CN116656226A - Double-component solvent-free metal anti-corrosion paint and preparation method thereof - Google Patents
Double-component solvent-free metal anti-corrosion paint and preparation method thereof Download PDFInfo
- Publication number
- CN116656226A CN116656226A CN202310563154.0A CN202310563154A CN116656226A CN 116656226 A CN116656226 A CN 116656226A CN 202310563154 A CN202310563154 A CN 202310563154A CN 116656226 A CN116656226 A CN 116656226A
- Authority
- CN
- China
- Prior art keywords
- agent
- free metal
- metal anticorrosive
- anticorrosive paint
- component solvent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003973 paint Substances 0.000 title claims abstract description 76
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 67
- 239000002184 metal Substances 0.000 title claims abstract description 67
- 238000005260 corrosion Methods 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 91
- 238000002156 mixing Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229920001634 Copolyester Polymers 0.000 claims abstract description 20
- 229920005862 polyol Polymers 0.000 claims abstract description 20
- 150000003077 polyols Chemical class 0.000 claims abstract description 20
- 239000003054 catalyst Substances 0.000 claims abstract description 18
- 230000007062 hydrolysis Effects 0.000 claims abstract description 15
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 15
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 230000007797 corrosion Effects 0.000 claims abstract description 8
- 239000001023 inorganic pigment Substances 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 15
- 230000018044 dehydration Effects 0.000 claims description 13
- 238000006297 dehydration reaction Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- 239000002808 molecular sieve Substances 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 12
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 8
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 7
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 7
- 239000013638 trimer Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 229910000684 Cobalt-chrome Inorganic materials 0.000 claims description 5
- 239000010952 cobalt-chrome Substances 0.000 claims description 5
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910001308 Zinc ferrite Inorganic materials 0.000 claims description 4
- QKYQJGWRJWJDII-UHFFFAOYSA-N benzene-1,2-diol;2h-benzotriazole Chemical compound OC1=CC=CC=C1O.C1=CC=CC2=NNN=C21 QKYQJGWRJWJDII-UHFFFAOYSA-N 0.000 claims description 4
- 150000001718 carbodiimides Chemical class 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 125000002524 organometallic group Chemical group 0.000 claims description 4
- 229920000058 polyacrylate Polymers 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical compound O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 claims description 4
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 239000002671 adjuvant Substances 0.000 claims 1
- 239000011253 protective coating Substances 0.000 claims 1
- 239000002516 radical scavenger Substances 0.000 abstract description 8
- 239000012752 auxiliary agent Substances 0.000 abstract description 7
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000004519 grease Substances 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- 229940124543 ultraviolet light absorber Drugs 0.000 description 7
- YXRKNIZYMIXSAD-UHFFFAOYSA-N 1,6-diisocyanatohexane Chemical group O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O YXRKNIZYMIXSAD-UHFFFAOYSA-N 0.000 description 5
- 239000004721 Polyphenylene oxide Substances 0.000 description 5
- 150000001412 amines Chemical class 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 5
- 239000000049 pigment Substances 0.000 description 5
- 229920000570 polyether Polymers 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 230000035699 permeability Effects 0.000 description 4
- 230000004224 protection Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- 230000006750 UV protection Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920005605 branched copolymer Polymers 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
-
- 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
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a double-component solvent-free metal anticorrosive paint and a preparation method thereof, belonging to the technical field of metal anticorrosive paint. The invention prepares the bi-component solvent-free metal anticorrosive paint main agent with good temperature resistance and hydrolysis resistance by adopting the natural grease modified high-functionality branched copolyester polyol with strong hydrophobicity and simultaneously adding the accelerator, the flatting agent, the water scavenger, the hydrolysis resistance auxiliary agent, the catalyst, the ultraviolet absorber and the inorganic pigment. The prepared bi-component solvent-free metal anticorrosive paint is synthesized by mixing the main agent of the bi-component solvent-free metal anticorrosive paint and the curing agent, can be cured to form a complete network structure, and endows a paint film with excellent wear resistance, impact resistance and corrosion resistance, and is not swelled, dissolved, destroyed and decomposed by corrosive media and is in a stable state for a long time. Meanwhile, the adhesive force to the metal substrate is excellent, and various performance requirements of the solvent-free metal anti-corrosion coating can be completely met.
Description
Technical Field
The invention relates to the technical field of metal anti-corrosion paint, in particular to a double-component solvent-free metal anti-corrosion paint and a preparation method thereof.
Background
Metal corrosion often results in reduced metal performance, shortened life and eventual failure, which is the most costly source of metal material. Among them, the most widely used steel materials suffer from economic losses of up to several billion per year. The application of the anticorrosive paint is the most effective protection method for reducing or delaying corrosion, and is the most widely applied metal anticorrosive technology at present. The anticorrosive paint has the advantages of convenient construction, strong adaptability, no limitation of equipment area, structure and shape, convenient repainting and repairing, lower cost and the like.
Besides the basic physical and mechanical properties of the general paint, the anticorrosive paint also has the following characteristics: (1) The corrosion resistance is high, and the material is not swelled, dissolved, destroyed and decomposed by a corrosive medium and is in a stable state; (2) The weather resistance is high, the outdoor environment temperature change is adapted, and the ultraviolet resistance is better; (3) high durability, long coating life; (4) The coating layer is thicker, and the air permeability and water permeability of the coating are smaller; and (5) better workability and matching performance.
In recent years, china has developed anticorrosive paint rapidly, and a plurality of novel anticorrosive paint with excellent performance, such as high-solid-content paint, long-acting heavy-duty anticorrosive paint, powder paint, water-based paint, fluorine-containing paint and the like, are developed on the basis of the traditional anticorrosive paint. Although the existing anticorrosive paint has numerous varieties and huge yield, the existing anticorrosive paint is basically solvent-type paint, the annual emission of Volatile Organic Compounds (VOC) exceeds 20 ten thousand tons, and the volatile organic compounds are difficult to recycle, so that the environment is seriously polluted, the resources are wasted, and serious potential safety hazards are brought to painting constructors, and even serious personnel and property losses are caused. Therefore, with the increasing severity of environmental protection, countries around the world have begun to stop or limit the use of traditional high solvent content anticorrosive coatings, and have turned to the environmentally friendly direction, so the development, production and use of environmentally friendly anticorrosive coatings have become imperative.
Disclosure of Invention
The invention aims to provide a double-component solvent-free metal anticorrosive paint and a preparation method thereof, which are used for solving the technical problems of the existing solvent-type metal anticorrosive paint that organic matters volatilize and the anticorrosive effect is poor.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a two-component solvent-free metal anticorrosive paint, which comprises the following components in percentage by mass: 60 to 95 percent of main agent and curing agent;
the main agent comprises the following raw materials in parts by weight:
the curing agent comprises one or more of polymeric MDI, modified MDI and hexamethylene diisocyanate trimer.
Further, the branched copolyester polyol comprises one or more of S3301, S3302, S3303, and S3304.
Further, the polyetheramine accelerator comprises SH-8108B polyetheramine; the polyacrylate leveling agent comprises EFKAFL3740; the hydroxyphenol benzotriazole ultraviolet absorber comprises Tinuvin328.
Further, the carbodiimide hydrolysis resistance aid comprises HYMAX220; the micro powder molecular sieve water removing agent comprises a micro powder molecular sieve JLH-03-B; the organometallic catalyst comprises dibutyl tin dilaurate.
Further, the inorganic pigment comprises one or more of zinc ferrite yellow, titanium chrome brown, cobalt chrome blue, rutile type titanium dioxide and cobalt green.
The invention provides a preparation method of a double-component solvent-free metal anticorrosive paint, which comprises the following steps:
1) Mixing and grinding branched copolyester polyol, an accelerator and a leveling agent to obtain a mixture I;
2) Mixing the water removing agent and the rest of the catalyst with the first mixture, and then carrying out vacuum dehydration to obtain a second mixture;
3) Sequentially mixing a water removing agent and a catalyst in a second mixture, and grinding to obtain a main agent;
4) And mixing the main agent and the curing agent according to the mass ratio to obtain the double-component solvent-free metal anticorrosive paint.
Further, the temperature of the vacuum dehydration is 70-80 ℃ and the time is 1-2 h.
Further, the granularity of the main agent is less than or equal to 74 mu m.
The invention has the beneficial effects that:
the copolyester polyol is a low molecular weight, high functionality and branched copolymer resin with terminal hydroxyl groups, can endow the metal anticorrosive paint with high weather resistance and durability, can adapt to the change of outdoor environment temperature and has better ultraviolet resistance, and can provide excellent adhesive force to metal substrates; the introduction of the side chains of the natural grease can endow the paint film with smaller air permeability and water permeability, so that the paint film has good water repellency, better construction performance and matching performance; the series of branched copolyester polyol can form a complete network structure by curing, so that the paint film has excellent wear resistance, impact resistance and corrosion resistance, is not swelled, dissolved, destroyed and decomposed by corrosive media, and is in a stable state for a long time; the copolyester polyol can completely meet the performance requirements of producing solvent-free metal anticorrosive paint due to the unique structure, excellent performance, economical efficiency and safety of the synthesis process and the advantages in the aspect of environmental protection.
The invention adopts high functionality branched copolyester polyol, and simultaneously adds accelerator, flatting agent, water removing agent, hydrolysis resistance auxiliary agent, catalyst, ultraviolet light absorber and inorganic pigment to prepare the bi-component solvent-free metal anticorrosive paint main agent with good temperature resistance and hydrolysis resistance. The prepared bi-component solvent-free metal anticorrosive paint is synthesized by mixing the main agent of the bi-component solvent-free metal anticorrosive paint with curing agent polymeric MDI, modified MDI or hexamethylene diisocyanate trimer and the like, can be cured to form a complete network structure, and endows a paint film with excellent wear resistance, impact resistance and corrosion resistance, is not swelled, dissolved, destroyed and decomposed by corrosive media, and is in a stable state for a long time.
Detailed Description
The invention provides a two-component solvent-free metal anticorrosive paint, which comprises the following components in percentage by mass: 60 to 95 percent of main agent and curing agent;
the main agent comprises the following raw materials in parts by weight:
the main agent comprises the following raw materials in parts by weight:
the curing agent comprises one or more of polymeric MDI, modified MDI and hexamethylene diisocyanate trimer.
In the invention, the mass ratio of the main agent to the curing agent is preferably 100:66 to 92, more preferably 100: 75-88.
In the present invention, the content of the branched copolyester polyol is preferably 75 to 90 parts by mass, more preferably 80 to 85 parts by mass.
In the invention, the content of the polyether amine accelerator is preferably 2-4 parts by mass, preferably 3 parts by mass.
In the present invention, the content of the polyacrylate leveling agent is preferably 0.4 to 0.9 part by mass, more preferably 0.5 to 0.8 part by mass, and still more preferably 0.6 to 0.7 part by mass.
In the present invention, the content of the hydroxyphenol benzotriazole ultraviolet absorbers is preferably 1.0 to 2.5 parts by mass, more preferably 1.5 to 2.0 parts by mass.
In the present invention, the content of the carbodiimide hydrolysis resistance aid is preferably 0.8 to 1.5 parts by mass, more preferably 1.0 to 1.2 parts by mass.
In the present invention, the content of the fine molecular sieve water scavenger is preferably 0.2 to 0.8 part by mass, more preferably 0.4 to 0.6 part by mass.
In the present invention, the content of the organometallic catalyst is preferably 0.08 to 0.2 parts by mass, more preferably 0.1 part by mass.
In the present invention, the content of the inorganic pigment is preferably 10 to 18 parts by mass, more preferably 12 to 15 parts by mass.
In the present invention, the curing agent comprises one or more of polymeric MDI, modified MDI, and hexamethylene diisocyanate trimer, the polymeric MDI is preferably PM-200, and the modified MDI is preferably WANNATE8319.
In the present invention, the branched copolyester polyol comprises one or several of S3301, S3302, S3303 and S3304, preferably S3301 and/or S3302, further preferably S3302.
In the invention, the polyetheramine accelerator is preferably SH-8108B polyetheramine; the polyacrylate leveling agent is preferably EFKAFL3740; the hydroxyphenol benzotriazole ultraviolet absorber is preferably Tinuvin328.
In the invention, the carbodiimide hydrolysis resistance auxiliary agent is preferably HYMAX220; the micro powder molecular sieve water removing agent is preferably a micro powder molecular sieve JLH-03-B; the organometallic catalyst is preferably dibutyl tin dilaurate.
In the invention, the inorganic pigment comprises one or more of zinc ferrite yellow, titanium chrome brown, cobalt chrome blue, rutile type titanium dioxide and cobalt green, and preferably zinc ferrite yellow and rutile type titanium dioxide.
In the invention, the preparation method of the two-component solvent-free metal anticorrosive paint comprises the following steps:
1) Mixing and grinding branched copolyester polyol, an accelerator and a leveling agent to obtain a mixture I;
2) Mixing the water removing agent and the rest of the catalyst with the first mixture, and then carrying out vacuum dehydration to obtain a second mixture;
3) Sequentially mixing a water removing agent and a catalyst in a second mixture, and grinding to obtain a main agent;
4) And mixing the main agent and the curing agent according to the mass ratio to obtain the double-component solvent-free metal anticorrosive paint.
In the invention, the temperature of the vacuum dehydration is 70-80 ℃, preferably 75 ℃; the time is 1 to 2 hours, preferably 1.5 hours.
In the present invention, the particle size of the main agent is not more than 74. Mu.m, preferably 20 to 70. Mu.m, more preferably 30 to 50. Mu.m.
In the present invention, the branched copolyester polyol is produced by zheng state Baishi chemical engineering limited, and specific performance indexes are shown in the following table 1:
TABLE 1 branched copolyester polyol Performance index
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
The main agent of the two-component solvent-free metal anticorrosive paint is as follows:
mixing and stirring 4.5 kg of branched copolyester polyol S330175 kg, 4.5 kg of accelerator (SH-8108B polyether amine) and 0.5 kg of leveling agent (EFKAFL 3740) for 45 minutes for pre-dispersing, grinding, sequentially adding 2 kg of ultraviolet light absorber (Tinuvin 328), 1 kg of hydrolysis resistance auxiliary agent (HYMAX 220), 3 kg of pigment (zinc iron yellow JF-B11902) and 13 kg of rutile titanium dioxide, carrying out vacuum dehydration at 70 ℃ for 2 hours, sequentially adding 1 kg of water scavenger (micro powder molecular sieve JLH-03-B) and 0.05 kg of catalyst (T-12) after dehydration, carrying out grinding again to 70 mu m after 25 minutes, filtering and packaging to obtain the double-component solvent-free metal anti-corrosive paint main agent.
The curing agent component is polymeric MDI (PM-200) and is packaged independently.
The prepared bi-component solvent-free metal anticorrosive paint main agent and curing agent (polymeric MDI: PM 200) are mixed according to the mass ratio of 100:75, mixing to obtain the double-component solvent-free metal anticorrosive paint.
Example 2
The main agent of the two-component solvent-free metal anticorrosive paint is as follows:
mixing and stirring 4 kg of branched copolyester polyol S330276 kg, 4 kg of accelerator (SH-8108B polyether amine) and 0.5 kg of flatting agent (EFKAFL 3740) for 45 minutes, then grinding, sequentially adding 2 kg of ultraviolet light absorber (Tinuvin 328), 1.55 kg of hydrolysis resistance aid (HYMAX 220), 4 kg of pigment (titanium chrome brown JF-B2406) and 11 kg of rutile titanium dioxide, carrying out vacuum dehydration at 75 ℃ for 1 hour, sequentially adding 1 kg of water scavenger (micro powder molecular sieve JLH-03-B) and 0.08 kg of catalyst (T-12) after dehydration, carrying out grinding again to 70 mu m after 28 minutes, filtering and packaging to obtain the bi-component solvent-free metal anti-corrosive paint main agent.
The curing agent component is polymeric MDI (PM-200) and is packaged independently.
The prepared bi-component solvent-free metal anticorrosive paint main agent and curing agent (polymeric MDI: PM 200) are mixed according to the mass ratio of 100:78, mixing to obtain the double-component solvent-free metal anticorrosive paint.
Example 3
The main agent of the two-component solvent-free metal anticorrosive paint is as follows:
mixing and stirring 5 kg of branched copolyester polyol S330380 kg, 5 kg of accelerator (SH-8108B polyether amine) and 0.5 kg of flatting agent (EFKAFL 3740) for 45 minutes, then grinding, sequentially adding 2 kg of ultraviolet light absorber (Tinuvin 328), 1.05 kg of hydrolysis resistance aid (HYMAX 220), 3 kg of pigment (cobalt chrome blue JF-B3601) and 8 kg of rutile titanium dioxide, carrying out vacuum dehydration at 80 ℃ for 1.5 hours, sequentially adding 0.8 kg of water scavenger (micro powder molecular sieve JLH-03-B) and 0.1 kg of catalyst (T-12) after dehydration, carrying out grinding again to the fineness of 70 mu m after 30 minutes, filtering and packaging to obtain the main agent of the double-component solvent-free metal anticorrosive paint.
The curing agent component is modified MDI (WANNATE 8319) and is packaged independently.
The prepared bi-component solvent-free metal anticorrosive paint main agent and a curing agent (modified MDI: WANNATE 8319) are mixed according to the mass ratio of 100:92, and mixing to obtain the double-component solvent-free metal anticorrosive paint.
Example 4
The main agent of the two-component solvent-free metal anticorrosive paint is as follows:
mixing and stirring 330476 kg of branched copolyester polyol S, 4.5 kg of accelerator (SH-8108B polyether amine) and 0.5 kg of leveling agent (EFKAFL 3740) for 45 minutes for pre-dispersing, grinding, sequentially adding 2 kg of ultraviolet light absorber (Tinuvin 328), 1.05 kg of hydrolysis resistance auxiliary agent (HYMAX 220), 3 kg of pigment (cobalt green JF-B5010) and 12 kg of rutile titanium dioxide, carrying out vacuum dehydration at 78 ℃ for 2 hours after dispersing, sequentially adding 0.8 kg of water scavenger (micro powder molecular sieve JLH-03-B) and 0.15 kg of catalyst (T-12) after dehydrating, carrying out grinding again to the fineness of 70 mu m after dispersing for 20 minutes, filtering and packaging to obtain the double-component solvent-free metal anti-corrosive paint main agent.
The curing agent component is HDI trimer (HT-100) which is independently packaged.
The prepared bi-component solvent-free metal anticorrosive paint main agent and curing agent (HDI trimer: HT-100) are mixed according to the mass ratio of 100:85, and obtaining the double-component solvent-free metal anticorrosive paint.
Comparative example 1
The main agent of the two-component solvent-free metal anticorrosive paint is as follows:
the preparation method comprises the steps of mixing and stirring 322085 kg of branched copolyester polyol L and 0.5 kg of flatting agent (EFKAFL 3740) for 45 minutes, then grinding, sequentially adding 2 kg of ultraviolet light absorber (Tinuvin 328), 1.05 kg of hydrolysis resistance auxiliary agent (HYMAX 220) and 3 kg of pigment (cobalt chrome blue JF-B3601), 8 kg of rutile titanium dioxide, dispersing, vacuum dehydrating at 80 ℃ for 1 hour, sequentially adding 1 kg of water scavenger (micro powder molecular sieve JLH-03-B) and 0.08 kg of catalyst (T-12) after dehydrating, grinding again to 70 mu m after dispersing for 20 minutes, filtering and packaging to obtain the main agent of the double-component solvent-free metal anti-corrosive paint.
The curing agent component is polymeric MDI (PM-200) and is packaged independently.
The prepared bi-component solvent-free metal anticorrosive paint main agent and curing agent (polymeric MDI: PM-200) are mixed according to the mass ratio of 100:75, mixing to obtain the double-component solvent-free metal anticorrosive paint.
The above synthetic two-component solvent-free metal anticorrosive paint main agent was mixed with polymeric MDI (PM 200), modified MDI or hexamethylene diisocyanate trimer (HT-100) to prepare a two-component solvent-free metal anticorrosive paint, and the overall properties of the prepared carbon steel surface coating were evaluated, and the results are shown in table 2 below:
table 2 comprehensive evaluation of properties of two-component solventless metallic anticorrosive coatings
As can be seen from the above examples, the present invention provides a two-component solvent-free metal anticorrosive paint and a preparation method thereof. In summary, in the embodiment of the invention, the high-functionality branched copolyester polyol is modified by adopting the natural grease with strong hydrophobicity, and simultaneously, the accelerator, the flatting agent, the water scavenger, the hydrolysis resistance auxiliary agent, the catalyst, the ultraviolet light absorber and the inorganic pigment are added to prepare the bi-component solvent-free metal anticorrosive paint main agent with good temperature resistance and hydrolysis resistance. The prepared bi-component solvent-free metal anticorrosive paint is synthesized by mixing the main agent of the bi-component solvent-free metal anticorrosive paint with curing agent polymeric MDI, modified MDI or hexamethylene diisocyanate trimer and the like, can be cured to form a complete network structure, and endows a paint film with excellent wear resistance, impact resistance and corrosion resistance, is not swelled, dissolved, destroyed and decomposed by corrosive media, and is in a stable state for a long time. Meanwhile, the adhesive force to the metal substrate is excellent, and various performance requirements of the solvent-free metal anti-corrosion coating can be completely met. Because the prepared bi-component solvent-free metal anticorrosive paint has low viscosity as a main agent, the weight of the main agent is relatively close to that of a curing agent, the bi-component solvent-free metal anticorrosive paint is very suitable for spraying construction by adopting bi-component spraying equipment, the working efficiency is improved, and the economical efficiency, the safety and the advantages in the aspect of environmental protection of the synthesis process are improved, so that the bi-component solvent-free metal anticorrosive paint has wide application prospect.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A two-component solvent-free metal anticorrosive paint is characterized by comprising the following components in percentage by mass: 60 to 95 percent of main agent and curing agent;
the main agent comprises the following raw materials in parts by weight:
the curing agent comprises one or more of polymeric MDI, modified MDI and hexamethylene diisocyanate trimer.
2. The two-part solventless metal anticorrosive coating of claim 1 wherein the branched copolyester polyol comprises one or more of S3301, S3302, S3303 and S3304.
3. The two-component solventless metallic corrosion protective coating of claim 2, wherein the polyetheramine promoter comprises SH-8108B polyetheramine; the polyacrylate leveling agent comprises EFKA FL3740; the hydroxyphenol benzotriazole ultraviolet absorber comprises Tinuvin328.
4. A two-component solventless metal anticorrosive coating according to any one of claims 1-3 wherein the carbodiimide hydrolysis resistant adjuvant comprises HYMAX220; the micro powder molecular sieve water removing agent comprises a micro powder molecular sieve JLH-03-B; the organometallic catalyst comprises dibutyl tin dilaurate.
5. The two-component solventless metal anticorrosive coating of claim 4 wherein the inorganic pigment comprises one or more of zinc ferrite yellow, titanium chrome brown, cobalt chrome blue, rutile titanium dioxide and cobalt green.
6. The method for preparing the two-component solvent-free metal anticorrosive paint as claimed in any one of claims 1 to 5, which is characterized by comprising the following steps:
1) Mixing and grinding branched copolyester polyol, an accelerator and a leveling agent to obtain a mixture I;
2) Mixing the water removing agent and the rest of the catalyst with the first mixture, and then carrying out vacuum dehydration to obtain a second mixture;
3) Sequentially mixing a water removing agent and a catalyst in a second mixture, and grinding to obtain a main agent;
4) And mixing the main agent and the curing agent according to the mass ratio to obtain the double-component solvent-free metal anticorrosive paint.
7. The method for preparing a two-component solvent-free metal anticorrosive paint according to claim 6, wherein the temperature of the vacuum dehydration is 70-80 ℃ and the time is 1-2 h.
8. The method for preparing a two-component solventless metal anticorrosive coating according to claim 6 or 7, wherein the particle size of the main agent is less than or equal to 74 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310563154.0A CN116656226A (en) | 2023-05-17 | 2023-05-17 | Double-component solvent-free metal anti-corrosion paint and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310563154.0A CN116656226A (en) | 2023-05-17 | 2023-05-17 | Double-component solvent-free metal anti-corrosion paint and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116656226A true CN116656226A (en) | 2023-08-29 |
Family
ID=87714555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310563154.0A Pending CN116656226A (en) | 2023-05-17 | 2023-05-17 | Double-component solvent-free metal anti-corrosion paint and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116656226A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116970333A (en) * | 2023-09-22 | 2023-10-31 | 河南纾宸环保科技有限公司 | Two-component solvent-free polyurethane manual painting coating composition, coating and preparation method thereof |
-
2023
- 2023-05-17 CN CN202310563154.0A patent/CN116656226A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116970333A (en) * | 2023-09-22 | 2023-10-31 | 河南纾宸环保科技有限公司 | Two-component solvent-free polyurethane manual painting coating composition, coating and preparation method thereof |
| CN116970333B (en) * | 2023-09-22 | 2024-05-28 | 河南纾宸环保科技有限公司 | Two-component solvent-free polyurethane manual painting coating composition, coating and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110564274B (en) | Wear-resistant polyurea coating and preparation method and application thereof | |
| CN110028885B (en) | Solvent-free high-toughness heavy-duty anticorrosive paint and preparation method thereof | |
| CN116656226A (en) | Double-component solvent-free metal anti-corrosion paint and preparation method thereof | |
| CN102108245A (en) | Waterborne polyester modified epoxy polyurethane anticorrosive paint and preparation method thereof | |
| CN111978815A (en) | Water-based epoxy asphalt coating and preparation method thereof | |
| CN101575477A (en) | High-solid terrace coating, preparation method and application thereof | |
| CN109735217B (en) | Water-based graphene electromagnetic shielding coating and preparation method thereof | |
| CN101864166A (en) | Method for preparing organic-silane-modified acrylic polyurethane ultraviolet curing prepolymer | |
| CN112226101B (en) | Preparation method of tannin grafted glass flakes and application of tannin grafted glass flakes in high-solid anticorrosive paint | |
| CN102977760A (en) | Thick film type polyurethane finish paint | |
| CN112048231B (en) | Weather-resistant wear-resistant antifouling paint and preparation method thereof | |
| CN112175502B (en) | Chromium-free high-solid-content polyurethane modified epoxy primer | |
| CN112608436A (en) | Polyurethane modified graphene microchip and preparation method thereof | |
| CN110922855A (en) | Water-based high-temperature-resistant long-acting anticorrosive paint and preparation method thereof | |
| CN112011248A (en) | Drag-reduction environment-friendly coating for inner wall of long-distance pipeline and preparation method thereof | |
| CN111471395A (en) | Organic silicon solvent-free anticorrosive paint | |
| CN111925696A (en) | Long-acting heavy-duty anticorrosive coating | |
| CN111592816A (en) | Reinforced concrete surface high-ductility anticorrosive paint and preparation method thereof | |
| CN114921161B (en) | Strippable anticorrosive paint for high-strength bolt friction surface | |
| CN112409927B (en) | Single-component water-based asphalt paint for damping spring and preparation method thereof | |
| CN114854304A (en) | Super-hydrophobic coating with environmental protection and antifouling performance | |
| CN109294423B (en) | Water-based nano polyaniline-polyurethane conductive anticorrosive paint and preparation method thereof | |
| CN111471388A (en) | Polyurethane aluminum-rich anticorrosive paint and preparation method thereof | |
| CN111961381A (en) | anti-H2Long-acting paint film of S gas erosion | |
| CN112538313B (en) | Long-acting anticorrosion graphene modified solvent-free epoxy coating and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |