CN112391071A - Novel composite water-based rust conversion primer and preparation method thereof - Google Patents
Novel composite water-based rust conversion primer and preparation method thereof Download PDFInfo
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- CN112391071A CN112391071A CN202011217320.4A CN202011217320A CN112391071A CN 112391071 A CN112391071 A CN 112391071A CN 202011217320 A CN202011217320 A CN 202011217320A CN 112391071 A CN112391071 A CN 112391071A
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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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
- C09D5/002—Priming paints
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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
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
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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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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Abstract
The invention discloses a novel composite water-based rust conversion primer and a preparation method thereof, wherein the novel composite water-based rust conversion primer comprises a water-based polymer emulsion, a rust conversion agent, an antirust pigment, a filler, a defoaming agent, a dispersing agent, a film-forming assistant, an emulsion stabilizer, a thickening agent, a leveling agent and deionized water. The invention provides a novel composite water-based rust conversion primer and a preparation method thereof, which are coated once when in use, simplify the field construction process, are more convenient and practical, can effectively react with rust to generate a stable black chelate, and achieve the aim of corrosion resistance by forming an isolation effect.
Description
Technical Field
The invention relates to the technical field of metal corrosion prevention, in particular to a novel composite water-based rust conversion primer and a preparation method thereof.
Background
The corrosion of the steel materials not only causes huge economic loss, but also consumes a large amount of steel resources, and does not meet the requirement of the green development times. In order to reduce the losses due to corrosion, a number of measures have been taken, the most common and economical of which is to form a corrosion-resistant protective layer on the metal surface, in order to isolate the metal from the corrosive medium.
Traditional metal anticorrosion protective layer needs to put into more labour through loaded down with trivial details steel rust cleaning process, nevertheless often the rust cleaning effect is not ideal, can lead to harm such as steel body attenuate even, and the efficiency of construction is on the low side. The appearance and development of the rusty primer just solve the series of problems. The priming paint with rust is divided into three types of stable type, penetration type and conversion type according to the action mode. The stable and permeable antirust effects are general, and the antirust agent is suitable for the surface of steel with a thinner rust layer; the conversion type antirust effect is relatively good, and the conversion capability is influenced by the thickness and uniformity of the rust layer and the construction environment.
Currently, the majority of known systems for aqueous rust conversion primers are mixtures of tannic acid and phosphoric acid. A large number of active groups exist in residual acid of the system, so that the coating is unstable and cannot resist water; in addition, the spent acid can further corrode the steel substrate. In addition, the traditional primer process is the step-by-step coating of the primer and the finish, the problem of adhesive force among the primer, the finish, the base material and the rust needs to be comprehensively considered, the implementation process is complex, and the efficiency is low.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above and/or problems occurring in the conventional aqueous rust converting primer.
Accordingly, one of the objects of the present invention is to overcome the disadvantages of the existing water-based rust-converting primer and to provide a novel composite water-based rust-converting primer.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions: a novel composite water-based rust conversion primer comprises the following raw materials in percentage by mass: 40-59% of water-based polymer emulsion, 5-15% of rust conversion agent, 15-30% of antirust pigment, 5-15% of filler, 0.1-1.5% of defoaming agent, 0.1-2.0% of dispersing agent, 2-8% of film-forming assistant, 2-8% of emulsion stabilizer, 0.2-3.0% of thickening agent, 0.5-3.0% of flatting agent and the balance of deionized water.
As a preferable embodiment of the novel composite water-based rust conversion primer of the invention, wherein: the water-based polymer emulsion is styrene, acrylic acid copolymer emulsion and water-based acrylic acid emulsion.
As a preferable embodiment of the novel composite water-based rust conversion primer of the invention, wherein: the antirust pigment is one or two of modified aluminum tripolyphosphate, zinc phosphate and aluminum tripolyphosphate, and the filler is one or two of sericite, talcum powder and kaolin.
As a preferable embodiment of the novel composite water-based rust conversion primer of the invention, wherein: the antirust pigment is modified aluminum tripolyphosphate, and the filler is sericite and talcum powder.
As a preferable embodiment of the novel composite water-based rust conversion primer of the invention, wherein: the defoaming agent is polyether, and the film-forming auxiliary agent is polyether modified siloxane.
As a preferable embodiment of the novel composite water-based rust conversion primer of the invention, wherein: the defoaming agent is GSK-702, and the film-forming auxiliary agent is GSK-636.
As a preferable embodiment of the novel composite water-based rust conversion primer of the invention, wherein: the dispersant is LD-6302, the emulsion stabilizer is EE, the thickener is LD-2002, and the leveling agent is GSK-6440.
The invention also aims to provide a preparation method of the novel composite water-based rust conversion primer.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions: a preparation method of a novel composite water-based rust conversion primer comprises the following steps,
and (3) pulping by using a filler: dissolving a dispersing agent in deionized water, and adding an antirust pigment and a filler under the condition of magnetic stirring or mechanical stirring to prepare pigment filling slurry.
And (3) component completion: the aqueous polymer emulsion is added with a rust converting agent, a flatting agent, a defoaming agent, a thickening agent, a film forming auxiliary agent, an emulsion stabilizer and the balance of deionized water in turn in the stirring process.
As a preferable embodiment of the novel composite water-based rust conversion primer of the invention, wherein: in the filler pulping, the stirring speed is 600r/min, and the time is 10-20 min.
As a preferable embodiment of the novel composite water-based rust conversion primer of the invention, wherein: in the component supplement, the stirring speed is 600r/min, and the time is 20-30 min.
The invention provides a novel composite water-based rust conversion primer and a preparation method thereof, wherein 2-hydroxyphosphonoacetic acid is selected as a raw material to replace phosphoric acid, gallic acid replaces tannic acid, and the pH value is adjusted to prepare an integrated primer.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, specific embodiments thereof are described in detail below with reference to examples of the specification.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Adding 10.0g of deionized water into a three-neck flask, then adding 1.0g of emulsion stabilizer EEE, heating in a water bath to 70 ℃, cooling to room temperature after emulsion stabilizer EE is fully dissolved in water, and taking 10.0g for later use. Adding 60.0g of styrene and acrylic acid copolymer emulsion and 30.0g of water-based acrylic acid emulsion into the beaker A, adding 5.0g of the prepared reagent under the stirring condition of the rotating speed of 600r/min, and stirring for 5-10min to prepare water-based polymer emulsion for later use. 1.5g of dispersing agent (LD-6302) is dissolved in 50.0g of deionized water in a B beaker, and 15.0g of modified aluminum tripolyphosphate, 20.0g of sericite and 15.0g of kaolin are added under the condition of magnetic stirring or mechanical stirring until the mixture is uniformly mixed, so that pigment slurry is obtained. And adding 46.0g of water-based polymer emulsion into a C beaker, adding 30.0g of pigment filling slurry under stirring, uniformly stirring, adding 8g of prepared rust conversion agent, 6g of deionized water, continuously stirring at the same rotating speed for 5-10min, adding 2.0g of flatting agent (GSK-6450), 2.0g of wetting agent (LD-8107), 2.0g of thickening agent (LD-2002), 2.0g of defoaming agent (GSK-702) and 3.0g of polyether modified siloxane (GSK-636), and continuously stirring at the constant rotating speed for 10min to obtain the water-based rust conversion primer.
Example 2
Adding 10.0g of deionized water into a three-neck flask, then adding 1.0g of emulsion stabilizer EEE, heating in a water bath to 70 ℃, cooling to room temperature after emulsion stabilizer EE is fully dissolved in water, and taking 10.0g for later use. Adding 50.0g of styrene and acrylic acid copolymer emulsion and 40.0g of water-based acrylic acid emulsion into the beaker A, adding 5.0g of the prepared reagent under the stirring condition of the rotating speed of 600r/min, and stirring for 5-10min to prepare water-based polymer emulsion for later use. 1.5g of dispersing agent (LD-6302) is dissolved in 50.0g of deionized water in a B beaker, and 15.0g of modified aluminum tripolyphosphate, 20.0g of sericite and 15.0g of kaolin are added under the condition of magnetic stirring or mechanical stirring until the mixture is uniformly mixed, so that pigment slurry is obtained. And adding 52.0g of water-based polymer emulsion into a C beaker, adding 25.0g of pigment filling slurry under stirring, uniformly stirring, adding 8g of prepared rust conversion agent, continuously stirring at the same rotating speed for 10min, adding 2.0g of flatting agent (GSK-6450), 2.0g of wetting agent (LD-8107), 1.0g of thickening agent (LD-2002), 2.0g of defoaming agent (GSK-702) and 2.0g of polyether modified siloxane (GSK-636), and continuously stirring at the constant rotating speed for 10min to obtain the water-based rust conversion primer.
Example 3
Adding 10.0g of deionized water into a three-neck flask, then adding 1.0g of emulsion stabilizer EEE, heating in a water bath to 70 ℃, cooling to room temperature after emulsion stabilizer EE is fully dissolved in water, and taking 10.0g for later use. Adding 40.0g of styrene and acrylic acid copolymer emulsion and 50.0g of water-based acrylic acid emulsion into the beaker A, adding 5.0g of the prepared reagent under the stirring condition of the rotating speed of 600r/min, and stirring for 5-10min to prepare water-based polymer emulsion for later use. 1.5g of dispersing agent (LD-6302) is dissolved in 50.0g of deionized water in a B beaker, and 15.0g of modified aluminum tripolyphosphate, 20.0g of sericite and 15.0g of kaolin are added under the condition of magnetic stirring or mechanical stirring until the mixture is uniformly mixed, so that pigment slurry is obtained. And adding 58.0g of water-based polymer emulsion into a beaker C, adding 25.0g of pigment filling slurry under stirring, uniformly stirring, adding 8g of prepared rust conversion agent, continuously stirring at the same rotating speed for 5-10min, adding 2.0g of flatting agent (GSK-6450), 2.0g of wetting agent (LD-8107), 1.0g of thickening agent (LD-2002), 2.0g of defoaming agent (GSK-702) and 2.0g of polyether modified siloxane (GSK-636), and continuously stirring at the constant rotating speed for 10min to obtain the water-based rust conversion primer.
Example 4
The water-based rust conversion primers prepared in examples 1 to 3 were coated on steel No. 20 of 150x70x1mm having the same rust condition for 12 hours, measured for a surface dry time of 2H according to GB 6753.2-1986 and a real dry time of 5H according to GB/T1728-1989, and measured for a color by visual observation, an adhesion by GB/T5210-2006 pencil hardness and a salt spray resistance by GB/T1771-2007, and the obtained data are shown in table 1:
TABLE 1 Performance of the waterborne rust conversion primers prepared in examples 1-3
As can be seen from table 1, the aqueous rust conversion primer obtained in example 1 has a constant hardness, an increased adhesion, and an increased and then decreased salt spray resistance as the content of the aqueous acrylic emulsion increases, wherein the increased salt spray resistance occurs in styrene: acrylic acid copolymer emulsion: the trend of the data for the optimum values for the aqueous acrylic emulsion 5:4, beyond the conventional wisdom in the art, and the total weight of the total reaction system for examples 1, 2, 3 is equal, the styrene, acrylic copolymer emulsion in example 2: aqueous acrylic emulsion: the mass ratio of the emulsion stabilizer EE: 5:4:1 is the preferred ratio for best corrosion resistance.
According to the invention, through the selection of the proportion among the styrene, the acrylic acid copolymer emulsion, the water-based acrylic emulsion and the emulsion stabilizer EE and the selection of the method in the preparation steps, the matching of the used thickening agent, the film forming and the balance of the ionized water, the finally prepared water-based rust conversion primer has good hardness, adhesive force and corrosion resistance, and only needs to be coated once in the use process, the field construction process is simplified, the paint is more convenient and practical, the rust conversion primer with good performance can be firmly combined with the coated surface to avoid the situation that the primer is separated from the coating state and deepened due to corrosion and external force deprivation, and the prepared water-based rust conversion primer can effectively react with the surface of a coated object to form a stable black chelate, so that the purpose of corrosion prevention is achieved through the formation of an isolation effect.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, 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 modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A novel composite water-based rust conversion primer is characterized in that: the material comprises the following raw materials in percentage by mass: 40-59% of water-based polymer emulsion, 5-15% of rust conversion agent, 15-30% of antirust pigment, 5-15% of filler, 0.1-1.5% of defoaming agent, 0.1-2.0% of dispersing agent, 2-8% of film-forming assistant, 2-8% of emulsion stabilizer, 0.2-3.0% of thickening agent, 0.5-3.0% of flatting agent and the balance of deionized water.
2. The novel composite aqueous rust conversion primer according to claim 1, characterized in that: the water-based polymer emulsion is styrene, acrylic acid copolymer emulsion and water-based acrylic acid emulsion.
3. The novel composite aqueous rust conversion primer according to claim 1, characterized in that: the anti-rust pigment is one or two of modified aluminum tripolyphosphate, zinc phosphate and aluminum tripolyphosphate, and the filler is one or two of sericite, talcum powder and kaolin.
4. A novel composite aqueous rust conversion primer according to claim 1 or 3, characterized in that: the anti-rust pigment is modified aluminum tripolyphosphate, and the filler is sericite and talcum powder.
5. The novel composite aqueous rust conversion primer according to claim 1, characterized in that: the defoaming agent is polyether, and the film-forming auxiliary agent is polyether modified siloxane.
6. A novel composite aqueous rust conversion primer according to claim 1 or 5, characterized in that: the defoaming agent is GSK-702, and the film-forming auxiliary agent is GSK-636.
7. The novel composite aqueous rust conversion primer according to claim 1, characterized in that: the dispersing agent is LD-6302, the emulsion stabilizer is EE, the thickening agent is LD-2002, and the leveling agent is GSK-6440.
8. The preparation method of the novel composite water-based rust conversion primer is characterized by comprising the following preparation steps:
and (3) pulping by using a filler: dissolving a dispersing agent in deionized water, and adding an antirust pigment and a filler under the condition of magnetic stirring or mechanical stirring to prepare pigment filling slurry.
And (3) component completion: mixing pigment filling slurry and water-based polymer emulsion, and sequentially adding a rust converting agent, a flatting agent, a defoaming agent, a thickening agent, a film-forming assistant, an emulsion stabilizer and the balance of deionized water in the stirring process.
9. The method for preparing the novel composite aqueous rust conversion primer according to claim 8, characterized in that: in the filler pulping, the stirring speed is 600r/min, and the time is 10-20 min.
10. The method for preparing the novel composite aqueous rust conversion primer according to claim 8, characterized in that: in the component supplement, the stirring speed is 600r/min, and the time is 20-30 min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114456650A (en) * | 2022-03-08 | 2022-05-10 | 锦益得节能环保科技(山东)有限公司 | Aqueous rust conversion primer |
| CN115710448A (en) * | 2022-10-31 | 2023-02-24 | 中国人民解放军63796部队 | Anti-corrosion coating for special-shaped part of steel structure |
| CN116606573A (en) * | 2023-07-17 | 2023-08-18 | 山东孚日宣威新材料科技有限公司 | Water-based rust construction anti-corrosion paint |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114456650A (en) * | 2022-03-08 | 2022-05-10 | 锦益得节能环保科技(山东)有限公司 | Aqueous rust conversion primer |
| CN115710448A (en) * | 2022-10-31 | 2023-02-24 | 中国人民解放军63796部队 | Anti-corrosion coating for special-shaped part of steel structure |
| CN116606573A (en) * | 2023-07-17 | 2023-08-18 | 山东孚日宣威新材料科技有限公司 | Water-based rust construction anti-corrosion paint |
| CN116606573B (en) * | 2023-07-17 | 2023-09-15 | 山东孚日宣威新材料科技有限公司 | Water-based rust construction anti-corrosion paint |
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