CN114426793A - Anticorrosive industrial coating and preparation method thereof - Google Patents
Anticorrosive industrial coating and preparation method thereof Download PDFInfo
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- 239000006115 industrial coating Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000003822 epoxy resin Substances 0.000 claims abstract description 19
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 19
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 19
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 19
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 26
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 14
- 239000003054 catalyst Substances 0.000 claims description 13
- RAABOESOVLLHRU-UHFFFAOYSA-N diazene Chemical compound N=N RAABOESOVLLHRU-UHFFFAOYSA-N 0.000 claims description 13
- 229910000071 diazene Inorganic materials 0.000 claims description 13
- 229910052763 palladium Inorganic materials 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 10
- 239000005977 Ethylene Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 8
- YOCIJWAHRAJQFT-UHFFFAOYSA-N 2-bromo-2-methylpropanoyl bromide Chemical compound CC(C)(Br)C(Br)=O YOCIJWAHRAJQFT-UHFFFAOYSA-N 0.000 claims description 7
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 7
- 229910021589 Copper(I) bromide Inorganic materials 0.000 claims description 7
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 7
- NKNDPYCGAZPOFS-UHFFFAOYSA-M copper(i) bromide Chemical compound Br[Cu] NKNDPYCGAZPOFS-UHFFFAOYSA-M 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- UKODFQOELJFMII-UHFFFAOYSA-N pentamethyldiethylenetriamine Chemical compound CN(C)CCN(C)CCN(C)C UKODFQOELJFMII-UHFFFAOYSA-N 0.000 claims description 7
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 7
- 239000002518 antifoaming agent Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000002390 rotary evaporation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 9
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 36
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 125000003700 epoxy group Chemical group 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000005457 ice water Substances 0.000 description 3
- 238000001953 recrystallisation Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000010025 steaming Methods 0.000 description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229920001187 thermosetting polymer Polymers 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
-
- 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
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- 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 discloses an anticorrosive industrial coating and a preparation method thereof, wherein the anticorrosive industrial coating comprises the following raw materials in parts by weight: 25-40 parts of epoxy resin, 10-20 parts of hyperbranched polyethylene-g-polymethyl methacrylate copolymer, 2.5-4 parts of carbon nitride and 3-5 parts of nano titanium dioxide. The hyperbranched polyethylene-g-polymethyl methacrylate copolymer, the carbon nitride and the nano titanium dioxide are added into the impact high-temperature-resistant extremely cold-resistant industrial coating, so that the corrosion resistance and the adhesive force of the coating are improved, and the influence of the addition of the carbon nitride and the nano titanium dioxide on the warping and the mechanical property of the coating is reduced.
Description
Technical Field
The invention belongs to the field of industrial coatings, and particularly relates to an anticorrosive industrial coating and a preparation method thereof.
Background
The epoxy resin is a generic name of a polymer having two or more epoxy groups in a molecule. Because of the chemical activity of the epoxy group, the epoxy group can be opened by a plurality of compounds containing active hydrogen, and the epoxy group is cured and crosslinked to form a network structure, so that the epoxy group is a thermosetting resin. Epoxy resin has the advantages of good heat resistance, electrical insulation, physical properties, excellent stability, good viscosity, low cost and the like, is one of the most commonly used basic resins in polymer materials, and has been widely applied to various fields.
However, pure epoxy resin has high viscosity and a three-dimensional network structure after curing, so that a plurality of gaps exist, the corrosion resistance and the adhesion of the pure epoxy resin are affected, in the prior art, carbon nitride or nano titanium dioxide is added to improve the corrosion resistance of the epoxy resin, but the addition of the carbon nitride or the nano titanium dioxide often causes the coating to warp, and the mechanical property of the coating is reduced. Therefore, the improvement of the corrosion resistance and the adhesion of the epoxy resin is a problem to be solved urgently.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an anticorrosive industrial coating; the hyperbranched polyethylene-g-polymethyl methacrylate copolymer, the carbon nitride and the nano titanium dioxide are added into the anticorrosive industrial coating, so that the corrosion resistance and the adhesive force of the coating are improved, and the influence of the addition of the carbon nitride and the nano titanium dioxide on the warping and the mechanical property of the coating is reduced.
The invention aims to provide an anticorrosive industrial coating which comprises the following raw materials in parts by weight: 25-40 parts of epoxy resin, 10-20 parts of hyperbranched polyethylene-g-polymethyl methacrylate copolymer, 2.5-4 parts of carbon nitride and 3-5 parts of nano titanium dioxide.
The epoxy resin adopted by the scheme has a large number of polar and active groups in molecules, and has good heat resistance and electrical insulation.
The molecular chain of the hyperbranched polyethylene-g-polymethyl methacrylate copolymer prepared by the scheme contains a large number of long branched chains, and the long branched chains penetrate through gaps of the epoxy resin, so that corrosive media can be effectively prevented from entering the coating; the molecular chain of the hyperbranched polyethylene-g-polymethyl methacrylate copolymer contains a large amount of polar groups, so that the hyperbranched polyethylene-g-polymethyl methacrylate copolymer has good compatibility with epoxy resin; the ester group on the molecular chain of the hyperbranched polyethylene-g-polymethyl methacrylate copolymer has hydrogen bond effect with the hydroxyl on the surface of the nano titanium dioxide, so that the compatibility of the epoxy resin and the nano titanium dioxide is enhanced.
The carbon nitride selected by the scheme is a polymer semiconductor, the specific surface area is large, corrosive media can be effectively prevented from entering the coating, a hydrogen bond is formed between an N element in the carbon nitride molecule and hydroxyl on the surface of the nano titanium dioxide, so that the carbon nitride and the nano titanium dioxide are tightly combined and filled in epoxy resin gaps, the wear resistance, the adhesive force and the corrosion resistance of the coating are improved, the hydrogen bond exists between the N element in the carbon nitride molecule and the hyperbranched polyethylene-g-polymethyl methacrylate copolymer, and the influence of the addition of the carbon nitride on the warping and the mechanical property of the coating is reduced.
The surface of the selected nano titanium dioxide contains a large amount of hydroxyl, hydrogen bond action exists among the hydroxyl on the surface of the nano titanium dioxide, the carbon nitride, the epoxy resin and the hyperbranched polyethylene-g-polymethyl methacrylate copolymer to fill up gaps of the epoxy resin, the corrosion resistance of the resin is improved, and the influence of the addition of the carbon nitride and the nano titanium dioxide on the warping and mechanical properties of the coating is reduced due to the interaction of the hyperbranched polyethylene-g-polymethyl methacrylate copolymer and the nano titanium dioxide.
Further, the preparation method of the hyperbranched polyethylene-g-polymethyl methacrylate copolymer comprises the following steps:
S1.N2under protection, adding a solvent, pyridine and 2-hydroxyethyl acrylate, uniformly stirring, dropwise adding a 2-bromoisobutyryl bromide solution, reacting at room temperature, and performing aftertreatment to obtain an oily product;
s2, introducing ethylene into a reaction bottle, adding a solvent and preparing an oily product in the step S1, stirring at room temperature for reaction, adding a diimine palladium catalyst, and stirring for reaction to obtain a colorless transparent product;
s3, mixing methyl methacrylate, the colorless transparent product prepared in the step S2, pentamethyldiethylenetriamine and a solvent, adding cuprous bromide, stirring for reaction, and performing post-treatment to obtain white solid powder.
Preferably, in step S1, the molar ratio of the 2-bromoisobutyryl bromide to the pyridine to the 2-hydroxyethyl acrylate is 1: 8-10.
Preferably, in step S1, the post-treatment is filtration, rotary evaporation, water washing, anhydrous magnesium sulfate drying, activated carbon decolorization.
Preferably, in step S1, the solvent is selected from one of dichloromethane, toluene and ethyl acetate.
Preferably, in step S2, the pressure of ethylene is maintained at 1 atm.
Preferably, in step S2, the molar ratio of the diimine palladium catalyst to the oily product obtained in step S1 is 1: 10-15.
Preferably, in step S2, the structure of the diimine palladium catalyst is as follows:
the diimine palladium catalyst selected by the scheme is high in catalytic activity and high in thermal stability.
Preferably, in step S2, the solvent is selected from dichloromethane.
Preferably, in step S3, the molar ratio of the colorless transparent product prepared in step S2 to the cuprous bromide to the pentamethyldiethylenetriamine to the methyl methacrylate is 1:1.5:3: 1000.
Preferably, in step S3, the solvent is selected from one of dichloromethane, toluene and tetrahydrofuran.
Preferably, the anticorrosive industrial coating further comprises 0.5-1.5 parts by weight of a dispersant, 0.5-2.0 parts by weight of a defoaming agent, 0.5-2.0 parts by weight of a leveling agent, 10-20 parts by weight of a filler and 10-20 parts by weight of water.
Preferably, the dispersant is selected from BYK-220S.
Preferably, the antifoaming agent is selected from BYK-071.
Preferably, the leveling agent is selected from BYK-345.
Preferably, the filler is selected from talc.
The invention also aims to provide a preparation method of the anticorrosive industrial coating, which is characterized by comprising the following steps:
s1, mixing and stirring epoxy resin, hyperbranched polyethylene-g-polymethyl methacrylate copolymer, carbon nitride and nano titanium dioxide, and heating to 45-60 ℃ to obtain a mixture;
s2, adding a dispersing agent, a defoaming agent, a flatting agent, a filler and water into the mixture, continuously heating, heating to 60-80 ℃, cooling to room temperature after 1-2 hours, and stirring for 30min to obtain the coating.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
Epoxy resins were purchased from Shanghai Merlin Biotechnology, Inc.; the rest raw materials are all purchased from the market.
Example 1: and (3) preparing a hyperbranched polyethylene-g-polymethyl methacrylate copolymer.
S1.N2Under protection, adding 30mL of dichloromethane, pyridine (16mmol) and acrylic acid-2-hydroxyethyl ester (16mmol), stirring uniformly, dropwise adding a 2-bromo isobutyryl bromide (2mmol) solution in an ice-water bath, reacting for 2 hours at room temperature, filtering, rotary steaming, washing with water, drying with anhydrous magnesium sulfate, and decolorizing with activated carbon to obtain an oily product;
s2, introducing ethylene into a reaction bottle, keeping the pressure of the ethylene at 1atm, adding 25mL of dichloromethane, preparing an oily product (10mmol) in the step S1, stirring at room temperature for reaction, adding a diimine palladium catalyst (1mmol), and stirring at room temperature for reaction for 24 hours to obtain a colorless transparent product;
s3, mixing methyl methacrylate (1000mmol), the colorless transparent product (1mmol) prepared in the step S2, pentamethyldiethylenetriamine (3mmol) and 20mL of dichloromethane, adding cuprous bromide (1.5mmol), stirring for reaction for 5 hours, and dropwise adding the product into methanol for recrystallization to obtain white solid powder.
The structure of the diimine palladium catalyst is shown as follows:
example 2: and (3) preparing a hyperbranched polyethylene-g-polymethyl methacrylate copolymer.
S1.N2Under protection, adding 30mL of dichloromethane, pyridine (20mmol) and acrylic acid-2-hydroxyethyl ester (20mmol), stirring uniformly, dropwise adding a 2-bromo isobutyryl bromide (2mmol) solution in an ice-water bath, reacting for 2 hours at room temperature, filtering, rotary steaming, washing with water, drying with anhydrous magnesium sulfate, and decolorizing with activated carbon to obtain an oily product;
s2, introducing ethylene into a reaction bottle, keeping the pressure of the ethylene at 1atm, adding 25mL of dichloromethane, preparing an oily product (15mmol) in the step S1, stirring at room temperature for reaction, adding a diimine palladium catalyst (1mmol), and stirring at room temperature for reaction for 24 hours to obtain a colorless transparent product;
s3, mixing methyl methacrylate (1000mmol), the colorless transparent product (1mmol) prepared in the step S2, pentamethyldiethylenetriamine (3mmol) and 20mL of dichloromethane, adding cuprous bromide (1.5mmol), stirring for reaction for 5 hours, and dropwise adding the product into methanol for recrystallization to obtain white solid powder.
The structure of the diimine palladium catalyst is shown as follows:
example 3: and (3) preparing a hyperbranched polyethylene-g-polymethyl methacrylate copolymer.
S1.N2Under protection, adding 30mL of dichloromethane, pyridine (18mmol) and acrylic acid-2-hydroxyethyl ester (18mmol), stirring uniformly, dropwise adding a 2-bromo isobutyryl bromide (2mmol) solution in an ice-water bath, reacting for 2 hours at room temperature, filtering, rotary steaming, washing with water, drying with anhydrous magnesium sulfate, and decolorizing with activated carbon to obtain an oily product;
s2, introducing ethylene into a reaction bottle, keeping the pressure of the ethylene at 1atm, adding 25mL of dichloromethane, preparing an oily product (12mmol) in the step S1, stirring at room temperature for reaction, adding a diimine palladium catalyst (1mmol), and stirring at room temperature for reaction for 24 hours to obtain a colorless transparent product;
s3, mixing methyl methacrylate (1000mmol), the colorless transparent product (1mmol) prepared in the step S2, pentamethyldiethylenetriamine (3mmol) and 20mL of dichloromethane, adding cuprous bromide (1.5mmol), stirring for reaction for 5 hours, and dropwise adding the product into methanol for recrystallization to obtain white solid powder.
The structure of the diimine palladium catalyst is shown as follows:
examples 4-6 and comparative examples 1-6: provides a preparation method of an anticorrosive industrial coating.
TABLE 1 compositions in parts by weight of anticorrosive industrial coatings of examples 4-6 and comparative examples 1-6.
(2) Examples 4-6 and comparative examples 1-6 preparation of corrosion protective industrial coatings.
S1, mixing and stirring epoxy resin, hyperbranched polyethylene-g-polymethyl methacrylate copolymer, carbon nitride and nano titanium dioxide in parts by weight, and heating to 45-60 ℃ to obtain a mixture;
s2, adding a dispersing agent, a defoaming agent, a flatting agent, a filler and water into the mixture according to the parts by weight, continuously heating, heating to 60-80 ℃, cooling to room temperature after 1-2 hours, and stirring for 30min to obtain the coating.
And (5) testing the performance.
The coatings prepared in examples 4-6 and comparative examples 1-3 were formed into coating films according to the national Standard "GB/T1727 general paint film preparation method" for Performance testing, and the test results are shown in Table 2.
Table 2. results of physical property test of coating film obtained from anticorrosive industrial paint.
As can be seen from Table 2, the anticorrosive industrial coatings prepared in examples 4 to 6 have good corrosion resistance and high adhesion.
Finally, it should be noted that the above-mentioned embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the modifications and equivalents of the specific embodiments of the present invention can be made by those skilled in the art after reading the present specification, but these modifications and variations do not depart from the scope of the claims of the present application.
Claims (10)
1. The anticorrosive industrial coating is characterized by comprising the following raw materials in parts by weight:
2. anticorrosive industrial paint according to claim 1, characterized in that the preparation method of the hyperbranched polyethylene-g-polymethylmethacrylate copolymer comprises the following steps:
S1.N2under the protection, adding a solvent, pyridine and 2-hydroxyethyl acrylate, uniformly stirring, dropwise adding a 2-bromoisobutyryl bromide solution, reacting at room temperature, and performing post-treatment to obtain an oily product;
s2, introducing ethylene into a reaction bottle, adding a solvent and preparing an oily product in the step S1, stirring at room temperature for reaction, adding a diimine palladium catalyst, and stirring for reaction to obtain a colorless transparent product;
s3, mixing methyl methacrylate, the colorless transparent product prepared in the step S2, pentamethyldiethylenetriamine and a solvent, adding cuprous bromide, stirring for reaction, and performing post-treatment to obtain white solid powder.
3. The anticorrosive industrial coating of claim 2, wherein in step S1, the molar ratio of 2-bromoisobutyryl bromide, pyridine and 2-hydroxyethyl acrylate is 1: 8-10.
4. The anticorrosive industrial paint of claim 2, wherein in step S1, the post-treatment is filtration, rotary evaporation, water washing, anhydrous magnesium sulfate drying, and activated carbon decoloring.
5. The anticorrosive industrial paint of claim 2, wherein in step S2, the pressure of ethylene is maintained at 1 atm.
6. The anticorrosive industrial paint of claim 2, wherein in step S2, the molar ratio of the diimine palladium catalyst to the oily product obtained in step S1 is 1: 10-15.
7. The anticorrosive industrial paint of claim 2, wherein in step S2, the structure of the diimine palladium catalyst is as follows:
8. the anticorrosive industrial paint according to claim 2, wherein in step S3, the molar ratio of the colorless transparent product obtained in step S2 to the cuprous bromide, the pentamethyldiethylenetriamine and the methyl methacrylate is 1:1.5:3: 1000.
9. The anticorrosive industrial coating of claim 1, further comprising 0.5 to 1.5 parts by weight of a dispersant, 0.5 to 2.0 parts by weight of an antifoaming agent, 0.5 to 2.0 parts by weight of a leveling agent, 10 to 20 parts by weight of a filler, and 10 to 20 parts by weight of water.
10. A method for preparing an anticorrosive industrial coating according to claim 9, characterized by comprising the steps of:
s1, mixing and stirring epoxy resin, hyperbranched polyethylene-g-polymethyl methacrylate copolymer, carbon nitride and nano titanium dioxide, and heating to 45-60 ℃ to obtain a mixture;
s2, adding a dispersing agent, a defoaming agent, a flatting agent, a filler and water into the mixture, continuously heating, heating to 60-80 ℃, cooling to room temperature after 1-2 hours, and stirring for 30min to obtain the coating.
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| CN106586979A (en) * | 2016-11-01 | 2017-04-26 | 浙江工业大学 | Efficient preparation method of boron nitride nanosheet and organic dispersion liquid thereof |
| CN110157296A (en) * | 2019-05-29 | 2019-08-23 | 太原理工大学 | One type graphite phase carbon nitride/epoxy resin corrosion resistant coating and its preparation method and application |
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