CN116254035A - Novel high-salt-fog-resistance water-based epoxy heavy-duty anticorrosive paint - Google Patents
Novel high-salt-fog-resistance water-based epoxy heavy-duty anticorrosive paint Download PDFInfo
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- CN116254035A CN116254035A CN202310225500.4A CN202310225500A CN116254035A CN 116254035 A CN116254035 A CN 116254035A CN 202310225500 A CN202310225500 A CN 202310225500A CN 116254035 A CN116254035 A CN 116254035A
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- salt spray
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- anticorrosive paint
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- 239000004593 Epoxy Substances 0.000 title claims abstract description 49
- 239000003973 paint Substances 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 76
- 150000003839 salts Chemical class 0.000 claims abstract description 51
- 239000007921 spray Substances 0.000 claims abstract description 50
- 238000003756 stirring Methods 0.000 claims abstract description 36
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 239000003822 epoxy resin Substances 0.000 claims abstract description 17
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 44
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 44
- 239000012752 auxiliary agent Substances 0.000 claims description 29
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 22
- 239000003112 inhibitor Substances 0.000 claims description 15
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 15
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 239000002270 dispersing agent Substances 0.000 claims description 13
- 230000002745 absorbent Effects 0.000 claims description 12
- 239000002250 absorbent Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 11
- 229910021485 fumed silica Inorganic materials 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- 239000004848 polyfunctional curative Substances 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 8
- 239000013530 defoamer Substances 0.000 claims description 8
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- -1 calcium ion modified silicon dioxide Chemical class 0.000 claims description 4
- 229910001424 calcium ion Inorganic materials 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 229920002125 Sokalan® Polymers 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 2
- 239000002808 molecular sieve Substances 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 239000004584 polyacrylic acid Substances 0.000 claims description 2
- 229920005646 polycarboxylate Polymers 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical group [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 2
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000005536 corrosion prevention Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000011575 calcium Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 125000004423 acyloxy group Chemical group 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 150000001845 chromium compounds Chemical class 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002894 organic compounds Chemical group 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
-
- 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
-
- 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
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
-
- 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)
- Paints Or Removers (AREA)
Abstract
The invention discloses a novel high salt spray resistant type epoxy heavy-duty anticorrosive paint which is prepared by uniformly stirring a gray slurry containing aqueous epoxy curing agent and zinc powder and a component containing aqueous epoxy resin according to a mass ratio of 2.2:1. The novel high salt spray resistant type epoxy heavy-duty anticorrosive paint provided by the invention can obviously improve the salt spray resistant time of the anticorrosive paint.
Description
Technical Field
The invention relates to the technical field of anti-corrosion coating, in particular to novel high-salt-fog-resistance type epoxy heavy-duty anti-corrosion coating.
Background
The water-based epoxy anticorrosive paint using water as a main diluent and a solvent is researched and developed for nearly 20 years in China, the process technology is mature day by day, and the water-based epoxy anticorrosive paint is adopted in the aspects of chemical industry corrosion prevention, automobile parts, large-scale industrial equipment accessories, containers, ocean corrosion prevention and the like at present because the water-based epoxy anticorrosive paint meets the requirements of environmental protection and energy conservation, becomes an important development direction of modern anticorrosive paint.
The salt spray resistance test of the water-based epoxy anticorrosive paint simulates the marine atmosphere containing a large amount of salt, has strong corrosiveness to metal materials and protective layers thereof, and tests the corrosion resistance of the coating film in a severe environment. The method was started in 1939, and after that, the method was improved to be continuously perfected, and has been widely used as a method for checking corrosion resistance of coating films.
The three elements of salt spray corrosion are water, oxygen and ions. The coating is a high polymer film, and can resist the passing of the three elements to different degrees to play a role in corrosion prevention.
The salt spray resistance of paint films is generally improved, and the following needs to be met:
1. and the quality of the carbon steel passivation film is improved by using an auxiliary agent.
1.1 adding salt spray resistant auxiliary agent to react with iron anode plate to form firm protecting film with iron phosphate as main body, the compact passivating film is insoluble in water, has high hardness and strong adhesive force, and can react with many metal ions to generate chromium compound with good salt spray resistant performance;
1.2 addition of adhesion promoter (silane coupling agent) can improve interfacial adhesion. The silane coupling agent has organophilic and inorganic functional groups in the molecule, has the function of connecting two-phase interfaces of organic and inorganic materials, and has obvious technical effects on modifying polymers and inorganic systems. The structural general formula of the silane coupling agent can be written as RSiX3. Wherein R is a reactive functional group having affinity or reactivity with the resin molecule, such as amino, mercapto, vinyl, epoxy, cyano, methylpropaneacyloxy, etc.; x represents a group capable of hydrolysis such as halogen, alkoxy, acyloxy, etc.; the silane coupling agent has two chemical groups in the molecule, so that the silane coupling agent can react with hydroxyl in inorganic matters and can interact with long molecular chains in organic matters to achieve the coupling effect, and the action mechanism of the silane coupling agent is approximately divided into the following 3 steps:
1) Hydrolyzing the X group into hydroxyl;
2) The hydroxyl groups form hydrogen bonds with the hydroxyl groups existing on the surface of the inorganic substance or are dehydrated into ether bonds
3) The R group is bound to an organic compound.
2. To improve the adhesion of the film in both dry and wet states, it is necessary to select a suitable resin curing system. Systems with too high a hydrophilic content tend to have poor wet bond strength and a high probability of water molecules penetrating into the interface.
2.1 the more hydrophobic the coating film after curing, the more difficult the moisture penetration.
2.2 the better the wet adhesion of the cured film to the substrate, the less likely moisture will penetrate to the interface. On the one hand, the more hydroxyl groups are generated by the system, the better the adhesion to the substrate, such as polyamino curing systems, and on the other hand, the higher the hydrophobicity and the peel strength in the wet state of the system.
2.3 the adhesion of the passivated metal interface is better.
The zinc powder with proper mesh number and proper content is selected, the crosslinking density of the system can be improved, and the zinc powder particles are used for preparing the high-strength zinc powder
The close contact between the sub-elements acts as a sacrificial anode to protect the steel, and the oxide itself acts as a seal to prevent penetration of corrosive media.
The problems of short salt spray resistant time, high epoxy salt spray resistant raw material unit price, high cost of paint formulation and no contribution to practical application exist in the prior art.
Disclosure of Invention
The invention aims to solve the technical problem of short salt spray resistance time of the existing water-based epoxy heavy-duty anticorrosive paint, and provides a novel high salt spray resistance water-based epoxy heavy-duty anticorrosive paint, which can remarkably improve the salt spray resistance time of the anticorrosive paint.
The invention provides a novel high salt spray resistant type epoxy heavy-duty anticorrosive coating, which is prepared by uniformly stirring a gray slurry containing aqueous epoxy curing agent and zinc powder and a component containing aqueous epoxy resin according to a mass ratio of 2-3:1.
The invention relates to a novel high salt spray resistant type epoxy heavy-duty anticorrosive paint, which is characterized in that gray slurry comprises the following components in percentage by mass as a preferable mode: 6.0 to 6.5 percent of propylene glycol methyl ether, 4.0 to 5.0 percent of isopropanol, 5.0 to 6.0 percent of water-based epoxy hardener, 0.5 to 0.6 percent of fumed silica, 1.0 to 1.2 percent of wax powder, 4.0 to 4.8 percent of talcum powder, 1.2 to 1.5 percent of barium sulfate, 1.0 to 2.0 percent of salt spray resistant auxiliary agent, 0.5 to 0.8 percent of water absorbent, 0.5 to 0.8 percent of adhesive auxiliary agent, 0.3 to 0.4 percent of defoamer, 70.0 to 72.0 percent of zinc powder, 1.0 to 1.5 percent of propylene glycol methyl ether and 1.0 to 1.5 percent of isopropanol.
The novel high salt spray resistant type epoxy heavy-duty anticorrosive paint is characterized in that a salt spray resistant auxiliary agent is zinc tripolyphosphate, a water absorbent is a molecular sieve, an adhesive force auxiliary agent is a silane coupling agent, and a defoaming agent is a mixture of foam breaking polymers and hydrophobic particles.
The novel high salt spray resistant water type epoxy heavy-duty anticorrosive paint disclosed by the invention is used as a preferable mode, and comprises the following components in percentage by mass: 21.0 to 22.0 percent of water, 0.5 to 0.8 percent of dispersing agent, 73.0 to 75.0 percent of water-based epoxy resin, 1.5 to 1.8 percent of water-based wax slurry and 1.5 to 1.8 percent of flash rust inhibitor.
The novel high salt spray resistant type epoxy heavy-duty anticorrosive paint is characterized in that a dispersing agent is polyacrylic acid, polycarboxylic acid, polyacrylate or polycarboxylate, a water-based epoxy resin is bisphenol A epoxy resin, water-based wax slurry is polyether polyurethane associated type, and a flash rust inhibitor is organic amine, phosphate or inorganic salt.
The invention relates to a novel high salt spray resistant type epoxy heavy-duty anticorrosive paint, which is characterized in that a flash rust inhibitor is calcium ion modified silicon dioxide as an optimal mode. Corrosion protection principle: h 2 O ionizes to produce H + And OH (OH) - ，H + Displacing Ca + ，SiO 2 SiO formation in alkaline environment 3 2- ，Ca + +SiO 3 2- Producing insoluble calcium silicate, which is insoluble; fe (Fe) 2 + +SiO 3 2- Ferrous silicate (insoluble) is produced. The two insoluble substances are on the metal surface and prevent penetration of corrosive medium.
The invention relates to a novel high salt spray resistant type epoxy heavy-duty anticorrosive paint, which is prepared by adopting the following steps:
s1, adding propylene glycol methyl ether, isopropanol, a water-based epoxy curing agent and fumed silica into a stirring cylinder, and stirring for 5min at a rotating speed of 1500 r;
s2, adding the wax powder, the talcum powder, the barium sulfate, the salt spray resistant auxiliary agent, the water absorbent and the adhesive force auxiliary agent into a stirring cylinder, and stirring for 15-20 min at a rotating speed of 1500 r;
s3, adding the defoaming agent and zinc powder into a stirring cylinder, and stirring for 25min at the temperature of 65 ℃ at the rotating speed of 1500 r;
s4, adding propylene glycol methyl ether and isopropanol into a stirring tank to prepare a component A;
s5, adding distilled water, a dispersing agent, aqueous epoxy resin, aqueous wax slurry and a flash rust inhibitor into a stirring tank, and stirring for 25min at a rotating speed of 1000r to prepare a component B;
s6, preparing the A component and the B component into the anti-corrosion coating according to the mass ratio of 2.2:1.
According to the invention, the calcium ion modified silicon dioxide is used, so that the salt spray corrosion resistance time of the paint can be effectively improved.
The zinc powder is further added into the epoxy curing agent, so that the application period of the paint is prolonged to 12 hours, and the storage period of the paint is prolonged to more than 1 year.
Detailed Description
Example 1
A novel high salt spray resistant water type epoxy heavy-duty anticorrosive paint is prepared by uniformly stirring a component A and a component B in a mass ratio of 2.2:1; wherein:
the component A comprises the following components in percentage by mass: 6.0 to 6.5 percent of propylene glycol methyl ether, 4.0 to 5.0 percent of isopropanol, 5.0 to 6.0 percent of water-based epoxy hardener, 0.5 to 0.6 percent of fumed silica, 1.0 to 1.2 percent of wax powder, 4.0 to 4.8 percent of talcum powder, 1.2 to 1.5 percent of barium sulfate, 1.0 to 2.0 percent of salt spray resistant auxiliary agent, 0.5 to 0.8 percent of water absorbent, 0.5 to 0.8 percent of adhesive auxiliary agent, 0.3 to 0.4 percent of defoamer, 70.0 to 72.0 percent of 500-mesh zinc powder, 1.0 to 1.5 percent of propylene glycol methyl ether and 1.0 to 1.5 percent of isopropanol;
the component B comprises the following components in percentage by mass: 21.0 to 22.0 percent of water, 0.5 to 0.8 percent of dispersing agent, 73.0 to 75.0 percent of water-based epoxy resin, 1.5 to 1.8 percent of water-based wax slurry and 1.5 to 1.8 percent of flash rust inhibitor.
Example 2
A novel high salt spray resistant water type epoxy heavy-duty anticorrosive paint is prepared by uniformly stirring a component A and a component B in a mass ratio of 2.2:1; wherein:
the component A comprises the following components in percentage by mass: 6.0 to 6.5 percent of propylene glycol methyl ether, 4.0 to 5.0 percent of isopropanol, 5.0 to 6.0 percent of water-based epoxy hardener, 0.5 to 0.6 percent of fumed silica, 1.0 to 1.2 percent of wax powder, 4.0 to 4.8 percent of talcum powder, 1.2 to 1.5 percent of barium sulfate, 1.0 to 2.0 percent of salt spray resistant auxiliary agent, 0.5 to 0.8 percent of water absorbent, 0.5 to 0.8 percent of adhesive auxiliary agent, 0.3 to 0.4 percent of defoamer, 70.0 to 72.0 percent of 800-mesh zinc powder, 1.0 to 1.5 percent of propylene glycol methyl ether and 1.0 to 1.5 percent of isopropanol;
the component B comprises the following components in percentage by mass: 21.0 to 22.0 percent of water, 0.5 to 0.8 percent of dispersing agent, 73.0 to 75.0 percent of water-based epoxy resin, 1.5 to 1.8 percent of water-based wax slurry and 1.5 to 1.8 percent of flash rust inhibitor.
Example 3
A novel high salt spray resistant water type epoxy heavy-duty anticorrosive paint is prepared by uniformly stirring a component A and a component B in a mass ratio of 2.2:1; wherein:
the component A comprises the following components in percentage by mass: 6.0 to 6.5 percent of propylene glycol methyl ether, 4.0 to 5.0 percent of isopropanol, 5.0 to 6.0 percent of water-based epoxy hardener, 0.5 to 0.6 percent of fumed silica, 1.0 to 1.2 percent of wax powder, 4.0 to 4.8 percent of talcum powder, 1.2 to 1.5 percent of barium sulfate, 1.0 to 2.0 percent of salt spray resistant auxiliary agent, 0.5 to 0.8 percent of water absorbent, 0.5 to 0.8 percent of adhesive auxiliary agent, 0.3 to 0.4 percent of defoamer, 70.0 to 72.0 percent of 1000-mesh zinc powder, 1.0 to 1.5 percent of propylene glycol methyl ether and 1.0 to 1.5 percent of isopropanol;
the component B comprises the following components in percentage by mass: 21.0 to 22.0 percent of water, 0.5 to 0.8 percent of dispersing agent, 73.0 to 75.0 percent of water-based epoxy resin, 1.5 to 1.8 percent of water-based wax slurry and 1.5 to 1.8 percent of flash rust inhibitor.
Example 4
A novel high salt spray resistant water type epoxy heavy-duty anticorrosive paint is prepared by uniformly stirring a component A and a component B in a mass ratio of 2.2:1; wherein:
the component A comprises the following components in percentage by mass: 6.0 to 6.5 percent of propylene glycol methyl ether, 4.0 to 5.0 percent of isopropanol, 5.0 to 6.0 percent of water-based epoxy hardener, 0.5 to 0.6 percent of fumed silica, 1.0 to 1.2 percent of wax powder, 4.0 to 4.8 percent of talcum powder, 1.2 to 1.5 percent of barium sulfate, 1.0 to 2.0 percent of salt spray resistant auxiliary agent, 0.5 to 0.8 percent of water absorbent, 0.3 to 0.4 percent of defoamer, 70.0 to 72.0 percent of 800-mesh zinc powder, 1.0 to 1.5 percent of propylene glycol methyl ether and 1.0 to 1.5 percent of isopropanol;
the component B comprises the following components in percentage by mass: 21.0 to 22.0 percent of water, 0.5 to 0.8 percent of dispersing agent, 73.0 to 75.0 percent of water-based epoxy resin, 1.5 to 1.8 percent of water-based wax slurry and 1.5 to 1.8 percent of flash rust inhibitor.
Example 5
A novel high salt spray resistant water type epoxy heavy-duty anticorrosive paint is prepared by uniformly stirring a component A and a component B in a mass ratio of 2.2:1; wherein:
the component A comprises the following components in percentage by mass: 6.0 to 6.5 percent of propylene glycol methyl ether, 4.0 to 5.0 percent of isopropanol, 5.0 to 6.0 percent of aqueous epoxy hardener, 0.5 to 0.6 percent of fumed silica, 1.0 to 1.2 percent of wax powder, 4.0 to 4.8 percent of talcum powder, 1.2 to 1.5 percent of barium sulfate, 0.5 to 0.8 percent of water absorbent, 0.5 to 0.8 percent of adhesive force auxiliary agent, 0.3 to 0.4 percent of defoamer, 70.0 to 72.0 percent of 800-mesh zinc powder, 1.0 to 1.5 percent of propylene glycol methyl ether and 1.0 to 1.5 percent of isopropanol;
the component B comprises the following components in percentage by mass: 21.0 to 22.0 percent of water, 0.5 to 0.8 percent of dispersing agent, 73.0 to 75.0 percent of water-based epoxy resin, 1.5 to 1.8 percent of water-based wax slurry and 1.5 to 1.8 percent of flash rust inhibitor.
Example 6
A novel high salt spray resistant water type epoxy heavy-duty anticorrosive paint is prepared by uniformly stirring a component A and a component B in a mass ratio of 2.2:1; wherein:
the component A comprises the following components in percentage by mass: 6.0 to 6.5 percent of propylene glycol methyl ether, 4.0 to 5.0 percent of isopropanol, 5.0 to 6.0 percent of water-based epoxy hardener, 0.5 to 0.6 percent of fumed silica, 1.0 to 1.2 percent of wax powder, 4.0 to 4.8 percent of talcum powder, 1.2 to 1.5 percent of barium sulfate, 0.5 to 0.8 percent of water absorbent, 0.3 to 0.4 percent of defoamer, 70.0 to 72.0 percent of 800-mesh zinc powder, 1.0 to 1.5 percent of propylene glycol methyl ether and 1.0 to 1.5 percent of isopropanol;
the component B comprises the following components in percentage by mass: 21.0 to 22.0 percent of water, 0.5 to 0.8 percent of dispersing agent, 73.0 to 75.0 percent of water-based epoxy resin, 1.5 to 1.8 percent of water-based wax slurry and 1.5 to 1.8 percent of flash rust inhibitor.
The preparation methods of examples 1 to 6 are as follows:
s1, adding propylene glycol methyl ether, isopropanol, a water-based epoxy curing agent and fumed silica into a stirring cylinder, and stirring for 5min at a rotating speed of 1500 r;
s2, adding the wax powder, the talcum powder, the barium sulfate, the salt spray resistant auxiliary agent, the water absorbent and the adhesive force auxiliary agent into a stirring cylinder, and stirring for 15-20 min at a rotating speed of 1500 r;
s3, adding the defoaming agent and zinc powder into a stirring cylinder, and stirring for 25min at the temperature of 65 ℃ at the rotating speed of 1500 r;
s4, adding propylene glycol methyl ether and isopropanol into a stirring tank to prepare a component A;
s5, adding distilled water, a dispersing agent, aqueous epoxy resin, aqueous wax slurry and a flash rust inhibitor into a stirring tank, and stirring for 25min at a rotating speed of 1000r to prepare a component B;
s6, preparing the A component and the B component into the anti-corrosion coating according to the mass ratio of 2.2:1.
The prepared anti-corrosion paint is used for manufacturing a detection sample plate according to the requirements of the standard HG/T4759-2014 of waterborne epoxy anti-corrosion paint, and is subjected to salt spray resistance test after curing for 7 days. The test results are shown in the following table
| Salt spray resistance time/h | Description of the invention | |
| Example 1 | 816 | 500 mesh zinc powder |
| Example 2 | 1032 | 800 mesh zinc powder |
| Example 3 | 912 | 1000 mesh zinc powder |
| Example 4 | 600 | No adhesive force auxiliary agent is added |
| Example 5 | 672 | No salt spray resistant auxiliary agent is added |
| Example 6 | 504 | The two auxiliary agents are not added |
From the test results, the salt spray resistance time is greatly improved after the adhesive force auxiliary agent and the salt spray resistance auxiliary agent are added by selecting 800-mesh zinc powder.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. A novel high salt spray resistant water type epoxy heavy-duty anticorrosive paint is characterized in that: the anticorrosive paint is prepared by uniformly stirring a gray slurry containing an aqueous epoxy curing agent and zinc powder and an aqueous epoxy resin component according to a mass ratio of 2.2:1.
2. The novel high salt spray resistant water type epoxy heavy duty anticorrosive paint according to claim 1, which is characterized in that: the gray slurry comprises the following components in percentage by mass: 6.0 to 6.5 percent of propylene glycol methyl ether, 4.0 to 5.0 percent of isopropanol, 5.0 to 6.0 percent of water-based epoxy hardener, 0.5 to 0.6 percent of fumed silica, 1.0 to 1.2 percent of wax powder, 4.0 to 4.8 percent of talcum powder, 1.2 to 1.5 percent of barium sulfate, 1.0 to 2.0 percent of salt spray resistant auxiliary agent, 0.5 to 0.8 percent of water absorbent, 0.5 to 0.8 percent of adhesive auxiliary agent, 0.3 to 0.4 percent of defoamer, 70.0 to 72.0 percent of zinc powder, 1.0 to 1.5 percent of propylene glycol methyl ether and 1.0 to 1.5 percent of isopropanol.
3. The novel high salt spray resistant water type epoxy heavy duty anticorrosive paint according to claim 2, which is characterized in that: the salt spray resistant auxiliary agent is zinc tripolyphosphate, the water absorbent is a molecular sieve, the adhesive force auxiliary agent is a silane coupling agent, and the defoaming agent is a mixture of a foam breaking polymer and hydrophobic particles.
4. The novel high salt spray resistant water type epoxy heavy duty anticorrosive paint according to claim 1, which is characterized in that: the aqueous epoxy resin comprises the following components in percentage by mass: 21.0 to 22.0 percent of water, 0.5 to 0.8 percent of dispersing agent, 73.0 to 75.0 percent of water-based epoxy resin, 1.5 to 1.8 percent of water-based wax slurry and 1.5 to 1.8 percent of flash rust inhibitor.
5. The novel high salt spray resistant water type epoxy heavy duty anticorrosive paint according to claim 4, which is characterized in that: the dispersing agent is polyacrylic acid, polycarboxylic acid, polyacrylate or polycarboxylate, the aqueous epoxy resin is bisphenol A epoxy resin, the aqueous wax slurry is polyether polyurethane associated type, and the flash rust inhibitor is organic amine, phosphate or inorganic salt.
6. The novel high salt spray resistant water type epoxy heavy duty anticorrosive paint according to claim 5, which is characterized in that: the flash rust inhibitor is calcium ion modified silicon dioxide.
7. The novel high salt spray resistant type epoxy heavy duty anticorrosive paint according to any one of claims 1 to 6, wherein: the preparation of the anticorrosive paint comprises the following steps:
s1, adding propylene glycol methyl ether, isopropanol, the aqueous epoxy hardener and fumed silica into a stirring cylinder, and stirring for 5min at a rotating speed of 1500 r;
s2, adding the wax powder, the talcum powder, the barium sulfate, the salt spray resistant auxiliary agent, the water absorbing agent and the adhesive force auxiliary agent into a stirring cylinder, and stirring for 15-20 min at a rotating speed of 1500 r;
s3, adding the defoaming agent and the zinc powder into a stirring cylinder, and stirring for 25min at the temperature of 65 ℃ at the rotating speed of 1500 r;
s4, adding the propylene glycol methyl ether and the isopropanol into a stirring cylinder to prepare a component A;
s5, adding the distilled water, the dispersing agent, the aqueous epoxy resin, the aqueous wax slurry and the flash rust inhibitor into a stirring tank, and stirring for 25min at a rotating speed of 1000r to prepare a component B;
s6, preparing the A component and the B component into the anticorrosive paint according to the mass ratio of 2.2:1.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109735193A (en) * | 2019-01-02 | 2019-05-10 | 上海利物盛纳米科技有限公司 | Resistance to long-acting heavy-duty aqueous epoxy zinc-enriched paint based on graphene and preparation method thereof |
| CN109762446A (en) * | 2019-01-28 | 2019-05-17 | 宁波中科银亿新材料有限公司 | Water-base epoxy graphene zinc anticorrosive paint, preparation method and application |
| CN115353795A (en) * | 2022-09-05 | 2022-11-18 | 深圳职业技术学院 | High-resistance water-based epoxy zinc-rich primer and preparation method thereof |
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- 2023-03-10 CN CN202310225500.4A patent/CN116254035A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109735193A (en) * | 2019-01-02 | 2019-05-10 | 上海利物盛纳米科技有限公司 | Resistance to long-acting heavy-duty aqueous epoxy zinc-enriched paint based on graphene and preparation method thereof |
| CN109762446A (en) * | 2019-01-28 | 2019-05-17 | 宁波中科银亿新材料有限公司 | Water-base epoxy graphene zinc anticorrosive paint, preparation method and application |
| CN115353795A (en) * | 2022-09-05 | 2022-11-18 | 深圳职业技术学院 | High-resistance water-based epoxy zinc-rich primer and preparation method thereof |
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