CN106752659A - A kind of low prepared surface primer for rusted steel and preparation method - Google Patents
A kind of low prepared surface primer for rusted steel and preparation method Download PDFInfo
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- CN106752659A CN106752659A CN201510814584.0A CN201510814584A CN106752659A CN 106752659 A CN106752659 A CN 106752659A CN 201510814584 A CN201510814584 A CN 201510814584A CN 106752659 A CN106752659 A CN 106752659A
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Abstract
The invention provides a kind of low prepared surface primer for rusted steel and preparation method, one of which low prepared surface primer for rusted steel, including component A and B component；The component A includes that the raw material of following weight portion is constituted：Epoxy resin 5-50, filler 5-50, converting agent of iron rust 1-10, rust resisting pigment 1-50；The B component includes that the raw material of following weight portion is constituted：Curing agent 30-80, accelerator 1-10, silane coupler 1-15, low prepared surface primer for rusted steel of the invention have very strong adhesive force and excellent physical mechanical, antiseptic and rustproof and low prepared surface combination property functional coating.Its workability is excellent, supporting with the protective coating of general type can both be used as low-treated surface priming paint, can also be used separately as feature primer for rusted steel.
Description
Technical field
This patent is related to field of fine chemical, more particularly to a kind of low prepared surface primer for rusted steel and preparation method.
Background technology
Most convenient, the most economical means of steel substrate anti-corrosion are selection organic coatings, and effective coating service life is necessarily dependent upon good surface treatment and can just give full play to the antiseptic property of coating.Due to the limitation of coating decoration work condition environment and condition in reality, it tends to be difficult to be thoroughly surface-treated by rust cleaning standard.Base material generally after treatment still carries different degrees of corrosion thing and often in the state of high humidity.The common coating of direct application cannot often be expected antiseptic effect on this substrate surface.So needs are a kind of can directly to carry out the high performance low-treated surface coating of application over rust on the surface for not meeting rust cleaning standard, but coating on the market does not reach this requirement at present.
The content of the invention
The invention provides a kind of low prepared surface primer for rusted steel, with very strong adhesive force and excellent physical mechanical, antiseptic and rustproof and low prepared surface combination property functional coating.Its workability is excellent, supporting with the protective coating of general type can both be used as low-treated surface priming paint, can also be used separately as feature primer for rusted steel.
Concrete technical scheme of the invention is as follows：A kind of low prepared surface primer for rusted steel, including component A and B component；The component A includes that the raw material of following weight portion is constituted：Epoxy resin 5-50, filler 5-50, converting agent of iron rust 1-10, rust resisting pigment 1-50；The B component includes that the raw material of following weight portion is constituted：Curing agent 30-80, accelerator 1-10, silane coupler 1-15.
Above-mentioned low prepared surface primer for rusted steel, wherein, the component A also raw material including following weight portion is constituted：Mixed solvent 1-50, anti-settling agent 1-6, dispersant 0.01-5, bleeding agent 0.01-5, defoamer 0.01-5, thixotropic agent 0.01-5；The B component also raw material including following weight portion is constituted：Mixed solvent 5-50, toughener 1-25.
Above-mentioned low prepared surface primer for rusted steel, wherein, the component A includes that the raw material of following weight portion is constituted：Epoxy resin 28-35, mixed solvent 23-38, dispersant 0.1-0.3, defoamer 0.5-2, thixotropic agent 0.2-1, anti-settling agent 1-1.5, bleeding agent 0.1-0.3, converting agent of iron rust 2-6, rust resisting pigment 25-35, filler 20-25；The B component includes that the raw material of following weight portion is constituted：Curing agent 65-70, toughener 4-9, accelerator 2.5-4, silane coupler 2-3, mixed solvent 25-30.
Above-mentioned low prepared surface primer for rusted steel, wherein, the component A includes that the raw material of following weight portion is constituted：Epoxy resin 32, mixed solvent 30, dispersant 0.2, defoamer 1, thixotropic agent 0.5, anti-settling agent 1.2, bleeding agent 0.2, converting agent of iron rust 4, rust resisting pigment 30, filler 22；The B component includes that the raw material of following weight portion is constituted：Curing agent 70, toughener 7, accelerator 3, silane coupler 2.5, mixed solvent 30.
Above-mentioned low prepared surface primer for rusted steel, wherein, the component A is 5 with the mass ratio of B component：1.
Above-mentioned low prepared surface primer for rusted steel, wherein, the epoxy resin is liquid bisphenol A types epoxy resin or bisphenol f type epoxy resin；The curing agent is the solvent-free phenolic aldehyde amine curing agent of modified by cardanol；Silane coupler is Z-6011 silane couplers.
A kind of another side of the invention, preparation method of low prepared surface primer for rusted steel, comprises the following steps：
Epoxy resin and mixed solvent are sequentially added dispersant and anti-settling agent and stirred and evenly mixed under agitation and obtains the first mixture；
First mixture is sequentially added rust resisting pigment and filler and stirred and evenly mixed under agitation and obtains the second mixture；
Second mixture is added thixotropic agent and stirred and evenly mixed under agitation and obtains the 3rd mixture；
3rd mixture is sequentially added into defoamer, bleeding agent and converting agent of iron rust under agitation stir and evenly mix and obtain component A；
Curing agent, accelerator, toughener, mixed solvent and silane coupler are uniformly mixing to obtain B component in molten device；
Component A and B component are well mixed and can obtain low prepared surface primer for rusted steel.
Above-mentioned preparation method, wherein, it is described epoxy resin and mixed solvent are sequentially added dispersant and anti-settling agent and stirred and evenly mixed under the mixing speed of 2000-5000r/min obtain the first mixture.
Above-mentioned preparation method, wherein, it is described first mixture is sequentially added rust resisting pigment and filler and stirred and evenly mixed under the mixing speed of 800r/min obtain the second mixture；Described second mixture to be added under the mixing speed of 1200r/min thixotropic agent and stirring obtains the 3rd mixture, the size controlling of the 3rd mixture is within 40 μm.
Above-mentioned preparation method, wherein, it is described 3rd mixture is sequentially added into defoamer, bleeding agent and converting agent of iron rust under agitation to stir and evenly mix and be filtrated to get component A.
The invention provides a kind of low prepared surface primer for rusted steel, including component A and B component；The component A includes that the raw material of following weight portion is constituted：Epoxy resin 5-50, filler 5-50, converting agent of iron rust 1-10, rust resisting pigment 1-50；The B component includes that the raw material of following weight portion is constituted：Curing agent 30-80, accelerator 1-10, silane coupler 1-15, low prepared surface primer for rusted steel of the invention have very strong adhesive force and excellent physical mechanical, antiseptic and rustproof and low prepared surface combination property functional coating.Its workability is excellent；It is embodied in terms of film forming, with excellent low prepared surface application over rust workability, can be using the various method constructions such as spray, rolling, brush.Film is full, smooth, pin-free.The physical and mechanical properties such as film adhesive, impact, flexible, antirust, antiseptic property are excellent.Both supporting with the protective coating of exhausted general type can be used as low-treated surface priming paint, can also be used separately as feature primer for rusted steel.
Specific embodiment
In the following description, a large amount of concrete details are given to provide more thorough understanding of the invention.It is, however, obvious to a person skilled in the art that the present invention can be carried out without one or more of these details.In other examples, in order to avoid obscuring with the present invention, it is not described for some technical characteristics well known in the art.
In order to thoroughly understand the present invention, detailed step and detailed structure will be proposed in following description, to explain technical scheme.Presently preferred embodiments of the present invention is described in detail as follows, but in addition to these detailed descriptions, the present invention can also have other embodiment.
Embodiment 1, a kind of low prepared surface primer for rusted steel：Component A includes that the raw material of following weight portion is constituted：Epoxy resin 5, filler 5, converting agent of iron rust 1, rust resisting pigment 1；B component includes that the raw material of following weight portion is constituted：Curing agent 30, accelerator 1, silane coupler 1 is separately prepared to A, B component, when construction that A and B component is well mixed i.e. usable.
A kind of embodiment 2, low prepared surface primer for rusted steel, component A includes that the raw material of following weight portion is constituted：Epoxy resin 50, filler 50, converting agent of iron rust 10, rust resisting pigment 50；B component includes that the raw material of following weight portion is constituted：Curing agent 80, accelerator 10, silane coupler 15 is separately prepared to A, B component, when construction that A and B component is well mixed i.e. usable.
A kind of embodiment 3, low prepared surface primer for rusted steel, component A includes that the raw material of following weight portion is constituted：Epoxy resin 28, mixed solvent 23, dispersant 0.1, defoamer 0.5, thixotropic agent 0.2, anti-settling agent 1, bleeding agent 0.1, converting agent of iron rust 2, rust resisting pigment 25, filler 20；B component includes that the raw material of following weight portion is constituted：Curing agent 65, toughener 4, accelerator 2.5, silane coupler 2, mixed solvent 25 is separately prepared to A, B component, when construction that A and B component is well mixed i.e. usable.
A kind of embodiment 4, low prepared surface primer for rusted steel, component A includes that the raw material of following weight portion is constituted：Epoxy resin 35, mixed solvent 38, dispersant 0.3, defoamer 2, thixotropic agent 1, anti-settling agent 1.5, bleeding agent 0.3, converting agent of iron rust 6, rust resisting pigment 35, filler 25；B component includes that the raw material of following weight portion is constituted：Curing agent 70, toughener 9, accelerator 4, silane coupler 3, mixed solvent 30 is separately prepared to A, B component, when construction that A and B component is well mixed i.e. usable.
A kind of embodiment 5, low prepared surface primer for rusted steel, component A includes that the raw material of following weight portion is constituted：Epoxy resin 32, mixed solvent 30, dispersant 0.2, defoamer 1, thixotropic agent 0.5, anti-settling agent 1.2, bleeding agent 0.2, converting agent of iron rust 4, rust resisting pigment 30, filler 22；B component includes that the raw material of following weight portion is constituted：Curing agent 70, toughener 7, accelerator 3, silane coupler 2.5, mixed solvent 30 is separately prepared to A, B component, when construction that A and B component is well mixed i.e. usable.
In the present invention, mixed solvent is at least one in dimethylbenzene, butanol, aromatic solvent；Dispersant：Henkel 5040；Defoamer：EFFA2720, moral modest 6800；Thixotropic agent：N20；Anti-settling agent：201P；Bleeding agent：Polyoxyethylated alkyl phenol；Converting agent of iron rust：Tannic acid；Rust resisting pigment：Bayferrox4180 iron oxide reds, flake aluminum；Filler：At least one in sericite, barium sulfate, modified zinc phosphate；Toughener：1471 epoxy resin tougheners；Accelerator：DMP-30；Silane coupler：Z-6011.
Low prepared surface primer for rusted steel of the invention has excellent physics, chemistry and workability.
The technical indicator to low prepared surface primer for rusted steel of the present invention provides a specific experiment data below, as shown in table 1；
Table 1 is the technical indicator of product of the present invention
It can be seen that product of the invention has excellent acidproof, alkaline-resisting and salt fog resistance in table 1；And be can be seen that with excellent workability from surface drying time, the time of doing solid work；And with excellent bending property, impact resistance and adhesive force.
Product of the invention is contrasted with 5 sections of like products on the market experimental data below, as shown in table 2- tables 4：
Table 2
Table 4
As can be seen that the properties of product of low prepared surface primer for rusted steel of the invention are optimal from table 2- tables 4.
Epoxy resin of the present invention mainly selects liquid bisphenol A types epoxy resin or bisphenol f type epoxy resin as film-forming resin.Due to being well fitted for application over rust material to the adhesive force of base material with a large amount of hydroxyls containing polarized and ehter bond in the structure of bisphenol-A epoxy resin.On the basis of considering its relative molecular weight, the size of viscosity and coating cost and performance, determine that selection bisphenol-A type 601 and 6,101 two kind of epoxy resin of the trade mark are spelled and used after contrast test, can just obtain the benefit performance of correlation；Curing agent is the solvent-free phenolic aldehyde amine curing agent of a modified by cardanol, is mainly synthesized through Mannich reaction by anacardol and low-boiling amine.It has adhesive force good on low prepared surface material, low temperature, moist rapid curing, and good mechanical performance and chemical-resistant, antiseptic property are excellent, it is adaptable to which low prepared surface band becomes rusty the application on surface；Rust resisting pigment uses Bayferrox4180 iron oxide reds, and it has the quality and good dispersive property and acidproof, alkaline resistance properties high of stabilization, adds flake aluminum and the fast light and excellent rustless property of weatherability high is reached as rust resisting pigment.Thixotropic agent can be：Aerosil or organobentonite.Filler can be silica, calcium carbonate, magnesium carbonate etc..
The selection process of the bleeding agent in the present invention is as follows：On rust paint relies primarily on complexing agent, bleeding agent, transforming agent and corrosion inhibiter and corrosion infiltration, conversion, parcel is reached into purpose capable of coating with rust.Its type mainly has stable type, osmosis type, transformant three major types.We select corrosion stabilization and corrosion to convert comprehensive route in this research, and the constituent classification that stable, transformation will be played to corrosion carries out orthogonal test simultaneously.
（1）Corrosion stabilizer：Such as polyphosphoric acids aluminium, zinc yellow；
（2）Rust conversion agent：Such as tannic acid, citric acid；
（3）Surfactant：Such as have to chemosmotic polyoxyethylene phenolic ether, the polyoxyethylated alkyl phenol, experiment results proved of becoming rusty：Zinc yellow and chromic acid diphenylguanidine better performances.Because chromic acid diphenylguanidine has the effect for strengthening zinc yellow stabilization action of rust, reasonably using the surfactant with permeance property, namely the bleeding agent in the present invention is at least one in zinc yellow or chromic acid diphenylguanidine, the physical and mechanical properties of coating can be improved on the basis of coating antiseptic performance is not influenceed, and coordinates the application over rust ability of enhancing coating with corrosion stabilizer.
The selection of defoamer in the present invention is accomplished by the following way, modest 6800 defoamer of moral is particularly well-suited to high viscosity epoxy systems and eliminates microvesicle, with very strong froth breaking and brokenly bubble ability, EFKA2720 can abolish larger bubble, effect is significant is used cooperatively with 6800, experiment is brushed by airless spraying at the construction field (site) and precoating, coating surface is without obvious bubble and pin hole, use cut paint film, cross section is also without abscess, illustrate that the matching system defoaming effect is good, resulting compact in paint film is complete, the disadvantage such as pin-free, crackle.
In the present invention, silane coupler is the hybrid thing of a class silicon substrate, and basic molecular formula is:R-(CH2)nSi(OR)3.Wherein OR is hydrolyzable group, and R- is organo-functional group.System and comprehensively the research of silane rustless property start from early 1990s [3], the result of study to silane corrosion mechanism shows both at home and abroad, and its rust-proof mechanism is different from chromium passivation film.It is well known that chromium passivation film prevents corrosion of metal [4-5] to change the electrochemical properties of oxidation on metal surface layer;And the silane film for being formed at metal surface does not directly affect its oxide layer property.If corrosion product is accumulated without spreading apart at origin pit, origin can be caused to lose and to be passivated again, so that etch-stop process.By contrast test, in this study, Dow corning Z-6011 silane couplers are have selected, as a result show the anti-corrosive properties of the coating for having added amine silane coupling agent than not plus the coating of amine silane coupling agent is higher by 1 times.Mixed solvent in the present invention can be a kind of diluent.
A kind of another side of the invention, preparation method of low prepared surface primer for rusted steel, comprises the following steps：
Step S1：Epoxy resin and mixed solvent are sequentially added dispersant and anti-settling agent and stirred and evenly mixed under agitation and obtains the first mixture, specifically, epoxy resin and mixed solvent are sequentially added dispersant and anti-settling agent and stirred and evenly mixed under the mixing speed of 2000-5000r/min obtaining the first mixture；
Step S2：First mixture is sequentially added rust resisting pigment and filler and stirred and evenly mixed under agitation and obtains the second mixture, specifically, the first mixture is sequentially added rust resisting pigment and filler and stirred and evenly mixed under the mixing speed of 800r/min obtaining the second mixture；
Step S3：Second mixture is added thixotropic agent and stirred and evenly mixed under agitation and obtains the 3rd mixture, thixotropic agent is added under the mixing speed of 1200r/min wherein by the second mixture and stirring obtains the 3rd mixture, to also include that the size controlling of the 3rd mixture within 40 μm, can reach by way of changing mixing time；
Step S4：3rd mixture is sequentially added into defoamer, bleeding agent and converting agent of iron rust under agitation stir and evenly mix and obtain component A；Wherein, the 3rd mixture is sequentially added into defoamer, bleeding agent and converting agent of iron rust under agitation to stir and evenly mix and be filtrated to get component A, and is packed；
Step S5：Curing agent, accelerator, toughener, mixed solvent and silane coupler are uniformly mixing to obtain B component in molten device, and are filtered and packaged；
Step S6：Component A and B component are well mixed and can obtain low prepared surface primer for rusted steel.
In sum, the invention provides a kind of low prepared surface primer for rusted steel, including component A and B component；The component A includes that the raw material of following weight portion is constituted：Epoxy resin 5-50, filler 5-50, converting agent of iron rust 1-10, rust resisting pigment 1-50；The B component includes that the raw material of following weight portion is constituted：Curing agent 30-80, accelerator 1-10, silane coupler 1-15, low prepared surface primer for rusted steel of the invention have very strong adhesive force and excellent physical mechanical, antiseptic and rustproof and low prepared surface combination property functional coating.Its workability is excellent；It is embodied in terms of film forming, with excellent low prepared surface application over rust workability, can be using the various method constructions such as spray, rolling, brush.Film is full, smooth, pin-free.The physical and mechanical properties such as film adhesive, impact, flexible, antirust, antiseptic property are excellent.Both supporting with the protective coating of exhausted general type can be used as low-treated surface priming paint, can also be used separately as feature primer for rusted steel.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the present invention is not limited to the above specific embodiments, wherein the equipment and structure that do not describe in detail to the greatest extent are construed as being practiced with the common mode in this area；Any those of ordinary skill in the art, in the case where technical solution of the present invention ambit is not departed from, many possible variations and modification are all made to technical solution of the present invention using the methods and techniques content of the disclosure above, or the Equivalent embodiments of equivalent variations are revised as, this has no effect on substance of the invention.Therefore, every content without departing from technical solution of the present invention, according to technical spirit of the invention to any simple modification, equivalent variation and modification made for any of the above embodiments, still falls within the range of technical solution of the present invention protection.
Claims (10)
1. a kind of low prepared surface primer for rusted steel, it is characterised in that including component A and B component；The component A includes that the raw material of following weight portion is constituted：Epoxy resin 5-50, filler 5-50, converting agent of iron rust 1-10, rust resisting pigment 1-50；The B component includes that the raw material of following weight portion is constituted：Curing agent 30-80, accelerator 1-10, silane coupler 1-15.
2. a kind of low prepared surface primer for rusted steel as claimed in claim 1, it is characterised in that the component A also raw material including following weight portion is constituted：Mixed solvent 1-50, anti-settling agent 1-6, dispersant 0.01-5, bleeding agent 0.01-5, defoamer 0.01-5, thixotropic agent 0.01-5；The B component also raw material including following weight portion is constituted：Mixed solvent 5-50, toughener 1-25.
3. a kind of low prepared surface primer for rusted steel as claimed in claim 2, it is characterised in that the component A includes that the raw material of following weight portion is constituted：Epoxy resin 28-35, mixed solvent 23-38, dispersant 0.1-0.3, defoamer 0.5-2, thixotropic agent 0.2-1, anti-settling agent 1-1.5, bleeding agent 0.1-0.3, converting agent of iron rust 2-6, rust resisting pigment 25-35, filler 20-25；The B component includes that the raw material of following weight portion is constituted：Curing agent 65-70, toughener 4-9, accelerator 2.5-4, silane coupler 2-3, mixed solvent 25-30.
4. a kind of low prepared surface primer for rusted steel as claimed in claim 3, it is characterised in that the component A includes that the raw material of following weight portion is constituted：Epoxy resin 32, mixed solvent 30, dispersant 0.2, defoamer 1, thixotropic agent 0.5, anti-settling agent 1.2, bleeding agent 0.2, converting agent of iron rust 4, rust resisting pigment 30, filler 22；The B component includes that the raw material of following weight portion is constituted：Curing agent 70, toughener 7, accelerator 3, silane coupler 2.5, mixed solvent 30.
5. a kind of low prepared surface primer for rusted steel as claimed in claim 3, it is characterised in that the component A is 5 with the mass ratio of B component：1.
6. a kind of low prepared surface primer for rusted steel as described in claim 1-5 is any, it is characterised in that the epoxy resin is liquid bisphenol A types epoxy resin or bisphenol f type epoxy resin；The curing agent is the solvent-free phenolic aldehyde amine curing agent of modified by cardanol；Silane coupler is Z-6011 silane couplers.
7. a kind of preparation method of low prepared surface primer for rusted steel, it is characterised in that comprise the following steps：
Epoxy resin and mixed solvent are sequentially added dispersant and anti-settling agent and stirred and evenly mixed under agitation and obtains the first mixture；
First mixture is sequentially added rust resisting pigment and filler and stirred and evenly mixed under agitation and obtains the second mixture；
Second mixture is added thixotropic agent and stirred and evenly mixed under agitation and obtains the 3rd mixture；
3rd mixture is sequentially added into defoamer, bleeding agent and converting agent of iron rust under agitation stir and evenly mix and obtain component A；
Curing agent, accelerator, toughener, mixed solvent and silane coupler are uniformly mixing to obtain B component in molten device；
Component A and B component are well mixed and can obtain low prepared surface primer for rusted steel.
8. a kind of preparation method of low prepared surface primer for rusted steel as claimed in claim 7, characterized in that, it is described epoxy resin and mixed solvent are sequentially added dispersant and anti-settling agent and stirred and evenly mixed under the mixing speed of 2000-5000r/min obtain the first mixture.
9. a kind of preparation method of low prepared surface primer for rusted steel as claimed in claim 7, it is characterised in that it is described first mixture is sequentially added rust resisting pigment and filler and stirred and evenly mixed under the mixing speed of 800r/min obtain the second mixture；Described second mixture to be added under the mixing speed of 1200r/min thixotropic agent and stirring obtains the 3rd mixture, the size controlling of the 3rd mixture is within 40 μm.
10. a kind of preparation method of low prepared surface primer for rusted steel as claimed in claim 7, it is characterised in that described 3rd mixture is sequentially added into defoamer, bleeding agent and converting agent of iron rust under agitation to stir and evenly mix and be filtrated to get component A.
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Cited By (5)
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| CN108017982A (en) * | 2017-12-11 | 2018-05-11 | 湖南太子化工涂料有限公司 | A kind of resistance to impression two-component antirust paint, its preparation method and application |
| CN109111821A (en) * | 2018-07-19 | 2019-01-01 | 重庆友强高分子材料有限公司 | A kind of preparation method of low prepared surface low VOC universal type epoxy primer |
| CN111172523A (en) * | 2020-01-17 | 2020-05-19 | 厦门斯福泽瑞科技有限公司 | Water-based rust converting agent and preparation method and technology thereof |
| CN115058171A (en) * | 2022-06-24 | 2022-09-16 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Low-surface-treatment water-based paint for station house steel structure and preparation method thereof |
| CN115160894A (en) * | 2022-05-30 | 2022-10-11 | 石家庄市油漆厂 | High-solid low-surface-treatment moisture-curing epoxy resin coating and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108017982A (en) * | 2017-12-11 | 2018-05-11 | 湖南太子化工涂料有限公司 | A kind of resistance to impression two-component antirust paint, its preparation method and application |
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| CN111172523A (en) * | 2020-01-17 | 2020-05-19 | 厦门斯福泽瑞科技有限公司 | Water-based rust converting agent and preparation method and technology thereof |
| CN115160894A (en) * | 2022-05-30 | 2022-10-11 | 石家庄市油漆厂 | High-solid low-surface-treatment moisture-curing epoxy resin coating and preparation method and application thereof |
| CN115058171A (en) * | 2022-06-24 | 2022-09-16 | 中国铁道科学研究院集团有限公司金属及化学研究所 | Low-surface-treatment water-based paint for station house steel structure and preparation method thereof |
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