CN109535939B - Antirust primer and application thereof - Google Patents
Antirust primer and application thereof Download PDFInfo
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- CN109535939B CN109535939B CN201910040843.7A CN201910040843A CN109535939B CN 109535939 B CN109535939 B CN 109535939B CN 201910040843 A CN201910040843 A CN 201910040843A CN 109535939 B CN109535939 B CN 109535939B
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- rust
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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
- C09D163/04—Epoxynovolacs
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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
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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
-
- 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 relates to an anti-rust primer and application thereof, wherein the anti-rust primer comprises the following components in percentage by mass: 25 to 35 percent of modified resin, 5 to 15 percent of vegetable acid, 5 to 12 percent of fluororesin, 0.1 to 2 percent of tackifier, 0.1 to 2 percent of thickening agent and the balance of deionized water. The modified resin has multiple functions, forms higher crosslinking degree with the plant acid and the fluororesin through the multiple functions, obtains a passive film, is stably attached to the surface of metal, and prevents the rust of a metal substrate; the test shows that the anti-corrosive primer disclosed by the invention is high in drying speed, small in working time and beneficial to improving the processing efficiency, the middle part of the anti-corrosive primer does not contain heavy metal salt and phosphate, the anti-corrosive primer is small in harm to human bodies and environment, safe and environment-friendly, suitable for large-scale popularization and application, and can be widely used for corrosion prevention of buildings, ships, ports, wharfs, railways, factory equipment facilities and chemical equipment.
Description
Technical Field
The invention relates to the technical field of chemicals, in particular to an anti-rust primer and application thereof.
Background
The rust-proof primer is a primer generally used for treating a metal substrate, and mainly plays a role in rust prevention. The traditional rust-proof primer is added with chromate, phosphate and combination products thereof, etc. to improve the corrosion-proof performance. These components are harmful to human body, especially hexavalent chromium has carcinogenicity, and the primer contains heavy metal salts such as chromium, which causes serious harm to constructors and environment.
Disclosure of Invention
Based on the above, the anti-rust primer provided by the invention has the characteristics of high drying speed, excellent anti-rust performance, good adhesion and the like, does not contain heavy metal salt and phosphate, has small harm to human bodies and environment, and is safe and environment-friendly.
The anti-rust primer comprises the following components in percentage by mass:
according to the anti-rust primer, the modified resin has multiple functions, and forms a higher crosslinking degree with the vegetable acid and the fluororesin through the multiple functions to obtain a passive film, and the passive film is stably attached to the surface of metal to prevent the metal substrate from being rusted; the test shows that the anti-corrosive primer disclosed by the invention is high in drying speed, small in working time and beneficial to improving the processing efficiency, the middle part of the anti-corrosive primer does not contain heavy metal salt and phosphate, the anti-corrosive primer is small in harm to human bodies and environment, safe and environment-friendly, suitable for large-scale popularization and application, and can be widely used for corrosion prevention of buildings, ships, ports, wharfs, railways, factory equipment facilities and chemical equipment.
In one embodiment, the anti-rust primer comprises the following components in percentage by mass:
in one embodiment, the modified resin is a modified epoxy resin.
In one embodiment, the modified resin is a novolac epoxy resin.
In one embodiment, the plant acid is selected from one or more of gallic acid, p-coumaric acid, and caffeic acid.
In one embodiment, the fluororesin is an aqueous fluorocarbon resin.
In one embodiment, the fluororesin is a fluororesin 23-19.
In one embodiment, the tackifier is an aqueous rosin tackifier.
In one embodiment, the thickening agent is a cellulose ether.
The antirust primer can be applied to the surface antirust of metal, has good antirust effect and good adhesive force, and can maintain long-term effective antirust.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the following description. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
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.
Test methods not specifically identified in the following examples were selected according to conventional methods and conditions, or according to adjustments suggested in the commercial specifications. The reagents or instruments used are not indicated by the manufacturer, and are conventional products available commercially.
The invention provides an anti-rust primer which comprises the following components in percentage by mass:
the modified resin has multiple functions, forms higher crosslinking degree with the plant acid and the fluororesin through the multiple functions, obtains a passive film, is stably attached to the surface of metal, and prevents the metal substrate from being rusted.
In one embodiment, the anti-rust primer comprises the following components in percentage by mass:
in one embodiment, the modified resin is modified epoxy resin, the functional group of the epoxy resin is utilized to generate multidirectional crosslinking, the modified resin and vegetable acid, fluororesin and the like form high crosslinking degree, a passivation film with stable performance is obtained, and the modified resin, the tackifier and the thickening agent are combined to obtain good adhesive force, so that the long-term effect of the antirust primer is ensured. Preferably, the modified resin is novolac epoxy resin, the novolac epoxy resin is made of bisphenol A epoxy resin and phenolic resin, the modified epoxy resin with multiple functionality can be formed, the crosslinking degree is high, meanwhile, due to the fact that a large number of benzene rings exist in the framework, the modified epoxy resin has high heat deformation temperature and excellent heat stability, the property is introduced into the anti-rust primer, and the practicability of the anti-rust primer is improved.
In one embodiment, the plant acid is selected from one or more of gallic acid, p-coumaric acid and caffeic acid. The gallic acid, p-coumaric acid and caffeic acid are polyhydroxy plant acids, can be crosslinked with modified resin through hydroxyl and carboxyl to obtain stable crosslinked skeleton, and can generate complex reaction with metal rust to convert the metal rust into a part of the film.
In one embodiment, the fluororesin is a water-based fluorocarbon resin, which increases the water resistance, weather resistance and tear resistance of the rust inhibitive primer. Preferably, the fluororesin is 23-19, the solid content is 48 +/-3%, and the fluorine content is more than or equal to 9%.
In one embodiment, the tackifier is an aqueous rosin tackifier, and can be selected from commercially available aqueous rosin tackifying emulsions, the solid content of the aqueous rosin tackifying emulsions is 50% -60%, and the viscosity of the aqueous rosin tackifying emulsions is 500-1200 mPa.S with a Brookfield viscometer (3#, 60RPM, 25 ℃).
In one embodiment, the thickening agent is cellulose ether, and the cellulose ether is a polyhydroxy high molecular compound, which can provide tackifying effect for the reaction liquid and simultaneously can be in crosslinking reaction with the modified resin, the vegetable acid and the fluororesin. The thickener may be, for example, methylcellulose, hydroxypropylmethylcellulose, hydroxyethylcellulose, carboxymethylhydroxyethylcellulose, carboxymethylcellulose or the like.
The antirust primer can be applied to the surface antirust of metal, has good antirust effect and good adhesive force, and can maintain long-term effective antirust.
The antirust primer is a rust-free aqueous antirust material, has better performance than the traditional antirust paint, has the advantages of rust removal, corrosion prevention, high temperature resistance, good adhesive force, long corrosion prevention time, simple and convenient construction, environmental protection, labor saving, time saving and the like, is suitable for treating a rust layer with the thickness of less than 30 mm, can be directly coated on the surface of the rust layer without leaving a metal surface of non-rust foreign matters (the non-rust foreign matters refer to materials attached to the metal surface, such as an old paint film, silt and the like, and other loose attachments are completely removed), can be converted into basic materials for rust by utilizing the complexing capacity of the rust layer, is combined with an original matrix into a whole, passivates different iron rust to form a film, has good sealing function, rust removal performance and adhesive force, and can solve the problems of secondary rust removal before rust removal after rust removal and secondary rust removal in a short period caused by.
The anti-rust primer disclosed by the invention has the advantage of high temperature resistance, the higher the temperature is, the faster the curing is, the high temperature of 880 ℃ can be resisted after the anti-rust primer is coated, and the anti-rust primer has a fireproof function; the water-based antirust primer can be used in a humid environment, has the environmental humidity of below 80 percent, can be directly sprayed on the surface of wet steel, and has good waterproofness; the paint does not contain heavy metal salt and phosphate, is nontoxic and harmless to human bodies, and can be widely used for corrosion prevention of buildings, ships, ports, wharfs, railways, factory equipment facilities and chemical equipment.
The following is an example description.
Example 1
The anti-rust primer comprises the following components in percentage by mass:
and 23-19% of fluororesin with a solid content of 49% and a fluorine content of about 10%.
The water-based rosin tackifier has a solid content of 55 percent and a Brookfield viscometer (3#, 60RPM, 25 ℃) of 600 mPa.S.
Example 2
The anti-rust primer comprises the following components in percentage by mass:
and 23-19% of fluororesin with solid content of 48% and fluorine content of about 9%.
The solid content of the water-based rosin tackifying emulsion is 53 percent, and the Brookfield viscometer (3#, 60RPM, 25 ℃) is 550 mPa.S.
Example 3
The anti-rust primer comprises the following components in percentage by mass:
and 23-19 parts of fluororesin, wherein the solid content is 51%, and the fluorine content is about 12%.
The solid content of the water-based rosin tackifying emulsion is 56 percent, and the Brookfield viscometer (3#, 60RPM, 25 ℃) is 700 mPa.S.
Example 4
The anti-rust primer comprises the following components in percentage by mass:
and 23-19 parts of fluororesin, the solid content is 50%, and the fluorine content is about 13%.
The solid content of the water-based rosin tackifying emulsion is 58 percent, and the Brookfield viscometer (3#, 60RPM, 25 ℃) is 1100 mPa.S.
Example 5
The anti-rust primer comprises the following components in percentage by mass:
and 23-19% of fluororesin with the solid content of 49% and the fluorine content of about 15%.
The solid content of the water-based rosin tackifying emulsion is 60 percent, and the Brookfield viscometer (3#, 60RPM, 25 ℃) is 850 mPa.S.
The rust inhibitive primers of examples 1 to 5 were used for the test, and the test results are shown in table 1.
TABLE 1
As is clear from Table 1, the rust inhibitive primers of examples 1 to 5 are stable in properties and can be maintained for a long period of time without deterioration in a relatively high temperature environment.
The rust inhibitive primers of examples 1 to 5 were applied to the surface of a stainless steel, the thickness of the rust inhibitive primer film was 42 μm, and then the performance of the rust inhibitive primer film was tested, and the test results are shown in Table 2.
TABLE 2
| Standard requirements | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Speed of drying, surface drying (min) | ≤30 | 18 | 15 | 20 | 15 | 13 |
| Speed of drying, actual drying (h) | ≤8 | 3.5 | 3 | 4 | 3 | 3 |
| Adhesion (grade) | 0 | 0 | 0 | 0 | 0 | 0 |
| Water resistance (h) | ≥240 | 302 | 305 | 310 | 303 | 300 |
| Salt spray resistance (h) | ≥360 | 405 | 410 | 416 | 408 | 411 |
As can be seen from the test results in table 2, the anti-corrosive primers of examples 1 to 5 are fast in drying speed, reduce man-hours, contribute to improvement of processing efficiency, corrosion resistance, water resistance, and excellent in adhesion, are suitable for large-scale popularization and application, and can be widely used for corrosion prevention of buildings, ships, ports, docks, railways, plant facilities, and chemical equipment.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. The anti-rust primer is characterized by comprising the following components in percentage by mass:
the modified resin is modified epoxy resin, the plant acid is selected from one or more of gallic acid, p-coumaric acid and caffeic acid, the fluororesin is water-based fluorocarbon resin, the tackifier is water-based rosin tackifier, and the thickener is cellulose ether.
2. The anti-rust primer according to claim 1, characterized by comprising the following components in percentage by mass:
3. the rust inhibitive primer according to claim 1 or 2, characterized in that the modified resin is a novolac epoxy resin.
4. The rust inhibitive primer according to claim 1 or 2, characterized in that the fluororesin is a fluororesin 23-19.
5. The use of the rust inhibitive primer according to any one of claims 1 to 4 for surface rust inhibitive of metals.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910040843.7A CN109535939B (en) | 2019-01-16 | 2019-01-16 | Antirust primer and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910040843.7A CN109535939B (en) | 2019-01-16 | 2019-01-16 | Antirust primer and application thereof |
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| CN109535939A CN109535939A (en) | 2019-03-29 |
| CN109535939B true CN109535939B (en) | 2021-03-19 |
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| CN116273804A (en) * | 2023-03-23 | 2023-06-23 | 德州实华化工有限公司 | Corrosion prevention method suitable for chemical corrosion online repair and application thereof |
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| CN104893504B (en) * | 2015-06-12 | 2017-01-25 | 漳州鑫展旺化工有限公司 | Surface tolerant high-permeability priming paint for rusty surfaces |
| CN105670460A (en) * | 2016-03-15 | 2016-06-15 | 刘可 | Water-based environmentally-friendly epoxy anti-corrosion primer and preparation method thereof |
| US10934438B2 (en) * | 2017-04-27 | 2021-03-02 | Axalta Coating Systems Ip Co., Llc | Coatings and methods for using and producing the same |
| CN107099221A (en) * | 2017-05-18 | 2017-08-29 | 安徽工业大学 | A kind of steel surface underloading aqueous rusty self-lubricating coating and preparation method thereof |
| CN108193199B (en) * | 2017-12-20 | 2020-10-27 | 苏州禾川化学技术服务有限公司 | Corrosion-resistant and rust-resistant conversion film-forming liquid for iron parts |
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Effective date of registration: 20191104 Address after: No.131, nanwujiatun village, Nancun Town, Pingdu City, Qingdao City, Shandong Province Applicant after: Gao Hongye Address before: 518101 Longxia Community, Songgang Street, Baoan District, Shenzhen City, Guangdong Province Applicant before: Shenzhen Yonghong Semiconductor Biotechnology Co., Ltd. |
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Effective date of registration: 20200911 Address after: B205, 2 / F, new metropolis Commercial Plaza, No. 2008, Xinzhou South Road, Xingang community, Fubao street, Futian District, Shenzhen City, Guangdong Province Applicant after: Shenzhen Jingde Shihao material Biotechnology Co., Ltd Address before: No.131, nanwujiatun village, Nancun Town, Pingdu City, Qingdao City, Shandong Province Applicant before: Gao Hongye |
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