CN113337148A - Environment-friendly water-based anticorrosive coating for autoclaved aerated concrete slab steel bars - Google Patents
Environment-friendly water-based anticorrosive coating for autoclaved aerated concrete slab steel bars Download PDFInfo
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- CN113337148A CN113337148A CN202110640653.6A CN202110640653A CN113337148A CN 113337148 A CN113337148 A CN 113337148A CN 202110640653 A CN202110640653 A CN 202110640653A CN 113337148 A CN113337148 A CN 113337148A
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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
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Abstract
The invention discloses an environment-friendly water-based anticorrosive coating for autoclaved aerated concrete slab reinforcing steel bars, which belongs to the field of anticorrosive coatings, and comprises a water-based anticorrosive coating, wherein the water-based anticorrosive coating comprises the following components in parts by weight: water-soluble resin, glass powder, clay, borax, fiber, fluorite, adhesive and electrolyte. The using method comprises the following steps: firstly, removing an oxide film on the surface of the steel bar; carrying out sand blasting treatment on the surface of the steel bar, then coating fiber paper on the steel bar, and carrying out preheating treatment on the steel bar; carrying out electrostatic spraying on the reinforcing steel bars, and spraying the two groups of spray paints around the core of the reinforcing steel bars relatively; the steel bar is subjected to heating and curing treatment, so that after an oxide film is formed on the surface of the steel bar, the anticorrosion coating and the oxide film are connected with the steel bar main body through microfiber wires, and when the steel bar is scratched by foreign objects, the anticorrosion coating and the oxide film are not easy to fall off, and the corrosion resistance of the steel bar is effectively improved.
Description
Technical Field
The invention relates to the field of anticorrosive coatings, in particular to an environment-friendly water-based anticorrosive coating for autoclaved aerated concrete slab steel bars.
Background
The autoclaved aerated concrete slab is a novel light porous green environment-friendly building material which takes cement, lime, silica sand and the like as main raw materials and is added with different quantities of steel bar meshes subjected to corrosion protection treatment according to the structural requirements. The autoclaved aerated concrete slab with porous crystals is produced through high-temperature high-pressure steam curing and reaction, has lower density than common cement materials, and has excellent performance of fire resistance, fire prevention, sound insulation, heat preservation and the like which are unparalleled.
A plurality of micro air holes with the diameter of 1-3mm exist in the aerated concrete slab, the hole solution is alkaline, steel bars are easy to corrode in the autoclaved curing and using processes, the volume of the corroded steel bars is about 2-6 times of that of the steel bars before corrosion, the aerated concrete slab can crack due to volume expansion, and the aerated concrete protective layer can fall off in severe cases. The protective action on the steel bars is further degraded after the aerated concrete slab cracks, and a corrosive medium is easier to contact the steel bars, so that the corrosion is further aggravated, the structural damage of the aerated concrete slab is accelerated, and the structural durability is reduced.
At present, most of anticorrosive coatings applied to reinforcing steel bars are epoxy resin coatings, zinc-plated coatings and water-based inorganic zinc-rich coatings. Most of the coatings have lower hardness, are easy to fall off and damage due to scratch by foreign objects, and can not effectively protect the reinforcing steel bars from corrosion.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide the environment-friendly water-based anticorrosive coating for the autoclaved aerated concrete slab steel bar, which can realize that the microfiber wires penetrate between the oxide film and the steel bar after the oxide film is formed on the surface of the steel bar, and the microfiber wires exposed on the oxide film are bonded with the anticorrosive coating after the anticorrosive coating generated by the oxide layer is formed, so that the anticorrosive coating, the oxide film and the steel bar main body are connected through the microfiber wires, when the steel bar is cut and rubbed by foreign objects, the anticorrosive coating and the oxide film are bound through the microfiber wires, the anticorrosive coating and the oxide film are not easy to fall off, and the corrosion resistance of the steel bar is effectively improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The environment-friendly water-based anticorrosive coating for the autoclaved aerated concrete slab steel bars comprises a water-based anticorrosive coating, and the water-based anticorrosive coating comprises the following components in parts by weight: 30-45 parts of water-soluble resin, 20-30 parts of glass powder, 2-8 parts of clay, 25-50 parts of borax, 0.5-3 parts of fiber, 5-15 parts of fluorite, 1-10 parts of adhesion agent and 0.25-2.8 parts of electrolyte;
the use method of the environment-friendly water-based anticorrosive paint for the autoclaved aerated concrete slab steel bars comprises the following steps:
s1, firstly, removing the oxide film on the surface of the steel bar;
s2, performing sand blasting treatment on the surface of the steel bar;
s3, coating fiber paper on the steel bars, and preheating the steel bars;
s4, performing electrostatic spraying on the steel bars obtained in the step S2 by using an aqueous preservative coating solution, and spraying two groups of spray paints around the core of the steel bars relatively;
and S5, after the fiber paper sprayed on the surface of the steel bar is dissolved, heating and curing the steel bar obtained in the step S3 to cure the coating on the surface of the steel bar, and then washing the surface of the steel bar.
Further, the oxide film removal operation in the step S1 is: soaking the steel bar in 10% alkali solution according to the corrosion specification, and corroding the steel bar at the temperature of 50-70 ℃ for l-2 min to remove the oxide film on the steel bar.
According to the scheme, after the oxide film is formed on the surface of the steel bar, the microfiber threads penetrate between the oxide film and the steel bar, and after the anti-corrosion coating generated by the oxide layer is formed, the microfiber threads exposed on the oxide film are bonded with the anti-corrosion coating, so that the anti-corrosion coating, the oxide film and the steel bar main body are connected through the microfiber threads, when the steel bar is cut by foreign objects, the anti-corrosion coating and the oxide film are bound through the microfiber threads, the anti-corrosion coating and the oxide film are not prone to falling off, and the anti-corrosion performance of the steel bar is effectively improved.
Further, the fiber paper in the step S3 includes a pair of water-soluble fiber papers bonded and compounded, a plurality of microfiber threads are uniformly distributed between the pair of water-soluble fiber papers, the microfiber threads are made of high-strength ultrafine fibers, the length of each section of microfiber thread is 5-10cm, the microfiber threads are gradually attached to the surface of the steel bar by dissolving the fiber paper coated on the surface of the steel bar, so that the formed oxide film can be bound and connected by the microfiber threads, and the oxide film is rubbed by foreign objects to be difficult to fall off.
Further, the sand blasting treatment in the step S2 is performed to treat the cleanliness of the surface of the steel bar to be above the level of sa2.5, the surface roughness reaches Rz40-100um, the sand blasting treatment is performed to clean the surface of the steel bar, and the surface of the steel bar is treated to be rough, so that the micro fiber wires can be firmly embedded into the surface of the steel bar.
Further, the aqueous antiseptic coating solution comprises an aqueous antiseptic coating, deionized water and an oxidant accelerator, wherein the ratio of the aqueous antiseptic coating to the deionized water to the oxidant accelerator is 5: 4:1, and adding an oxidant accelerator into the aqueous preservative coating solution to enable an oxide film on the surface of the steel bar to be rapidly formed.
Further, aluminum powder coating is mixed between the water-soluble fiber papers, and the density of the aluminum powder coating on the fiber papers is 0.5g/cm3When the aluminum powder coating is oxidized, an oxide film can be quickly formed on the surface of the steel bar, and the microfiber threads are embedded in the oxide film.
Further, the water-soluble resin is alkalescent resin, the water-based anticorrosive paint is doped with film-forming additive particles, and the film-forming additive particles are coatedIs coated with a pyrolytic film, the grain diameter of the film forming additive particles is 2-3mm, and the density of the film forming additive particles in the water-based anticorrosive paint is 2.5mg/m3When the water-based anticorrosive paint is sprayed on the preheated steel bar, a pyrolytic film on the film-forming auxiliary agent particles is decomposed, the film-forming auxiliary agent reacts with water-soluble resin in the water-based anticorrosive paint, and the water-based anticorrosive paint is assisted to form a film.
Further, in the step S3, the fiber paper is coated on the steel bar for 1-2 circles, the thickness of the fiber paper on the steel bar is 0.5-3mm, the fiber paper is coated on the steel bar and is not easy to be too thick, and the fiber paper is prevented from being slowly decomposed after being soaked in water.
Furthermore, the fibers in the water-based anticorrosive paint are carbon fibers, and the carbon fibers are subjected to activation treatment, so that the carbon fibers have a dense porous structure.
Further, the glass powder and the clay are respectively sieved by a sieve with 300-500 meshes; the weight ratio of the glass powder to the fiber is (15-60): 1.
3. advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) when the anticorrosion coating is coated on the surface of the steel bar, firstly removing an oxide film on the surface of the steel bar, then carrying out sand blasting treatment to clean and rough the surface of the steel bar, coating fiber paper, then carrying out electrostatic spraying and coating process, hydrolyzing the fiber paper, so that microfiber threads in the fiber paper are solidified on the surface of the steel bar, in the hydrolysis process of the fiber paper, aluminum powder coating mixed in the fiber paper is embedded into the microfiber threads and is fused into the oxide film which is formed on the surface of the steel bar under the heating condition, so that the microfiber threads are embedded into the oxide film on the surface of the steel bar, the surface of the steel bar is rough, the microfiber threads are embedded into concave points on the surface of the steel bar in sections in the spraying process, after the oxide film is formed on the surface of the steel bar, the microfiber threads penetrate between the oxide film and the steel bar, after the anticorrosion coating which is formed by the oxide layer is adhered to the anticorrosion coating, so that the anticorrosion coating is realized, The oxidation film is connected with the steel bar main body through the microfiber wires, when the steel bar is scratched by foreign objects, the corrosion-resistant coating and the oxidation film are bound through the microfiber wires, so that the corrosion-resistant coating and the oxidation film are not easy to fall off, and the corrosion resistance of the steel bar is effectively improved.
(2) The fiber paper in the step S3 comprises a pair of water-soluble fiber papers which are bonded and compounded, a plurality of microfiber threads are uniformly distributed between the pair of water-soluble fiber papers, the microfiber threads are made of high-strength ultrafine fibers, the length of each section of microfiber thread is 5-10cm, the microfiber threads are gradually attached to the surface of the steel bar by dissolving the fiber paper coated on the surface of the steel bar, so that the formed oxide film can be bound and connected by the microfiber threads, and the oxide film is cut and rubbed by foreign objects to be difficult to fall off.
(3) And D, performing sand blasting treatment in the step S2 to ensure that the cleanliness of the surface of the steel bar is treated to be more than Sa2.5 grade, the surface roughness reaches Rz40-100um, the surface of the steel bar is cleaned through sand blasting treatment, and the surface of the steel bar is treated to be rough, so that the microfiber threads can be firmly embedded into the surface of the steel bar.
(4) The aqueous antiseptic coating solution comprises an aqueous antiseptic coating, deionized water and an oxidant accelerant, wherein the proportion of the aqueous antiseptic coating to the deionized water to the oxidant accelerant is 5: 4:1, and adding an oxidant accelerator into the aqueous preservative coating solution to enable an oxide film on the surface of the steel bar to be rapidly formed.
(5) The aluminum powder coating is mixed between the water-soluble fiber papers, and the density of the aluminum powder coating on the fiber papers is 0.5g/cm3When the aluminum powder coating is oxidized, an oxide film can be quickly formed on the surface of the steel bar, and the microfiber threads are embedded in the oxide film.
(6) The water-soluble resin is alkalescent resin, the water-based anticorrosive paint is doped with film-forming aid particles, the film-forming aid particles are coated with pyrolytic films, the particle size of the film-forming aid particles is 2-3mm, and the density of the film-forming aid particles in the water-based anticorrosive paint is 2.5mg/m3When the water-based anticorrosive paint is sprayed on the preheated steel bar, a pyrolytic film on the film-forming auxiliary agent particles is decomposed, the film-forming auxiliary agent reacts with water-soluble resin in the water-based anticorrosive paint, and the water-based anticorrosive paint is assisted to form a film.
Drawings
FIG. 1 is a schematic perspective view of the fiber paper coated with the steel bar of the present invention;
FIG. 2 is a cross-sectional view of the steel bar coated with fiber paper according to the present invention;
FIG. 3 is a partial cross-sectional view of the fiber paper after the fiber paper is wrapped on the steel bar of the present invention;
FIG. 4 is an enlarged view of a portion of the rebar of the present invention after dissolution of the fiber paper;
FIG. 5 is an enlarged view of a portion of the reinforcing bar according to the present invention showing an oxide film formed thereon;
FIG. 6 is an enlarged view of a portion of the reinforcing bar of the present invention during the formation of the corrosion-resistant coating thereon;
FIG. 7 is a burst diagram of a fibrous paper of the present invention;
FIG. 8 is a top view of the dissolution of the fiber paper on the rebar of the present invention;
FIG. 9 is a schematic view of the structure at A in FIG. 8;
FIG. 10 is a flow chart of the anticorrosive paint of the present invention in use.
The reference numbers in the figures illustrate:
reinforcing steel bar 1, fiber paper 2 and microfiber thread 3.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection can be direct connection or indirect connection through an intermediate medium, and can be communication inside the model adapting element. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
the environment-friendly water-based anticorrosive coating for the autoclaved aerated concrete slab steel bars comprises a water-based anticorrosive coating, and the water-based anticorrosive coating comprises the following components in parts by weight: 30-45 parts of water-soluble resin, 20-30 parts of glass powder, 2-8 parts of clay, 25-50 parts of borax, 0.5-3 parts of fiber, 5-15 parts of fluorite, 1-10 parts of adhesive and 0.25-2.8 parts of electrolyte, wherein the glass powder and the clay are respectively sieved by a 300-mesh sieve with 500 meshes; the weight ratio of the glass powder to the fiber is (15-60): and 1, the fibers in the water-based anticorrosive paint are carbon fibers, and the carbon fibers are subjected to activation treatment to enable the carbon fibers to have a dense porous structure.
Referring to fig. 1 to 10, the use method of the environment-friendly water-based anticorrosive coating for the steel bars of the autoclaved aerated concrete slab comprises the following steps:
s1, firstly, removing the oxide film on the surface of the steel bar 1, and specifically: soaking the steel bar 1 in 10% alkali solution according to the corrosion specification, and corroding at the temperature of 50-70 ℃ for l-2 min to remove an oxide film on the steel bar 1;
s2, performing sand blasting treatment on the surface of the steel bar 1, wherein the sand blasting treatment is used for treating the cleanliness of the surface of the steel bar 1 to be more than Sa2.5 grade, the surface roughness reaches Rz40-100um, the sand blasting treatment is used for cleaning the surface of the steel bar 1, and the surface of the steel bar 1 is treated to be rough, so that the microfiber threads 3 can be firmly embedded into the surface of the steel bar 1;
s3, referring to fig. 1, a steel bar 1 is coated with a fiber paper 2, the fiber paper 2 includes a pair of bonded and compounded water-soluble fiber papers, a plurality of microfiber threads 3 are uniformly distributed between the pair of water-soluble fiber papers, the microfiber threads 3 are made of high-strength ultrafine fibers, the length of each section of microfiber thread 3 is 5-10cm, the microfiber threads 3 are gradually attached to the surface of the steel bar 1 by dissolving the fiber paper 2 coated on the surface of the steel bar 1, so that the formed oxide film can be bound and connected by the microfiber threads, the oxide film is cut and rubbed by foreign objects to be difficult to fall off, the fiber paper 2 is coated on the steel bar 1 for 1-2 circles, the thickness of the fiber paper 2 on the steel bar 1 is 0.5-3mm, the fiber paper 2 is not easy to be too thick on the steel bar 1, the fiber paper 2 is prevented from being slowly decomposed after being soaked in water, the steel bar 1 is preheated, the steel bar is heated to, and keeping the temperature for 10-20 min;
s4, carrying out electrostatic spraying on the steel bar 1 obtained in the step S2 by using an aqueous preservative coating solution, and spraying two groups of spray paints around the core of the steel bar 1 relatively;
s5, referring to fig. 5 and 8, after the fiber paper 2 sprayed on the surface of the steel bar 1 is dissolved, the steel bar 1 obtained in the step S3 is heated and cured to cure the coating on the surface of the steel bar 1, during the heating and curing process, the aluminum powder paint attached to the micro fiber wires 3 on the surface of the steel bar 1 and the oxidation promoting reaction in the aqueous antiseptic paint solution accelerate the formation of the oxide film on the surface of the steel bar 1, and simultaneously the aqueous antiseptic paint in the aqueous antiseptic paint solution is also heated and cured to gradually form the oxide film and the antiseptic coating on the surface of the steel bar 1, and the surface of the steel bar 1 is washed.
The aqueous antiseptic coating solution comprises an aqueous antiseptic coating, deionized water and an oxidant accelerant, wherein the proportion of the aqueous antiseptic coating to the deionized water to the oxidant accelerant is 5: 4:1, and adding an oxidant accelerator into the aqueous preservative coating solution to enable an oxide film on the surface of the steel bar 1 to be rapidly formed. The aluminum powder coating is mixed between the water-soluble fiber papers, and the density of the aluminum powder coating on the fiber papers is 0.5g/cm3The density of the aluminum powder coating is kept low, so that the aluminum powder coating with proper density is prevented from being damaged by a large amount of heat released after being contacted with water when excessive aluminum powder exists, a person skilled in the art uses the aluminum powder coating with proper density according to the size of the steel bar 1, the aluminum powder coating is combined with the microfiber threads 3 in the decomposition process of the fiber paper 2 and is assisted on the surface of the steel bar 1, when the aluminum powder coating is oxidized, an oxide film can be quickly formed on the surface of the steel bar 1, and the microfiber threads are embedded in the oxide film. Water-soluble resinIs weakly alkaline resin, the aqueous anticorrosive paint is doped with film forming additive particles, the film forming additive particles are coated with a pyrolytic film, the particle size of the film forming additive particles is 2-3mm, and the density of the film forming additive particles in the aqueous anticorrosive paint is 2.5mg/m3When the water-based anticorrosive paint is sprayed on the preheated steel bar 1, a pyrolytic film on the film-forming auxiliary agent particles is decomposed, the film-forming auxiliary agent reacts with water-soluble resin in the water-based anticorrosive paint, and the water-based anticorrosive paint is assisted to form a film.
When the surface of the steel bar 1 is coated with the anticorrosive coating, firstly removing the oxide film on the surface of the steel bar, then carrying out sand blasting treatment to clean and roughen the surface of the steel bar, coating the fiber paper 2, then carrying out electrostatic spraying and spraying, hydrolyzing the fiber paper 2 to solidify the microfiber wires 3 in the fiber paper 2 on the surface of the steel bar 1, embedding the aluminum powder coating mixed in the fiber paper 2 into the microfiber wires 3 in the hydrolysis process of the fiber paper 2, and fusing the oxide film which is formed on the surface of the steel bar 1 under the heating condition to realize that the microfiber wires 3 are embedded into the oxide film on the surface of the steel bar 1, wherein the surface of the steel bar 1 is rough, the microfiber wires 3 are embedded into concave points on the surface of the steel bar 1 in sections in the spraying process, after the oxide film is formed on the surface of the steel bar 1, the microfiber wires 3 penetrate between the oxide film and the steel bar 1, and after the anticorrosive coating which is formed by the oxide layer, the microfiber wires 3 on the oxide film are exposed to be adhered with the anticorrosive coating, the anti-corrosion coating and the oxidation film are connected with the main body of the steel bar 1 through the microfiber wires 3, and when the steel bar is scratched by foreign objects, the anti-corrosion coating and the oxidation film are bound through the microfiber wires, so that the anti-corrosion coating and the oxidation film are not easy to fall off, and the anti-corrosion performance of the steel bar is effectively improved.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (10)
1. The environment-friendly water-based anticorrosive paint for the autoclaved aerated concrete slab steel bars comprises a water-based anticorrosive paint, and is characterized in that: the raw materials of the water-based anticorrosive paint comprise the following components: 30-45 parts of water-soluble resin, 20-30 parts of glass powder, 2-8 parts of clay, 25-50 parts of borax, 0.5-3 parts of fiber, 5-15 parts of fluorite, 1-10 parts of adhesion agent and 0.25-2.8 parts of electrolyte;
the use method of the environment-friendly water-based anticorrosive paint for the autoclaved aerated concrete slab steel bars comprises the following steps:
s1, firstly, removing the oxide film on the surface of the steel bar (1);
s2, performing sand blasting treatment on the surface of the steel bar (1);
s3, coating the fiber paper (2) on the steel bar (1), and preheating the steel bar (1);
s4, carrying out electrostatic spraying on the steel bar (1) obtained in the step S2 by using an aqueous preservative coating solution, and spraying two groups of spray paints around the core of the steel bar (1) relatively;
s5, after the fiber paper (2) sprayed on the surface of the steel bar (1) is dissolved, heating and curing the steel bar (1) obtained in the step S3 to cure the coating on the surface of the steel bar (1), and then washing the surface of the steel bar (1).
2. The environment-friendly water-based anticorrosive paint for the steel bars of autoclaved aerated concrete slabs as claimed in claim 1, wherein: the oxide film removal operation in the step S1 is: soaking the steel bar (1) in 10% alkali solution according to the corrosion specification, and corroding at the temperature of 50-70 ℃ for l-2 min to remove the oxide film on the steel bar (1).
3. The environment-friendly water-based anticorrosive paint for the steel bars of autoclaved aerated concrete slabs as claimed in claim 1, wherein: the fiber paper (2) in the step S3 comprises a pair of bonded and compounded water-soluble fiber papers, a plurality of microfiber threads (3) are uniformly distributed between the water-soluble fiber papers, the microfiber threads (3) are made of high-strength superfine fibers, and the length of each section of microfiber thread (3) is 5-10 cm.
4. The environment-friendly water-based anticorrosive paint for the steel bars of autoclaved aerated concrete slabs as claimed in claim 1, wherein: and the sand blasting treatment in the step S2 enables the surface cleanliness of the steel bar (1) to reach more than Sa2.5 grade and the surface roughness to reach Rz25-100 um.
5. The environment-friendly water-based anticorrosive paint for the steel bars of autoclaved aerated concrete slabs as claimed in claim 1, wherein: the water-based preservative coating solution comprises a water-based preservative coating, deionized water and an oxidant accelerant, wherein the ratio of the water-based preservative coating to the deionized water to the oxidant accelerant is 5: 4:1.
6. The environment-friendly water-based anticorrosive paint for the steel bars of autoclaved aerated concrete slabs as claimed in claim 1, wherein: the aluminum powder coating is mixed between the water-soluble fiber papers, and the density of the aluminum powder coating on the fiber papers is 0.5g/cm3。
7. The environment-friendly water-based anticorrosive paint for the steel bars of autoclaved aerated concrete slabs as claimed in claim 1, wherein: the water-soluble resin is weakly alkaline resin, the water-based anticorrosive paint is doped with film-forming aid particles, the film-forming aid particles are coated with pyrolytic films, the particle size of the film-forming aid particles is 2-3mm, and the density of the film-forming aid particles in the water-based anticorrosive paint is 2.5mg/m3。
8. The environment-friendly water-based anticorrosive paint for the steel bars of autoclaved aerated concrete slabs as claimed in claim 1, wherein: and in the step S3, the fiber paper (2) is coated on the steel bar (1) for 1-2 circles, and the thickness of the fiber paper (2) on the steel bar (1) is 0.5-3 mm.
9. The environment-friendly water-based anticorrosive paint for the steel bars of autoclaved aerated concrete slabs as claimed in claim 1, wherein: the fiber in the water-based anticorrosive paint is carbon fiber, and the carbon fiber is subjected to activation treatment, so that the carbon fiber has a dense porous structure.
10. The environment-friendly water-based anticorrosive paint for the steel bars of autoclaved aerated concrete slabs as claimed in claim 1, wherein: the glass powder and the clay are respectively sieved by a sieve with 300-500 meshes; the weight ratio of the glass powder to the fiber is (15-60): 1.
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| CN202110640653.6A CN113337148A (en) | 2021-06-09 | 2021-06-09 | Environment-friendly water-based anticorrosive coating for autoclaved aerated concrete slab steel bars |
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| CN202110640653.6A CN113337148A (en) | 2021-06-09 | 2021-06-09 | Environment-friendly water-based anticorrosive coating for autoclaved aerated concrete slab steel bars |
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