CN113122104A - Water-based zinc-rich primer and preparation method thereof - Google Patents
Water-based zinc-rich primer and preparation method thereof Download PDFInfo
- Publication number
- CN113122104A CN113122104A CN202010028724.2A CN202010028724A CN113122104A CN 113122104 A CN113122104 A CN 113122104A CN 202010028724 A CN202010028724 A CN 202010028724A CN 113122104 A CN113122104 A CN 113122104A
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- Prior art keywords
- water
- zinc
- rich primer
- agent
- adhesive
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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
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
-
- 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
- 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
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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 zinc-rich primer comprises modified water-based resin and zinc powder, wherein the modified water-based resin comprises water-based glue, epoxy resin and acrylic resin; the modified water-based resin accounts for 3-10% of the water-based zinc-rich primer by mass, and the zinc powder accounts for 90-97% of the water-based zinc-rich primer by mass. The invention also provides a preparation method of the water-based zinc-rich primer. The water-based zinc-rich primer provided by the invention has good corrosion resistance and high adhesion.
Description
Technical Field
The invention relates to the field of coatings, in particular to a water-based zinc-rich primer and a preparation method thereof.
Background
The existing coating in the world, whether oil-based or water-based, has the main function of preventing the corrosion of metal surfaces (especially steel), and the existing coating is often short in corrosion prevention time after being coated with the coating and needs to be re-coated, especially on surfaces which are difficult to coat, such as bridges, iron towers, electric poles, ships and the like. Recoating is difficult, the cost is high, if recoating is not performed in time, the coated object loses protection and is seriously corroded, and the economic loss is serious. The anticorrosive ability of the paint mainly depends on the content and performance of the antirust pigment in the paint, the higher the content of the antirust pigment in the paint is, the better the anticorrosive ability is, but when the content of the antirust pigment in the paint exceeds 80%, the adhesive force of the paint is greatly reduced, and a paint film is caused to fall off. And the primer is an important branch of the coating.
Disclosure of Invention
In view of the above, the invention provides the water-based zinc-rich primer with good corrosion resistance and high adhesion.
It is also necessary to provide a preparation method of the water-based zinc-rich primer.
A water-based zinc-rich primer comprises modified water-based resin and zinc powder, wherein the modified water-based resin comprises water-based glue, epoxy resin and acrylic resin; the modified water-based resin accounts for 3-10% of the water-based zinc-rich primer by mass, and the zinc powder accounts for 90-97% of the water-based zinc-rich primer by mass.
Further, the zinc powder accounts for 95-97% of the water-based zinc-rich primer by mass.
Further, the water-based zinc-rich primer also comprises at least one auxiliary agent, and the auxiliary agent accounts for 1-3% of the water-based zinc-rich primer by mass.
Further, the auxiliary agent is at least one of a dispersing agent, an emulsifying agent, a defoaming agent, a wetting agent, a flatting agent, a thickening agent, an anti-sagging agent, a film-forming auxiliary agent, a curing agent, a drier, a thixotropic agent, a mildew preventive, an ultraviolet light absorber, a flame retardant and an antistatic agent.
The aqueous adhesive is at least one of polyvinyl alcohol aqueous adhesive, ethylene acetate aqueous adhesive, acrylic acid aqueous adhesive, polyurethane aqueous adhesive, epoxy aqueous adhesive, phenolic aldehyde aqueous adhesive, silicone adhesive and rubber adhesive.
Further, the water-based zinc-rich primer also comprises deionized water.
A preparation method of a water-based zinc-rich primer comprises the following steps: preparing modified water-based resin: adding the water-based adhesive into epoxy resin and acrylic resin, and uniformly mixing; sequentially adding the modified water-based resin, the zinc powder and the auxiliary agent into a reaction kettle in sequence under mechanical stirring according to the application; the modified water-based resin accounts for 3-10% of the water-based zinc-rich primer by mass, the zinc powder accounts for 90-97% of the water-based zinc-rich primer by mass, and the auxiliary agent accounts for 1-3% of the water-based zinc-rich primer by mass.
Further, the zinc powder accounts for 95-97% of the water-based zinc-rich primer by mass.
Further, the water-based zinc-rich primer also comprises at least one auxiliary agent, and the auxiliary agent accounts for 1-3% of the water-based zinc-rich primer by mass.
Further, the auxiliary agent is at least one of a dispersing agent, an emulsifying agent, a defoaming agent, a wetting agent, a flatting agent, a thickening agent, an anti-sagging agent, a film-forming auxiliary agent, a curing agent, a drier, a thixotropic agent, a mildew preventive, an ultraviolet light absorber, a flame retardant and an antistatic agent.
The aqueous adhesive is at least one of polyvinyl alcohol aqueous adhesive, ethylene acetate aqueous adhesive, acrylic acid aqueous adhesive, polyurethane aqueous adhesive, epoxy aqueous adhesive, phenolic aldehyde aqueous adhesive, silicone adhesive and rubber adhesive.
According to the water-based zinc-rich primer and the preparation method thereof, the water-based glue modified epoxy resin and acrylic resin are used, so that the adhesive force of the water-based zinc-rich primer can be improved, the water-based zinc-rich primer can still have high adhesive force when the zinc content of the water-based zinc-rich primer reaches over 95%, and the high zinc content can enable the water-based zinc-rich primer to have high anticorrosion capability.
Detailed Description
In order to further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be made on the specific embodiments, structures, features and effects of the water-based zinc-rich primer and the preparation method thereof provided by the present invention in combination with the preferred embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope 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.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention provides a water-based zinc-rich primer, which comprises a modified water-based resin and zinc powder.
The modified water-based resin accounts for 3-10% of the water-based zinc-rich primer by mass, and the zinc powder accounts for 90-97% of the water-based zinc-rich primer by mass. Preferably, the zinc powder accounts for 95-97% of the water-based zinc-rich primer by mass.
Wherein the modified water-based resin is used as a film-forming substance of the water-based zinc-rich primer.
The water-based adhesive is used for modifying the epoxy resin and the acrylic resin, so that the epoxy resin and the acrylic resin have good adhesive force.
Wherein the aqueous adhesive is at least one of polyvinyl alcohol aqueous adhesive, ethylene acetate aqueous adhesive, acrylic acid aqueous adhesive, polyurethane aqueous adhesive, epoxy aqueous adhesive, phenolic aldehyde aqueous adhesive, organosilicon adhesive, rubber adhesive and the like.
The water-based zinc-rich primer further comprises at least one auxiliary agent, and the auxiliary agent accounts for 1-3% of the water-based zinc-rich primer by mass.
Wherein the auxiliary agent is mainly used for improving certain performance of the water-based zinc-rich primer.
Specifically, the auxiliary agent is at least one of a dispersing agent, an emulsifying agent, a defoaming agent, a wetting agent, an anti-settling agent, an anti-skinning agent, a leveling agent, a thickening agent, an anti-sagging agent, a film-forming auxiliary agent, a curing agent, a drier, an anti-mildew agent, an ultraviolet light absorber, a flame retardant, an antistatic agent and the like.
Wherein the dispersant, the emulsifier, the defoamer, the wetting agent and the like are used for improving the performance of the water-based zinc-rich primer in the production process; the anti-settling agent, the anti-skinning agent and the like are used for improving the storage stability and the like of the water-based zinc-rich primer; the leveling agent, the thickening agent, the anti-sagging agent, the film forming auxiliary agent, the curing agent, the drier and the like are used for improving the workability, the film forming property and the like of the water-based zinc-rich primer; the mildew preventive, the ultraviolet light absorber, the flame retardant, the static discharge agent and the like are used for improving certain special properties of the water-based zinc-rich primer.
Wherein the dispersant is used for dispersing solid and liquid particles of inorganic or organic pigments which are difficult to dissolve in a liquid, while preventing sedimentation and coagulation of the particles and increasing the compatibility of oily and aqueous components in the same system. Inorganic dispersants commonly used are silicates (e.g., water glass) and alkali metal phosphates (e.g., sodium tripolyphosphate, sodium hexametaphosphate, sodium pyrophosphate, and the like). Organic dispersants include triethylhexyl phosphoric acid, sodium dodecyl sulfate, methyl amyl alcohol, cellulose derivatives, polyacrylamide, guar gum, glycol esters of fatty acids, and the like.
Wherein the emulsifier forms a stable emulsion from a mixed solution of two or more immiscible components.
Wherein the antifoaming agent is a substance for reducing the surface tension of water, solutions, suspensions, etc., preventing the formation of foam, or reducing or eliminating the original foam. The defoaming agent can be at least one of defoaming agents such as organic silicon, polyether modified polysiloxane and the like.
Wherein the wetting agent is a surfactant of a substance capable of making solid materials more easily wetted by water by reducing the surface energy thereof. The wetting agent may be at least one of sulfonated oil, soap, nekal BX, soybean lecithin, thiols, hydrazides, thiol acetals, and the like.
Wherein, the anti-settling agent is a rheological control agent of the paint, which causes the paint to have thixotropy and greatly improve the viscosity. The anti-settling agent can be at least one of organic bentonite, castor oil derivatives, fumed silica, polyolefin wax (particles), modified hydrogenated castor oil, N-methyl pyrrolidone solution of modified polyurea, titanate coupling agent, polyamide wax series, etc.
The anti-skinning agent is used for preventing the skinning of the coating from being related to the drying of the coating, and the anti-skinning agent commonly used in the industry is pure methyl ethyl ketoxime.
The leveling agent is a common paint auxiliary agent, can promote a paint to form a flat, smooth and uniform coating film in a drying film-forming process, can effectively reduce the surface tension of a finishing liquid, improves the leveling property and uniformity of the finishing liquid, can improve the permeability of the finishing liquid, can reduce the possibility of generating spots and marks during brushing, increases the coverage property, and enables the film to be formed uniformly and naturally. Many types of leveling agents are used, and the types of leveling agents used in different coatings are different. High boiling point solvents (e.g., isophorone, diacetone alcohol, Solvesso150, etc.) or butyl cellulose may be used in solvent-based finishes. In the water-based coating agent, a surfactant, polyacrylic acid, carboxymethyl cellulose, or the like is used.
The thickener is also called gelatinizer, is a substance capable of increasing the viscosity of latex and liquid, and is also called paste when being used for food. The thickening agent can increase the viscosity of the system, so that the system is kept in a uniform and stable suspension state or an emulsion state, or forms a gel; most thickeners combine an emulsifying action. Can be divided into two main categories of natural and synthetic. The natural products are mostly prepared from plants and seaweed containing polysaccharide viscous substances, such as starch, acacia, pectin, agar, gelatin, seaweed gel, carrageenan, dextrin, etc., and general gelatin, soluble starch, polysaccharide derivatives, etc. can be used in cosmetics; the synthetic product includes carboxymethyl cellulose, propylene glycol alginate, methyl cellulose, sodium starch phosphate, sodium carboxymethyl cellulose, sodium alginate, casein, sodium polyacrylate, polyoxyethylene, and polyvinylpyrrolidone.
The anti-sagging agent refers to a compound which can improve the viscosity of the paint and can prevent sagging during the curing or construction process of the paint. The absolute majority of these compounds can give paints with thick deformations. The modified clay is the primary thixotropic aid for the alkyd coating system. The modified bentonite forms a gel structure in the paint through hydrogen bonds. They may be added to the mill base, by grinding to disrupt the aggregate structure, or in the form of a pregel.
The film-forming aid is also referred to as coalescing aid. Can promote the plastic flow and elastic deformation of the high molecular compound, improve the coalescence performance and form a film in a wider construction temperature range. Is a readily disappearing plasticizer. The strong solvent of ether alcohol high polymer is commonly used, such as propylene glycol butyl ether, propylene glycol methyl ether acetate and the like.
The curing agent, also known as a hardener, curing agent or setting agent, is a substance or mixture that enhances or controls the curing reaction. The resin curing is carried out by adding a curing (crosslinking) agent to a thermosetting resin through chemical reactions such as condensation, ring closure, addition or catalysis to cause irreversible change of the thermosetting resin. The curing agent comprises the following chemical components: aliphatic amines, aromatic amines, amidoamines, latent curing amines, and urea substitutes.
Wherein the water-based zinc-rich primer further comprises deionized water. Wherein the deionized water is used as a solvent of the water-based zinc-rich primer.
The invention also provides a preparation method of the water-based zinc-rich primer, which comprises the following steps:
the first step is as follows: preparing modified water-based resin: adding the water-based adhesive into epoxy resin and acrylic resin, and uniformly mixing;
the second step is that: sequentially adding the modified water-based resin, the zinc powder and the auxiliary agent into a reaction kettle in sequence under mechanical stirring according to the application; the modified water-based resin accounts for 3-10% of the water-based zinc-rich primer by mass, the zinc powder accounts for 90-97% of the water-based zinc-rich primer by mass, and the auxiliary agent accounts for 1-3% of the water-based zinc-rich primer by mass.
In the second step, preferably, the zinc powder accounts for 95 to 97 percent of the aqueous zinc-rich primer by mass.
In the second step, the auxiliary agent is at least one of a dispersing agent, an emulsifying agent, a defoaming agent, a wetting agent, a flatting agent, a thickening agent, an anti-sagging agent, a film-forming auxiliary agent, a curing agent, a drier, a thixotropic agent, an anti-mildew agent, an ultraviolet light absorber, a flame retardant, an antistatic agent and the like.
After the step of the second step, further comprising the steps of inspecting; filtering and packaging after the inspection is qualified; and warehousing.
The paint film adhesive force (grid cutting method) of the water-based zinc-rich primer provided by the invention can reach level 1, and the paint film adhesive force is higher; the salt spray resistance is more than 2000 hours, and the chemical resistance and the corrosion resistance are excellent; high coating hardness and high mechanical performance.
According to the water-based zinc-rich primer and the preparation method thereof, the water-based glue modified epoxy resin and acrylic resin are used, so that the adhesive force of the water-based zinc-rich primer can be improved, the water-based zinc-rich primer can still have high adhesive force when the zinc content of the water-based zinc-rich primer reaches over 95%, and the high zinc content can enable the water-based zinc-rich primer to have high anticorrosion capability. In addition, the water-based zinc-rich primer provided by the invention is suitable for coating various metal and nonmetal surfaces, and has wide market prospect.
Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The water-based zinc-rich primer comprises modified water-based resin and zinc powder, and is characterized in that the modified water-based resin comprises water-based glue, epoxy resin and acrylic resin; the modified water-based resin accounts for 3-10% of the water-based zinc-rich primer by mass, and the zinc powder accounts for 90-97% of the water-based zinc-rich primer by mass.
2. The water-based zinc-rich primer according to claim 1, wherein the zinc powder accounts for 95-97% of the water-based zinc-rich primer by mass.
3. The water-based zinc-rich primer according to claim 1, further comprising at least one auxiliary agent, wherein the auxiliary agent accounts for 1-3% of the water-based zinc-rich primer by mass.
4. The aqueous zinc-rich primer according to claim 3, wherein the auxiliary agent is at least one of a dispersant, an emulsifier, a defoamer, a wetting agent, a leveling agent, a thickener, an anti-sagging agent, a film-forming auxiliary agent, a curing agent, a drier, a thixotropic agent, a mildewproof agent, an ultraviolet light absorber, a flame retardant, and an antistatic agent.
5. The water-based zinc-rich primer according to claim 1, wherein the water-based adhesive is at least one of a polyvinyl alcohol-based water-based adhesive, an ethylene acetate-based water-based adhesive, an acrylic water-based adhesive, a polyurethane-based water-based adhesive, an epoxy water-based adhesive, a phenolic water-based adhesive, a silicone-based adhesive, and a rubber-based adhesive.
6. The aqueous zinc rich primer of claim 1 further comprising deionized water.
7. A preparation method of a water-based zinc-rich primer is characterized by comprising the following steps:
preparing modified water-based resin: adding the water-based adhesive into epoxy resin and acrylic resin, and uniformly mixing; and
sequentially adding the modified water-based resin, the zinc powder and the auxiliary agent into a reaction kettle in sequence under mechanical stirring according to the application; the modified water-based resin accounts for 3-10% of the water-based zinc-rich primer by mass, the zinc powder accounts for 90-97% of the water-based zinc-rich primer by mass, and the auxiliary agent accounts for 1-3% of the water-based zinc-rich primer by mass.
8. The method for preparing the water-based zinc-rich primer according to claim 7, wherein the zinc powder accounts for 95-97% of the water-based zinc-rich primer by mass.
9. The method for preparing the water-based zinc-rich primer according to claim 7, wherein the auxiliary agent is at least one of a dispersant, an emulsifier, a defoamer, a wetting agent, a leveling agent, a thickener, an anti-sagging agent, a film-forming auxiliary agent, a curing agent, a drier, a thixotropic agent, a mildewproof agent, an ultraviolet light absorber, a flame retardant and an antistatic agent.
10. The method for preparing the water-based zinc-rich primer according to claim 7, wherein the water-based adhesive is at least one of a polyvinyl alcohol water-based adhesive, an ethylene acetate water-based adhesive, an acrylic acid water-based adhesive, a polyurethane water-based adhesive, an epoxy water-based adhesive, a phenolic water-based adhesive, a silicone adhesive and a rubber adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010028724.2A CN113122104A (en) | 2020-01-11 | 2020-01-11 | Water-based zinc-rich primer and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010028724.2A CN113122104A (en) | 2020-01-11 | 2020-01-11 | Water-based zinc-rich primer and preparation method thereof |
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| CN113122104A true CN113122104A (en) | 2021-07-16 |
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| CN202010028724.2A Pending CN113122104A (en) | 2020-01-11 | 2020-01-11 | Water-based zinc-rich primer and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116200065A (en) * | 2022-11-18 | 2023-06-02 | 南京海配新材料有限公司 | Anti-settling paste for high-solid-content zinc-rich paint and preparation method thereof |
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| JP2007099832A (en) * | 2005-09-30 | 2007-04-19 | Yokogawa Bridge Corp | Organic zinc-rich coating composition |
| CN109486360A (en) * | 2018-12-13 | 2019-03-19 | 广州集泰化工股份有限公司 | A kind of aqueous one-component organic zinc-rich paint and its preparation method and application |
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2020
- 2020-01-11 CN CN202010028724.2A patent/CN113122104A/en active Pending
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| JP2007099832A (en) * | 2005-09-30 | 2007-04-19 | Yokogawa Bridge Corp | Organic zinc-rich coating composition |
| CN109486360A (en) * | 2018-12-13 | 2019-03-19 | 广州集泰化工股份有限公司 | A kind of aqueous one-component organic zinc-rich paint and its preparation method and application |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116200065A (en) * | 2022-11-18 | 2023-06-02 | 南京海配新材料有限公司 | Anti-settling paste for high-solid-content zinc-rich paint and preparation method thereof |
| CN116200065B (en) * | 2022-11-18 | 2024-02-20 | 南京海配新材料有限公司 | Anti-settling paste for high-solid-content zinc-rich paint and preparation method thereof |
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Application publication date: 20210716 |