CN115491098A - Water-based flaky magnet powder heavy-duty anticorrosive primer and preparation method thereof - Google Patents
Water-based flaky magnet powder heavy-duty anticorrosive primer and preparation method thereof Download PDFInfo
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- CN115491098A CN115491098A CN202110681841.3A CN202110681841A CN115491098A CN 115491098 A CN115491098 A CN 115491098A CN 202110681841 A CN202110681841 A CN 202110681841A CN 115491098 A CN115491098 A CN 115491098A
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- 239000000843 powder Substances 0.000 title claims abstract description 86
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 29
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 28
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- 238000003756 stirring Methods 0.000 claims abstract description 23
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002904 solvent Substances 0.000 claims abstract description 18
- 239000004593 Epoxy Substances 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 239000003822 epoxy resin Substances 0.000 claims abstract description 15
- 239000000049 pigment Substances 0.000 claims abstract description 15
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 13
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 13
- 239000002270 dispersing agent Substances 0.000 claims abstract description 13
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000003973 paint Substances 0.000 claims description 17
- 238000001914 filtration Methods 0.000 claims description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 3
- 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 3
- 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 description 3
- 229910000165 zinc phosphate Inorganic materials 0.000 claims description 3
- CUVLMZNMSPJDON-UHFFFAOYSA-N 1-(1-butoxypropan-2-yloxy)propan-2-ol Chemical compound CCCCOCC(C)OCC(C)O CUVLMZNMSPJDON-UHFFFAOYSA-N 0.000 claims description 2
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 2
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 claims description 2
- DJCYDDALXPHSHR-UHFFFAOYSA-N 2-(2-propoxyethoxy)ethanol Chemical compound CCCOCCOCCO DJCYDDALXPHSHR-UHFFFAOYSA-N 0.000 claims description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 claims description 2
- 239000002612 dispersion medium Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002105 nanoparticle Substances 0.000 claims description 2
- 239000013530 defoamer Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 23
- 238000000576 coating method Methods 0.000 description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 19
- 238000005260 corrosion Methods 0.000 description 11
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 11
- 239000010410 layer Substances 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 9
- 150000003839 salts Chemical class 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000006056 electrooxidation reaction Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229940056319 ferrosoferric oxide Drugs 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910052596 spinel Inorganic materials 0.000 description 2
- 239000011029 spinel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 2
- 229940007718 zinc hydroxide Drugs 0.000 description 2
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 229910002553 FeIII Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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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
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
A water-based flaky magnet powder heavy-duty anticorrosion primer comprises a component A and a component B, wherein the mass ratio of the component A to the component B is (4-8): 1. wherein the component A comprises the following raw materials in parts by weight: 10-30 parts of high-purity zinc powder, 40-60 parts of flaky ferric oxide powder, 0-20 parts of antirust pigment, 40-50 parts of waterborne epoxy resin, 0-60 parts of water, ammonia water, 0-5 parts of alcohol ether solvent, 0.5-5 parts of anti-settling agent, 0.1-2 parts of dispersing agent and 2-2.5 parts of defoaming agent; the component B is as follows: a hydrophilic epoxy curing agent. The preparation method comprises the following steps: preparation of component A: mixing and stirring the aqueous epoxy resin and ammonia water uniformly, adjusting the pH value, adding water, alcohol ether solvent, antirust pigment, dispersant, defoamer and anti-settling agent, stirring and dispersing uniformly at normal temperature, and then adding flaky ferric oxide powder and high-purity zinc powder; mixing the component A and the component B in proportion.
Description
Technical Field
The invention relates to the field of heavy-duty anticorrosive paint, and relates to a water-based flaky magnet powder heavy-duty anticorrosive primer and a preparation method thereof.
Background
According to the invention, the flaky ferroferric oxide powder is added into the water-based anticorrosive paint system, so that the performance index of the traditional solvent type epoxy zinc-rich primer can be achieved under the condition of low zinc powder content, the advantages of energy conservation, environmental protection and high comprehensive cost performance are achieved, the bottleneck that the performance of the traditional product in China cannot meet the application requirement in the heavy-duty anticorrosive field is broken through, and the application value and the social and economic values are very high.
The ferroferric oxide contains Fe and O, and an X-ray diffraction experiment shows that the ferroferric oxide has a trans-spinel structure, and ferrate ions FeO never exist in crystals 2 2 . Iron has two valencies in ferroferric oxide and has a trans-spinel structure, namely [ FeIII ]]t[FeⅢFeⅡ]oO 4 Oxygen is cubic closest packed. In addition, ferrosoferric oxide is also a conductor, because in magnetite, because Fe and Fe are basically randomly arranged in octahedral positions, electrons can be rapidly transferred between two oxidation states of iron, and therefore the ferrosoferric oxide solid has excellent conductivity.
The flaky ferric oxide powder has a flaky structure, hydrophobicity and conductivity, and the lamellar structures are stacked layer by layer in the coating to form a compact physical isolation layer; hydrophobicity prevents water molecules from contacting the metal substrate through the coating; the conductivity of the coating can quickly transfer the electrons lost by iron in the anode reaction to the surface of the coating, thereby preventing Fe & lt 3+ & gt from precipitating and slowing down electrochemical corrosion.
Disclosure of Invention
The invention provides a water-based sheet magnet powder heavy-duty anti-corrosion primer and a preparation method thereof, and provides the water-based sheet magnet powder heavy-duty anti-corrosion primer and the preparation method thereof.
In order to solve the technical problems, the following technical scheme is adopted:
the water-based flaky magnet powder heavy-duty anticorrosive primer comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10-30 parts of high-purity zinc powder, 40-60 parts of flaky ferric oxide powder, 0-20 parts of antirust pigment, 40-50 parts of waterborne epoxy resin, 0-60 parts of water, ammonia water, 0-5 parts of alcohol ether solvent, 0.5-5 parts of anti-settling agent, 0.1-2 parts of dispersing agent and 2-2.5 parts of defoaming agent; the component B is as follows: a hydrophilic epoxy curing agent.
The mass ratio of the component A to the component B is (4-8): 1.
the invention provides a preparation method of a water-based flaky magnet powder heavy-duty anticorrosive primer, which comprises the following steps:
(1) Preparation of component A: mixing and stirring the water-based epoxy resin and ammonia water uniformly, adjusting the pH value to be between 8 and 9, adding water and an alcohol ether solvent, stirring for 10 to 20min at normal temperature, sequentially adding an anti-rust pigment, a dispersing agent, a defoaming agent and an anti-settling agent, stirring and dispersing uniformly at normal temperature, adding 40 to 60 parts of flaky ferric oxide powder and 10 to 30 parts of high-purity zinc powder, filtering after dispersing uniformly, and sealing to obtain the zinc oxide nano-particles;
(2) The component A and the component B are mixed and dispersed evenly according to the proportion at normal temperature to obtain the water-based sheet magnet powder heavy-duty anticorrosion primer.
The high-purity zinc powder in the step (1) is 300-500 meshes; the flaky ferric oxide powder is 800-1000 meshes;
the antirust pigment in the step (1) is mica iron oxide, aluminum tripolyphosphate, zinc phosphate or ferrophosphorus powder;
the epoxy equivalent of the aqueous epoxy resin in the step (1) is 200-500;
the alcohol ether solvent in the step (1) is propylene glycol methyl ether, dipropylene glycol butyl ether, ethylene glycol butyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, diethylene glycol propyl ether, diethylene glycol butyl ether or a mixture thereof;
the stirring and dispersing rotating speed of the step (1) is 900-1100r/min, and the dispersing interval time is 10-20 minutes;
the filtering screen in the step (1) is 100-200 meshes;
the component B hydrophilic epoxy curing agent is modified amine which takes water or hydrophilic solvent as a dispersion medium.
Has the advantages that: the water-based flake magnet powder heavy-duty anticorrosion primer disclosed by the invention has the advantages that zinc powder is used as a sacrificial anode, corrosion products such as zinc oxide and zinc hydroxide can be formed in a coating, a shielding film can be formed by the corrosion products, the coating is mainly shielded, and a cathode is further protected. Furthermore, a lamellar net-shaped conductive structure can be formed in the coating through uniformly dispersed flaky ferric oxide powder, the lamellar structures are overlapped in the coating layer by layer to form a compact physical isolation layer, and meanwhile, the conductive performance rapidly transfers electrons lost by iron in the anode reaction to the surface of the coating, so that Fe & lt 3+ & gt precipitation is prevented, the electrochemical corrosion is slowed down, the zinc powder can be more effectively utilized, and the cathode protection effect of the zinc powder is improved; the hydrophobicity of the coating can prevent water molecules from contacting a metal matrix through the coating, so that the protection of the coating on a base material is enhanced, the shielding performance of a paint film is improved, and the using amount of zinc powder is greatly reduced.
Drawings
FIG. 1 is SEM picture of sheet ferroferric oxide
FIG. 2 is a graph showing the effect of applying the heavy-duty primer for sheet magnet powder of the present invention on cold plate
FIG. 3 is a diagram showing the effect of applying water-based zinc-rich heavy-duty anticorrosive coating on cold plates
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The following describes the water-based flake magnet powder heavy-duty anticorrosion primer and the preparation method thereof according to the embodiment of the invention.
The water-based flaky magnet powder heavy-duty anticorrosive primer consists of a component A and a component B, wherein the weight ratio of the component A to the component B is (4-8): 1, and the water-based flaky magnet powder heavy-duty anticorrosive primer has corrosion resistance through the synergistic effect of the component A and the component B, and simultaneously has high bonding strength with a substrate, so that the coating can be effectively prevented from falling off.
Specifically, by weight, 10-30 parts of high-purity zinc powder, 40-60 parts of flaky ferric oxide powder, 0-20 parts of antirust pigment, 40-50 parts of water-based epoxy resin, 0-60 parts of water, ammonia water, 0-5 parts of alcohol ether solvent, 0.5-5 parts of anti-settling agent, 0.1-2 parts of dispersing agent and 2-2.5 parts of defoaming agent.
The flaky ferric oxide powder can interact with zinc powder, an antirust pigment and a hydrophilic epoxy curing agent, so that the corrosion resistance of the aqueous flaky magnet powder heavy-duty anticorrosive primer can be improved, and the wear resistance and weather resistance of the aqueous flaky magnet powder heavy-duty anticorrosive primer can also be improved. The flaky ferroferric oxide has a flaky structure, hydrophobicity and conductivity, and the lamellar structures are superposed layer by layer in the coating to form a compact physical isolation layer; hydrophobicity prevents water molecules from contacting the metal substrate through the coating; the conductivity of the coating can quickly transfer the electrons lost by iron in the anode reaction to the surface of the coating, thereby preventing Fe & lt 3+ & gt from precipitating and slowing down electrochemical corrosion. The antirust pigment can further form electrochemical protection, and the hydrophilic epoxy curing agent can not only improve the acting force between the water-based flaky magnet powder heavy-duty anticorrosive primer and the matrix, but also can prevent corrosion and resist friction. Through the mutual synergistic effect of the substances, the corrosion resistance of the heavy-duty anticorrosive material can be greatly improved, the usage amount of zinc powder can be greatly reduced, and the pollution of the water-based sheet magnet powder heavy-duty anticorrosive primer to the environment is reduced.
The embodiment of the invention also provides a preparation method of the water-based flaky magnet powder heavy-duty anticorrosive primer, which comprises the following steps:
step1: preparation of component A
Mixing and stirring the aqueous epoxy resin and ammonia water uniformly, adjusting the pH value, adding water and an alcohol ether solvent, stirring at normal temperature, sequentially adding an anti-rust pigment (mica iron oxide), a dispersing agent, a defoaming agent and an anti-settling agent, stirring and dispersing uniformly at normal temperature, adding flaky ferric oxide powder and high-purity zinc powder, filtering after uniform dispersion, and sealing to obtain the paint. The component A prepared by the method can ensure that the flaky ferric oxide powder in the paint film is uniformly dispersed, and the uniform dispersion can form a lamellar net-shaped conductive structure in the paint, so that a better shielding effect and better electrochemical protection can be formed.
Step2: water-based sheet magnet powder heavy-duty anticorrosive primer
Firstly, uniformly mixing the component B and the component A at normal temperature to obtain the water-based sheet magnet powder heavy-duty anticorrosive primer.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment provides a water-based flaky magnet powder heavy-duty anticorrosion primer, which consists of a component A and a component B, wherein the weight ratio of the component A to the component B is 4.
Wherein the component A comprises: 30 parts of high-purity zinc powder, 40 parts of sheet ferric oxide powder, 40 parts of water-based epoxy resin, 10 parts of water, ammonia water, 2 parts of anti-settling agent, 1 part of dispersing agent and 2 parts of defoaming agent;
the component B comprises: a hydrophilic epoxy curing agent.
The embodiment also provides a preparation method of the water-based flaky magnet powder heavy-duty anticorrosive primer, which comprises the following steps:
step1: preparing a component A, mixing and stirring various raw materials uniformly at normal temperature, filtering and sealing to obtain the component A;
step2: preparing the aqueous flaky magnet powder heavy-duty anticorrosive primer, and mixing and stirring the component A and the component B uniformly at normal temperature to obtain the aqueous flaky magnet powder heavy-duty anticorrosive primer.
The water-based sheet magnet powder heavy-duty anticorrosive primer in example 1 is uniformly mixed and sprayed on a test panel, a paint film is dried after being dried at normal temperature for 24 days, and the main conventional technical indexes of the paint are tested after the test panel is placed for 7 days, wherein the data are as follows:
example 2
The embodiment provides a water-based flaky magnet powder heavy-duty anticorrosion primer, which consists of a component A and a component B, wherein the weight ratio of the component A to the component B is 6.
Wherein the component A comprises: 30 parts of high-purity zinc powder, 40 parts of sheet ferric oxide powder, 35 parts of water-based epoxy resin, 10 parts of water, ammonia water, 5 parts of alcohol ether solvent, 2 parts of anti-settling agent, 1 part of dispersing agent and 2 parts of defoaming agent;
the component B comprises: a hydrophilic epoxy curing agent.
The embodiment also provides a preparation method of the water-based flaky magnet powder heavy-duty anticorrosive primer, which comprises the following steps:
step1: preparing a component A, mixing and stirring various raw materials uniformly at normal temperature, filtering and sealing to obtain the component A;
step2: preparing the aqueous flaky magnet powder heavy-duty anticorrosive primer, and mixing and stirring the component A and the component B uniformly at normal temperature to obtain the aqueous flaky magnet powder heavy-duty anticorrosive primer.
The water-based sheet magnet powder heavy-duty anticorrosive primer in example 2 is uniformly mixed and sprayed on a test panel, a paint film is dried at normal temperature for 24 days, and the main conventional technical indexes of the paint are tested after the test panel is placed for 7 days, wherein the data are as follows:
embodiment 3
The embodiment provides a water-based flaky magnet powder heavy-duty anticorrosion primer, which consists of a component A and a component B, wherein the weight ratio of the component A to the component B is 8.
Wherein the component A comprises: by weight, 20 parts of high-purity zinc powder, 50 parts of flaky ferric oxide powder, 5 parts of an anti-rust pigment (aluminum tripolyphosphate), 30 parts of aqueous epoxy resin, 10 parts of water, ammonia water, 5 parts of an alcohol ether solvent, 2 parts of an anti-settling agent, 1 part of a dispersant and 2 parts of a defoaming agent;
the component B comprises: a hydrophilic epoxy curing agent.
The embodiment also provides a preparation method of the water-based flaky magnet powder heavy-duty anticorrosive primer, which comprises the following steps:
step1: preparing a component A, mixing and stirring various raw materials uniformly at normal temperature, filtering and sealing to obtain the component A;
step2: preparing the aqueous flaky magnet powder heavy-duty anticorrosive primer, and mixing and stirring the component A and the component B uniformly at normal temperature to obtain the aqueous flaky magnet powder heavy-duty anticorrosive primer.
The heavy-duty anticorrosion primer for the water-based sheet magnet powder in example 3 is uniformly mixed and sprayed on a test plate, a paint film is dried at normal temperature for 24 days, and the main conventional technical indexes of the paint are tested after the test plate is placed for 7 days, wherein the data are as follows:
example 4
The embodiment provides a water-based flaky magnet powder heavy-duty anticorrosion primer, which consists of a component A and a component B, wherein the weight ratio of the component A to the component B is 6.
Wherein the component A comprises: 25 parts of high-purity zinc powder, 45 parts of flaky ferric oxide powder, 5 parts of antirust pigment (ferrophosphorus powder), 35 parts of waterborne epoxy resin, 10 parts of water, ammonia water, 5 parts of alcohol ether solvent, 2 parts of anti-settling agent, 1 part of dispersant and 2 parts of defoaming agent;
the component B comprises: a hydrophilic epoxy curing agent.
The embodiment also provides a preparation method of the water-based sheet magnet powder heavy-duty anticorrosive primer, which comprises the following steps of:
step1: preparing a component A, mixing and stirring various raw materials uniformly at normal temperature, filtering and sealing to obtain a component A;
step2: preparing the aqueous flaky magnet powder heavy-duty anticorrosive primer, and uniformly mixing and stirring the component A and the component B at normal temperature to obtain the aqueous flaky magnet powder heavy-duty anticorrosive primer.
The water-based sheet magnet powder heavy-duty anticorrosive primer of example 4 is uniformly mixed and sprayed on a test panel, a paint film is dried after being dried at normal temperature for 24 days, and the main conventional technical indexes of the paint are tested after the test panel is placed for 7 days, wherein the data are as follows:
example 5
The embodiment provides a water-based sheet magnet powder heavy-duty anticorrosion primer, which consists of a component A and a component B, wherein the weight ratio of the component A to the component B is 6.
Wherein the component A comprises: 25 parts of high-purity zinc powder, 47 parts of flaky ferric oxide powder, 3 parts of antirust pigment (zinc phosphate), 35 parts of water-based epoxy resin, 10 parts of water, ammonia water, 5 parts of alcohol ether solvent, 2 parts of anti-settling agent, 1 part of dispersing agent and 2 parts of defoaming agent;
the component B comprises: a hydrophilic epoxy curing agent.
The embodiment also provides a preparation method of the water-based flaky magnet powder heavy-duty anticorrosive primer, which comprises the following steps:
step1: preparing a component A, mixing and stirring various raw materials uniformly at normal temperature, filtering and sealing to obtain the component A;
step2: preparing the aqueous flaky magnet powder heavy-duty anticorrosive primer, and mixing and stirring the component A and the component B uniformly at normal temperature to obtain the aqueous flaky magnet powder heavy-duty anticorrosive primer.
The water-based sheet magnet powder heavy-duty anticorrosive primer of example 5 is uniformly mixed and sprayed on a test panel, a paint film is dried after being dried at normal temperature for 24 days, and the main conventional technical indexes of the paint are tested after the test panel is placed for 7 days, wherein the data are as follows:
the water-based sheet magnet powder heavy-duty anticorrosive primer of the comparative example and the examples 4 to 5 are respectively coated on the surfaces of base materials with the same material and the same area, salt spray tests are carried out, 1200h salt spray resistance parallel control tests are carried out according to HG/T3668-2009, and the results of the three samples after the 1200h salt spray tests are shown in the attached figure 3.
Therefore, the water-based sheet magnet powder heavy-duty anticorrosive primer provided by the embodiment of the invention can meet the national standard, and the corrosion resistance is obviously higher than the national standard. The salt spray resistance test of comparative example 1 and the salt spray resistance test of the comparative example show that the performance of the water-based heavy-duty anticorrosive primer can be effectively improved by adopting the anticorrosive filler with uniformly dispersed flaky ferric oxide powder, and the proportion of the substances cannot be changed at will.
In summary, the water-based flake magnet powder heavy-duty anticorrosion primer of the invention utilizes zinc powder as a sacrificial anode, corrosion products such as zinc oxide and zinc hydroxide are formed in the coating, and these corrosion products form a shielding film, and the coating mainly plays a role in shielding, thereby protecting the cathode. The flaky ferric oxide powder has a flaky structure, hydrophobicity and conductivity, and the lamellar structures are stacked layer by layer in the coating to form a compact physical isolation layer; hydrophobicity prevents water molecules from contacting the metal substrate through the coating; the conductivity of the coating can quickly transfer the electrons lost by iron in the anode reaction to the surface of the coating, thereby preventing Fe & lt 3+ & gt from precipitating and slowing down electrochemical corrosion. Can reach the performance index of the traditional solvent type epoxy zinc-rich primer under the condition of lower zinc powder content, and has the advantages of energy conservation, environmental protection and high comprehensive cost performance.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (10)
1. The water-based sheet magnet powder heavy-duty anticorrosion primer is characterized by comprising the following components in percentage by weight: the paint comprises a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 10-30 parts of high-purity zinc powder, 40-60 parts of sheet ferric oxide powder, 0-20 parts of antirust pigment, 40-50 parts of water-based epoxy resin, 0-60 parts of water, ammonia water, 0-5 parts of alcohol ether solvent, 0.5-5 parts of anti-settling agent, 0.1-2 parts of dispersing agent and 2-2.5 parts of defoaming agent; the component B is: a hydrophilic epoxy curing agent.
2. The water-based sheet magnet powder heavy-duty anticorrosion primer as claimed in claim 1, wherein: the mass ratio of the component A to the component B is (4-8): 1.
3. the water-based sheet magnet powder heavy-duty anticorrosion primer as claimed in claim 1, which is prepared by the following steps:
(1) Preparation of component A: mixing and stirring the water-based epoxy resin and ammonia water uniformly, adjusting the pH value to be between 8 and 9, adding water and an alcohol ether solvent, stirring for 10 to 20min at normal temperature, sequentially adding an anti-rust pigment, a dispersing agent, a defoaming agent and an anti-settling agent, stirring and dispersing uniformly at normal temperature, adding 40 to 60 parts of flaky ferric oxide powder and 10 to 30 parts of high-purity zinc powder, filtering after dispersing uniformly, and sealing to obtain the zinc oxide nano-particles;
(2) The component A and the component B are mixed and dispersed evenly according to the proportion at normal temperature to obtain the water-based flaky magnet powder heavy-duty anticorrosive primer.
4. The water-based sheet magnet powder heavy-duty anticorrosion primer as claimed in claim 3, wherein: the high-purity zinc powder in the step (1) is 300-500 meshes; the flaky ferric oxide powder has 800-1000 meshes.
5. The water-based sheet magnet powder heavy-duty anticorrosion primer as claimed in claim 3, wherein: the antirust pigment in the step (1) is mica iron oxide, aluminum tripolyphosphate, zinc phosphate or ferrophosphorus powder.
6. The water-based sheet magnet powder heavy-duty anticorrosion primer as claimed in claim 3, wherein: the epoxy equivalent of the waterborne epoxy resin in the step (1) is 200-500.
7. The water-based sheet magnet powder heavy-duty anticorrosion primer as claimed in claim 3, wherein: the alcohol ether solvent in the step (1) is propylene glycol methyl ether, dipropylene glycol butyl ether, ethylene glycol butyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, diethylene glycol propyl ether, diethylene glycol butyl ether or a mixture thereof.
8. The water-based sheet magnet powder heavy-duty anticorrosion primer as claimed in claim 3, wherein: the stirring dispersion speed of the step (1) is 900-1100r/min, and the dispersion interval time is 10-20 minutes; the filtering screen in the step (1) is 100-200 meshes.
9. The water-based sheet magnet powder heavy-duty anticorrosion primer as claimed in claim 3, wherein: the component B hydrophilic epoxy curing agent is modified amine which takes water or hydrophilic solvent as a dispersion medium.
10. The water-based sheet magnet powder heavy-duty primer according to any one of claims 3 to 9, wherein: the component A and the component B are mixed and dispersed evenly according to the proportion at normal temperature to obtain the water-based flaky magnet powder heavy-duty anticorrosive primer.
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| CN107118664A (en) * | 2017-06-14 | 2017-09-01 | 无锡华东锌盾科技有限公司 | Bi-component aqueous epoxy zinc rich primer and preparation method thereof |
| CN107177277A (en) * | 2017-05-11 | 2017-09-19 | 惠州市惠阳区嘉泰涂料有限公司 | A kind of container watersoluble metal heavy anti-corrosion epoxy zinc rich primer and preparation method thereof |
| CN112341893A (en) * | 2020-12-07 | 2021-02-09 | 肖丽 | High-wear-resistance anti-corrosion coating and preparation method thereof |
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2021
- 2021-06-19 CN CN202110681841.3A patent/CN115491098A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107177277A (en) * | 2017-05-11 | 2017-09-19 | 惠州市惠阳区嘉泰涂料有限公司 | A kind of container watersoluble metal heavy anti-corrosion epoxy zinc rich primer and preparation method thereof |
| CN107118664A (en) * | 2017-06-14 | 2017-09-01 | 无锡华东锌盾科技有限公司 | Bi-component aqueous epoxy zinc rich primer and preparation method thereof |
| CN112341893A (en) * | 2020-12-07 | 2021-02-09 | 肖丽 | High-wear-resistance anti-corrosion coating and preparation method thereof |
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Application publication date: 20221220 |