CN116218323A - Wear-resistant anti-corrosion coating for steel structure and preparation method thereof - Google Patents
Wear-resistant anti-corrosion coating for steel structure and preparation method thereof Download PDFInfo
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- CN116218323A CN116218323A CN202310427247.0A CN202310427247A CN116218323A CN 116218323 A CN116218323 A CN 116218323A CN 202310427247 A CN202310427247 A CN 202310427247A CN 116218323 A CN116218323 A CN 116218323A
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- 238000000576 coating method Methods 0.000 title claims abstract description 95
- 239000011248 coating agent Substances 0.000 title claims abstract description 92
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 50
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- 238000005260 corrosion Methods 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title abstract description 33
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- 239000002562 thickening agent Substances 0.000 claims abstract description 27
- 239000004698 Polyethylene Substances 0.000 claims abstract description 24
- -1 polyethylene Polymers 0.000 claims abstract description 24
- 229920000573 polyethylene Polymers 0.000 claims abstract description 24
- 230000007797 corrosion Effects 0.000 claims abstract description 22
- 239000003607 modifier Substances 0.000 claims abstract description 22
- 239000013556 antirust agent Substances 0.000 claims abstract description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003822 epoxy resin Substances 0.000 claims abstract description 13
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 13
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical compound [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 81
- 238000003756 stirring Methods 0.000 claims description 70
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 238000002156 mixing Methods 0.000 claims description 35
- 238000001914 filtration Methods 0.000 claims description 29
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 27
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- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 claims description 16
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
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- 230000001502 supplementing effect Effects 0.000 claims description 9
- 125000006038 hexenyl group Chemical group 0.000 claims description 8
- 235000012424 soybean oil Nutrition 0.000 claims description 8
- 239000003549 soybean oil Substances 0.000 claims description 8
- 229940037312 stearamide Drugs 0.000 claims description 8
- 229920000058 polyacrylate Polymers 0.000 claims description 7
- 229920000193 polymethacrylate Polymers 0.000 claims description 7
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 6
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims 5
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- 238000005536 corrosion prevention Methods 0.000 abstract description 3
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
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- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical group FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000012760 heat stabilizer Substances 0.000 description 2
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- 230000009545 invasion Effects 0.000 description 2
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- 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
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- 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
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- 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
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/262—Alkali metal carbonates
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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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)
- Application Of Or Painting With Fluid Materials (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of steel corrosion prevention, in particular to a wear-resistant corrosion-resistant coating for a steel structure and a preparation method thereof. The preparation method comprises the following raw materials: the epoxy resin, polyurethane, acrylic polyurethane, thickener, modifier, antirust agent and stabilizer. According to the invention, through precipitation and migration of the polyethylene wax to the surface of the coating and formation of a layer of waxing film on the surface in a microcrystalline form, the wear resistance of the coating is improved, in addition, the lead stearate can help the polyethylene wax to be further uniformly distributed in the coating when the coating is prepared, and the polyethylene wax is conveniently precipitated to the surface of the coating when the coating is coated on the surface of a steel structure for cooling, so that the wear resistance of the coating is enhanced.
Description
Technical Field
The invention relates to the technical field of steel corrosion prevention, in particular to a wear-resistant corrosion-resistant coating for a steel structure and a preparation method thereof.
Background
The steel structure is a structure formed by steel materials, is one of main building structure types, mainly comprises steel beams, steel columns, steel trusses and other components made of steel sections, steel plates and the like, and can be corroded by the action of moisture, oxygen or pollutants under high humidity or high temperature, so that the durability and the service performance of the steel structure are affected.
The CN108816709A relates to a steel structure surface anti-corrosion coating and a preparation method thereof, wherein the surface anti-corrosion coating mainly comprises three parts: the first part is an alcohol-soluble inorganic zinc-rich primer layer, the second part is a polyurethane intermediate paint layer, and the third part is a fluorocarbon finish paint layer; in the preparation process of the anti-corrosion coating, firstly, cleaning and sand blasting rust removal treatment are carried out on the surface of a steel structure, and then primer coating, intermediate paint coating and finish coating are carried out; the alcohol-soluble inorganic zinc-rich primer layer is coated on the surface of the steel structure substrate, the polyurethane intermediate paint is coated on the primer, and the fluorocarbon finish paint is coated on the intermediate paint. The anti-corrosion coating prepared by the invention has excellent corrosion resistance, high temperature resistance, chemical resistance and good decoration, prolongs the service life of a steel structure, and reduces the corrosion prevention maintenance cost in the later period. In the anti-corrosion coating, the alcohol-soluble zinc-rich primer plays a role in isolation and shielding, and metal zinc in the anti-corrosion coating reacts at an anode in the presence of water and oxygen to slow down corrosion rate and play a long-acting electrochemical protection role on a steel structure, however, the anti-corrosion coating is not improved in terms of wear resistance, and the anti-corrosion coating is exposed to outdoor environment for a long time, so that the coating gradually falls off due to wind, blowing and rain, and the anti-corrosion effect of the steel structure is affected.
In order to improve the wear resistance of the anti-corrosion coating and maintain the anti-corrosion effect of the steel structure, the anti-corrosion coating for the steel structure and the preparation method are provided.
Disclosure of Invention
The invention aims to provide a wear-resistant and corrosion-resistant coating for a steel structure and a preparation method thereof, so as to solve the problems in the background technology.
In order to achieve the above object, in one aspect, the present invention provides a wear-resistant and corrosion-resistant coating for a steel structure, which comprises the following raw materials in parts by weight: 44-65 parts by weight of epoxy resin, 15-26 parts by weight of polyurethane, 10-21 parts by weight of acrylic polyurethane, 3-9 parts by weight of thickener, 5-8 parts by weight of modifier, 10-18 parts by weight of antirust agent and 3-7 parts by weight of stabilizer,
the modifier comprises polyethylene wax and hexenyl bis stearamide, and the weight ratio of the polyethylene wax to the hexenyl bis stearamide is 5:1, a step of;
the stabilizer comprises lead stearate and epoxidized soybean oil, and the weight ratio of the lead stearate to the epoxidized soybean oil is 3:1.
as a further improvement of the technical scheme, the rust inhibitor comprises barium sulfate and sodium carbonate, and the weight ratio of the barium sulfate to the sodium carbonate is 1:1.
as a further improvement of the technical scheme, the thickener comprises polycarboxylate and carboxymethyl cellulose, and the weight ratio of the polycarboxylate to the carboxymethyl cellulose is 1:3.
as a further improvement of the technical scheme, the polycarboxylate comprises polyacrylate and polymethacrylate, and the weight ratio of the polyacrylate to the polymethacrylate is 1:1.
on the other hand, the invention also provides a preparation method for preparing the wear-resistant and corrosion-resistant coating for the steel structure, which comprises the following steps of:
s1, putting epoxy resin, polyurethane and acrylic polyurethane into a stirring tank, and adding enough water to mix to generate a stirring material;
s2, taking out the stirring material, putting the stirring material into a reaction kettle, sequentially adding the modifier and the antirust agent, and then heating and stirring to generate a reaction material;
s3, heating the reaction kettle, adding a thickening agent and a stabilizing agent into the reaction kettle for mixing, and then supplementing water into the reaction kettle for constant volume to generate a mixed master batch;
s4, taking out and filtering out precipitate of the mixed master batch, and then dehydrating by heating to generate the coating material.
As a further improvement of the technical scheme, in the step S1, the added water is deionized water.
As a further improvement of the technical scheme, in the step S2, the temperature range is 100-120 ℃ during stirring, and the stirring rotating speed is 25-40rpm/min.
As a further improvement of the technical scheme, in the step S3, the temperature in the reaction kettle is kept at 120-150 ℃, and the mixing mode of the thickener, the stabilizer and the reaction materials is convection mixing.
As a further improvement of the technical scheme, in the step S4, the filtering mode is to filter out the precipitate of the mixed master batch through an industrial filter, and the filtering precision of the industrial filter is in the range of 5-20 mu m.
According to the invention, the modifier is added, the hexenyl bis stearamide can serve as a high-melting-point lubricant to assist the dissolution and uniform distribution of polyethylene wax in the coating material in a high-temperature environment during preparation, when the coating material is coated on the surface of a steel structure and cooled to normal temperature, the polyethylene wax is separated out from the coating material due to the hydrophobicity of the polyethylene wax, migrates to the surface of the coating material and forms a layer of waxing film on the surface in a microcrystalline form, so that the wear resistance of the coating is improved, the stabilizer is added, the lead stearate and the epoxidized soybean oil can inhibit the oxidation reaction of components in the coating material and reduce the surface tension, so that the uniform distribution of all components is ensured, in addition, in the high-temperature environment during preparation, the lead stearate can serve as a heat stabilizer and lubricant of the polyethylene wax, the polyethylene wax can be further uniformly distributed in the coating material during preparation, and the polyethylene wax is conveniently separated out to the surface of the coating when the coating material is coated on the surface of the steel structure and cooled, so that the wear resistance of the coating is enhanced.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the wear-resistant and corrosion-resistant coating for the steel structure and the preparation method, the polyethylene wax is separated out and migrates to the surface of the coating, and a layer of waxing film is formed on the surface in a microcrystalline mode, so that the wear-resistant performance of the coating is improved, in addition, lead stearate can help the polyethylene wax to be further uniformly distributed in the coating when the coating is prepared, and the polyethylene wax is conveniently separated out to the surface of the coating when the coating is coated on the surface of the steel structure for cooling, so that the wear-resistant performance of the coating is enhanced.
2. According to the wear-resistant anti-corrosion coating for the steel structure and the preparation method, a layer of protective film can be formed on the surface of the steel structure through adding the anti-rust agent, so that invasion of moisture, oxygen and other impurities is prevented, corrosion and rust on the surface of the steel structure are avoided, the consistency of the emulsion coating can be increased through adding the thickening agent, the precipitation speed of the coating is slowed down, and the precipitate is loose and easy to stir uniformly, so that coating is labor-saving in construction of the emulsion coating, sagging can be reduced, and the appearance and quality of the coating are guaranteed.
Drawings
Fig. 1 is an overall flow chart of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described 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.
The embodiment of the invention aims at providing a wear-resistant and corrosion-resistant coating for a steel structure, which comprises the following raw materials in parts by weight: 44-65 parts by weight of epoxy resin, 15-26 parts by weight of polyurethane, 10-21 parts by weight of acrylic polyurethane, 3-9 parts by weight of thickener, 5-8 parts by weight of modifier, 10-18 parts by weight of antirust agent and 3-7 parts by weight of stabilizer,
the modifier comprises polyethylene wax and hexenyl bis stearamide, and the weight ratio of the polyethylene wax to the hexenyl bis stearamide is 5:1, a step of;
the stabilizer comprises lead stearate and epoxidized soybean oil, and the weight ratio of the lead stearate to the epoxidized soybean oil is 3:1.
the further rust inhibitor comprises barium sulfate and sodium carbonate, and the weight ratio of the barium sulfate to the sodium carbonate is 1:1, the antirust agent can form a layer of protective film on the surface of the steel structure to prevent invasion of moisture, oxygen and other impurities, thereby avoiding corrosion and rust on the surface of the steel structure.
Still further, the thickener comprises polycarboxylate and carboxymethyl cellulose, and the weight ratio of the polycarboxylate to the carboxymethyl cellulose is 1: and 3, the thickening agent is added to increase the consistency of the emulsion paint, slow down the precipitation speed of the paint, and the precipitate is loose and easy to stir uniformly, so that the painting of the emulsion paint is labor-saving during construction, sagging can be reduced, and the appearance and quality of the coating are ensured.
Further, the polycarboxylate comprises polyacrylate and polymethacrylate, and the weight ratio of the polyacrylate to the polymethacrylate is 1:1, polyacrylate and polymethacrylate have the advantages of good compatibility, and the thickened emulsion is easy to form a film and is not easy to be degraded by microorganisms.
According to the invention, the modifier is added, the hexenyl bis stearamide can serve as a high-melting-point lubricant to assist the dissolution and uniform distribution of polyethylene wax in the coating material in a high-temperature environment during preparation, when the coating material is coated on the surface of a steel structure and cooled to normal temperature, the polyethylene wax is separated out from the coating material due to the hydrophobicity of the polyethylene wax, migrates to the surface of the coating material and forms a layer of waxing film on the surface in a microcrystalline form, so that the wear resistance of the coating is improved, the stabilizer is added, the lead stearate and the epoxidized soybean oil can inhibit the oxidation reaction of components in the coating material and reduce the surface tension, so that the uniform distribution of all components is ensured, in addition, in the high-temperature environment during preparation, the lead stearate can serve as a heat stabilizer and lubricant of the polyethylene wax, the polyethylene wax can be further uniformly distributed in the coating material during preparation, and the polyethylene wax is conveniently separated out to the surface of the coating when the coating material is coated on the surface of the steel structure and cooled, so that the wear resistance of the coating is enhanced.
Referring to fig. 1, the embodiment of the invention also provides a preparation method for preparing the wear-resistant and corrosion-resistant coating for a steel structure, which comprises the following specific steps:
s1, putting 44-65 parts by weight of epoxy resin, 15-26 parts by weight of polyurethane and 10-21 parts by weight of acrylic polyurethane into a stirring tank, adding enough water to mix to generate a stirring material, wherein the added water is deionized water, so that mixing reaction of impurity ions in the water and raw materials can be avoided, and the purity of a generated product can be improved;
s2, taking out the stirring material, putting the stirring material into a reaction kettle, sequentially adding 5-8 parts by weight of modifier and 10-18 parts by weight of antirust agent, heating and stirring to generate the reaction material, wherein the temperature range is 100-120 ℃ during stirring, and the stirring speed is 25-40rpm/min, and stirring at a high temperature so that the put modifier and stabilizer can fully contact with the stirring material to realize uniform distribution of all components in the reaction material;
s3, heating the inside of the reaction kettle to be kept within the range of 120-150 ℃, adding 3-9 parts by weight of thickening agent and 3-7 parts by weight of stabilizing agent into the reaction kettle, mixing, and then supplementing water into the reaction kettle to fix the volume to generate a mixed master batch, wherein the mixing mode of the thickening agent, the stabilizing agent and the reaction materials is convective mixing, namely, under the action of external force, the solid particle group moves greatly, and mixing is realized in the process of circulating flow;
s4, taking out and filtering out the precipitate of the mixed master batch, and then dehydrating by heating to generate a coating material, wherein the filtering mode is that the precipitate of the mixed master batch is filtered out by an industrial filter, the filtering precision range of the industrial filter is 5-20 mu m, and the quality uniformity of the finally generated coating material can be ensured by filtering out the precipitate.
The wear-resistant and corrosion-resistant coating for steel structures, which is prepared by the invention, is further described by the following specific examples according to the differences of raw material consumption and technological parameters in the preparation process.
Example 1
S1, putting 44 parts by weight of epoxy resin, 15 parts by weight of polyurethane and 10 parts by weight of acrylic polyurethane into a stirring tank, adding enough water, mixing to generate a stirring material, wherein the added water is deionized water;
s2, taking out the stirring material, putting the stirring material into a reaction kettle, sequentially adding 5 parts by weight of modifier and 10 parts by weight of antirust agent, and then heating and stirring to generate the reaction material, wherein the stirring temperature is 100 ℃, and the stirring speed is 25rpm/min;
s3, heating the inside of the reaction kettle to be kept at 120 ℃, adding 3 parts by weight of thickener and 3 parts by weight of stabilizer into the reaction kettle, mixing, supplementing water into the reaction kettle, and fixing the volume to generate a mixed master batch, wherein the mixing mode of the thickener, the stabilizer and the reaction material is convection mixing;
s4, taking out and filtering out the precipitate of the mixed master batch, and then dehydrating by heating to generate a coating material, wherein the filtering mode is that the precipitate of the mixed master batch is filtered out by an industrial filter, and the filtering precision of the industrial filter is 5 mu m.
Example 2
S1, adding 50 parts by weight of epoxy resin, 20 parts by weight of polyurethane and 12 parts by weight of acrylic polyurethane into a stirring tank, adding enough water, mixing to generate a stirring material, wherein the added water is deionized water;
s2, taking out the stirring material, putting the stirring material into a reaction kettle, sequentially adding 7 parts by weight of modifier and 12 parts by weight of antirust agent, and then heating and stirring to generate the reaction material, wherein the temperature is 115 ℃ during stirring, and the stirring speed is 30rpm/min;
s3, heating the inside of the reaction kettle to be kept at 140 ℃, adding 4 parts by weight of thickener and 6 parts by weight of stabilizer into the reaction kettle, mixing, supplementing water into the reaction kettle, and fixing the volume to generate a mixed master batch, wherein the mixing mode of the thickener, the stabilizer and the reaction material is convection mixing;
s4, taking out and filtering out the precipitate of the mixed master batch, and then dehydrating by heating to generate a coating material, wherein the filtering mode is that the precipitate of the mixed master batch is filtered out by an industrial filter, and the filtering precision of the industrial filter is 10 mu m.
Example 3
S1, adding 60 parts by weight of epoxy resin, 18 parts by weight of polyurethane and 19 parts by weight of acrylic polyurethane into a stirring tank, adding enough water, mixing to generate a stirring material, wherein the added water is deionized water;
s2, taking out the stirring material, putting the stirring material into a reaction kettle, sequentially adding 6 parts by weight of modifier and 16 parts by weight of antirust agent, and then heating and stirring to generate the reaction material, wherein the temperature is 105 ℃ during stirring, and the stirring speed is 35rpm/min;
s3, heating the inside of the reaction kettle to be kept at 130 ℃, adding 7 parts by weight of thickener and 4 parts by weight of stabilizer into the reaction kettle, mixing, supplementing water into the reaction kettle, and fixing the volume to generate a mixed master batch, wherein the mixing mode of the thickener, the stabilizer and the reaction material is convection mixing;
s4, taking out and filtering out the precipitate of the mixed master batch, and then dehydrating by heating to generate a coating material, wherein the filtering mode is that the precipitate of the mixed master batch is filtered out by an industrial filter, and the filtering precision of the industrial filter is 15 mu m.
Example 4
S1, adding 65 parts by weight of epoxy resin, 26 parts by weight of polyurethane and 21 parts by weight of acrylic polyurethane into a stirring tank, adding enough water, mixing to generate a stirring material, wherein the added water is deionized water;
s2, taking out the stirring material, putting the stirring material into a reaction kettle, sequentially adding 8 parts by weight of modifier and 18 parts by weight of antirust agent, and then heating and stirring to generate the reaction material, wherein the temperature is 120 ℃ during stirring, and the stirring speed is 40rpm/min;
s3, heating the inside of the reaction kettle to be kept at 150 ℃, adding 9 parts by weight of thickener and 7 parts by weight of stabilizer into the reaction kettle, mixing, supplementing water into the reaction kettle, and fixing the volume to generate a mixed master batch, wherein the mixing mode of the thickener, the stabilizer and the reaction material is convection mixing;
s4, taking out and filtering out the precipitate of the mixed master batch, and then dehydrating by heating to generate a coating material, wherein the filtering mode is that the precipitate of the mixed master batch is filtered out by an industrial filter, and the filtering precision of the industrial filter is 20 mu m.
Table 1 comparison of amounts of raw materials used in examples 1 to 4
Table 2 comparative process parameters in examples 1-4
Comparative example 1
The comparative example adopts the preparation method of example 1, only lacks the modifier, and the rest is unchanged, and the specific steps are as follows:
s1, putting 44 parts by weight of epoxy resin, 15 parts by weight of polyurethane and 10 parts by weight of acrylic polyurethane into a stirring tank, adding enough water, mixing to generate a stirring material, wherein the added water is deionized water;
s2, taking out the stirring material, putting the stirring material into a reaction kettle, adding 10 parts by weight of antirust agent, and then heating and stirring to generate a reaction material, wherein the temperature is 100 ℃ during stirring, and the stirring speed is 25rpm/min;
s3, heating the inside of the reaction kettle to be kept at 120 ℃, adding 3 parts by weight of thickener and 3 parts by weight of stabilizer into the reaction kettle, mixing, supplementing water into the reaction kettle, and fixing the volume to generate a mixed master batch, wherein the mixing mode of the thickener, the stabilizer and the reaction material is convection mixing;
s4, taking out and filtering out the precipitate of the mixed master batch, and then dehydrating by heating to generate a coating material, wherein the filtering mode is that the precipitate of the mixed master batch is filtered out by an industrial filter, and the filtering precision of the industrial filter is 5 mu m.
Comparative example 2
The comparative example adopts the preparation method of example 2, only lacks the modifier, and the rest is unchanged, and the specific steps are similar to those of comparative example 1, and the comparative example is not repeated.
Comparative example 3
The comparative example adopts the preparation method of example 3, only lacks the modifier, and the rest is unchanged, and the specific steps are similar to those of comparative example 1, and the comparative example is not repeated.
Comparative example 4
The comparative example adopts the preparation method of example 4, only lacks the modifier, and the rest is unchanged, and the specific steps are similar to those of comparative example 1, and the comparative example is not repeated.
TABLE 3 comparison of raw material amounts in comparative examples 1-4
Comparative example 5
The comparative example uses the preparation method of example 1, only lacks the stabilizer, and the rest is unchanged, and the specific steps are as follows:
s1, putting 44 parts by weight of epoxy resin, 15 parts by weight of polyurethane and 10 parts by weight of acrylic polyurethane into a stirring tank, adding enough water, mixing to generate a stirring material, wherein the added water is deionized water;
s2, taking out the stirring material, putting the stirring material into a reaction kettle, sequentially adding 5 parts by weight of modifier and 10 parts by weight of antirust agent, and then heating and stirring to generate the reaction material, wherein the stirring temperature is 100 ℃, and the stirring speed is 25rpm/min;
s3, heating the inside of the reaction kettle to be kept at 120 ℃, adding 3 parts by weight of thickener into the reaction kettle for mixing, supplementing water into the reaction kettle for constant volume to generate a mixed master batch, and mixing the thickener, the stabilizer and the reaction material in a convection mixing mode;
s4, taking out and filtering out the precipitate of the mixed master batch, and then dehydrating by heating to generate a coating material, wherein the filtering mode is that the precipitate of the mixed master batch is filtered out by an industrial filter, and the filtering precision of the industrial filter is 5 mu m.
Comparative example 6
The comparative example adopts the preparation method of example 2, only lacks the stabilizing agent, and the rest is unchanged, and the specific steps are similar to those of comparative example 5, and the comparative example is not repeated.
Comparative example 7
The comparative example adopts the preparation method of example 3, only lacks the stabilizing agent, and the rest is unchanged, and the specific steps are similar to those of comparative example 5, and the comparative example is not repeated.
Comparative example 8
The comparative example adopts the preparation method of example 4, only lacks the stabilizing agent, and the rest is unchanged, and the specific steps are similar to those of comparative example 5, and the comparative example is not repeated.
Table 4 comparison of amounts of raw materials used in comparative examples 5 to 8
Table 5 comparative process parameters in comparative examples 1-8
Comparative example 9
The preparation method of the comparative example 1 is adopted, the stirring temperature is only set to 80 ℃, the rest is unchanged, the specific steps are similar to those of the example 1, and the comparative example is not repeated.
Comparative example 10
The comparative example is based on comparative example 1, wherein the stirring temperature is only set to 150 ℃, the rest is unchanged, the specific steps are similar to those of comparative example 1, and the comparative example is not repeated.
Comparative example 11
The preparation method of the comparative example 2 is adopted, the stirring rotation speed is only set to be 50rpm/min, the rest is unchanged, the specific steps are similar to those of the example 2, and the comparative example is not repeated.
Comparative example 12
The preparation method of the comparative example 3 is adopted, the temperature is only set to 160 ℃, the rest is unchanged, the specific steps are similar to those of the example 3, and the comparative example is not repeated.
Comparative example 13
The comparative example is based on comparative example 7, the temperature is only set to 100 ℃, the rest is unchanged, the specific steps are similar to comparative example 5, and the comparative example is not repeated.
Comparative example 14
The comparative example adopts the preparation method of example 1, only the filtration precision is set to 25 μm, the rest is unchanged, the specific steps are similar to those of example 1, and the comparative example is not repeated.
Table 6 comparison of amounts of raw materials used in comparative examples 9 to 14
Table 7 comparative process parameters comparative examples 9-14
Test examples
The coating materials were prepared according to the preparation methods of the abrasion-resistant anticorrosive coatings for steel structures provided in examples 1 to 4 and comparative examples 1 to 14, respectively, and the anticorrosive coatings formed from the coating materials were subjected to abrasion resistance test (abrasion resistance is expressed as mass loss of a paint film after a prescribed number of rubbing cycles or as the number of cycles required to abrade the coating layer to the next coating layer or substrate) according to GB/T1768-2006 abrasion resistance determination of color paint and varnish, and the measured data were filled in Table 8.
Table 8 comparison of abrasion resistance of the coating materials prepared in examples and comparative examples
As can be seen from Table 8, the coating materials prepared in examples 1 to 4 were higher in the number of friction cycles than the coating materials prepared in comparative examples, and the coating materials prepared in examples were higher in the number of friction cycles than 360 times, compared with the coating materials prepared in comparative examples 1 to 14, and the coating materials prepared in comparative examples using different amounts of raw materials and process parameters were reduced in the number of friction cycles, so that the coating materials prepared in the present invention were higher in the number of friction cycles, and were superior in wear resistance as anti-corrosion coatings.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The wear-resistant and corrosion-resistant coating for the steel structure is characterized by comprising the following raw materials in parts by weight: 44-65 parts by weight of epoxy resin, 15-26 parts by weight of polyurethane, 10-21 parts by weight of acrylic polyurethane, 3-9 parts by weight of thickener, 5-8 parts by weight of modifier, 10-18 parts by weight of antirust agent and 3-7 parts by weight of stabilizer,
the modifier comprises polyethylene wax and hexenyl bis stearamide, and the weight ratio of the polyethylene wax to the hexenyl bis stearamide is 5:1, a step of;
the stabilizer comprises lead stearate and epoxidized soybean oil, and the weight ratio of the lead stearate to the epoxidized soybean oil is 3:1.
2. the wear resistant corrosion resistant coating for steel structures of claim 1, wherein: the antirust agent comprises barium sulfate and sodium carbonate, and the weight ratio of the barium sulfate to the sodium carbonate is 1:1.
3. the wear resistant corrosion resistant coating for steel structures of claim 1, wherein: the thickener comprises polycarboxylate and carboxymethyl cellulose, wherein the weight ratio of the polycarboxylate to the carboxymethyl cellulose is 1:3.
4. a wear resistant corrosion resistant coating for steel structures as claimed in claim 3, wherein: the polycarboxylate comprises polyacrylate and polymethacrylate, and the weight ratio of the polyacrylate to the polymethacrylate is 1:1.
5. a method for producing a wear-resistant corrosion-resistant coating for steel structures according to any one of claims 1 to 4, characterized by the steps of:
s1, putting epoxy resin, polyurethane and acrylic polyurethane into a stirring tank, and adding enough water to mix to generate a stirring material;
s2, taking out the stirring material, putting the stirring material into a reaction kettle, sequentially adding the modifier and the antirust agent, and then heating and stirring to generate a reaction material;
s3, heating the reaction kettle, adding a thickening agent and a stabilizing agent into the reaction kettle for mixing, and then supplementing water into the reaction kettle for constant volume to generate a mixed master batch;
s4, taking out and filtering out precipitate of the mixed master batch, and then dehydrating by heating to generate the coating material.
6. The method for producing a wear-resistant corrosion-resistant coating for steel structures according to claim 5, characterized in that: in the step S1, the added water is deionized water.
7. The method for producing a wear-resistant corrosion-resistant coating for steel structures according to claim 5, characterized in that: in the step S2, the temperature range is 100-120 ℃ during stirring, and the stirring rotating speed is 25-40rpm/min.
8. The method for producing a wear-resistant corrosion-resistant coating for steel structures according to claim 5, characterized in that: in the step S3, the temperature range in the reaction kettle is 120-150 ℃, and the mixing mode of the thickener, the stabilizer and the reaction material is convection mixing.
9. The method for producing a wear-resistant corrosion-resistant coating for steel structures according to claim 5, characterized in that: in the step S4, the filtering mode is to filter out the precipitate of the mixed master batch through an industrial filter, and the filtering precision range of the industrial filter is 5-20 mu m.
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