CN109622332A - A kind of anticorrosion process of steel construction - Google Patents
A kind of anticorrosion process of steel construction Download PDFInfo
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- CN109622332A CN109622332A CN201811395820.XA CN201811395820A CN109622332A CN 109622332 A CN109622332 A CN 109622332A CN 201811395820 A CN201811395820 A CN 201811395820A CN 109622332 A CN109622332 A CN 109622332A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
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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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- 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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- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2451/00—Type of carrier, type of coating (Multilayers)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2502/00—Acrylic polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
- B05D2601/24—Titanium dioxide, e.g. rutile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
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- B05D2602/00—Organic fillers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Application Of Or Painting With Fluid Materials (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
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Abstract
The present invention settles sth. according to policy or law the anticorrosion process of steel construction a kind of, comprising the following steps: the surface preparation of S1, steel construction；S2, steel surface derusting；S3, steel structure aqueous corrosion resisting paint without need of cleaning rust is prepared；The preparation of S4, priming paint；The coating of S5, steel construction；S6, oil paint coating quality inspection and examination.The present invention combines epoxy emulsion with the characteristic of acrylic emulsion, improve the comprehensive performance of coating, Polyaniline emulsion is added directly into coating, solves the problems, such as the stability problem of polyaniline and compatible and preparation the anticorrosive paint of other macromolecule emulsions, the antiseptic property of coating is improved, the acid and active hydrogen in conversion fluid, polyaniline can promote the solidification of epoxy resin, the curing agent as epoxy emulsion, simple process and low cost.The anticorrosion process of steel construction is simple, not only has good antiseptic property, but also easy construction, can mitigate significantly the labor intensity of coating, while having stronger weatherability, can be realized the digital preservation for steel construction.
Description
Technical field
The invention belongs to steel structure technology fields, and in particular to a kind of anticorrosion process of steel construction.
Background technique
Anticorrosion with coat is one of important channel of anti-corrosion of metal, in order to obtain excellent anticorrosion ability, is needed to be coated
Decorations surface handled, this not only time-consuming, effort, reduce production efficiency, improve construction cost, but also rust dirt can also endanger
Human health.Nonetheless, the result of surface treatment may still can not meet coating specification.And on rust paint then just makes up
This defect, on rust paint are exactly the antirusting paint that can directly brush on the surface without derusting or simply derusted, the painting
Material construction pre-treatment is simple, reduces construction cost, has biggish practical value, on rust paint can be divided by the principle of antirust
For osmosis type, four class of transformant, stable type and functional form.Rust-converter coating contains and can chemically react with iron rust
Rust transformation can be substance that is stable or having protective effect, so that corrosion layer is become solid and can preferably be attached to by ingredient
The substance of steel surface.In the environmentally friendly spring tide that coating industry oil changes water, anticorrosive paint is to be difficult the field captured.Anti-corrosion row
Majority is all oil paint in industry, is even more the oil paint almost selected entirely, traditional oiliness anti-corrosion in heavy antisepsis field
Coating process is complicated, operating condition is severe, large labor intensity.
For this purpose, it is proposed that a kind of simple process and low cost, so that the water resistance of steel construction coating significantly improves, anti-corrosion
The anticorrosion process for the steel construction that performance improves solves the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of anticorrosion process of steel construction, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the invention provides the following technical scheme: a kind of anticorrosion process of steel construction, including following step
It is rapid:
The surface preparation of S1, steel construction: use mechanical treatment or chemically treated method, by the burr of steel surface,
Welding agent, overlap, splash, dust, loose scale and thicker rusty scale are cleaned out, using lye or organic solvent by steel
Greasy dirt, the grease of body structure surface clean up, and after caustic dip, rinse 2-3 times using with clean water, and empty with oil free compression
Gas dries up the surface of steel construction；
S2, steel surface derusting: Shot Blasting, derusting grade Sa2.5, roughness are used to the surface of steel structure member
It is 40-75 μm；
S3, it prepares steel structure aqueous corrosion resisting paint without need of cleaning rust: taking a certain amount of converting agent of iron rust and Polyaniline emulsion, addition is stirred
It mixes and 30-45min is mixed in device, stir evenly, the temperature of stirring is controlled at 50-60 DEG C, is added slowly to a certain amount of
It is stirred evenly in epoxy emulsion, acrylic acid composite emulsion and organic solvent ethyl alcohol, then is separately added into coalescing agent, stably dispersing
Agent, converting agent of iron rust, defoaming agent and thickener, temperature are controlled at 65-80 DEG C, up on rust paint after stirring 30-50min；
The preparation of S4, priming paint: sequentially added into high speed disperser water, acrylic acid elastic water-proof lotion, styrene-acrylic emulsion with
And chlorine partial emulsion, under 3000r/min mixing speed, aluminosilicate fiber cotton and hydroxyethyl ether cellulose dispersion is added in dispersion
30-50min adjusts pH=8 with ammonium hydroxide, adds anticorrosive packing, mica powder, iron oxide red and divided titanium dioxide after mixing evenly
Dissipate 40-60min, slurry coating obtained mixed with gypsum slag cement after to get fire safe type anticorrosion of steel structure priming paint；
The coating of S5, steel construction: the steel construction after spraying ball blast passed examination carries out the primer painting in step S4 and makees
Industry, primer painting operation are completed in Painting Shop, then carry out the finishing coat coating of on rust paint in step S3, by the spray of steel construction
Painting dead angle position just can be carried out large area painting operation after should being first preliminarily sprayed, and apply in primer painting, intermediate coat coating and finishing coat
In the technique of dress, when carrying out the coating process of next step, need to dry step by 2-6h before coating process；
S6, oil paint coating quality inspection and examination: after painting layer is dry, reply film thickness measures inspection and closes
Lattice, coating surface should uniformly, and color is consistent, the defects of without obvious elephant skin, trickling, blistering, crackle, component surface do not answer holiday,
It accidentally applies, coating should not peel, return rust.
Preferably, the clean water used in the step S1 is hot water, and the temperature of the hot water is 40-50 DEG C, to remove
Remove the acid, alkali and salt of steel surface.
Preferably, epoxy emulsion described in the step S3 is aqueous epoxy resins, and the Polyaniline emulsion adds for anti-corrosion
Add agent, after Polyaniline emulsion is added, the acid in the hydrogen and Polyaniline emulsion in polyaniline can promote epoxy emulsion to solidify, and take on
The curing agent of epoxy emulsion increases in addition, the wetting and permeance property of coating can be improved in the emulsifier contained in Polyaniline emulsion
The permeance property of coating not only can be improved in the adhesion of strong coating and substrate, the assistant for emulsifying agent ethyl alcohol contained in polyaniline, also
Can reduce the drying time of film, polyaniline in coating also mainly rise antisepsis, it metal surface can with passive metal,
Mask erosion environment hinders electron transmission, forms hydrophobic adsorbent layer, prevents dirt from adhering to, and it is excellent that this has polyaniline
Anti-corrosion effect.
Preferably, epoxy emulsion in the step S3, acrylic acid composite emulsion, Polyaniline emulsion, converting agent of iron rust and
The percentage composition of ethyl alcohol is respectively 35%, 25%, 1.2%, 2%, 35%.
Preferably, defoaming agent is silicon oil foam killer in the step S1, and the dispersion stabilizer is polycarboxylic acids metal salt, institute
Stating coalescing agent is at least one of alcohol ester and alcohol ether, and the thickener is polyacrylate.
Preferably, in the step S4 when steel surface coating, it should be noted that steel surface situation and atmospheric environment, coating are applied
Work must surface temperature be higher than 3 DEG C of dew-point temperature or more, relative humidity carries out in 85% condition below, when steel surface by
When rainwater influences, then it not can be carried out coating, oil paint coating place should hang temperature and humidity recorder, for detecting record spraying process
In temperature and humidity numerical value.
Preferably, acrylic acid elastic water-proof lotion, mica powder, styrene-acrylic emulsion, titanium dioxide, chlorine are partially newborn in the step S4
Liquid, iron oxide red, aluminosilicate fiber cotton, hydroxyethyl ether cellulose, anticorrosive packing, water and gypsum slag cement mass ratio be
10:10:5:5:4:5:5:5:1:50:66.
Technical effect and advantage of the invention: the anticorrosion process of the steel construction prepares steel structure aqueous corrosion resisting paint without need of cleaning rust
It is good with the crosslinking ability of steel construction, have it is nontoxic, tasteless, without organic volatile discharge, pollution-free, without firing risk, construct
Safe ready, environmentally protective advantage use aqueous epoxy resins and acrylic emulsion for the main film forming substance of coating, with poly-
Aniline lotion is anticorrosive additive, and the water resistance of the addition of polyaniline, coating significantly improves, and antiseptic property improves, which will
Epoxy emulsion combines with the characteristic of acrylic emulsion, improves the comprehensive performance of coating, and Polyaniline emulsion is added directly into
Coating solves the problems, such as the stability problem of polyaniline and compatible and preparation the anticorrosive paint of other macromolecule emulsions, improves
The antiseptic property of coating, acid and active hydrogen in conversion fluid, polyaniline can promote the solidification of epoxy resin, as epoxy cream
The curing agent of liquid, simple process and low cost.The anticorrosion process of steel construction is simple, not only has good antiseptic property, Er Qieshi
Work is easy, can mitigate significantly the labor intensity of coating, while having stronger weatherability, can be realized the length for steel construction
Phase protection, polyaniline, which is used for Corrosion resisting paint without need of cleaning rust as anticorrosive additive, both can be improved anti-corrosion effect, delay corrosion of metal
Speed, and cost can be reduced, priming paint is mixed to prepare using dispersing agent, auxiliary agent, emulsifier and gypsum slag cement, is had good
Fire resistance and antiseptic property.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
A kind of anticorrosion process of steel construction, comprising the following steps:
The surface preparation of S1, steel construction: use mechanical treatment or chemically treated method, by the burr of steel surface,
Welding agent, overlap, splash, dust, loose scale and thicker rusty scale are cleaned out, using lye or organic solvent by steel
Greasy dirt, the grease of body structure surface clean up, and after caustic dip, rinse 2-3 times using with clean water, and empty with oil free compression
Gas dries up the surface of steel construction；
S2, steel surface derusting: Shot Blasting, derusting grade Sa2.5, roughness are used to the surface of steel structure member
It is 40-75 μm；
S3, it prepares steel structure aqueous corrosion resisting paint without need of cleaning rust: taking a certain amount of converting agent of iron rust and Polyaniline emulsion, addition is stirred
It mixes and 30-45min is mixed in device, stir evenly, the temperature of stirring is controlled at 50-60 DEG C, is added slowly to a certain amount of
It is stirred evenly in epoxy emulsion, acrylic acid composite emulsion and organic solvent ethyl alcohol, then is separately added into coalescing agent, stably dispersing
Agent, converting agent of iron rust, defoaming agent and thickener, temperature are controlled at 65-80 DEG C, up on rust paint after stirring 30-50min；
The preparation of S4, priming paint: sequentially added into high speed disperser water, acrylic acid elastic water-proof lotion, styrene-acrylic emulsion with
And chlorine partial emulsion, under 3000r/min mixing speed, aluminosilicate fiber cotton and hydroxyethyl ether cellulose dispersion is added in dispersion
30-50min adjusts pH=8 with ammonium hydroxide, adds anticorrosive packing, mica powder, iron oxide red and divided titanium dioxide after mixing evenly
Dissipate 40-60min, slurry coating obtained mixed with gypsum slag cement after to get fire safe type anticorrosion of steel structure priming paint；
The coating of S5, steel construction: the steel construction after spraying ball blast passed examination carries out the primer painting in step S4 and makees
Industry, primer painting operation are completed in Painting Shop, then carry out the finishing coat coating of on rust paint in step S3, by the spray of steel construction
Painting dead angle position just can be carried out large area painting operation after should being first preliminarily sprayed, and apply in primer painting, intermediate coat coating and finishing coat
In the technique of dress, when carrying out the coating process of next step, need to dry step by 2-6h before coating process；
S6, oil paint coating quality inspection and examination: after painting layer is dry, reply film thickness measures inspection and closes
Lattice, coating surface should uniformly, and color is consistent, the defects of without obvious elephant skin, trickling, blistering, crackle, component surface do not answer holiday,
It accidentally applies, coating should not peel, return rust.
Specifically, the clean water used in the step S1 is hot water, the temperature of the hot water is 40-50 DEG C, to remove
Remove the acid, alkali and salt of steel surface.
Specifically, epoxy emulsion described in the step S3 is aqueous epoxy resins, the Polyaniline emulsion adds for anti-corrosion
Add agent, after Polyaniline emulsion is added, the acid in the hydrogen and Polyaniline emulsion in polyaniline can promote epoxy emulsion to solidify, and take on
The curing agent of epoxy emulsion increases in addition, the wetting and permeance property of coating can be improved in the emulsifier contained in Polyaniline emulsion
The permeance property of coating not only can be improved in the adhesion of strong coating and substrate, the assistant for emulsifying agent ethyl alcohol contained in polyaniline, also
Can reduce the drying time of film, polyaniline in coating also mainly rise antisepsis, it metal surface can with passive metal,
Mask erosion environment hinders electron transmission, forms hydrophobic adsorbent layer, prevents dirt from adhering to, and it is excellent that this has polyaniline
Anti-corrosion effect.
Specifically, epoxy emulsion in the step S3, acrylic acid composite emulsion, Polyaniline emulsion, converting agent of iron rust and
The percentage composition of ethyl alcohol is respectively 35%, 25%, 1.2%, 2%, 35%.
Specifically, defoaming agent is silicon oil foam killer in the step S1, the dispersion stabilizer is polycarboxylic acids metal salt, institute
Stating coalescing agent is at least one of alcohol ester and alcohol ether, and the thickener is polyacrylate.
Specifically, in the step S4 when steel surface coating, it should be noted that steel surface situation and atmospheric environment, coating are applied
Work must surface temperature be higher than 3 DEG C of dew-point temperature or more, relative humidity carries out in 85% condition below, when steel surface by
When rainwater influences, then it not can be carried out coating, oil paint coating place should hang temperature and humidity recorder, for detecting record spraying process
In temperature and humidity numerical value.
Specifically, acrylic acid elastic water-proof lotion, mica powder, styrene-acrylic emulsion, titanium dioxide, chlorine are partially newborn in the step S4
Liquid, iron oxide red, aluminosilicate fiber cotton, hydroxyethyl ether cellulose, anticorrosive packing, water and gypsum slag cement mass ratio be
10:10:5:5:4:5:5:5:1:50:66.
The anticorrosion process of the steel construction, the crosslinking ability for preparing steel structure aqueous corrosion resisting paint without need of cleaning rust and steel construction is good,
With it is nontoxic, tasteless, without organic volatile discharge, pollution-free, without risk is fired, construction safety is convenient, environmentally protective advantage,
It uses aqueous epoxy resins and acrylic emulsion for the main film forming substance of coating, using Polyaniline emulsion as anticorrosive additive, gathers
The water resistance of the addition of aniline, coating significantly improves, and antiseptic property improves, and the coating is by the spy of epoxy emulsion and acrylic emulsion
Property combine, improve the comprehensive performance of coating, Polyaniline emulsion is added directly into coating, solves polyaniline and other are high
The stability problem of the anticorrosive paint of the compatible problem and preparation of molecule lotion, improves the antiseptic property of coating.Conversion fluid gathers
Acid and active hydrogen in aniline can promote the solidification of epoxy resin, as the curing agent of epoxy emulsion, simple process, cost
Low, the anticorrosion process of steel construction is simple, not only has good antiseptic property, but also easy construction, can mitigate coating significantly
Labor intensity, while there is stronger weatherability, can be realized the digital preservation for steel construction, using polyaniline as anti-corrosion
Anti-corrosion effect both can be improved for Corrosion resisting paint without need of cleaning rust in additive, delays corrosion of metal speed, and can reduce cost, priming paint is adopted
It is mixed to prepare with dispersing agent, auxiliary agent, emulsifier and gypsum slag cement, there is good fire resistance and antiseptic property.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (7)
1. a kind of anticorrosion process of steel construction, which comprises the following steps:
The surface preparation of S1, steel construction: use mechanical treatment or chemically treated method, by the burr of steel surface, welding agent,
Overlap, splash, dust, loose scale and thicker rusty scale are cleaned out, using lye or organic solvent by steel construction
Greasy dirt, the grease on surface clean up, and after caustic dip, rinse 2-3 times using with clean water, and will with oil-free compressed air
The surface of steel construction dries up；
S2, steel surface derusting: Shot Blasting, derusting grade Sa2.5 are used to the surface of steel structure member, roughness is
40-75μm；
S3, it prepares steel structure aqueous corrosion resisting paint without need of cleaning rust: taking a certain amount of converting agent of iron rust and Polyaniline emulsion, blender is added
Middle mixing 30-45min, stirs evenly, and the temperature of stirring is controlled at 50-60 DEG C, is added slowly to a certain amount of epoxy
Stirred evenly in lotion, acrylic acid composite emulsion and organic solvent ethyl alcohol, then be separately added into coalescing agent, dispersion stabilizer,
Converting agent of iron rust, defoaming agent and thickener, temperature are controlled at 65-80 DEG C, up on rust paint after stirring 30-50min；
The preparation of S4, priming paint: water, acrylic acid elastic water-proof lotion, styrene-acrylic emulsion and chlorine are sequentially added into high speed disperser
Meta-latex emulsion, under 3000r/min mixing speed, aluminosilicate fiber cotton is added in dispersion and hydroxyethyl ether cellulose disperses 30-
50min adjusts pH=8 with ammonium hydroxide after mixing evenly, adds anticorrosive packing, mica powder, iron oxide red and titanium dioxide dispersion
40-60min, slurry coating obtained mixed with gypsum slag cement after to get fire safe type anticorrosion of steel structure priming paint；
The coating of S5, steel construction: the steel construction after spraying ball blast passed examination carries out the primer painting operation in step S4, bottom
Paint painting operation is completed in Painting Shop, then carries out the finishing coat coating of on rust paint in step S3, and the spraying of steel construction is dead
Angular position just can be carried out large area painting operation after should being first preliminarily sprayed, in primer painting, intermediate coat coating and finishing coat coating
In technique, when carrying out the coating process of next step, need to dry step by 2-6h before coating process；
S6, oil paint coating quality inspection and examination: after painting layer is dry, reply film thickness, which measures, examines qualified, painting
Layer surface should uniformly, and color is consistent, and the defects of without obvious elephant skin, trickling, blistering, crackle, component surface is not answered holiday, accidentally applied,
Coating should not peel, return rust.
2. a kind of anticorrosion process of steel construction according to claim 1, it is characterised in that: used in the step S1 clean
Water purification is hot water, and the temperature of the hot water is 40-50 DEG C, to remove the acid, alkali and salt of steel surface.
3. a kind of anticorrosion process of steel construction according to claim 1, it is characterised in that: epoxy described in the step S3
Lotion is aqueous epoxy resins, and the Polyaniline emulsion is anticorrosive additive, after Polyaniline emulsion is added, hydrogen in polyaniline and
Acid in Polyaniline emulsion can promote epoxy emulsion to solidify, and take on the curing agent of epoxy emulsion, in addition, containing in Polyaniline emulsion
The wetting and permeance property of coating can be improved in some emulsifiers, enhances the adhesion of coating and substrate, contains in polyaniline
The permeance property of coating not only can be improved in assistant for emulsifying agent ethyl alcohol, can also reduce the drying time of film, polyaniline is in coating
Antisepsis is also mainly played, it can be hydrophobic with passive metal, mask erosion environment, obstruction electron transmission, formation in metal surface
Adsorption layer prevents dirt from adhering to, this makes polyaniline have excellent anti-corrosion effect.
4. a kind of anticorrosion process of steel construction according to claim 1, it is characterised in that: epoxy cream in the step S3
Liquid, acrylic acid composite emulsion, Polyaniline emulsion, converting agent of iron rust and ethyl alcohol percentage composition be respectively 35%, 25%,
1.2%, 2%, 35%.
5. a kind of anticorrosion process of steel construction according to claim 1, it is characterised in that: defoaming agent is in the step S3
Silicon oil foam killer, the dispersion stabilizer be polycarboxylic acids metal salt, the coalescing agent be at least one of alcohol ester and alcohol ether,
The thickener is polyacrylate.
6. a kind of anticorrosion process of steel construction according to claim 1, it is characterised in that: steel surface in the step S5
When coating, it should be noted that steel surface situation and atmospheric environment, coating decoration must be higher than 3 DEG C of dew-point temperature or more in surface temperature,
Relative humidity carries out in 85% condition below, when steel surface is influenced by rainwater, then not can be carried out coating, oil paint coating
Place should hang temperature and humidity recorder, for detecting the temperature and humidity numerical value in record spraying process.
7. a kind of anticorrosion process of steel construction according to claim 1, it is characterised in that: acrylic acid bullet in the step S4
Property water-proof emulsion, mica powder, styrene-acrylic emulsion, titanium dioxide, chlorine partial emulsion, iron oxide red, aluminosilicate fiber cotton, hydroxyethyl cellulose
Ether, anticorrosive packing, water and gypsum slag cement mass ratio be 10:10:5:5:4:5:5:5:1:50:66.
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