CN113652131A - Water-based acrylic primer-topcoat integrated coating suitable for rusty steel structure and steel structure renovation coating, and preparation method and application method thereof - Google Patents
Water-based acrylic primer-topcoat integrated coating suitable for rusty steel structure and steel structure renovation coating, and preparation method and application method thereof Download PDFInfo
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- CN113652131A CN113652131A CN202111145724.1A CN202111145724A CN113652131A CN 113652131 A CN113652131 A CN 113652131A CN 202111145724 A CN202111145724 A CN 202111145724A CN 113652131 A CN113652131 A CN 113652131A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 99
- 239000010959 steel Substances 0.000 title claims abstract description 99
- 238000000576 coating method Methods 0.000 title claims abstract description 74
- 239000011248 coating agent Substances 0.000 title claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 238000009418 renovation Methods 0.000 title claims description 28
- 239000003973 paint Substances 0.000 claims abstract description 60
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 18
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000839 emulsion Substances 0.000 claims abstract description 17
- 238000000227 grinding Methods 0.000 claims abstract description 16
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000049 pigment Substances 0.000 claims abstract description 13
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims abstract description 12
- 239000000080 wetting agent Substances 0.000 claims abstract description 12
- 230000002378 acidificating effect Effects 0.000 claims abstract description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 10
- 229920001577 copolymer Polymers 0.000 claims abstract description 10
- 239000006184 cosolvent Substances 0.000 claims abstract description 10
- 229920000570 polyether Polymers 0.000 claims abstract description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004677 Nylon Substances 0.000 claims abstract description 9
- 229920001778 nylon Polymers 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 9
- 239000002270 dispersing agent Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000000654 additive Substances 0.000 claims abstract description 5
- 239000006254 rheological additive Substances 0.000 claims abstract description 5
- 239000013530 defoamer Substances 0.000 claims abstract description 4
- 230000000996 additive effect Effects 0.000 claims abstract description 3
- 239000002002 slurry Substances 0.000 claims description 17
- 239000006185 dispersion Substances 0.000 claims description 14
- 239000003673 groundwater Substances 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000001680 brushing effect Effects 0.000 claims description 4
- 229920002522 Wood fibre Polymers 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000002025 wood fiber Substances 0.000 claims description 3
- ZTMNRKZFOYFOIE-UHFFFAOYSA-N 1-butoxyhexyl acetate Chemical compound C(C)(=O)OC(CCCCC)OCCCC ZTMNRKZFOYFOIE-UHFFFAOYSA-N 0.000 claims description 2
- JDSQBDGCMUXRBM-UHFFFAOYSA-N 2-[2-(2-butoxypropoxy)propoxy]propan-1-ol Chemical compound CCCCOC(C)COC(C)COC(C)CO JDSQBDGCMUXRBM-UHFFFAOYSA-N 0.000 claims description 2
- 239000004925 Acrylic resin Substances 0.000 claims description 2
- 229920000178 Acrylic resin Polymers 0.000 claims description 2
- 229920000180 alkyd Polymers 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- -1 dodecyl alcohol ester Chemical class 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N ethyl butylhexanol Natural products CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 238000010422 painting Methods 0.000 claims 8
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000006115 industrial coating Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
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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
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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
- C09D7/61—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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- 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
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- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
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Abstract
The invention discloses a water-based acrylic primer-topcoat integrated coating suitable for renovating and coating a rusted steel structure and a steel structure, a preparation method and an application method thereof, belongs to the field of coatings, and solves the problem of high difficulty in renovating and coating the rusted steel structure and the steel structure. The invention comprises water, sericite, modified nylon powder, precipitated barium sulfate, pigment, dispersant and polyether siloxane copolymer defoamer; weakly acidic acrylic acid copolymer emulsion; rheological additive, base material wetting agent, higher alcohol defoamer, film forming additive and cosolvent. Preparation: dispersing part of water, a dispersing agent, a polyether siloxane copolymer defoaming agent, sericite, modified nylon powder, precipitated barium sulfate, a pigment and a rheological aid, grinding, adding the rest raw materials, dispersing, and then processing the silk. The application comprises the following steps: directly coated on the rusted steel structure surface or directly used for renewing and recoating the aged coating of the steel structure. The invention can perfectly convert rust, has good compatibility with different types of old paint films, and has good adhesive force after being combined with the old paint films.
Description
Technical Field
The invention belongs to the field of water-based industrial coatings, and particularly relates to a water-based acrylic primer-topcoat integrated coating suitable for renovating and coating a rusted steel structure and a steel structure, and a preparation method and an application method thereof.
Background
Because the steel structure has the advantages of light dead weight, high anti-seismic performance, high plasticity, convenient construction, short construction period and the like, the steel structure is widely applied to buildings such as large-scale gymnasiums, exhibition centers, trade centers, industrial plants, warehouses and the like. In recent years, with the rapid development of infrastructure in China, the number of buildings using steel structures as load-bearing members has rapidly increased. Therefore, the steel structure plays an increasingly important role in engineering construction. At the same time, people face more severe corrosion problems of steel structures. At present, the economic loss caused by steel structure corrosion reaches over hundreds of billions of dollars every year all over the world, and the steel structure corrosion endangers the safe operation of building structures, so that catastrophic accidents caused by corrosion are rare.
In conclusion, the corrosion protection of the steel structure has important practical significance. The anti-corrosion coating is an important way for realizing the corrosion protection of the steel structure. The current development of anticorrosive coatings mainly presents the following trends: following the environmental friendly policy, the development and application of the pollution-free or low-pollution anticorrosive coating are carried out; the requirements of coating construction on the surface roughness and cleanliness of a steel structure are reduced, and an anticorrosive coating with low requirements on construction conditions is developed; the use cost of the anticorrosive paint is reduced, and the high-performance multipurpose anticorrosive paint suitable for different regions and different environments is developed.
In addition, after the steel structure is protected by the anticorrosive coating for the service life, the coating can be gradually damaged, and the local part of the steel structure can even be rusted. Therefore, as the steel structure building protective coating ages, the renovation and recoating of the steel structure building protective coating become a problem to be solved urgently. However, most of steel structure water-based anticorrosive renovation coatings have high construction condition requirements, and in order to obtain excellent anticorrosive effect, the steel structure surface treatment requirements are harsh, and the substrate needs to be strictly derusted and treated by an old paint film before construction. The working procedures of rust removal and old paint film treatment not only can increase the construction cost, but also can hardly treat the dead angle of the complex operation surface thoroughly. Especially for steel structural products which are difficult to completely remove rust, such as: the realization of direct renovation and coating of rusty and old paint films is especially important in large buildings, bridges, complex equipment and protection occasions requiring labor, time and cost saving. On the other hand, substrate processing becomes particularly troublesome due to restrictions on the use environment and the like (for example, areas with fire hazards), but at present, attention is paid to a refurbishing technique after the steel structure anticorrosive coating is aged. In order to facilitate the refinishing, it is also very important to develop a steel structure coating which can be directly used for refinishing.
Disclosure of Invention
The invention aims to provide a water-based acrylic primer-topcoat coating suitable for rusty steel structures and steel structure renovation coating, and aims to solve the problems of high requirements on construction conditions and high treatment difficulty of rusty steel structures and steel structure renovation coating.
The invention also aims to provide a preparation method of the water-based acrylic primer-topcoat coating which is suitable for rusty steel structures and steel structure renovation coating.
The invention further aims to provide an application method of the water-based acrylic primer-topcoat coating which is suitable for rusty steel structures and steel structure renovation coating.
The technical scheme of the invention is as follows:
(one) to,
The water-based acrylic primer-topcoat integrated coating suitable for rusty steel structures and steel structure renovation coating comprises the following raw materials in parts by weight:
grinding the water slurry: 10.2-12.85 parts of water, 3-5 parts of sericite, 10-15 parts of modified nylon powder, 8-10 parts of precipitated barium sulfate, 2-8.5 parts of pigment, 0.8-1.2 parts of dispersing agent and 0.2-0.3 part of polyether siloxane copolymer defoaming agent;
rust conversion emulsion: 46-50 parts of weakly acidic acrylic acid copolymer emulsion;
auxiliary agent: 2.5-3.5 parts of rheological additive, 0.3-0.5 part of base material wetting agent, 0.1-0.2 part of high-carbon alcohol defoaming agent, 0.5-0.8 part of film-forming additive and 3-4 parts of cosolvent.
Further, the pH value of the weak acidic acrylic acid copolymer emulsion is 3-5.
Further, the rheological aid employs nano-sized microfibrillated wood fibers.
Further, as the substrate wetting agent, a substrate wetting agent suitable for an epoxy resin system, an acrylic resin system, or an alkyd resin system is used.
The film-forming assistant is a composite film-forming assistant consisting of dodecyl alcohol ester, tripropylene glycol n-butyl ether and hexanediol butyl ether acetate in a mass ratio of 3.5-4.5: 3-4. The film forming assistant has good wettability to the base material, can form continuous permeation to the base material in the film forming process, can efficiently convert rust, is an environment-friendly assistant with high boiling point, low freezing point and micro toxicity, has good intermiscibility, and cannot influence the film forming performance due to the reduction of the coating environment temperature.
Furthermore, the pigment is one or more of iron oxide red, carbon black and titanium dioxide.
(II),
A preparation method of water-based acrylic paint suitable for rusty steel structures and steel structure renovation coating comprises the following steps:
A. firstly, putting part of deionized water into a dispersion basin, dispersing at the speed of 500-700 r/min, simultaneously sequentially adding a dispersant, a polyether siloxane copolymer defoamer, sericite, modified nylon powder, precipitated barium sulfate, a pigment and a rheological aid according to the formula ratio, then adjusting the dispersion speed to 1200-1500 r/min, and dispersing for 15-30 min to obtain a dispersion mixed solution for later use;
B. B, injecting the dispersed mixed liquor obtained in the step A into a sand mill for grinding, controlling the temperature to be less than or equal to 50 ℃, and grinding the mixed liquor to be less than or equal to 35 mu m to obtain ground water slurry, and pouring the qualified ground water slurry out of the sand mill for later use;
C. and (3) putting the weakly acidic acrylic acid copolymer emulsion with the formula amount into a dispersion basin, dispersing at the speed of 500-700 r/min, simultaneously sequentially adding the grinding water slurry obtained in the step B, a base material wetting agent, a high-carbon alcohol defoaming agent, a film-forming assistant, a cosolvent and the residual amount of water, continuously dispersing for 10-15min to obtain a mixed paint with the viscosity of 68-72KU/25 ℃, then conveying to a detection spray plate and a brushing plate, and passing through a silk after the paint is qualified to obtain the water-based acrylic paint suitable for renovating and coating the rusted steel structure and the steel structure.
Further, in the step A, deionized water with the amount of 8% -12% of the formula amount is taken.
(III),
An application method of water-based acrylic paint suitable for rusty steel structures and steel structure renovation coating is directly coated on the rusty steel structure surface.
An application method of water-based acrylic paint suitable for renovating and coating a rusted steel structure and a steel structure is directly used for renovating and recoating an aged coating of the steel structure.
The paint provided by the invention is a primer-topcoat integrated paint, can perfectly convert rust, has good compatibility with different types of old paint films, and has good adhesive force after being combined with the old paint films. Compared with the prior art, the invention has the following advantages:
1. the paint adopts the weakly acidic acrylic acid copolymer emulsion, when the paint is coated on the surface of metal, the acrylic acid copolymer emulsion is directionally arranged during film forming, one end of a plurality of chelate anchoring groups on a polymer chain and rust on a base material and an old coating form a highly stable chemical coordination bond, the other end forms a film to form a typical hydrophobic barrier, the typical hydrophobic barrier is durably converted into a stable and compact high polymer hydrophobic passivation protective film, and the obtained paint has excellent rusty coating performance.
2. The polyether siloxane copolymer defoaming agent and the high-carbon alcohol defoaming agent adopted by the coating have strong defoaming and foam inhibiting capabilities and high compatibility, and have super strong elimination capability on fine bubbles generated in the coating process. The nanometer microfibrillated wood fiber rheological additive adopted in the invention can prolong the open time of the paint, so that the moisture and the cosolvent in the paint film are fully volatilized in the drying process, and the cracking of the surface of the paint film (especially under the low-temperature or high-humidity environment) caused by the release of the water and the cosolvent which are sealed in the paint film due to insufficient open time is prevented. The emulsion, various additives and pigments and fillers used in the formula are prepared into a stable system through a process, and the emulsion, various additives and pigments and fillers can continuously convert the rust in the base material through the synergistic effect of the components while ensuring the film forming quality, so that the effects of dissolving, converting and eliminating the rust are achieved, and the triple purposes of rust conversion, rust prevention and rust removal are achieved, and the rust can not return to the rust for a long time in the atmospheric environment.
3. The emulsion and the auxiliary agent adopted by the coating are high-crystallinity (70-80%), so that the coating has very stable physical and chemical properties and excellent compatibility, can be directly coated on the surface of an old coating, is suitable for directly renewing an aged steel structure of the coating and can not react with the old coating, and the formed new coating has good compatibility and strong adhesive force with the old coating, greatly improves the strength of an integral paint film, and has good protective performance for the steel structure.
4. The paint of the invention has reasonable preparation process, is the same as the production preparation process of the conventional paint, is a grinding method, and is convenient to produce.
5. The paint can be directly coated on the rusted steel structure surface, can also be directly used for renovating and recoating a steel structure aged coating, is coated on the rusted steel structure or the steel structure with the aged coating by adopting a conventional spraying method, the obtained paint film has a plump appearance, and the formed coating has excellent protective performance, weather resistance and corrosion resistance.
6. The coating has the advantages of integrated bottom and single use, and does not need to be matched with other coatings.
Detailed Description
The following examples further illustrate the invention but are not intended to limit the invention in any way.
Examples 1,
The raw material composition of the water-based acrylic primer-topcoat integrated coating (iron oxide red) suitable for rusty steel structures and steel structure renovation coating is shown in table 1.
The preparation method of this example comprises the following steps:
A. putting 10% deionized water into a dispersing basin, dispersing at the speed of 700 r/min, simultaneously sequentially adding polyether siloxane copolymer defoaming agent, sericite, modified nylon powder, precipitated barium sulfate, pigment and rheological aid, adjusting the dispersing speed to 1500 r/min, and dispersing for 20 min to obtain a dispersed mixed solution for later use;
B. b, injecting the dispersed mixed liquor obtained in the step A into a sand mill for grinding, controlling the fineness of the dispersed mixed liquor to be less than or equal to 35 mu m and the temperature to be less than or equal to 50 ℃ to obtain ground water slurry, and pouring the qualified ground water slurry out of the sand mill for later use;
C. and (2) putting the weakly acidic acrylic acid copolymer emulsion in a formula amount into a dispersion basin, dispersing at the speed of 500 r/min, simultaneously sequentially adding the grinding water slurry obtained in the step (B), a base material wetting agent, a high-carbon alcohol defoaming agent, a film-forming assistant, a cosolvent and the rest water, continuously dispersing for 15min to obtain a mixed paint vehicle, wherein the viscosity is 70 KU/25 ℃, then sending to a detection spray plate and a brushing plate, and passing through a 100-mesh silk screen after the paint vehicle is qualified to obtain the water-based acrylic paint (iron oxide red) suitable for the renovation coating of the rusted steel structure and the steel structure.
Examples 2,
The composition of the raw materials of the water-based acrylic primer-topcoat (deep-gray) paint suitable for rusty steel structures and steel structure renovation coating is shown in Table 2.
The preparation method of this example comprises the following steps:
A. putting 8% deionized water into a dispersing basin, dispersing at the speed of 500 r/min, simultaneously sequentially adding polyether siloxane copolymer defoaming agent, sericite, modified nylon powder, precipitated barium sulfate, pigment and rheological aid, adjusting the dispersing speed to 1200 r/min, and dispersing for 30 min to obtain a dispersed mixed solution for later use;
B. b, injecting the dispersed mixed liquor obtained in the step A into a sand mill for grinding, controlling the fineness of the dispersed mixed liquor to be less than or equal to 35 mu m and the temperature to be less than or equal to 50 ℃ to obtain ground water slurry, and pouring the qualified ground water slurry out of the sand mill for later use;
C. and (3) putting the weakly acidic acrylic acid copolymer emulsion with the formula amount into a dispersion basin, dispersing at the speed of 600 r/min, simultaneously sequentially adding the grinding water slurry obtained in the step B, a base material wetting agent, a high-carbon alcohol defoaming agent, a film-forming assistant, a cosolvent and the rest water, continuously dispersing for 12min to obtain a mixed paint vehicle with the viscosity of 72 KU/25 ℃, then inspecting a spray plate and a brush plate, and passing through a 100-mesh silk screen after the mixed paint vehicle is qualified to obtain the water-based acrylic paint (dark gray) suitable for renovating and coating the rusted steel structure and the steel structure.
Examples 3,
The composition of a water-based acrylic primer-topcoat (black) raw material suitable for rusty steel structures and steel structure renovation coating is shown in table 3.
The preparation method of this example comprises the following steps:
A. putting 12% of deionized water into a dispersion basin, dispersing at the speed of 600 r/min, simultaneously sequentially adding a polyether siloxane copolymer defoaming agent, sericite, modified nylon powder, precipitated barium sulfate, pigment and a rheological aid according to the formula ratio, adjusting the dispersion speed to 1400 r/min, and dispersing for 15 min to obtain a dispersion mixed solution for later use;
B. b, injecting the dispersed mixed liquor obtained in the step A into a sand mill for grinding, controlling the fineness of the dispersed mixed liquor to be less than or equal to 35 mu m and the temperature to be less than or equal to 50 ℃ to obtain ground water slurry, and pouring the qualified ground water slurry out of the sand mill for later use;
C. and (2) putting the weakly acidic acrylic acid copolymer emulsion in a formula amount into a dispersion basin, dispersing at the speed of 700 r/min, simultaneously sequentially adding the grinding water slurry obtained in the step (B), a base material wetting agent, a high-carbon alcohol defoaming agent, a film-forming assistant, a cosolvent and the rest water, continuously dispersing for 10min to obtain a mixed paint vehicle, wherein the viscosity is 68 KU/25 ℃, then sending to a detection spray plate and a brushing plate, and passing through a 100-mesh silk screen after the paint vehicle is qualified to obtain the water-based acrylic paint (black) suitable for the renovation coating of the rusted steel structure and the steel structure.
The paint properties of the products prepared in examples 1, 2 and 3 were measured as shown in Table 4.
After removing the rust and the dust from the severely rusted steel plate, measuring that the thickness of the rust layer of the base material is 40-60 μm, respectively spraying the products prepared in the embodiments 1, 2 and 3 on the rusted steel plate surface, wherein the thickness of a paint film is as follows: curing for 48 hours indoors for 60-80 microns, and performing basic performance test; the room is maintained for 14 days, and the resistance index is tested. As shown in Table 5, the "agreed" index in the performance test is not clearly required in the aqueous primer for rusty coating of HG/T5173-2017.
After removing the coating which is seriously stripped and damaged by taking the steel plate with the aged coating (a paint film is slightly stripped and the local part of the base material is rusted), respectively spraying the products prepared in the embodiment 1, the embodiment 2 and the embodiment 3 on the surface of the steel plate with the aged coating, wherein the thickness of a new paint film is 60-80 mu m, and carrying out indoor maintenance for 48 h for carrying out a basic performance test; the room is maintained for 14 days, and the resistance index is tested. The coating properties were measured as shown in table 6.
The detection results show that the coating disclosed by the invention is low in VOC content and good in storage stability, and is suitable for steel structure rusty coating and renovation and recoating of a steel structure aged coating. The paint disclosed by the invention can perfectly convert rust, has good compatibility with different types of old paint films, and has good adhesion after being combined with the old paint films. The formed coating has excellent protective performance.
The above are merely preferred examples of the present invention. It should be noted that other equivalent variations and modifications within the teachings of the present invention may occur to those skilled in the art, and should be considered within the scope of the present invention.
Claims (10)
1. The water-based acrylic primer-topcoat integrated coating suitable for rusty steel structures and steel structure renovation coating is characterized by comprising the following raw materials in parts by weight:
grinding the water slurry: 10.2-12.85 parts of water, 3-5 parts of sericite, 10-15 parts of modified nylon powder, 8-10 parts of precipitated barium sulfate, 2-8.5 parts of pigment, 0.8-1.2 parts of dispersing agent and 0.2-0.3 part of polyether siloxane copolymer defoaming agent;
rust conversion emulsion: 46-50 parts of weakly acidic acrylic acid copolymer emulsion;
auxiliary agent: 2.5-3.5 parts of rheological additive, 0.3-0.5 part of base material wetting agent, 0.1-0.2 part of high-carbon alcohol defoaming agent, 0.5-0.8 part of film-forming additive and 3-4 parts of cosolvent.
2. The water-based acrylic primer-topcoat paint suitable for rusty steel structures and steel structure renovation painting according to claim 1, which is characterized in that: the pH value of the weak acidic acrylic acid copolymer emulsion is 3-5.
3. The water-based acrylic primer-topcoat paint suitable for rusty steel structures and steel structure renovation painting according to claim 1 or 2, which is characterized in that: the rheological additive adopts nano-scale microfibrillated wood fiber.
4. The water-based acrylic primer-topcoat paint suitable for rusty steel structures and steel structure renovation painting according to claim 3, which is characterized in that: the substrate wetting agent is a substrate wetting agent suitable for an epoxy resin system, an acrylic resin system or an alkyd resin system.
5. The water-based acrylic primer-topcoat paint suitable for rusty steel structures and steel structure renovation painting according to claim 4, wherein the water-based acrylic primer-topcoat paint comprises the following components in percentage by weight: the film-forming aid is a composite film-forming aid composed of dodecyl alcohol ester, tripropylene glycol n-butyl ether and hexanediol butyl ether acetate in a mass ratio of 3.5-4.5: 3-4.
6. The water-based acrylic primer-topcoat paint suitable for rusty steel structures and steel structure renovation painting according to claim 5, wherein the water-based acrylic primer-topcoat paint comprises the following components in percentage by weight: the pigment is one or more of iron oxide red, carbon black and titanium dioxide.
7. A preparation method of the water-based acrylic paint suitable for the rusty steel structure and the steel structure renovation painting, which is characterized by comprising the following steps:
A. firstly, putting part of deionized water into a dispersion basin, dispersing at the speed of 500-700 r/min, simultaneously sequentially adding a dispersant, a polyether siloxane copolymer defoamer, sericite, modified nylon powder, precipitated barium sulfate, a pigment and a rheological aid according to the formula ratio, then adjusting the dispersion speed to 1200-1500 r/min, and dispersing for 15-30 min to obtain a dispersion mixed solution for later use;
B. B, injecting the dispersed mixed liquor obtained in the step A into a sand mill for grinding, controlling the temperature to be less than or equal to 50 ℃, and grinding the mixed liquor to be less than or equal to 35 mu m to obtain ground water slurry, and pouring the qualified ground water slurry out of the sand mill for later use;
C. and (3) putting the weakly acidic acrylic acid copolymer emulsion with the formula amount into a dispersion basin, dispersing at the speed of 500-700 r/min, simultaneously sequentially adding the grinding water slurry obtained in the step B, a base material wetting agent, a high-carbon alcohol defoaming agent, a film-forming assistant, a cosolvent and the residual amount of water, continuously dispersing for 10-15min to obtain a mixed paint with the viscosity of 68-72KU/25 ℃, then conveying to a detection spray plate and a brushing plate, and passing through a silk after the paint is qualified to obtain the water-based acrylic paint suitable for renovating and coating the rusted steel structure and the steel structure.
8. The preparation method of the water-based acrylic primer-topcoat paint suitable for the renovation and the coating of the rusted steel structure and the steel structure according to claim 7 is characterized in that: in the step A, deionized water with the formula amount of 8% -12% is taken.
9. The application method of the water-based acrylic paint suitable for the rusted steel structure and the steel structure renovation painting of any one of claims 1-6 is characterized in that: directly coated on the rusty steel structure surface.
10. The application method of the water-based acrylic paint suitable for the rusted steel structure and the steel structure renovation painting of any one of claims 1-6 is characterized in that: the method is directly used for renovating and recoating the aged coating of the steel structure.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116463014A (en) * | 2023-03-23 | 2023-07-21 | 河北晨阳工贸集团有限公司 | Water-based rust-carrying rust-transferring paint and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102807651A (en) * | 2012-08-22 | 2012-12-05 | 佛山市皇冠化工有限公司 | Method for preparing aqueous antirust polymer emulsion |
| CN105062245A (en) * | 2015-07-22 | 2015-11-18 | 国家电网公司 | Water-based rust conversion paint and preparation method thereof |
| CN106118295A (en) * | 2016-07-01 | 2016-11-16 | 洛阳双瑞防腐工程技术有限公司 | A kind of aqueous bottom surface unification Corrosion resisting paint without need of cleaning rust and preparation method thereof |
| CN107892856A (en) * | 2017-11-23 | 2018-04-10 | 江门市水星涂料科技有限公司 | A kind of water-based all-round conversion and prevention paint of rust and preparation method thereof |
-
2021
- 2021-09-28 CN CN202111145724.1A patent/CN113652131A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102807651A (en) * | 2012-08-22 | 2012-12-05 | 佛山市皇冠化工有限公司 | Method for preparing aqueous antirust polymer emulsion |
| CN105062245A (en) * | 2015-07-22 | 2015-11-18 | 国家电网公司 | Water-based rust conversion paint and preparation method thereof |
| CN106118295A (en) * | 2016-07-01 | 2016-11-16 | 洛阳双瑞防腐工程技术有限公司 | A kind of aqueous bottom surface unification Corrosion resisting paint without need of cleaning rust and preparation method thereof |
| CN107892856A (en) * | 2017-11-23 | 2018-04-10 | 江门市水星涂料科技有限公司 | A kind of water-based all-round conversion and prevention paint of rust and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116463014A (en) * | 2023-03-23 | 2023-07-21 | 河北晨阳工贸集团有限公司 | Water-based rust-carrying rust-transferring paint and preparation method thereof |
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