CN116535944A - Corrosion-resistant pressure pipeline - Google Patents
Corrosion-resistant pressure pipeline Download PDFInfo
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- CN116535944A CN116535944A CN202310700393.6A CN202310700393A CN116535944A CN 116535944 A CN116535944 A CN 116535944A CN 202310700393 A CN202310700393 A CN 202310700393A CN 116535944 A CN116535944 A CN 116535944A
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- China
- Prior art keywords
- corrosion
- organic framework
- metal organic
- resistant coating
- pressure pipe
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- 238000005260 corrosion Methods 0.000 title claims abstract description 107
- 230000007797 corrosion Effects 0.000 title claims abstract description 104
- 239000012621 metal-organic framework Substances 0.000 claims abstract description 94
- 238000000576 coating method Methods 0.000 claims abstract description 63
- 239000011248 coating agent Substances 0.000 claims abstract description 62
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003822 epoxy resin Substances 0.000 claims abstract description 31
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 31
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 17
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 54
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 27
- 239000012964 benzotriazole Substances 0.000 claims description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 26
- 239000000178 monomer Substances 0.000 claims description 26
- 239000003945 anionic surfactant Substances 0.000 claims description 18
- 239000002244 precipitate Substances 0.000 claims description 18
- 238000012986 modification Methods 0.000 claims description 14
- 230000004048 modification Effects 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- 239000000654 additive Substances 0.000 claims description 13
- 230000000996 additive effect Effects 0.000 claims description 13
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 12
- 239000000344 soap Substances 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 235000019441 ethanol Nutrition 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- -1 imidazole ester Chemical class 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 4
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 4
- 125000002723 alicyclic group Chemical group 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 3
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 17
- 229920000128 polypyrrole Polymers 0.000 description 15
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 239000000203 mixture Substances 0.000 description 11
- 229940040452 linolenate Drugs 0.000 description 8
- DTOSIQBPPRVQHS-PDBXOOCHSA-M linolenate Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC([O-])=O DTOSIQBPPRVQHS-PDBXOOCHSA-M 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 239000003513 alkali Substances 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- 238000006116 polymerization reaction Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000002161 passivation Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000009210 therapy by ultrasound Methods 0.000 description 3
- OYHQOLUKZRVURQ-HZJYTTRNSA-M 9-cis,12-cis-Octadecadienoate Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC([O-])=O OYHQOLUKZRVURQ-HZJYTTRNSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 2
- 229940049918 linoleate Drugs 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 description 1
- 235000020661 alpha-linolenic acid Nutrition 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000001072 heteroaryl group Chemical group 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229960004488 linolenic acid Drugs 0.000 description 1
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004804 winding Methods 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/04—Epoxynovolacs
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C09D7/40—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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The application relates to a corrosion-resistant pressure pipeline, and relates to the technical field of pipelines; the corrosion-resistant pressure pipeline comprises a pressure pipeline body and a corrosion-resistant coating, wherein the corrosion-resistant coating is obtained by coating the inner wall of the pressure pipeline body with a corrosion-resistant coating, and the corrosion-resistant coating comprises the following components in percentage by mass: 42-54% of epoxy resin, 12-18% of metal organic framework, 0.3-1% of auxiliary agent and 100% of toluene; the corrosion-resistant coating produced by taking the metal organic framework as one of the raw materials is coated on the inner wall of the pressure pipeline body, so that the pressure pipeline has better corrosion resistance.
Description
Technical Field
The application relates to the technical field of pipelines, in particular to a corrosion-resistant pressure pipeline.
Background
Pressure conduit means a conduit capable of withstanding a certain internal or external pressure, the pressure conduit having the functions of conveying, distributing, mixing, separating, discharging, metering, controlling and stopping the flow of fluid.
The pressure pipeline is generally made by mixing pig iron, refining agent and alloy doping components. When the pressure pipeline is used for chemical fluid transportation, the fluid medium transported by the pressure pipeline has the characteristics of toxicity, corrosiveness, inflammability, explosiveness and the like, so that the inner wall of the pressure pipeline is easy to corrode. Once the pressure pipeline is corroded, perforation occurs, so that fluid medium conveyed by the pressure pipeline leaks to the outside, and environmental pollution is caused.
Disclosure of Invention
In order to improve the corrosion-resistant effect of the pressure pipeline, the application provides a corrosion-resistant pressure pipeline.
The application provides a corrosion-resistant pressure pipeline adopts following technical scheme:
the corrosion-resistant pressure pipeline comprises a pressure pipeline body and a corrosion-resistant coating, wherein the corrosion-resistant coating is obtained by coating the inner wall of the pressure pipeline body with the corrosion-resistant coating, and the corrosion-resistant coating comprises the following components in percentage by mass: 42-54% of epoxy resin, 12-18% of metal organic framework, 0.3-1% of auxiliary agent and 100% of toluene.
By adopting the technical scheme, the corrosion-resistant coating produced by taking the metal organic framework as one of the raw materials is coated on the surface of the pressure pipeline body, so that the pressure pipeline has excellent corrosion resistance, the actual use effect is good, and the specific scheme is analyzed as follows:
firstly, the metal organic framework contains a large amount of heteroaromatic, so that the metal organic framework has better corrosion resistance, and when the metal organic framework is used as a filler to be distributed in the corrosion-resistant coating, the corrosion resistance of the corrosion-resistant coating on the pressure pipeline can be improved.
And secondly, the epoxy resin is adopted as a main component of the corrosion-resistant coating, a three-dimensional network structure is formed after the epoxy resin is cured, the compatibility with a metal organic framework with a benzene ring and other structures is good, space winding is realized structurally, the fluidity is reduced, the stability of the metal organic framework on the surface of the pressure pipeline body is improved, and the corrosion resistance of the corrosion-resistant coating and the combination firmness between the pressure pipeline body are effectively improved.
Preferably, the metal-organic framework is prepared after modification treatment, and the modification treatment method of the metal-organic framework is as follows:
and adding the metal organic framework into a mixed solution of absolute ethyl alcohol and deionized water, then adding pyrrole monomers, fully stirring, performing centrifugal separation to obtain a precipitate, and finally sequentially cleaning and drying the precipitate to obtain the primary modified metal organic framework.
Through adopting above-mentioned technical scheme, firstly, when metal organic skeleton and pyrrole monomer mix the back, metal in the metal organic skeleton takes place the oxidation and can make the pyrrole monomer carry out the polymerization on metal organic skeleton surface for the surface of metal organic skeleton generates and has the polypyrrole shell, and the polypyrrole that the pyrrole monomer polymerization formed has better anticorrosive effect to the pressure pipeline body, and the passivation effect of polypyrrole makes the metal in the metal organic aggregate form the metal passivation layer, and the metal passivation layer has better anticorrosive effect to the pressure pipeline body. The passivation effect of polypyrrole and the inhibition effect of the metal passivation layer in the metal organic framework are organically combined, so that the corrosion resistance effect of the corrosion-resistant coating can be effectively improved.
Secondly, since polypyrrole formed by polymerization of pyrrole monomers is easily adhered to each other, massive agglomeration occurs, and polypyrrole molecular chains are highly rigid and insoluble, so that conventional stirring and ultrasonic treatment cannot separate polypyrrole particles adhered to each other when polypyrrole formed by polymerization of pyrrole monomers is added as a filler to a corrosion-resistant coating matrix. At the moment, the metal organic framework participates in the polymerization reaction of pyrrole monomers, and the metal organic framework can play a role of a form guiding agent, so that polypyrrole can only be generated on the surface of the metal organic framework, the mutual adhesion among polypyrroles is reduced, the dispersion of the polypyrroles is improved, and the anti-corrosion effect of the coating is improved.
Preferably, in the modification treatment method of the metal-organic framework, the primary modification treatment method further comprises the following steps:
adding benzotriazole into ethanol solution, then adding the primary modified metal organic framework, fully stirring, performing centrifugal separation to obtain a precipitate, and finally sequentially cleaning and drying the precipitate to obtain the modified metal organic framework.
By adopting the technical scheme, when the metal organic framework is used as an oxidant for pyrrole polymerization reaction, and according to the in-situ nucleation effect of the metal organic framework, the polypyrrole shell is generated on the surface of the metal organic framework, and meanwhile, the metal organic framework is decomposed to a certain extent, so that the metal organic framework is reversely etched, and the rough structure is formed on the surface of the primary modified metal organic framework and the vacancy defect exists in the primary modified metal organic framework.
At the moment, after the benzotriazole and the primary modified metal-organic framework are mixed, the benzotriazole is loaded on the primary modified metal-organic framework, so that when the pressure pipeline is corroded, the benzotriazole is adsorbed on the surface of the pressure pipeline through the lone pair electron of the nitrogen heteroatom of the benzotriazole and the empty d orbit sharing surface of metal ions dissolved out from the corrosion wastewater on the inner wall of the pressure pipeline to form a protective layer, and further the corrosion resistance effect of the corrosion-resistant coating is further improved.
In addition, the mutual coordination of the benzotriazole and the polypyrrole has an accelerating effect on the corrosion resistance effect of the metal organic framework serving as the filler to be filled in the corrosion-resistant coating.
Preferably, the mass ratio of the metal organic framework to the pyrrole monomer to the benzotriazole is 0.1 (2.2-2.8) to 3.6-4.2.
By adopting the technical scheme, the mass ratio of the metal organic framework, the pyrrole monomer and the benzotriazole is controlled within the range, so that the corrosion resistance effect of the corrosion-resistant coating can be effectively improved.
Preferably, the auxiliary agent comprises an anionic surfactant and an additive, wherein the anionic surfactant accounts for 0.1-0.3% of the total amount of the corrosion-resistant coating.
Through adopting above-mentioned technical scheme, at first, anionic surfactant negatively charges, and contains the metal component in the pressure pipeline body, and the suction effect of positive negative charge can improve the adhesion of corrosion-resistant coating and pipeline body surface, prolongs the pipeline corrosion-resistant life-span.
Secondly, because the brittleness of the epoxy resin is greater, and when the anionic surfactant additive is in the corrosion-resistant coating system, the anionic surfactant can play a plasticizing role in the epoxy resin, thereby improving the stability of the corrosion-resistant coating.
Preferably, the anionic surfactant is one or more of sodium dodecyl benzene sulfonate, sodium stearate and calcium lignin sulfonate.
Preferably, the additive consists of butyl acrylate, organic silicon and linolenic acid soap according to the mass ratio of 1:1 (0.7-1.3).
By adopting the technical scheme, butyl acrylate is used as a leveling agent in the corrosion-resistant coating, so that the surface tension of the corrosion-resistant coating can be reduced, and a smooth corrosion-resistant coating can be formed; the organic silicon is used as a defoaming agent in the corrosion-resistant coating, so that the formation of bubbles in the corrosion-resistant coating can be reduced; the linolenate soap is used as a flatting agent in the corrosion-resistant coating, so that the drying time of the corrosion-resistant coating coated on the pressure pipe body can be effectively prolonged, the mass ratio of butyl acrylate to organosilicon to linolenate soap is controlled within the range, and the corrosion-resistant effect of the coating can be effectively improved.
Preferably, the epoxy resin is one or more of phenolic epoxy resin, alicyclic epoxy resin and aromatic epoxy resin.
Preferably, the metal organic framework is a zeolite-like imidazole ester framework.
Preferably, the preparation method of the corrosion-resistant coating comprises the following steps:
and mixing the epoxy resin, the metal-organic framework, the auxiliary agent and the toluene, and uniformly stirring to prepare the corrosion-resistant coating.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the metal organic framework has better corrosion resistance effect, so that the corrosion resistance of the corrosion-resistant coating on the pressure pipeline can be improved; the epoxy resin is solidified to form a three-dimensional network structure, so that the stability of the metal organic framework on the surface of the pressure pipeline body is improved, and the corrosion resistance of the corrosion-resistant coating and the combination firmness between the pressure pipeline body are effectively improved.
2. The anionic surfactant is negatively charged, and the pressure pipeline body contains metal components, so that the attraction effect of positive and negative charges can improve the adhesiveness between the corrosion-resistant coating and the surface of the pipeline body, and the corrosion-resistant service life of the pipeline is prolonged.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a corrosion-resistant pressure pipe according to an embodiment of the present application.
1. A pressure pipe body; 2. a corrosion resistant coating.
Detailed Description
The embodiment of the application discloses a corrosion-resistant pressure pipeline. Referring to fig. 1, the corrosion-resistant pressure pipe includes a pressure pipe body 1 and a corrosion-resistant coating 2, the corrosion-resistant coating 2 being obtained by applying a corrosion-resistant coating to an inner wall of the pressure pipe body 1.
Example 1
The corrosion-resistant coating comprises the following raw materials in parts by weight: 48g of epoxy resin, 15g of metal organic framework, 0.7g of auxiliary agent and 36.3g of toluene.
The preparation method of the corrosion-resistant coating comprises the following steps:
and mixing the epoxy resin, the metal-organic framework, the auxiliary agent and the toluene, and uniformly stirring to prepare the corrosion-resistant coating.
Wherein the epoxy resin is phenolic epoxy resin, and the metal organic framework is zeolite-like imidazole ester framework; the auxiliary agent comprises 0.2g of anionic surfactant and 0.5g of additive, wherein the anionic surfactant is sodium dodecyl benzene sulfonate, the additive is a mixture of butyl acrylate, organic silicon and linolenate soap, and the mass ratio of the butyl acrylate to the organic silicon to the linolenate soap is 1:1:1.
Example 2
The corrosion-resistant coating comprises the following raw materials in parts by weight: 42g of epoxy resin, 12g of metal organic framework, 0.3g of auxiliary agent and 45.7g of toluene.
The preparation method of the corrosion-resistant coating comprises the following steps:
and mixing the epoxy resin, the metal-organic framework, the auxiliary agent and the toluene, and uniformly stirring to prepare the corrosion-resistant coating.
Wherein the epoxy resin is a mixture of 20g of phenolic epoxy resin and 22g of alicyclic epoxy resin, and the metal organic framework is a zeolite-like imidazole ester framework; the auxiliary agent comprises 0.1g of anionic surfactant and 0.2g of additive, wherein the anionic surfactant is sodium stearate, the additive is a mixture of butyl acrylate, organic silicon and linolenate soap, and the mass ratio of the butyl acrylate to the organic silicon to the linolenate soap is 1:1:0.7.
Example 3
The corrosion-resistant coating comprises the following raw materials in parts by weight: 54g of epoxy resin, 18g of metal-organic framework, 1g of auxiliary agent and 27g of toluene.
The preparation method of the corrosion-resistant coating comprises the following steps:
and mixing the epoxy resin, the metal-organic framework, the auxiliary agent and the toluene, and uniformly stirring to prepare the corrosion-resistant coating.
Wherein the epoxy resin is aromatic epoxy resin, and the metal organic framework is zeolite-like imidazole ester framework; the auxiliary agent comprises 0.3g of anionic surfactant and 0.7g of additive, wherein the anionic surfactant is a mixture of 0.15g of sodium stearate and 0.15g of calcium lignosulfonate, the additive is a mixture of butyl acrylate, organic silicon and linolenate soap, and the mass ratio of the butyl acrylate to the organic silicon to the linolenate soap is 1:1:1.3.
Example 4
Example 4 differs from example 1 in that: the metal organic framework is prepared after modification treatment, and the modification treatment method of the metal organic framework is as follows:
the modified metal organic framework comprises the following raw materials in parts by weight: 1g of metal organic framework, 25g of pyrrole monomer and 39g of benzotriazole.
The preparation method of the modified metal organic framework comprises the following steps:
s1, dispersing a metal organic framework in 9000mL of a mixed solution of absolute ethyl alcohol and deionized water (the volume ratio of the absolute ethyl alcohol to the deionized water is 1:5), adding pyrrole monomers to prepare a mixture, carrying out ultrasonic treatment on the mixture for 10min, carrying out vigorous stirring reaction for 6h at a water bath of 50 ℃, carrying out centrifugal separation at a rotating speed of 6000r/min to obtain a precipitate, washing the precipitate with the absolute ethyl alcohol for three times, and then drying the precipitate in a vacuum environment of 60 ℃ to obtain a primary modified metal organic framework;
s2, adding the primary modified metal organic framework and benzotriazole into 2000mL of ethanol solution (the mass concentration of the ethanol solution is 75%), stirring for 6h, centrifugally separating at a rotation speed of 5000r/min to obtain a precipitate, washing the precipitate with deionized water, and finally drying in a vacuum environment at 60 ℃ to obtain the modified metal organic framework.
Example 5
Example 5 differs from example 4 in that: 1g of metal organic framework, 22g of pyrrole monomer and 42g of benzotriazole.
Example 6
Example 6 differs from example 4 in that: 1g of metal organic framework, 28g of pyrrole monomer and 36g of benzotriazole.
Example 7
Example 7 differs from example 4 in that: 1.12g of metal organic framework, 20.17g of pyrrole monomer and 43.71g of benzotriazole.
Example 8
Example 8 differs from example 4 in that: 0.9g of metal organic framework, 28.89g of pyrrole monomer and 35.21g of benzotriazole.
Example 9
Example 9 differs from example 4 in that: 1.12g of metal organic framework, 28.02g of pyrrole monomer and 35.86g of benzotriazole.
Example 10
Example 10 differs from example 4 in that: 0.9g of metal organic framework, 22.57g of pyrrole monomer and 41.53g of benzotriazole.
The difference between comparative example 1 and example 4 is that: the metal organic framework is prepared after modification treatment, and the modification treatment method of the metal organic framework is as follows:
the modified metal organic framework comprises the following raw materials in parts by weight: 10g of metal organic framework and 64g of pyrrole monomer.
The preparation method of the modified metal organic framework comprises the following steps:
dispersing the metal organic framework in 9000mL of a mixed solution of absolute ethyl alcohol and deionized water (the volume ratio of the absolute ethyl alcohol to the deionized water is 1:5), adding pyrrole monomers to prepare a mixture, carrying out ultrasonic treatment on the mixture for 10min, carrying out vigorous stirring reaction for 6h under a water bath at 50 ℃, carrying out centrifugal separation at a rotating speed of 6000r/min to obtain a precipitate, washing the precipitate with the absolute ethyl alcohol for three times, and then drying the precipitate in a vacuum environment at 60 ℃ to obtain the modified metal organic framework.
Comparative example 2
The difference between comparative example 2 and example 4 is that:
the metal organic framework is prepared after modification treatment, and the modification treatment method of the metal organic framework is as follows:
the modified metal organic framework comprises the following raw materials in parts by weight: 10g of metal organic framework and 64g of benzotriazole.
The preparation method of the modified metal organic framework comprises the following steps:
s2, adding the metal organic framework and the benzotriazole into 2000mL of ethanol solution (the mass concentration of the ethanol solution is 75%), stirring for 6h, centrifugally separating at a rotation speed of 5000r/min to obtain a precipitate, washing the precipitate with deionized water, and finally drying in a vacuum environment at 60 ℃ to obtain the modified metal organic framework.
Comparative example 3
The difference between comparative example 3 and example 4 is that:
the auxiliary agent is an additive, the additive is a mixture of butyl acrylate, organic silicon and linoleate soap, and the mass ratio of the butyl acrylate to the organic silicon to the linoleate soap is 1:1:1.
Performance test:
1. corrosion resistance detection
(1) Salt water resistance test
The pressure pipe coated with the paint was sampled five times, the time required for complete corrosion at 20% NaCl was calculated, the results were averaged, and the detection results were recorded in table 1.
(2) Acid resistance test
The pressure pipe coated with the paint was sampled five times, the time required for complete corrosion under 50% concentrated sulfuric acid was calculated, the results were averaged, and the detection results were recorded in table 1.
(3) Alkali resistance test
The pressure pipe coated with the paint was sampled five times, the time required for complete corrosion under 10% NaOH was calculated, the results were averaged, and the detection results were recorded in table 1.
2. Adhesion performance detection: the adhesion of the coatings was tested according to the paint film adhesion assay of GB/T1720-1979 (1989) and the test results are recorded in Table 1.
TABLE 1
Data analysis:
from the specific combination of the test results of examples 1-3 and example 4, the salt resistance of examples 1-3 was > 2653h, the acid resistance was > 2123h, the alkali resistance was > 2226h, the salt resistance of example 4 was > 3280h, the acid resistance was > 2623h, and the alkali resistance was > 2788h, and it can be seen that the corrosion resistance of example 4 was superior to that of examples 1-3, as follows: example 4 differs from examples 1-3 in that: the metal organic framework is modified by pyrrole monomers and benzotriazole, so that the metal organic framework with polypyrrole shells and benzotriazole loading is better in corrosion resistance in the system, and the corrosion resistance of the metal organic framework in the system is improved.
From the specific combination of the test results of example 4 and comparative example 1, the salt resistance of example 4 was > 3280h, the acid resistance was > 2623h, the alkali resistance was > 2788h, the salt resistance of comparative example 1 was > 2875h, the acid resistance was > 2307h, and the alkali resistance was > 2397h, so that it can be seen that the corrosion resistance of example 4 was superior to that of comparative example 1, and the analysis was as follows: example 4 differs from comparative example 1 in that: the metal organic framework is modified by pyrrole monomers and benzotriazole, so that the polypyrrole and the benzotriazole are matched with each other, and the metal organic framework has positive significance on corrosion resistance of the metal organic framework in a system.
From the specific combination of the test results of example 4 and comparative example 2, the salt resistance of example 4 was > 3280h, the acid resistance was > 2623h, the alkali resistance was > 2788h, the salt resistance of comparative example 2 was > 2912h, the acid resistance was > 2243h, and the alkali resistance was > 2342h, so that it can be seen that the corrosion resistance of example 4 was superior to that of comparative example 2, and the analysis was as follows: example 4 differs from comparative example 2 in that: the metal organic framework is modified by the benzotriazole and the pyrrole monomer, so that the fact that the pyrrole monomer and the benzotriazole are matched with each other realizes a better anti-corrosion effect of the coating compared with the fact that the pyrrole monomer and the benzotriazole are independently modified, and the metal organic framework has positive significance on the anti-corrosion effect of the metal organic framework in a system.
From a specific combination of the test results of example 4 and comparative example 3, the adhesion of example 4 was 2-grade, and the adhesion of comparative example 3 was 4-grade, so that it can be seen that the adhesion of example 4 is superior to that of comparative example 3, and analyzed as follows: example 4 differs from comparative example 3 in that: the corrosion-resistant coating also comprises an anionic surfactant, so that the corrosion-resistant coating with the anionic surfactant has better adhesive force.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. A corrosion resistant pressure pipe, characterized by: the corrosion-resistant coating (2) is obtained by coating the inner wall of the pressure pipeline body (1) with a corrosion-resistant coating, and the corrosion-resistant coating comprises the following components in percentage by mass: 42-54% of epoxy resin, 12-18% of metal organic framework, 0.3-1% of auxiliary agent and 100% of toluene.
2. A corrosion resistant pressure pipe as claimed in claim 1, wherein: the metal organic framework is prepared after modification treatment, and the modification treatment method of the metal organic framework comprises the following steps:
and adding the metal organic framework into a mixed solution of absolute ethyl alcohol and deionized water, then adding pyrrole monomers, fully stirring, performing centrifugal separation to obtain a precipitate, and finally sequentially cleaning and drying the precipitate to obtain the primary modified metal organic framework.
3. A corrosion resistant pressure pipe as claimed in claim 2, wherein: in the modification treatment method of the metal-organic framework, the primary modification treatment method further comprises the following steps of:
adding benzotriazole into ethanol solution, then adding the primary modified metal organic framework, fully stirring, performing centrifugal separation to obtain a precipitate, and finally sequentially cleaning and drying the precipitate to obtain the modified metal organic framework.
4. A corrosion resistant pressure pipe according to claim 3, wherein: the mass ratio of the metal organic framework to the pyrrole monomer to the benzotriazole is 0.1 (2.2-2.8) to 3.6-4.2.
5. A corrosion resistant pressure pipe as claimed in claim 1, wherein: the auxiliary agent comprises an anionic surfactant and an additive, wherein the anionic surfactant accounts for 0.1-0.3% of the total amount of the corrosion-resistant coating.
6. A corrosion resistant pressure pipe as claimed in claim 5, wherein: the anionic surfactant is one or more of sodium stearate and calcium lignosulfonate.
7. A corrosion resistant pressure pipe as claimed in claim 5, wherein: the additive consists of butyl acrylate, organic silicon and soap according to the mass ratio of 1:1 (0.7-1.3).
8. A corrosion resistant pressure pipe as claimed in claim 1, wherein: the epoxy resin is one or more of phenolic epoxy resin, alicyclic epoxy resin and aromatic epoxy resin.
9. A corrosion resistant pressure pipe as claimed in claim 1, wherein: the metal organic framework is zeolite-like imidazole ester framework.
10. A corrosion resistant pressure pipe as claimed in claim 1, wherein: the preparation method of the corrosion-resistant coating comprises the following steps:
and mixing the epoxy resin, the metal-organic framework, the auxiliary agent and the toluene, and uniformly stirring to prepare the corrosion-resistant coating.
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| CN112538307A (en) * | 2020-12-08 | 2021-03-23 | 西安建筑科技大学 | Polypyrrole corrosion-resistant anticorrosive paint, preparation method and use method thereof, and composite material |
| CN115651479A (en) * | 2022-10-19 | 2023-01-31 | 武汉材料保护研究所有限公司 | Preparation method of cerium dioxide container doped modified water-based epoxy anticorrosive paint |
| CN115926587A (en) * | 2023-01-17 | 2023-04-07 | 辽宁石油化工大学 | Anti-corrosion wear-resistant coating and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112538307A (en) * | 2020-12-08 | 2021-03-23 | 西安建筑科技大学 | Polypyrrole corrosion-resistant anticorrosive paint, preparation method and use method thereof, and composite material |
| CN115651479A (en) * | 2022-10-19 | 2023-01-31 | 武汉材料保护研究所有限公司 | Preparation method of cerium dioxide container doped modified water-based epoxy anticorrosive paint |
| CN115926587A (en) * | 2023-01-17 | 2023-04-07 | 辽宁石油化工大学 | Anti-corrosion wear-resistant coating and preparation method thereof |
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