CN109535923A - A kind of preparation process of light and thin type anticorrosion of steel structure material - Google Patents

A kind of preparation process of light and thin type anticorrosion of steel structure material Download PDF

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Publication number
CN109535923A
CN109535923A CN201811214824.3A CN201811214824A CN109535923A CN 109535923 A CN109535923 A CN 109535923A CN 201811214824 A CN201811214824 A CN 201811214824A CN 109535923 A CN109535923 A CN 109535923A
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parts
steel
steel structure
spray
coating
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Inventor
姜志勇
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Jiangsu Huahai Steel Structure Co Ltd
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Jiangsu Huahai Steel Structure Co Ltd
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Priority to CN201811214824.3A priority Critical patent/CN109535923A/en
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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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • 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
    • 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
    • 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
    • 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
    • C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
    • C09D161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • 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
    • 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • 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
    • C09D5/10—Anti-corrosive paints containing metal dust
    • C09D5/106—Anti-corrosive paints containing metal dust containing Zn
    • 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
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • 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
    • 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
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0893—Zinc
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K3/32—Phosphorus-containing compounds
    • C08K2003/321—Phosphates
    • C08K2003/328—Phosphates of heavy metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant

Abstract

A kind of preparation process of light and thin type anticorrosion of steel structure material, its key step is as follows: using air compressor, it is ejected into the workpiece surface of steel member at a high speed to form high velocity spray beam for material spray (stone sand), thoroughly remove the rust deposite of steel structure surface, after steel structure surface derusting by sandblasting in 1.5 hours, using aerial spraying or brushing, the mode of roller coating applies low VOC non-solvent epoxy zinc rich primer uniform 4 times on steel surface, in the uncured preceding sputtered quartz sand coarse aggregate of second layer alkyd red lead anticorrosive primer, sectional repair and small area steel member are using manual smearing method construction, a kind of light and thin type anticorrosion of steel structure material and its preparation process achieve the purpose that long-effective corrosion and improve the appearance of structure, change rigidity, intensity and durability, the system has excellent, weatherability, resistance to soiling, etc. performances, it can Significant deduction and exemption steel construction later period anticorrosion maintenance work and expense.

Description

A kind of preparation process of light and thin type anticorrosion of steel structure material
Technical field
The present invention relates to a kind of light and thin type anticorrosion of steel structure material and its preparation processes, are related to steel construction building materials anti-corrosion material Preparation field.
Background technique
The existing normal steel structure part production line process procedure that rotten and corrosion protection is not handled, but at present in ordinary steel On structural member production line whens the various steel construction pieces of welding, component, component etc., since the effect of high temperature high fever can make some positions The material of metal material changes.
Metal erosion can bring huge economic loss, wherein there are 30% steel to waste due to corrosion, steel construction Necessary brushing anticorrosive paint, and steel structure anti-corrosion paint is the steel construction indispensable material that state compulsion executes.
Current most anticorrosion of steel structure ingredient is mainly water paint, but enters winter, northern almost institute in the north There is temperature in the phenomenon that subzero, water paint freezes, can not construct at all, and in south, temperature is too low, and humidity is excessive Under environment, common water borne paint cannot parch for a long time, seriously affect production efficiency and production friendship phase, and easily occur sagging, The morbid state such as shrinkage cavity, pin hole.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of light and thin type anticorrosion of steel structure The preparation process of material achievees the purpose that long-effective corrosion, changes rigidity, intensity and durability, can significantly reduce or remit the steel construction later period Anticorrosion maintenance work and expense.
To achieve the goals above, the present invention provides a kind of preparation process of light and thin type anticorrosion of steel structure material, including with Lower step:
(1) surface treatment and cleaning of steel structure surface: air compressor is used, to form high velocity spray beam for material spray (stone sand) is ejected at a high speed the workpiece surface of steel member, then carries out derusting by sandblasting, removes surface whole corrosion product and welding slag Deng sputtering object, the rust deposite of steel structure surface is thoroughly removed；
(2) anti-corrosive primer coating: after steel structure surface derusting by sandblasting in 1.5 hours, using aerial spraying or brush It applies, the mode of roller coating applies low VOC non-solvent epoxy zinc rich primer, low VOC non-solvent epoxy zinc-rich uniform 4 times on steel surface Primer dry films thickness is not less than 60 μm, first brushes one layer of alkyd red lead anticorrosive primer, 15h brushing second layer alcohol again after the completion of brushing Sour red lead anticorrosive primer, in the uncured preceding sputtered quartz sand coarse aggregate of second layer alkyd red lead anticorrosive primer, the thickness of anti-corrosive primer Degree is between 80-120 μm；
(3) it antirust surface lacquer coating: has sprayed within 1-2 hour of epoxy-mica iron oxide intermediate coat, has been sprayed using air It is coated in epoxy anticorrosion nano paint surface and sprays twice of acrylic polyurethane finish paint, per pass acrylic polyurethane finish paint thickness of dry film Not less than 60 μm, 5-6 hour of twice finishing coat spray time interval, after external coating construction, drying at room temperature 2.5-3.5 hours, It is subsequently placed in after being toasted 0.35 hour in 220-240 DEG C of baking oven and takes out；
(4) fireproof coating coating, maintenance: spraying steel member with high-pressure spray gun, and nozzle is vertical with steel member holding, and spray gun moves Dynamic direction is parallel with steel member surface, nozzle diameter 2.5-3.5mm, and away from spray-coating surface 18-20cm, spray air pressure is nozzle 15.5-17.5MPa, after spraying first pass, 36h carries out second time spraying after surface drying, guarantees that coating uniform is smooth when spraying；Its In, steel column applies the road 12-16, and thickness reaches 3.8mm, and girder steel applies the road 10-12, and thickness reaches 2.5mm, sectional repair and small area steel structure Part is using manual smearing method construction.
A kind of further preparation process of light and thin type anticorrosion of steel structure material, table after the surface treatment of the step (1) Cleannes Sa3.5 grades of face, Rz40-70 μm of roughness of surface, using 0.8-1.2MPa pressure, spray angle 45-65 Degree is sprayed away from 150-220mm, to the shot blasting on surface 15-18min of steel member.
Further, the low VOC non-solvent epoxy zinc rich primer in the step (2) is according to the following component of weight: modified tree 10-15 parts of rouge, 22-27 parts of levelling agent, 5-7 parts of hydrocarbon resin；1.5-3.5 parts of epoxy hardener, E51 epoxy resin 12.5- 16.5 parts, 23-25 parts of epoxy active diluent, 13-18 parts of zinc powder, environmentally friendly 2.5-5.5 parts of trbasic zinc phosphate, salt spray resistance auxiliary agent 14-18 Part, 23-26 parts of dispersing agent, 12-19 parts of defoaming agent.
Further, the fireproof coating in the step (4) is according to the following component of weight: 25-30 parts of aluminium oxide, flake asbestos 15-18 parts, 22-25 parts of ceramic powder, 13.5-15.5 parts of silica flatting silica, 11-14 parts of amino resins, polyurethane resin 7- 11 parts, 14.5-17.5 parts of pigments and fillers.
A kind of light and thin type anticorrosion of steel structure material of the present invention and its preparation process, achieve the purpose that long-effective corrosion, Er Qiegai Be apt to the appearance of structure, changed rigidity, intensity and durability, the system have excellent weatherability, resistance to soiling, etc. performances, The anticorrosion maintenance work of steel construction later period and expense can significantly be reduced or remitted.
Specific embodiment
The present invention is described in further details below by embodiment.
Embodiment 1
A kind of preparation process of light and thin type anticorrosion of steel structure material, comprising the following steps:
(1) surface treatment and cleaning of steel structure surface: air compressor is used, to form high velocity spray beam for material spray (stone sand) is ejected at a high speed the workpiece surface of steel member, then carries out derusting by sandblasting, removes surface whole corrosion product and welding slag Deng sputtering object, the rust deposite of steel structure surface is thoroughly removed；
(2) anti-corrosive primer coating: after steel structure surface derusting by sandblasting in 1.5 hours, using aerial spraying or brush It applies, the mode of roller coating applies low VOC non-solvent epoxy zinc rich primer, low VOC non-solvent epoxy zinc-rich uniform 4 times on steel surface Primer dry films thickness is not less than 60 μm, first brushes one layer of alkyd red lead anticorrosive primer, 15h brushing second layer alcohol again after the completion of brushing Sour red lead anticorrosive primer, in the uncured preceding sputtered quartz sand coarse aggregate of second layer alkyd red lead anticorrosive primer, the thickness of anti-corrosive primer Degree is between 80 μm；
(3) it antirust surface lacquer coating: has sprayed within 1 hour of epoxy-mica iron oxide intermediate coat, using aerial spraying Twice of acrylic polyurethane finish paint is sprayed on epoxy anticorrosion nano paint surface, per pass acrylic polyurethane finish paint thickness of dry film is not Less than 60 μm, 5 hours of twice finishing coat spray time interval drying at room temperature 2.5 hours, are subsequently placed in after external coating construction It is taken out after being toasted 0.35 hour in 220 DEG C of baking ovens；
(4) fireproof coating coating, maintenance: spraying steel member with high-pressure spray gun, and nozzle is vertical with steel member holding, and spray gun moves Dynamic direction is parallel with steel member surface, nozzle diameter 2.5mm, and for nozzle away from spray-coating surface 18cm, spraying air pressure is 15.5MPa, spray After applying first pass, 36h carries out second time spraying after surface drying, guarantees that coating uniform is smooth when spraying；Wherein, steel column applies 12, thickness Degree reaches 3.8mm, and girder steel applies 10, and thickness reaches 2.5mm, sectional repair and small area steel member using manual smearing method construction.
Sa3.5 grades of the surface treatment rear surface cleannes of the step (1), Rz40 μm of roughness of surface use 0.8MPa pressure, 45 degree of spray angle, spray are away from 150mm, to the shot blasting on surface 15min of steel member.
Low VOC non-solvent epoxy zinc rich primer in the step (2) is according to the following component of weight: 10 parts of modified resin, 22 parts of levelling agent, 5 parts of hydrocarbon resin；1.5 parts of epoxy hardener, 12.5 parts of E51 epoxy resin, 23 parts of epoxy active diluent, 13 parts of zinc powder, environmentally friendly 2.5 parts of trbasic zinc phosphate, 14 parts of salt spray resistance auxiliary agent, 23 parts of dispersing agent, 12 parts of defoaming agent.
Fireproof coating in the step (4) is according to the following component of weight: 25 parts of aluminium oxide, 15 parts of flake asbestos, ceramic powder 22 parts, 13.5 parts of silica flatting silica, 11 parts of amino resins, 7 parts of polyurethane resin, 14.5 parts of pigments and fillers.
Embodiment 2
A kind of preparation process of light and thin type anticorrosion of steel structure material, comprising the following steps:
(1) surface treatment and cleaning of steel structure surface: air compressor is used, to form high velocity spray beam for material spray (stone sand) is ejected at a high speed the workpiece surface of steel member, then carries out derusting by sandblasting, removes surface whole corrosion product and welding slag Deng sputtering object, the rust deposite of steel structure surface is thoroughly removed；
(2) anti-corrosive primer coating: after steel structure surface derusting by sandblasting in 1.5 hours, using aerial spraying or brush It applies, the mode of roller coating applies low VOC non-solvent epoxy zinc rich primer, low VOC non-solvent epoxy zinc-rich uniform 4 times on steel surface Primer dry films thickness is not less than 60 μm, first brushes one layer of alkyd red lead anticorrosive primer, 15h brushing second layer alcohol again after the completion of brushing Sour red lead anticorrosive primer, in the uncured preceding sputtered quartz sand coarse aggregate of second layer alkyd red lead anticorrosive primer, the thickness of anti-corrosive primer Degree is between 100 μm；
(3) it antirust surface lacquer coating: has sprayed within 1.5 hours of epoxy-mica iron oxide intermediate coat, has been sprayed using air It is coated in epoxy anticorrosion nano paint surface and sprays twice of acrylic polyurethane finish paint, per pass acrylic polyurethane finish paint thickness of dry film Not less than 60 μm, 5.5 hours of twice finishing coat spray time interval drying at room temperature 3 hours, then set after external coating construction It is taken out after being toasted 0.35 hour in 230 DEG C of baking ovens；
(4) fireproof coating coating, maintenance: spraying steel member with high-pressure spray gun, and nozzle is vertical with steel member holding, and spray gun moves Dynamic direction is parallel with steel member surface, nozzle diameter 3.0mm, and for nozzle away from spray-coating surface 19cm, spraying air pressure is 16.0MPa, spray After applying first pass, 36h carries out second time spraying after surface drying, guarantees that coating uniform is smooth when spraying；Wherein, steel column applies 14, thickness Degree reaches 3.8mm, and girder steel applies 11, and thickness reaches 2.5mm, sectional repair and small area steel member using manual smearing method construction.
Sa3.5 grades of the surface treatment rear surface cleannes of the step (1), Rz40-70 μm of roughness of surface use 1.0MPa pressure, 55 degree of spray angle, spray are away from 185mm, to the shot blasting on surface 16min of steel member.
Low VOC non-solvent epoxy zinc rich primer in the step (2) is according to the following component of weight: modified resin 12.5 Part, 25 parts of levelling agent, 6 parts of hydrocarbon resin；2.5 parts of epoxy hardener, 15.5 parts of E51 epoxy resin, epoxy active diluent 24 Part, 15.5 parts of zinc powder, environmentally friendly 4 parts of trbasic zinc phosphate, 16 parts of salt spray resistance auxiliary agent, 24 parts of dispersing agent, 15.5 parts of defoaming agent.
Fireproof coating in the step (4) is according to the following component of weight: 28 parts of aluminium oxide, 16.5 parts of flake asbestos, ceramics 23.5 parts of powder, 14 parts of silica flatting silica, 12.5 parts of amino resins, 14 parts of polyurethane resin, 16 parts of pigments and fillers.
Embodiment 3
A kind of preparation process of light and thin type anticorrosion of steel structure material, comprising the following steps:
(1) surface treatment and cleaning of steel structure surface: air compressor is used, to form high velocity spray beam for material spray (stone sand) is ejected at a high speed the workpiece surface of steel member, then carries out derusting by sandblasting, removes surface whole corrosion product and welding slag Deng sputtering object, the rust deposite of steel structure surface is thoroughly removed；
(2) anti-corrosive primer coating: after steel structure surface derusting by sandblasting in 1.5 hours, using aerial spraying or brush It applies, the mode of roller coating applies low VOC non-solvent epoxy zinc rich primer, low VOC non-solvent epoxy zinc-rich uniform 4 times on steel surface Primer dry films thickness is not less than 60 μm, first brushes one layer of alkyd red lead anticorrosive primer, 15h brushing second layer alcohol again after the completion of brushing Sour red lead anticorrosive primer, in the uncured preceding sputtered quartz sand coarse aggregate of second layer alkyd red lead anticorrosive primer, the thickness of anti-corrosive primer Degree is between 120 μm；
(3) it antirust surface lacquer coating: has sprayed within 2 hours of epoxy-mica iron oxide intermediate coat, using aerial spraying Twice of acrylic polyurethane finish paint is sprayed on epoxy anticorrosion nano paint surface, per pass acrylic polyurethane finish paint thickness of dry film is not Less than 60 μm, 6 hours of twice finishing coat spray time interval drying at room temperature 3.5 hours, are subsequently placed in after external coating construction It is taken out after being toasted 0.35 hour in 240 DEG C of baking ovens；
(4) fireproof coating coating, maintenance: spraying steel member with high-pressure spray gun, and nozzle is vertical with steel member holding, and spray gun moves Dynamic direction is parallel with steel member surface, nozzle diameter 3.5mm, and for nozzle away from spray-coating surface 20cm, spraying air pressure is 17.5MPa, spray After applying first pass, 36h carries out second time spraying after surface drying, guarantees that coating uniform is smooth when spraying；Wherein, steel column applies 16, thickness Degree reaches 3.8mm, and girder steel applies 12, and thickness reaches 2.5mm, sectional repair and small area steel member using manual smearing method construction.
Sa3.5 grades of the surface treatment rear surface cleannes of the step (1), Rz70 μm of roughness of surface use 1.2MPa pressure, 65 degree of spray angle, spray are away from 220mm, to the shot blasting on surface 18min of steel member.
Low VOC non-solvent epoxy zinc rich primer in the step (2) is according to the following component of weight: 15 parts of modified resin, 27 parts of levelling agent, 7 parts of hydrocarbon resin；3.5 parts of epoxy hardener, 16.5 parts of E51 epoxy resin, 25 parts of epoxy active diluent, 18 parts of zinc powder, environmentally friendly 5.5 parts of trbasic zinc phosphate, 18 parts of salt spray resistance auxiliary agent, 26 parts of dispersing agent, 19 parts of defoaming agent.
Fireproof coating in the step (4) is according to the following component of weight: 30 parts of aluminium oxide, 18 parts of flake asbestos, ceramic powder 25 parts, 15.5 parts of silica flatting silica, 14 parts of amino resins, 11 parts of polyurethane resin, 17.5 parts of pigments and fillers.
A kind of preparation process of light and thin type anticorrosion of steel structure material will to form high velocity spray beam using air compressor Material spray (stone sand) is ejected at a high speed the workpiece surface of steel member, then carries out derusting by sandblasting, remove surface whole corrosion product and Welding slag etc. sputters object, thoroughly removes the rust deposite of steel structure surface；After steel structure surface derusting by sandblasting in 1.5 hours, use Aerial spraying or the mode of brushing, roller coating apply low VOC non-solvent epoxy zinc rich primer, low VOC uniform 4 times on steel surface Non-solvent epoxy zinc rich primer thickness of dry film is not less than 60 μm, first brushes one layer of alkyd red lead anticorrosive primer, 15h after the completion of brushing Brushing second layer alkyd red lead anticorrosive primer again, in the uncured preceding thick bone of sputtered quartz sand of second layer alkyd red lead anticorrosive primer Material, the thickness of anti-corrosive primer is between 80-120 μm；Antirust surface lacquer coating: epoxy-mica iron oxide intermediate coat 1-2 has been sprayed Within a hour, twice of acrylic polyurethane finish paint, per pass third are sprayed on epoxy anticorrosion nano paint surface using aerial spraying Olefin(e) acid polyurethane finish thickness of dry film is not less than 60 μm, and 5-6 hour of twice finishing coat spray time interval, external coating is constructed Afterwards, it drying at room temperature 2.5-3.5 hours, is subsequently placed in after being toasted 0.35 hour in 220-240 DEG C of baking oven and takes out；Use high-pressure spray gun Steel member is sprayed, nozzle is vertical with steel member holding, and spray gun moving direction is parallel with steel member surface, nozzle diameter 2.5- 3.5mm, for nozzle away from spray-coating surface 18-20cm, spraying air pressure is 15.5-17.5MPa, and after spraying first pass, 36h carries out the after surface drying Two times sprayings guarantee that coating uniform is smooth when spraying；Wherein, steel column applies the road 12-16, and thickness reaches 3.8mm, and girder steel applies the road 10-12, Thickness reaches 2.5mm, sectional repair and small area steel member using manual smearing method construction.

Claims (4)

1. a kind of preparation process of light and thin type anticorrosion of steel structure material, which comprises the following steps:
(1) surface treatment and cleaning of steel structure surface: using air compressor, is sprayed with forming high velocity spray beam for material spray high speed It is mapped to the workpiece surface of steel member, then carries out derusting by sandblasting, surface whole corrosion product and welding slag etc. is removed and sputters object, thoroughly Remove the rust deposite of steel structure surface；
(2) anti-corrosive primer coating: after steel structure surface derusting by sandblasting in 1.5 hours, using aerial spraying or brushing, rolling The mode of painting applies low VOC non-solvent epoxy zinc rich primer, low VOC non-solvent epoxy zinc rich primer uniform 4 times on steel surface Thickness of dry film is greater than 60 μm, first brushes one layer of alkyd red lead anticorrosive primer, 15h brushing second layer alkyd red lead again after the completion of brushing Anti-corrosive primer, in the uncured preceding sputtered quartz sand coarse aggregate of second layer alkyd red lead anticorrosive primer, the thickness of anti-corrosive primer is in 80- Between 120 μm；
(3) it antirust surface lacquer coating: has sprayed within 1-2 hour of epoxy-mica iron oxide intermediate coat, has been existed using aerial spraying Epoxy anticorrosion nano paint surface sprays twice of acrylic polyurethane finish paint, and per pass acrylic polyurethane finish paint thickness of dry film is not small In 60 μm, 5-6 hour of twice finishing coat spray time interval, after external coating construction, drying at room temperature 2.5-3.5 hours, then It is placed in 220-240 DEG C of baking oven after toasting 0.35 hour and takes out；
(4) fireproof coating coating, maintenance: steel member is sprayed with high-pressure spray gun, nozzle is vertical with steel member holding, spray gun movement side To, nozzle diameter 2.5-3.5mm parallel with steel member surface, for nozzle away from spray-coating surface 18-20cm, spraying air pressure is 15.5- 17.5MPa, after spraying first pass, 36h carries out second time spraying after surface drying, guarantees that coating uniform is smooth when spraying；Wherein, steel column The road 12-16 is applied, thickness reaches 3.8mm, and girder steel applies the road 10-12, and thickness reaches 2.5mm, and sectional repair and small area steel member use hand The construction of work smearing method.
2. a kind of preparation process of light and thin type anticorrosion of steel structure material as described in claim 1, at the surface of the step (1) Sa3.5 grades of rear surface cleannes, Rz40-70 μm of roughness of surface are managed, using 0.8-1.2MPa pressure, spray angle 45-65 degree, spray are away from 150-220mm, to the shot blasting on surface 15-18min of steel member.
It is low in the step (2) 3. a kind of preparation process of light and thin type anticorrosion of steel structure material as described in claim 1 VOC non-solvent epoxy zinc rich primer is according to the following component of weight: 10-15 parts of modified resin, 22-27 parts of levelling agent, hydrocarbon resin 5-7 parts；1.5-3.5 parts of epoxy hardener, 12.5-16.5 parts of E51 epoxy resin, 23-25 parts of epoxy active diluent, zinc powder 13-18 parts, environmentally friendly 2.5-5.5 parts of trbasic zinc phosphate, 14-18 parts of salt spray resistance auxiliary agent, 23-26 parts of dispersing agent, 12-19 parts of defoaming agent.
Fire prevention 4. a kind of preparation process of light and thin type anticorrosion of steel structure material as described in claim 1, in the step (4) Coating is according to the following component of weight: 25-30 parts of aluminium oxide, 15-18 parts of flake asbestos, 22-25 parts of ceramic powder, silica flatting silica 13.5-15.5 parts, 11-14 parts of amino resins, 7-11 parts of polyurethane resin, 14.5-17.5 parts of pigments and fillers.
CN201811214824.3A 2018-10-18 2018-10-18 A kind of preparation process of light and thin type anticorrosion of steel structure material Pending CN109535923A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110814643A (en) * 2019-10-12 2020-02-21 上海建工（江苏）钢结构有限公司 Anticorrosion construction method for rigid beam steel structure of thermal power boiler
CN111842071A (en) * 2020-07-31 2020-10-30 陕西宇阳石油科技工程有限公司 On-site coating method for epoxy coating of steel pipeline
CN112295879A (en) * 2020-10-22 2021-02-02 苏州策尼特建材科技有限公司 Rust prevention process for steel structure and application structure thereof
WO2022111373A1 (en) * 2020-11-26 2022-06-02 Ppg Coatings (Kunshan) Co., Ltd. Zinc rich epoxy coating
CN115572519A (en) * 2022-11-04 2023-01-06 卡秀万辉(无锡)高新材料有限公司 Low-VOC (volatile organic compound) coating applied to magnesium-lithium film and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110814643A (en) * 2019-10-12 2020-02-21 上海建工（江苏）钢结构有限公司 Anticorrosion construction method for rigid beam steel structure of thermal power boiler
CN111842071A (en) * 2020-07-31 2020-10-30 陕西宇阳石油科技工程有限公司 On-site coating method for epoxy coating of steel pipeline
CN112295879A (en) * 2020-10-22 2021-02-02 苏州策尼特建材科技有限公司 Rust prevention process for steel structure and application structure thereof
WO2022111373A1 (en) * 2020-11-26 2022-06-02 Ppg Coatings (Kunshan) Co., Ltd. Zinc rich epoxy coating
CN115572519A (en) * 2022-11-04 2023-01-06 卡秀万辉(无锡)高新材料有限公司 Low-VOC (volatile organic compound) coating applied to magnesium-lithium film and preparation method thereof
CN115572519B (en) * 2022-11-04 2023-11-10 卡秀万辉(无锡)高新材料有限公司 Low-VOC (volatile organic compound) coating applied to magnesium-lithium film and preparation method thereof

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Application publication date: 20190329