 0.000 claims description 5
- 229910021485 fumed silica Inorganic materials 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 229920002101 Chitin Polymers 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000004359 castor oil Substances 0.000 claims description 4
- 235000019438 castor oil Nutrition 0.000 claims description 4
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 4
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 235000010489 acacia gum Nutrition 0.000 claims description 2
- 229920000084 Gum arabic Polymers 0.000 claims 1
- 239000005909 Kieselgur Substances 0.000 claims 1
- 241000978776 Senegalia senegal Species 0.000 claims 1
- 239000000205 acacia gum Substances 0.000 claims 1
- 235000010215 titanium dioxide Nutrition 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 8
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000004408 titanium dioxide Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 238000011056 performance test Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000010883 coal ash Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 241000220479 Acacia Species 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 235000010643 Leucaena leucocephala Nutrition 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000001785 acacia senegal l. willd gum Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000028161 membrane depolarization Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 235000004400 serine Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000008521 threonine Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- 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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of paint, and provides a corrosion-resistant environment-friendly paint and a preparation method thereof. The corrosion-resistant environment-friendly paint provided by the invention comprises the following components in parts by weight: 50-70 parts of modified inorganic silicon solution, 20-40 parts of filler, 1-5 parts of dispersing agent, 1-5 parts of coupling agent and 1-5 parts of thickening thixotropic agent; the modified inorganic silicon solution comprises silicic acid, amino acid, polysaccharide and water, wherein the mass ratio of the silicic acid to the amino acid to the polysaccharide is 3-5: 1 to 3:1 to 3:5 to 10; the amino acid is serine or threonine. The corrosion-resistant environment-friendly coating provided by the invention has the advantages of impact resistance, oxidation resistance, corrosion resistance, water resistance, moisture resistance, quick self-drying, strong adhesive force, long service life and the like, can be applied to pipelines used for underground work, and cannot damage soil environment.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a corrosion-resistant environment-friendly coating and a preparation method thereof.
Background
The paint is a liquid or solid material which can form a film on the surface of an object under certain conditions to protect, decorate or have other special functions (insulation, rust prevention, mildew prevention, heat resistance and the like). The paint has four main functions: protecting, decorating, masking defects and other special functions of the product, and improving the value of the product. With the rapid development of economy, environmental protection consciousness of people is increasingly enhanced, so environmental protection type paint has become the mainstream.
Soil corrosion is the corrosion of metals in the soil. Soil is a special solid electrolyte with capillary porosity. The cathode process of soil corrosion is mainly oxygen depolarization, because oxygen needs to penetrate through the microporous electrolyte of the solid to reach the cathode, the process is complex and is performed slowly, and the structure and humidity of the soil have great influence on the flow of oxygen.
At present, with the gradual penetration of modern construction of the country, underground engineering is rapidly increased, for example, an armguard pipe applied to a distillation tower at the bottom of a construction land, a gas pipeline transported by western gas and the like are all required to adopt anti-corrosion measures, and the preferable anti-corrosion materials cannot damage soil.
Therefore, how to provide an environment-friendly protective coating capable of protecting an underground working pipeline from corrosion is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a corrosion-resistant environment-friendly coating and a preparation method thereof, and aims to solve the technical problem that underground pipelines are easy to corrode.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention provides a corrosion-resistant environment-friendly coating which comprises the following components in parts by weight:
50-70 parts of modified inorganic silicon solution, 20-40 parts of filler, 1-5 parts of dispersing agent, 1-5 parts of coupling agent and 1-5 parts of thickening thixotropic agent;
the modified inorganic silicon solution comprises silicic acid, amino acid, polysaccharide and water, wherein the mass ratio of the silicic acid to the amino acid to the polysaccharide to the water is 3-5: 1 to 3:1 to 3:5 to 10; the amino acid is serine or threonine.
Further, the preparation method of the modified inorganic silicon solution comprises the following steps:
mixing silicic acid, amino acid, polysaccharide and water, and reacting to obtain modified inorganic silicon solution.
Further, the mixing adopts a stirring mode, and the stirring time is 0.5-1 h; the reaction temperature is 40-80 ℃, and the reaction time is 1-3 h.
Further, the filler is one or more of titanium dioxide, aluminum oxide, copper oxide, fly ash, diatomite and bentonite.
Further, the polysaccharide is one or more of starch, acacia, chitin and agar.
Further, the dispersing agent is one or more of polyurethane, polyacrylamide, sodium polyacrylate and polyoxyethylene alkylphenol ether.
Further, the coupling agent is a silane coupling agent and/or a titanate coupling agent.
Further, the thickening thixotropic agent is one or more of fumed silica, castor oil and polyamide wax.
The invention provides a preparation method of the corrosion-resistant environment-friendly paint, which comprises the following steps:
s1, mixing a filler, a dispersing agent and a first part of modified inorganic silicon solution to obtain a mixed solution A;
s2, mixing the coupling agent with the mixed solution A to obtain a mixed solution B;
s3, mixing the rest modified inorganic silicon solution, the thickening thixotropic agent and the mixed solution B to obtain the corrosion-resistant environment-friendly coating.
Further, the temperature of the mixing in the step S1, the step S2 and the step S3 is independently 40-60 ℃, and the mixing time is independently 20-60 min; the volume ratio of the first part of modified inorganic silicon solution to the rest of modified inorganic silicon solution is 3-4: 1.
compared with the prior art, the invention has the following beneficial effects:
in the invention, toxic components and organic solvents are not used, which meets the requirement of environmental protection;
in the invention, the modified inorganic silicon solution adopts a mixed solution of silicic acid, amino acid, polysaccharide and water, the molecular structure of the modified inorganic silicon solution is an inorganic structure, the inorganic modified solution film forming material is more compact, the adhesive force is stronger, the environment is not polluted, the service life is long, and the modified inorganic silicon solution has the dual effects of physical corrosion resistance and chemical corrosion resistance;
in the invention, the filler is cheap and easily available, and the oxide in the filler can accelerate the drying of the film, thereby improving the construction efficiency.
Detailed Description
The invention provides a corrosion-resistant environment-friendly coating which comprises the following components in parts by weight:
50-70 parts of modified inorganic silicon solution, 20-40 parts of filler, 1-5 parts of dispersing agent, 1-5 parts of coupling agent and 1-5 parts of thickening thixotropic agent.
In the present invention, the amount of the modified inorganic silicon solution is preferably 55 to 65 parts, more preferably 58 to 62 parts.
In the present invention, the amount of the filler is preferably 25 to 36 parts, more preferably 30 to 35 parts.
In the present invention, the amount of the dispersant is preferably 2 to 4 parts, more preferably 3 parts.
In the present invention, the coupling agent is used in an amount of preferably 2 to 4 parts, more preferably 3 parts.
In the present invention, the thickening thixotropic agent is preferably used in an amount of 2 to 4 parts, more preferably 3 parts.
In the invention, the modified inorganic silicon solution comprises silicic acid, amino acid, polysaccharide and water, wherein the mass ratio of the silicic acid to the amino acid to the polysaccharide to the water is 3-5: 1 to 3:1 to 3:5 to 10, preferably 4:2:2:6 to 8, more preferably 4:2:2:7, preparing a base material; the amino acid is serine or threonine, preferably serine.
In the invention, the preparation steps of the modified inorganic silicon solution are as follows:
mixing silicic acid, amino acid, polysaccharide and water, and reacting to obtain modified inorganic silicon solution.
In the invention, the mixing adopts a stirring mode, and the stirring time is 0.5-1 h, preferably 0.6-0.9 h, and more preferably 0.7-0.8 h; the reaction temperature is 40-80 ℃, preferably 50-70 ℃, and more preferably 60-65 ℃; the reaction time is 1 to 3 hours, preferably 2 hours.
In the invention, the filler is one or more of titanium dioxide, aluminum oxide, copper oxide, coal ash, diatomite and bentonite, preferably one or more of titanium dioxide, aluminum oxide, copper oxide, coal ash and bentonite, and further preferably one or more of titanium dioxide, aluminum oxide, coal ash and bentonite.
In the present invention, the polysaccharide is one or more of starch, acacia, chitin or agar, preferably one or more of starch, chitin and agar, and more preferably one or more of starch and/or agar.
In the invention, the dispersing agent is one or more of polyurethane, polyacrylamide, sodium polyacrylate and polyoxyethylene alkylphenol-based ether, preferably one or more of polyurethane, polyacrylamide and polyoxyethylene alkylphenol-based ether, and more preferably polyurethane and/or polyoxyethylene alkylphenol-based ether.
In the invention, the coupling agent is a silane coupling agent and/or a titanate coupling agent, and the silane coupling agent is preferably one or more of KH550, KH560, KH570 and KH792, and more preferably one or more of KH560, KH570 and KH 792; the titanate coupling agent is preferably one or more of TMC-102, TMC-201, TMC-105, TMC-311w and TMC-TTS, and more preferably one or more of TMC-102, TMC-105 and TMC-TTS.
In the present invention, the thickening thixotropic agent is one or more of fumed silica, castor oil and polyamide wax, preferably fumed silica and/or polyamide wax, and more preferably polyamide wax.
The invention provides a preparation method of the corrosion-resistant environment-friendly paint, which comprises the following steps:
s1, mixing a filler, a dispersing agent and a first part of modified inorganic silicon solution to obtain a mixed solution A;
s2, mixing the coupling agent with the mixed solution A to obtain a mixed solution B;
s3, mixing the rest modified inorganic silicon solution, the thickening thixotropic agent and the mixed solution B to obtain the corrosion-resistant environment-friendly coating.
In the present invention, the temperature of the mixing in the steps S1, S2 and S3 is independently 40 to 60 ℃, preferably 45 to 55 ℃, and more preferably 48 to 52 ℃; the mixing time is independently 20-60 min, preferably 30-50 min, and more preferably 35-40 min; the volume ratio of the first part of modified inorganic silicon solution to the rest of modified inorganic silicon solution is 3-4: 1, preferably 3:1.
the following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Silicic acid, threonine, starch and water are mixed according to the mass ratio of 4:2:2:7 stirring for 0.5h, and reacting at 60 ℃ for 2h to obtain the modified inorganic silicon solution.
Mixing 24 parts of filler (titanium dioxide, aluminum oxide, copper oxide, fly ash, diatomite and bentonite are equal in mass), 3 parts of polyurethane, 1 part of polyacrylamide and 40 parts of modified inorganic silicon solution at 40 ℃ for 30min to obtain a mixed solution A; mixing 2 parts of KH550, 2 parts of KH560 and the mixed solution A at 40 ℃ for 30min to obtain mixed solution B; 10 parts of modified inorganic silicon solution, 3 parts of fumed silica and the mixed solution B are mixed for 30min at 40 ℃ to obtain the corrosion-resistant environment-friendly coating.
Example 2
Silicic acid, serine, arabic gum and water are mixed according to the mass ratio of 4:2:1:6 stirring for 0.8h, and reacting at 70 ℃ for 1h to obtain the modified inorganic silicon solution.
Mixing 30 parts of filler (titanium dioxide, aluminum oxide, copper oxide, fly ash, diatomite and bentonite are equal in mass), 2 parts of sodium polyacrylate, 2 parts of polyoxyethylene alkylphenol ether and 40 parts of modified inorganic silicon solution at 50 ℃ for 30min to obtain a mixed solution A; mixing 2 parts of KH560, 1 part of KH570 with the mixed solution A at 50 ℃ for 30min to obtain mixed solution B; 10 parts of modified inorganic silicon solution, 2 parts of polyamide wax and the mixed solution B are mixed for 30min at 50 ℃ to obtain the corrosion-resistant environment-friendly coating.
Example 3
Silicic acid, serine, agar and water are mixed according to a mass ratio of 5:3:2:8 stirring for 1h, and reacting at 70 ℃ for 2h to obtain the modified inorganic silicon solution.
36 parts of filler (titanium dioxide, aluminum oxide, copper oxide, fly ash, diatomite and bentonite are equal in mass), 1 part of polyurethane, 3 parts of polyoxyethylene alkylphenol ether and 40 parts of modified inorganic silicon solution are mixed at 55 ℃ for 40min to obtain a mixed solution A; mixing 2 parts of KH570,2 parts of KH792 with the mixed solution A at 55 ℃ for 40min to obtain mixed solution B; 10 parts of modified inorganic silicon solution, 1 part of castor oil, 2 parts of polyamide wax and the mixed solution B are mixed for 40min at 55 ℃ to obtain the corrosion-resistant environment-friendly coating.
Comparative example 1
The comparative example was carried out in the same manner as in example 1 except that no amino acid was added.
Comparative example 2
In this comparative example, no polysaccharide was added, and the rest of the procedure was the same as in example 1.
The performance tests of the corrosion-resistant environmental-friendly coatings prepared in comparative examples 1 to 2 and examples 1 to 3 are shown in Table 1.
TABLE 1 Performance test results of coatings
Wherein, film forming performance test: one-time brushing; accelerated aging performance test: copper salt fog test, test temperature is 50 ℃; corrosion resistance: hydrochloric acid with mass concentration of 5% for 15 days.
As shown in Table 1, the corrosion-resistant environment-friendly coating prepared by the invention has the advantages of denser film formation, stronger adhesive force, higher hardness and better corrosion-resistant effect, can be better applied to pipelines used for underground work, and can not damage soil environment.
Various embodiments in this specification are described in an incremental manner, each embodiment focusing on differences from the other embodiments, the same applies to each embodiment where similar parts are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The corrosion-resistant environment-friendly coating is characterized by comprising the following components in parts by weight:
50-70 parts of modified inorganic silicon solution, 20-40 parts of filler, 1-5 parts of dispersing agent, 1-5 parts of coupling agent and 1-5 parts of thickening thixotropic agent;
the modified inorganic silicon solution comprises silicic acid, amino acid, polysaccharide and water, wherein the mass ratio of the silicic acid to the amino acid to the polysaccharide to the water is 3-5: 1 to 3:1 to 3:5 to 10; the amino acid is serine or threonine.
2. The corrosion resistant environmental protection coating according to claim 1, wherein the modified inorganic silicon solution is prepared by the steps of:
mixing silicic acid, amino acid, polysaccharide and water, and reacting to obtain modified inorganic silicon solution.
3. The corrosion-resistant environment-friendly paint is characterized in that the mixing adopts a stirring mode, and the stirring time is 0.5-1 h; the reaction temperature is 40-80 ℃, and the reaction time is 1-3 h.
4. The corrosion-resistant environment-friendly coating according to any one of claims 1 to 3, wherein the filler is one or more of titanium white, aluminum oxide, copper oxide, fly ash, diatomaceous earth and bentonite.
5. The corrosion resistant environmental protection coating of claim 4, wherein said polysaccharide is one or more of starch, gum arabic, chitin, and agar.
6. The corrosion resistant environmental protection coating according to claim 2 or 5, wherein the dispersant is one or more of polyurethane, polyacrylamide, sodium polyacrylate and polyoxyethylene alkylphenol based ether.
7. The corrosion-resistant environment-friendly coating according to claim 6, wherein the coupling agent is a silane coupling agent and/or a titanate coupling agent.
8. The corrosion resistant environmental protection coating of claim 1 or 5 or 7, wherein said thickening thixotropic agent is one or more of fumed silica, castor oil and polyamide wax.
9. The method for preparing the corrosion-resistant environment-friendly paint according to any one of claims 1 to 8, which is characterized by comprising the following steps:
s1, mixing a filler, a dispersing agent and a first part of modified inorganic silicon solution to obtain a mixed solution A;
s2, mixing the coupling agent with the mixed solution A to obtain a mixed solution B;
s3, mixing the rest modified inorganic silicon solution, the thickening thixotropic agent and the mixed solution B to obtain the corrosion-resistant environment-friendly coating.
10. The preparation method according to claim 9, wherein the temperature of the mixing in the step S1, the step S2 and the step S3 is independently 40-60 ℃, and the mixing time is independently 20-60 min; the volume ratio of the first part of modified inorganic silicon solution to the rest of modified inorganic silicon solution is 3-4: 1.
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| CN107312367A (en) * | 2017-08-07 | 2017-11-03 | 北京志盛威华化工有限公司 | A kind of inorganic high-temperature resistant anticorrosive paint and preparation method thereof |
| CN108102447A (en) * | 2017-11-25 | 2018-06-01 | 浙江大学 | A kind of preparation method and its usage of silica doped modified protective coating |
| CN113956692A (en) * | 2021-12-06 | 2022-01-21 | 深圳市深赛尔股份有限公司 | Anti-corrosion tank-making water-based paint and preparation method thereof |
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| CN107312367A (en) * | 2017-08-07 | 2017-11-03 | 北京志盛威华化工有限公司 | A kind of inorganic high-temperature resistant anticorrosive paint and preparation method thereof |
| CN108102447A (en) * | 2017-11-25 | 2018-06-01 | 浙江大学 | A kind of preparation method and its usage of silica doped modified protective coating |
| CN113956692A (en) * | 2021-12-06 | 2022-01-21 | 深圳市深赛尔股份有限公司 | Anti-corrosion tank-making water-based paint and preparation method thereof |
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