CN114574014B - Water-based inorganic zinc-rich paint easy to construct and preparation method and application thereof - Google Patents
Water-based inorganic zinc-rich paint easy to construct and preparation method and application thereof Download PDFInfo
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- CN114574014B CN114574014B CN202210215065.2A CN202210215065A CN114574014B CN 114574014 B CN114574014 B CN 114574014B CN 202210215065 A CN202210215065 A CN 202210215065A CN 114574014 B CN114574014 B CN 114574014B
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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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
- C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/45—Anti-settling agents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
Abstract
The invention belongs to the technical field of zinc-rich paint, and discloses an aqueous inorganic zinc-rich paint easy to construct, and a preparation method and application thereof. The aqueous inorganic zinc-rich paint easy to construct comprises a component A and a component B; the component A comprises, by weight, 10-25 parts of potassium silicate resin, 1-10 parts of organic silicon resin emulsion, 0.5-1.5 parts of anti-settling agent a, 0.5-1.5 parts of anti-settling agent b, 0.1-10 parts of anti-settling auxiliary agent, 0.1-1 part of defoaming agent, 0-10 parts of deionized water, 1-3 parts of zinc powder corrosion inhibitor, 0.3-3 parts of multifunctional flash rust agent and 0.1-10 parts of leveling agent; the component B comprises 55-75 parts of zinc powder and 0-5 parts of rust-proof pigment. The aqueous inorganic zinc-rich paint solves the problem of poor construction property of the existing aqueous inorganic zinc-rich primer, and simultaneously improves the leveling property of a paint film, the sedimentation resistance of zinc powder and the cracking and chalking resistance of the paint film.
Description
Technical Field
The invention relates to the technical field of zinc-rich paint, in particular to an easy-to-construct water-based inorganic zinc-rich paint, and a preparation method and application thereof.
Background
The water-based inorganic zinc-rich primer is widely used in the heavy-duty corrosion prevention field, such as bridges, port machinery, petrochemical industry and the like, due to excellent environmental protection, safety and corrosion resistance. However, in recent years, the popularization and application of the aqueous inorganic zinc-rich primer are greatly limited, and the application is mainly due to the fact that the aqueous inorganic zinc-rich primer is poor in workability, and the poor in workability is mainly characterized in the aspects of poor sagging resistance, insufficient leveling property, easiness in pulverization and falling of a paint film, easiness in sedimentation of zinc powder and the like. Because the water-based inorganic zinc-rich primer has low resin content and high-density powder (zinc powder) content, the powder is extremely easy to settle after being added with the resin, so that paint liquid is layered, the workability is poor, and the leveling property and the sagging resistance effect are poor; in addition, the inorganic resin has high drying speed, so that the flow leveling is easy to occur in the drying process, and especially the paint film is easy to pulverize, crack and the like when the dry film thickness is more than 60 mu m.
Currently, in the prior art, the problem of poor sagging resistance is solved by controlling the proportion of the anti-settling agent to the powder, for example: the Chinese patent No. 106752156B enables the thickness of the once-used wet film to reach 250 mu m, effectively improves the sagging resistance of the water-based inorganic zinc-rich paint, but the water-based inorganic zinc-rich paint has poor water resistance, can influence the initial water resistance of a paint film and limits the application range of the paint film.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an aqueous inorganic zinc-rich coating easy to construct, and a preparation method and application thereof.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, the invention provides an aqueous inorganic zinc-rich coating easy to construct, which comprises a component A and a component B;
the component A comprises, by weight, 10-25 parts of potassium silicate resin, 1-10 parts of organic silicon resin emulsion, 0.5-1.5 parts of anti-settling agent a, 0.5-1.5 parts of anti-settling agent b, 0.1-10 parts of anti-settling auxiliary agent, 0.1-1 part of defoaming agent, 0-10 parts of deionized water, 1-3 parts of zinc powder corrosion inhibitor, 0.3-3 parts of multifunctional flash rust agent and 0.1-10 parts of leveling agent; the component B comprises 55-75 parts of zinc powder and 0-5 parts of rust-proof pigment;
wherein the mass ratio of the component A to the component B is 1 (2-5);
the anti-settling agent a is a polyurethane thickener; the anti-settling agent b is a sodium polyamide thickener.
As a preferred embodiment of the easy-to-construct aqueous inorganic zinc-rich paint, the component A comprises, by weight, 20-25 parts of potassium silicate resin, 5-10 parts of organic silicon resin emulsion, 0.5-1.5 parts of anti-settling agent a, 0.5-1.5 parts of anti-settling agent b, 0.1-10 parts of anti-settling auxiliary agent, 0.1-0.5 part of defoaming agent, 0-10 parts of deionized water, 1-3 parts of zinc powder corrosion inhibitor, 0.3-0.5 part of multifunctional rust flash agent and 0.3-0.5 part of leveling agent; the component B comprises 60-65 parts of zinc powder and 1-2 parts of rust-proof pigment.
As a preferred embodiment of the easy-to-construct aqueous inorganic zinc-rich paint, the potassium silicate resin has a modulus of > 5.0M and a pH value of > 11.
As a preferred embodiment of the easy-to-construct aqueous inorganic zinc-rich paint, the average particle size of the organic silicon resin emulsion is less than 100nm; the organosilicon content in the organosilicon resin emulsion is more than 30 percent.
As a preferable implementation mode of the easy-to-construct aqueous inorganic zinc-rich paint, the anti-settling auxiliary agent is nano montmorillonite or hydroxyethyl cellulose.
As a preferable implementation mode of the easy-to-construct aqueous inorganic zinc-rich paint, the defoaming agent is one or more of organosilicon defoaming agent and mineral oil defoaming agent.
As a preferable implementation mode of the easy-to-construct aqueous inorganic zinc-rich paint, the zinc powder is spherical zinc powder; the mesh number of the zinc powder is more than or equal to 800 meshes.
As a preferable embodiment of the easy-to-construct aqueous inorganic zinc-rich paint, the rust-proof pigment is one or more of zinc phosphate, aluminum tripolyphosphate and lithium silicate.
In a second aspect, the invention provides a preparation method of the water-based inorganic zinc-rich paint easy to construct, which comprises the following steps:
(1) Adding the deionized water and the multifunctional flash rust agent into the organic silicon resin emulsion while stirring to obtain a premix;
(2) Adding the anti-settling agent b and the anti-settling auxiliary agent into the premix, and dispersing and stirring uniformly to disperse the mixture;
(3) Adding the anti-settling agent a, the potassium silicate resin, the defoaming agent and the leveling agent into the dispersion mixed liquid while stirring, and uniformly dispersing to obtain the component A.
(4) And uniformly mixing the zinc powder and the rust-proof pigment to obtain the component B.
(5) Mixing the component A and the component B according to the mass ratio.
As a preferred embodiment of the preparation method of the easy-to-construct aqueous inorganic zinc-rich paint, in the step (1), the stirring speed is 600r/min-1000r/min; in the step (2), the stirring speed is 1500r/min-2500r/min, and the stirring time is 20min-30min; in the step (3), the stirring speed is 600r/min-1000r/min, and the stirring time is 10min-20min.
In the third aspect, the water-based inorganic zinc-rich paint easy to construct is applied to steel structures, bridges, containers or petrochemical paints.
Compared with the prior art, the invention has the beneficial effects that:
the aqueous inorganic zinc-rich paint has excellent sedimentation resistance of zinc powder through a composite anti-sedimentation system and a zinc powder corrosion inhibition technology, and improves sagging resistance of a paint film and simultaneously ensures that the paint film has excellent leveling property and initial water resistance; namely, the aqueous inorganic zinc-rich paint solves the problem of poor construction property of the existing aqueous inorganic zinc-rich primer, and improves the leveling property of a paint film, the sedimentation resistance of zinc powder resistance and the cracking and chalking resistance of the paint film.
Detailed Description
For a better description of the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to the following specific examples. It will be appreciated by persons skilled in the art that the specific embodiments described herein are for purposes of illustration only and are not intended to be limiting.
The test methods used in the examples are conventional methods unless otherwise specified; the materials, reagents and the like used, unless otherwise specified, are all commercially available.
The raw materials used in the following examples and comparative examples are described below, but are not limited to these materials:
potassium silicate resin: hubei Pasteur E777-1 with modulus > 5.0M, pH > 11, density of 1.0-1.5g/ml, viscosity (see GB/T1723-93 paint viscosity assay, detection conditions: 25deg.C, coating-4 cup) less than 20S;
silicone resin emulsion: the average grain diameter is less than 100nm, the organic silicon content is more than 30%, and the nonvolatile matter mass is more than 35%;
anti-settling agent a: polyurethane thickener, dow chemical 8W;
anti-settling agent b: a sodium polyamide thickener, di Sibaron AQ 7120;
anti-settling auxiliary agent: nano montmorillonite, 9350 of deep bamboo chemistry;
defoamer, pick chemical BYK-012;
zinc powder corrosion inhibitor: amide organic matters with corrosion inhibition effect on zinc powder, pH value of 8-10, density of 1.0-1.4g/ml, and water solubility;
multifunctional flash rust agent: organic compound which can cover zinc powder and has anti-flash rust effect, shanghai Jie D-80;
leveling agent: organosilicon leveling agent, TEGO-4200;
zinc powder: the mesh number is 800;
rust-preventive pigment: sea chest ZPA.
The aqueous inorganic zinc-rich paint composition components of examples 1 to 3 and comparative examples 1 to 4 are shown in Table 1.
The preparation method of the water-based inorganic zinc-rich paint comprises the following steps:
(1) Placing the organic silicon resin emulsion in a clean reaction kettle, and adding deionized water and a multifunctional flash rust agent under the condition of 600r/min while stirring to obtain a premix;
(2) Adding an anti-settling agent b and an anti-settling auxiliary agent into the premix, and dispersing for 20min at 2000r/min to obtain a dispersed mixed solution;
(3) Adding an anti-settling agent a, potassium silicate resin, an antifoaming agent and a leveling agent into the dispersion mixed solution under the condition of 800r/min while stirring, dispersing for 10min, filtering and packaging to obtain the component A.
(4) And uniformly mixing zinc powder and an antirust pigment to obtain a component B.
In the above examples and comparative examples, the performance test methods were as follows:
the components in the examples and the comparative examples are respectively mixed and diluted with water to be suitable for viscosity spraying or rolling coating.
(1) Leveling property is judged according to whether the surface of a paint film has pinholes (watched by a 15-time magnifying glass) and whether the surface is flat, the surface is free of pinholes, the leveling property is judged to be qualified in film forming property, and otherwise, the paint film is judged to be unqualified.
(2) Impact resistance and salt spray resistance and workability were tested according to HG/T3668-2020 Zinc-rich primer.
(3) The flash rust resistance is tested according to HG/T5176-2017 water-based anti-corrosion paint for steel structures, wherein the welding seam flash rust resistance test method is that a sand-blast T-shaped steel plate with buried welding is adopted, and the roughness is 40-70 mu m.
(4) The zinc powder resistance subsides to the longest time without delamination after the component A and the component B are mixed.
(5) Sag resistance is the maximum wet film thickness which is not sag in the construction process, and is measured by a wet film thickness gauge.
(6) The cracking resistance and pulverization thickness is the maximum thickness of the dry film without cracking and pulverization, the phenomenon of no cracking and pulverization is observed by a 4-time magnifying glass, and the thickness is measured by a dry film thickness gauge.
Table 1 coating compositions and test results for examples and comparative examples
Compared with the comparative example, the aqueous inorganic zinc-rich paint of the embodiment has excellent construction property, good impact resistance and salt spray resistance, good flash rust resistance, zinc powder sedimentation resistance and cracking resistance and large pulverization thickness. The anti-sagging wet film can reach 300 mu m at most, the leveling effect is good, the component A and the component B can not be layered for more than 8 hours at most after being mixed, the phenomena of pulverization, cracking and the like do not occur when the dry film thickness is higher than 150 mu m, and the anti-sagging wet film has the environmental protection property, the safety and the excellent anti-corrosion property of the traditional inorganic zinc-rich primer. Can be widely used in the fields of steel structures, bridges, containers, petrochemical coatings and the like.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present invention.
Claims (8)
1. The water-based inorganic zinc-rich paint easy to construct is characterized by comprising a component A and a component B;
the component A comprises, by weight, 10-25 parts of potassium silicate resin, 1-10 parts of organic silicon resin emulsion, 0.5-1.5 parts of anti-settling agent a, 0.5-1.5 parts of anti-settling agent b, 0.1-10 parts of anti-settling auxiliary agent, 0.1-1 part of defoaming agent, 0-10 parts of deionized water, 1-3 parts of zinc powder corrosion inhibitor, 0.3-3 parts of multifunctional flash rust agent and 0.1-10 parts of leveling agent; the component B comprises 55-75 parts of zinc powder and 1.5-5 parts of rust-proof pigment;
wherein the mass ratio of the component A to the component B is 1 (2-5);
the anti-settling agent a is a polyurethane thickener; the anti-settling agent b is a sodium polyamide thickener;
the zinc powder corrosion inhibitor is an amide organic matter with corrosion inhibition effect on zinc powder, the pH value is 8-10, the density is 1.0-1.4g/ml, and the zinc powder corrosion inhibitor is soluble in water.
2. The easy construction aqueous inorganic zinc-rich paint according to claim 1, wherein the potassium silicate resin has a modulus > 5.0 and a ph > 11.
3. The easy construction aqueous inorganic zinc-rich paint according to claim 1, wherein the silicone resin emulsion has an average particle diameter of < 100nm; the organosilicon content in the organosilicon resin emulsion is more than 30 percent.
4. The easy-to-construct aqueous inorganic zinc-rich paint of claim 1, wherein the anti-settling agent is nano montmorillonite.
5. The aqueous inorganic zinc-rich paint easy to construct according to claim 1, wherein the defoaming agent is one or more of an organosilicon defoaming agent and a mineral oil defoaming agent.
6. The aqueous inorganic zinc-rich paint easy to construct according to claim 1, characterized in that the zinc powder is spherical zinc powder; the mesh number of the zinc powder is more than or equal to 800 meshes.
7. The aqueous inorganic zinc-rich paint easy to construct according to claim 1, wherein the rust-preventive pigment is one or more of zinc phosphate, aluminum tripolyphosphate and lithium silicate.
8. The application of the easy-to-construct aqueous inorganic zinc-rich paint as claimed in any one of claims 1 to 7 in steel structures or containers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210215065.2A CN114574014B (en) | 2022-03-03 | 2022-03-03 | Water-based inorganic zinc-rich paint easy to construct and preparation method and application thereof |
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| CN202210215065.2A CN114574014B (en) | 2022-03-03 | 2022-03-03 | Water-based inorganic zinc-rich paint easy to construct and preparation method and application thereof |
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| CN114574014B true CN114574014B (en) | 2023-04-21 |
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| CN115216165B (en) * | 2022-07-21 | 2023-05-05 | 杭萧钢构股份有限公司 | Steel structure water-based anticorrosive paint and preparation method thereof |
| CN115042353A (en) * | 2022-08-15 | 2022-09-13 | 广东纳德新材料有限公司 | Resin grinding block release agent and preparation method thereof |
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| CN106118149B (en) * | 2016-06-30 | 2018-10-12 | 无锡华东锌盾科技有限公司 | A kind of aqueous inorganic zinc-enriched coating and preparation method thereof |
| CN107163634A (en) * | 2017-06-08 | 2017-09-15 | 重庆三峡油漆股份有限公司 | Outer emulsification waterborne inorganic einc-rich primer |
| CN108867390A (en) * | 2018-07-13 | 2018-11-23 | 永嘉县博宇建设有限公司 | A kind of Pile Installation Platform |
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