CN105419565A - Modified environmentally-friendly heavy duty anticorrosion coating and preparation method thereof - Google Patents
Modified environmentally-friendly heavy duty anticorrosion coating and preparation method thereof Download PDFInfo
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- CN105419565A CN105419565A CN201511003285.5A CN201511003285A CN105419565A CN 105419565 A CN105419565 A CN 105419565A CN 201511003285 A CN201511003285 A CN 201511003285A CN 105419565 A CN105419565 A CN 105419565A
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- 238000000576 coating method Methods 0.000 title claims abstract description 47
- 239000011248 coating agent Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 36
- 239000000843 powder Substances 0.000 claims abstract description 32
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000007613 environmental effect Effects 0.000 claims abstract description 16
- 239000003822 epoxy resin Substances 0.000 claims abstract description 15
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 9
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims abstract description 8
- 229910000165 zinc phosphate Inorganic materials 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000010445 mica Substances 0.000 claims abstract description 7
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 7
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 19
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 18
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000004816 latex Substances 0.000 claims description 14
- 229920000126 latex Polymers 0.000 claims description 14
- 239000002131 composite material Substances 0.000 claims description 11
- 210000003205 muscle Anatomy 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 7
- ZTFZSHLWORMEHO-UHFFFAOYSA-A pentaaluminum;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O ZTFZSHLWORMEHO-UHFFFAOYSA-A 0.000 claims description 7
- 239000006229 carbon black Substances 0.000 claims description 6
- 239000013530 defoamer Substances 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 229960001124 trientine Drugs 0.000 claims description 5
- 239000004160 Ammonium persulphate Substances 0.000 claims description 4
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 23
- 230000007797 corrosion Effects 0.000 abstract description 22
- 229920000767 polyaniline Polymers 0.000 abstract description 5
- 239000002253 acid Substances 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000032683 aging Effects 0.000 abstract description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 2
- QPLNUHHRGZVCLQ-UHFFFAOYSA-K aluminum;[oxido(phosphonooxy)phosphoryl] phosphate Chemical compound [Al+3].OP([O-])(=O)OP([O-])(=O)OP(O)([O-])=O QPLNUHHRGZVCLQ-UHFFFAOYSA-K 0.000 abstract 1
- 239000002518 antifoaming agent Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 239000000839 emulsion Substances 0.000 abstract 1
- 229910021485 fumed silica Inorganic materials 0.000 abstract 1
- 239000003112 inhibitor Substances 0.000 abstract 1
- 231100000956 nontoxicity Toxicity 0.000 abstract 1
- 230000036314 physical performance Effects 0.000 abstract 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 20
- 238000000034 method Methods 0.000 description 11
- 239000011780 sodium chloride Substances 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 238000006253 efflorescence Methods 0.000 description 6
- 239000003973 paint Substances 0.000 description 6
- 239000000049 pigment Substances 0.000 description 6
- 206010037844 rash Diseases 0.000 description 6
- 230000037303 wrinkles Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000002335 preservative effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 238000004500 asepsis Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000001117 sulphuric acid Substances 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000002687 intercalation Effects 0.000 description 2
- 238000009830 intercalation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003260 anti-sepsis Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Polymers O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/02—Polyamines
- C08G73/026—Wholly aromatic polyamines
- C08G73/0266—Polyanilines or derivatives thereof
-
- 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
-
- 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
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to a modified environmentally-friendly heavy duty anticorrosion coating and a preparation method thereof. The coating comprises, by mass, 30-60% of an epoxy resin emulsion, 5-10% of a curing agent, 5-15% of polyaniline modified FeOCl, 5-10% of aluminum triphosphate, 2-5% of zinc phosphate, 2-8% of iron oxide red, 1-5% of titanium dioxide, 1-5% of mica powder, 0.1-2% of fumed silica, 0.1-2% of a silane coupling agent, 0.1-3% of an antifoaming agent, 1-3% of an anti-settling agent and 0.1-5% of a flash rust inhibitor. The invention also provides the preparation method of the anticorrosion coating. The anticorrosion coating has the advantages of easy drying, safety, environmental protection, no harmful substances, strong corrosion resistance, strong acid and alkali resistance, difficult ageing peeling, excellent adhesion, good flexibility, high hardness, no volatile organic micro-molecules, non-toxicity, and realization of excellent corrosion resistance and excellent physical performances of a film formed by using the coating.
Description
Technical field
The present invention relates to a kind of environmental protection heavy-duty coating and preparation method, belong to anticorrosive coating field.
Background technology
Metallic corrosion is a kind of very general phenomenon, and corrosion is seldom because of caused by simple machinery or physical factor, and most damage all has close relationship with its surrounding enviroment.Corrosion of metal is present in the every field of national economy and national defense construction, not only causes great infringement to the facility in national economy and national defense construction, and the accident that stress corrosion in metallic corrosion and corrosion fatigue cause can endanger personnel safety.Metallic corrosion causes a large amount of Energy resources wastes and environmental pollution.
It is the most practical for using coating to carry out protection to metal, economical, effective means.Therefore be the important topic of metal protection and coating industry to the research of protective system always.Traditional anticorrosive metal paint is almost solvent based coating, is attended by a large amount of solvent evaporates in film process.The solvent of volatilization not only works the mischief to the environment of human body and periphery and pollutes, and also result in the waste of resource simultaneously.And the rust-stabilising pigment added in traditional protective system all contains the objectionable impuritiess such as lead, chromium, works the mischief equally to human body and environment.Along with improving constantly environmental requirement, the continuous reinforcement of environmental consciousness and the strict control of laws and regulations environmental pollution, at present in the urgent need to environmentally friendly coating.Therefore day by day obvious to the cry of the protective system of environment-friendly type.
For reducing the pollution to environment, at present water-borne coatings and low solvent based coating are concentrated on to the research of environment-friendly type coating.Epoxypaint is the maximum environment-friendly type coating of current application prospect.Except coating itself, the selection of rust-stabilising pigment and use are also the very important factors determining coating property quality.In order to substitute traditional chrome yellow, the poisonous pigment such as red lead, people have studied as zinc phosphate, aluminium triphosphate, and the rust-stabilising pigment of scale class, as Chinese patent literature CN102382494A (application number: 201110226841.0) disclosed glass flake anticorrosion paint, but to there is cost high for these rust-stabilising pigments, dispersed bad, than the shortcoming such as great.Polyaniline has very excellent performance in protective system, as Chinese patent literature CN102634276A (application number: 201210125211.9) disclosed a kind of polyaniline anti-corrosive paint and preparation method thereof, this protective system employs polyaniline-modified montmorillonite Composite filler, serve good preservative effect, but the preservative effect of polynite itself is not good, and modifying process is loaded down with trivial details.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of environmental protection heavy-duty coating and preparation method.Protective system of the present invention, easily dry, safety and environmental protection, unharmful substance, corrosion resistance is strong, and strong acid-base resistance, not easily aging peeling, have excellent sticking power, and snappiness is good, hardness is high.The preparation method of this protective system is simple, cost is low, can produce at normal temperatures and pressures and apply, and the paint film physicals after solidification and excellent anti-corrosion performance, asepsis environment-protecting, paint stability is high.
Technical scheme of the present invention is as follows:
A kind of modified environment-friendly heavy-duty coating, this protective system comprises the raw material composition of following mass percent:
Epoxy resin latex 30%-60%, solidifying agent 5-10%, polyaniline-modified FeOCl5-15%, aluminium triphosphate 5-10%, zinc phosphate 2-5%, red iron oxide 2-8%, titanium dioxide 1-5%, mica powder 1-5%, Meteorological Act white carbon black 0.1%-2%, silane coupling agent 0.1%-2%, defoamer 0.1%-3%, anti-settling agent 1%-3%, anti-sudden strain of a muscle rust agent 0.1%-5%.
According to the present invention, preferably, described polyaniline-modified FeOCl obtains as follows:
I () will be distributed in aniline after FeOCl oven dry, grinding, ultrasonic disperse 10-30min, stirs 1-7d under lucifuge, nitrogen environment, filters the 60-90 DEG C of oven dry under nitrogen protection of gained solid, grinds to obtain FeOCl-An composite powder;
(ii) be scattered in water by FeOCl-An composite powder, ultrasonic disperse 10-30min, then stirs 1-4h;
(iii) step (ii) resultant bulk system is under agitation slowly dripped the ammonium persulfate solution of (0.1-1) mol/L, the mass ratio then continuing to stir 4-12h, ammonium persulphate: FeOCl-An is 1:(10-20); Filtration obtains solid, dries at 60-90 DEG C, and grinding, obtains polyaniline-modified FeOCl.
According to the present invention, preferably, described epoxy resin latex is MU-601 epoxy resin latex.
According to the present invention, preferably, described silane coupling agent is one or more mixing in KH550, KH560, KH602, KH792.
According to the present invention, preferably, described anti-sudden strain of a muscle rust agent is the agent of CH07A anti-sudden strain of a muscle rust.
According to the present invention, preferably, described anti-settling agent is inorganic gel anti-settling agent.
According to the present invention, preferably, described solidifying agent is water-soluble triethylene tetramine.
According to the present invention, the preparation method of above-mentioned environmental protection heavy-duty coating, comprises step as follows:
(1) by FeOCl powder dispersion in aniline, ultrasonic disperse 10-30min, stirs 1-7d under lucifuge, nitrogen environment, filters gained solid 60-90 DEG C of oven dry under nitrogen protection, grinds to obtain FeOCl-An composite powder;
(2) be scattered in water by FeOCl-An composite powder, ultrasonic disperse 10-30min, then stirs 1-4h;
(3) step (2) resultant bulk system is under agitation slowly dripped the ammonium persulfate solution of (0.1-1) mol/L, then continue to stir 4-12h, filter and obtain solid, dry at 60-90 DEG C, grinding, obtains polyaniline-modified FeOCl powder;
The mass ratio of ammonium persulphate: FeOCl-An is 1:(10-20);
(4) by mass percentage, by anti-settling agent, polyaniline-modified FeOCl powder, aluminium triphosphate, zinc phosphate, red iron oxide, titanium dioxide, mica powder, Meteorological Act white carbon black, silane coupling agent, defoamer, the agent of anti-sudden strain of a muscle rust, join successively in epoxy resin latex under whipped state, then ultrasonic disperse 20-60min, stir fully dispersion in 1-4 hour, obtain component A;
(5) component A is mixed with solidifying agent, solidifying agent: the mass ratio of epoxy resin latex is (0.5-1): 5, obtains modified environment-friendly epoxy heavy-duty anticorrosive coating.
Method produced according to the present invention, preferably, the mass ratio of step (1) FeOCl powder and aniline is 1:(5-20).
Method produced according to the present invention, preferably, in step (3), the rate of addition of ammonium persulfate solution is that 0.2-1 per second drips.
Principle of the present invention:
FeOCl is a kind of compound with laminate structure, has good preservative effect, and FeOCl has obvious structural anisotropy, is easy to make host molecule or group embed its interlayer.The preservative activity of polyaniline and FeOCl has been had concurrently as protection against corrosion filler with polyaniline-modified FeOCl, the microcosmic laminate structure that polyaniline-modified FeOCl has has good barrier effect to corrosive medium, adds the polyaniline intercalated of interlayer and can play excellent antiseptic property.It is simple that polyaniline-modified FeOCl has production technique as heavy antisepsis filler, and consume energy low, material is easy to get, and is applicable to the advantage of scale operation.
FeOCl of the present invention can buy in market, also can prepare by prior art.Can be see: " research about lamellar compound FeOCl (FeOCl) structure and physics-chem characteristic ", Chen Zhen, power technology, the 2nd phase, 17-21 page." intercalation compound FeOCl (HQ)
0.78synthesis and characteries research ", Dai Yaodong etc., Nanjing Aero-Space University's journal, the 2005,37th volume the 5th phase, 643-647.
The present invention compared with prior art, has the following advantages:
1, the present invention adopts the epoxy resin latex of organic solvent-free to be membrane-forming agent, and the polyaniline-modified FeOCl powder new packing adding asepsis environment-protecting has prepared environmental protection heavy-duty coating.Stronger protective coating can be formed at steel surface, effectively prevent organic solvent and the use containing toxicity rust-stabilising pigment.
2, production cost of the present invention is low, and material is easy to get, asepsis environment-protecting.
The preparation technology of 3, environmental protection of the present invention, and epoxy heavy-duty anticorrosive coating is relatively simple, and cost is low, is suitable for large-scale industrial production, and application prospect is good.
4, the corrosion protection coating physicals that obtains of application of paints of the present invention is good, has excellent corrosion resistance nature.
Accompanying drawing explanation
Fig. 1 is the SEM photo of protective system gained cured film after coating processing that the embodiment of the present invention 1 obtains.
Fig. 2 is the dynamic potential polarization curve of protective system after coating processing that the embodiment of the present invention 3 obtains.
Embodiment:
Below in conjunction with specific embodiment, also the present invention will be further described by reference to the accompanying drawings, but be not limited thereto.
Raw materials usedly in embodiment be convenient source, commercial products.
Wherein: epoxy resin latex (MU-601) Shanghai Forlon Chemical Science and Technology Development Co., Ltd. is on sale, solidifying agent water-soluble triethylene tetramine Shanghai Forlon Chemical Science and Technology Development Co., Ltd. is on sale, and anti-sudden strain of a muscle rust agent (CH07A) Foshan mayor sky trade Co., Ltd is on sale.FeOCl reference: " intercalation compound FeOCl (HQ)
0.78synthesis and characteries research ", Dai Yaodong etc., Nanjing Aero-Space University's journal, the 2005,37th volume the 5th phase, 643-647, prepares.
Embodiment 1
A kind of modified environment-friendly heavy-duty coating, this protective system comprises the raw material composition of following mass percent:
Epoxy resin latex MU-601100g, the water-soluble triethylene tetramine 20g of solidifying agent, polyaniline-modified FeOCl15g, aluminium triphosphate 5g, zinc phosphate 2g, red iron oxide 3g, titanium dioxide 1g, mica powder 2g, Meteorological Act white carbon black 0.5g, silane coupling agent KH-5602g, defoamer 1g, inorganic gel anti-settling agent 2g, anti-sudden strain of a muscle rust agent CH07A1g.
Preparation process is as follows:
(1) by 3gFeOCl powder dispersion in 6g aniline, ultrasonic 30min, stirs 3d, suction filtration under lucifuge, nitrogen environment, and gained solid is 90 DEG C of oven dry under nitrogen protection, grind to obtain FeOCl-An composite powder;
(2) be scattered in water by 3gFeOCl-An composite powder, ultrasonic 15min, then stirs 2h;
(3) step (2) resultant bulk system is under agitation slowly dripped the ammonium persulfate solution (0.5 per second) that 13ml concentration is 0.1mol/L, then continue to stir 12h, filter, 90 DEG C of oven dry, grind to obtain polyaniline-modified FeOCl powder.
(4) successively 2g anti-settling agent is added stir 1h in 100g epoxy resin latex after continue to add successively 15g polyaniline-modified FeOCl powder, 5g aluminium triphosphate, 2g zinc phosphate, 3g red iron oxide, 1g titanium dioxide, 2g mica powder, 0.5g Meteorological Act white carbon black, 2g silane coupling agent KH-560,1g defoamer, the agent of 1g anti-sudden strain of a muscle rust again, then ultrasonic disperse 30min, stir 4h fully to disperse, obtain component A;
(5) step (4) gained component A and the water-soluble triethylene tetramine of 20g solidifying agent (B component) short mix is even, obtain modified environment-friendly heavy-duty coating.
Fig. 1 is the SEM photo of the protective film of the present embodiment after coating processing, and as shown in Figure 1, coatingsurface is smooth, and film forming is fine and close.
The corrosion current of protective film in 3.5wt% sodium chloride solution is 1.432e-008A/ (cm)
2.
Protective film salient features is as shown in table 1:
Table 1
| Test event | Detected result |
| Thickness | 180μm |
| Hardness | 4H |
| Sticking power | 2 grades (drawing circle method) |
| Shock resistance | 50cm |
| Water tolerance | 85d, unchanged, non-foaming, do not come off |
| Resistance to neutral salt spray | 1300h, unchanged, wrinkle resistant, without rusty stain |
| The sodium chloride solution of resistance to 3.5wt% | 20d, unchanged, wrinkle resistant, without cracking |
| Acid resistance (5% sulphuric acid soln) | 10d, unchanged, without efflorescence, stripping phenomenon |
| Alkali resistance (5% sodium hydroxide solution) | 13d, unchanged, without efflorescence, stripping phenomenon |
Comparative example 1
As described in Example 1, difference does not add polyaniline-modified FeOCl powder.
The corrosion current of protective film in 3.5wt% sodium chloride solution is 9.075e-006A/ (cm)
2.
Protective film salient features is as shown in table 2:
Table 2
| Test event | Detected result |
| Thickness | 160μm |
| Hardness | 4H |
| Sticking power | 2 grades (drawing circle method) |
| Shock resistance | 50cm |
| Water tolerance | 70d, unchanged, non-foaming, do not come off |
| Resistance to neutral salt spray | 1000h, unchanged, wrinkle resistant, without rusty stain |
| The sodium chloride solution of resistance to 3.5wt% | 16d, unchanged, wrinkle resistant, without cracking |
| Acid resistance (5% sulphuric acid soln) | 9d, unchanged, without efflorescence, stripping phenomenon |
| Alkali resistance (5% sodium hydroxide solution) | 10d, unchanged, without efflorescence, stripping phenomenon |
Embodiment 2
Environmental protection heavy-duty coating as described in Example 1, difference adds the polyaniline-modified FeOCl powder of 5g in preparation process (4).
The corrosion current of protective film in 3.5wt% sodium chloride solution is 8.867e-007A/ (cm)
2.
Protective film salient features is as shown in table 3:
Table 3
| Test event | Detected result |
| Thickness | 160μm |
| Hardness | 4H |
| Sticking power | 2 grades (drawing circle method) |
| Shock resistance | 50cm |
| Water tolerance | 90 days, unchanged, non-foaming, do not come off |
| Resistance to neutral salt spray | 1200h, unchanged, wrinkle resistant, without rusty stain |
| The sodium chloride solution of resistance to 3.5wt% | 21 days, unchanged, wrinkle resistant, without cracking |
| Acid resistance (5% sulphuric acid soln) | 10d, unchanged, without efflorescence, stripping phenomenon |
| Alkali resistance (5% sodium hydroxide solution) | 15d, unchanged, without efflorescence, stripping phenomenon |
Embodiment 3
Environmental protection heavy-duty coating as described in Example 1, difference adds the polyaniline-modified FeOCl powder of 10g in preparation process (4).
The corrosion current of protective film in 3.5wt% sodium chloride solution is 2.002e-008A/ (cm)
2, thickness 170 μm, sticking power (drawing circle method) 2 grades, pencil hardness 4H.
Fig. 2 is the dynamic potential polarization curve of the present embodiment after coating processing, has Fig. 2 known, the corrosion in 3.5wt% sodium chloride solution, and corrosion current is 2.002e-008A/ (cm)
2, corrosion potential-0.0976V.
Embodiment 4
Environmental protection heavy-duty coating as described in Example 1, difference adds 0.1gKH550 in preparation process (4).
The corrosion current of protective film in 3.5wt% sodium chloride solution is 1.432e-008A/ (cm)
2, thickness 180 μm, sticking power (drawing circle method) 2 grades, pencil hardness 4H.
Embodiment 5
Environmental protection heavy-duty coating as described in Example 1, difference adds 10g solidifying agent in preparation process (5).
The corrosion current of protective film in 3.5wt% sodium chloride solution is 8.867e-007A/ (cm)
2, thickness 160 μm, sticking power (drawing circle method) 2 grades, pencil hardness 4H.
Claims (10)
1. a modified environment-friendly heavy-duty coating, is characterized in that, this protective system comprises the raw material composition of following mass percent:
Epoxy resin latex 30%-60%, solidifying agent 5-10%, polyaniline-modified FeOCl5-15%, aluminium triphosphate 5-10%, zinc phosphate 2-5%, red iron oxide 2-8%, titanium dioxide 1-5%, mica powder 1-5%, Meteorological Act white carbon black 0.1%-2%, silane coupling agent 0.1%-2%, defoamer 0.1%-3%, anti-settling agent 1%-3%, anti-sudden strain of a muscle rust agent 0.1%-5%.
2. modified environment-friendly heavy-duty coating according to claim 1, is characterized in that, the polyaniline-modified FeOCl described in this obtains as follows:
I () will be distributed in aniline after FeOCl oven dry, grinding, ultrasonic disperse 10-30min, stirs 1-7d under lucifuge, nitrogen environment, filters the 60-90 DEG C of oven dry under nitrogen protection of gained solid, grinds to obtain FeOCl-An composite powder;
(ii) be scattered in water by FeOCl-An composite powder, ultrasonic disperse 10-30min, then stirs 1-4h;
(iii) step (ii) resultant bulk system is under agitation slowly dripped the ammonium persulfate solution of (0.1-1) mol/L, the mass ratio then continuing to stir 4-12h, ammonium persulphate: FeOCl-An is 1:(10-20); Filtration obtains solid, dries at 60-90 DEG C, and grinding, obtains polyaniline-modified FeOCl.
3. modified environment-friendly heavy-duty coating according to claim 1, is characterized in that, described epoxy resin latex is MU-601 epoxy resin latex.
4. modified environment-friendly heavy-duty coating according to claim 1, is characterized in that, described silane coupling agent is one or more mixing in KH550, KH560, KH602, KH792.
5. modified environment-friendly heavy-duty coating according to claim 1, is characterized in that, described anti-sudden strain of a muscle rust agent is the agent of CH07A anti-sudden strain of a muscle rust.
6. modified environment-friendly heavy-duty coating according to claim 1, is characterized in that, described anti-settling agent is inorganic gel anti-settling agent.
7. modified environment-friendly heavy-duty coating according to claim 1, is characterized in that, described solidifying agent is water-soluble triethylene tetramine.
8. a preparation method for the environmental protection heavy-duty coating described in any one of claim 1-7, comprises step as follows:
(1) by FeOCl powder dispersion in aniline, ultrasonic disperse 10-30min, stirs 1-7d under lucifuge, nitrogen environment, filters gained solid 60-90 DEG C of oven dry under nitrogen protection, grinds to obtain FeOCl-An composite powder;
(2) be scattered in water by FeOCl-An composite powder, ultrasonic disperse 10-30min, then stirs 1-4h;
(3) step (2) resultant bulk system is under agitation slowly dripped the ammonium persulfate solution of (0.1-1) mol/L, then continue to stir 4-12h, filter and obtain solid, dry at 60-90 DEG C, grinding, obtains polyaniline-modified FeOCl powder;
The mass ratio of ammonium persulphate: FeOCl-An is 1:(10-20);
(4) by mass percentage, by anti-settling agent, polyaniline-modified FeOCl powder, aluminium triphosphate, zinc phosphate, red iron oxide, titanium dioxide, mica powder, Meteorological Act white carbon black, silane coupling agent, defoamer, the agent of anti-sudden strain of a muscle rust, join successively in epoxy resin latex under whipped state, then ultrasonic disperse 20-60min, stir fully dispersion in 1-4 hour, obtain component A;
(5) component A is mixed with solidifying agent, solidifying agent: the mass ratio of epoxy resin latex is (0.5-1): 5, obtains modified environment-friendly epoxy heavy-duty anticorrosive coating.
9. the preparation method of environmental protection heavy-duty coating according to claim 8, is characterized in that, the mass ratio of step (1) FeOCl powder and aniline is 1:(5-20).
10. the preparation method of environmental protection heavy-duty coating according to claim 8, is characterized in that, in step (3), the rate of addition of ammonium persulfate solution is that 0.2-1 per second drips.
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| CN115521687A (en) * | 2022-10-27 | 2022-12-27 | 迈实涂料(上海)有限公司 | Ship heavy-duty anticorrosive antirust finish paint and preparation method thereof |
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| CN108017977A (en) * | 2017-12-06 | 2018-05-11 | 北京林业大学 | One kind is used for udometric super-amphiphobic corrosion-resistant finishes and preparation method thereof |
| CN108017977B (en) * | 2017-12-06 | 2020-04-28 | 北京林业大学 | Super-amphiphobic corrosion-resistant coating for rain gauge and preparation method thereof |
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| CN109337518B (en) * | 2018-10-12 | 2020-09-01 | 广东嘉盛环保高新材料股份有限公司 | Water-based epoxy resin coating and preparation method thereof |
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