CN115007424A - Control method for improving sealing capacity of color coating - Google Patents
Control method for improving sealing capacity of color coating Download PDFInfo
- Publication number
- CN115007424A CN115007424A CN202210580793.3A CN202210580793A CN115007424A CN 115007424 A CN115007424 A CN 115007424A CN 202210580793 A CN202210580793 A CN 202210580793A CN 115007424 A CN115007424 A CN 115007424A
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- coating
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- strip steel
- repairing
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000009500 colour coating Methods 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 title claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 101
- 239000011248 coating agent Substances 0.000 claims abstract description 78
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 77
- 239000010959 steel Substances 0.000 claims abstract description 77
- 239000012943 hotmelt Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 39
- 239000002086 nanomaterial Substances 0.000 claims abstract description 37
- 239000002245 particle Substances 0.000 claims abstract description 32
- 239000004033 plastic Substances 0.000 claims abstract description 30
- 239000003973 paint Substances 0.000 claims abstract description 24
- 238000009826 distribution Methods 0.000 claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 239000008199 coating composition Substances 0.000 claims abstract description 7
- 238000005054 agglomeration Methods 0.000 claims abstract description 6
- 230000002776 aggregation Effects 0.000 claims abstract description 6
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims description 30
- -1 bisphenol compound Chemical class 0.000 claims description 24
- 239000000049 pigment Substances 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 238000004070 electrodeposition Methods 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 13
- 229920000858 Cyclodextrin Polymers 0.000 claims description 12
- 239000004593 Epoxy Substances 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 12
- 239000002121 nanofiber Substances 0.000 claims description 12
- 229920005862 polyol Polymers 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 claims description 12
- 229920001169 thermoplastic Polymers 0.000 claims description 12
- 229930185605 Bisphenol Natural products 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000007747 plating Methods 0.000 claims description 10
- 239000011817 metal compound particle Substances 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005238 degreasing Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 241000501667 Etroplus Species 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 230000001680 brushing effect Effects 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 238000003618 dip coating Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000005246 galvanizing Methods 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000005002 finish coating Substances 0.000 claims description 3
- 238000007788 roughening Methods 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims 1
- 239000002105 nanoparticle Substances 0.000 abstract description 5
- 239000000126 substance Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 238000006555 catalytic reaction Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
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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
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
- B05D3/0236—Pretreatment, e.g. heating the substrate with ovens
-
- 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
-
- 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
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
- C23C22/84—Dyeing
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/04—Electroplating: Baths therefor from solutions of chromium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
- C25D7/0614—Strips or foils
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a control method for improving sealing capacity of a color coating, which comprises the following steps: coating nanoscale treatment and self-repairing material addition: when the coating material is selected, all product formula materials are subjected to pH value type selection matching, so that the influence of neutralization reaction on component stability and raw material particle agglomeration is avoided, and meanwhile, a hot-melt plastic self-repairing nano material is added into the coating formula; multilayer split-layer coating: during color coating, the front and back coatings of the strip steel are subjected to multilayer coating, and staggered-layer overlapping distribution of solvent volatile holes is realized through nanoscale material particle arrangement and flow distribution of hot-melt plastic self-repairing nano materials in the coating process; accurate control of temperature: according to the invention, after the coating on the front surface and the back surface of the color plate contains the hot-melt plastic self-repairing nano material, the hot-melt self-repairing material is properly hot-melted to seal the damaged part of the paint film when meeting a high-temperature environment in the using process by virtue of the nano particles and the hot-melt self-repairing material in the coating, so that the paint film has continuous protection capability.
Description
Technical Field
The invention relates to the technical field of color-coated plates, in particular to a control method for improving the sealing capacity of a color-coated coating.
Background
Color plates are also called color steel plates and color coated plates in the industry. The color coated steel sheet is a product which is prepared by using a cold-rolled steel sheet, a plated steel sheet, an aluminum-magnesium-manganese sheet and a stainless steel sheet as substrates, performing surface pretreatment (degreasing, cleaning and chemical conversion treatment), continuously coating a coating (roll coating method), and baking and cooling. In the prior art, in the process of producing a paint coating, when a diluent volatilizes outwards in the baking process of a steel plate, pores are formed, so that the sealing capacity of a coating on the steel plate is reduced, corrosive gas or liquid enters the pores in the outdoor use process of the steel plate and reaches the steel plate to corrode the steel plate, and therefore the performance of a color plate is reduced or even destroyed.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a control method for improving the sealing capacity of a color coating, wherein after the coatings on the front surface and the back surface of a color plate contain hot-melt plastic self-repairing nano materials, the nano particles are formed in the coating grinding and manufacturing process by virtue of the nano particles and the hot-melt self-repairing materials in the coatings; the hot-melt self-repairing material is properly hot-melted to seal the damaged part of the paint film when meeting a high-temperature environment in the use process of the color plate, so that the paint film has continuous protection capability, and the service life of the color plate is effectively prolonged under a corrosive environment.
In order to achieve the purpose, the invention provides the following technical scheme: a control method for improving the sealing capability of a color coating comprises the following steps:
s1, plate surface plating: taking a rolled hard steel plate as a substrate, carrying out dip coating on a coating product in a hot-dip galvanizing pot to form a coating on the surface of the strip steel, and controlling the weight of a zinc layer on the surface of the plate by an air knife and air pressure;
s2, texturing: performing roughening treatment on the surface of the strip steel by using a special roughening roller at the finishing section of the strip steel of the coating, and controlling the consistency of the surface condition and the product through a surface roughness index;
s3, color coating pretreatment: the surface of the strip steel is pretreated by using a customized surface degreasing treatment agent and a brushing device, and then the surface of the strip steel enters a phosphating device, and a layer of water-based chromide is coated on the surface of the strip steel, so that the adhesion between the plate surface and the coating is improved;
s4, coating nanoscale treatment and self-repairing material addition: when the coating material is selected, all product formula materials are subjected to pH value type selection matching, the influence of neutralization reaction on component stability and raw material particle agglomeration is avoided, pigment materials are selected for fine grinding and filtering, so that the pigment with the particle size of less than 500 nanometers accounts for 45% of the primer pigment, the pigment with the particle size of 1000 nanometers accounts for 85%, the particle sizes of the product particles are distributed and concentrated in two terms, the quality stability of the product is improved, and meanwhile, the hot-melt plastic self-repairing nano material is added into the coating formula;
s5, multilayer split-layer coating: during color coating, the front and back coatings of the strip steel are subjected to multilayer coating, and staggered-layer overlapping distribution of solvent volatile holes is realized through nanoscale material particle arrangement and flow distribution of hot-melt plastic self-repairing nano materials in the coating process;
s6, accurate temperature control: curing and drying the strip steel by accurately controlling the baking temperature, wherein during the assembly, the front primer and the back primer are coated and then enter a suspended curing furnace for drying at the drying temperature of 215-225 ℃, the strip steel enters a water quenching tank after being discharged from the curing furnace, and then is dried by cold air; and after finishing coating the front surface paint and the back surface paint, drying the paint in a fine-coating curing furnace at the drying temperature of 215-230 ℃, cooling the strip steel discharged from the furnace in a water quenching tank, and then drying, thereby ensuring that the coating realizes chemical catalysis combination curing, and awakening and activating the flow distribution of the hot-melt self-repairing material to close and block the volatile holes of the solvent.
Preferably, the hot-melt plastic self-repairing nano material consists of the following components: 10-15 parts of thermoplastic polymer nano fiber, 6-8 parts of sintered epoxy powder, 4-9 parts of polyrotaxane cyclodextrin, 9-11 parts of bisphenol compounds, 3-5 parts of polyol compounds, 0.5-2.5 parts of catalyst and 1-1.5 parts of curing agent;
preferably, the hot-melt plastic self-repairing nano material consists of the following components: 10 parts of thermoplastic polymer nano fiber, 6 parts of sintered epoxy powder, 4 parts of polyrotaxane cyclodextrin, 9 parts of bisphenol compound, 3 parts of polyol compound, 0.5 part of catalyst and 1 part of curing agent.
Preferably, the hot-melt plastic self-repairing nano material consists of the following components: 15 parts of thermoplastic polymer nano fiber, 8 parts of sintered epoxy powder, 9 parts of polyrotaxane cyclodextrin, 11 parts of bisphenol compound, 5 parts of polyol compound, 2.5 parts of catalyst and 1.5 parts of curing agent.
Preferably, in the texturing processing at step S2: firstly, placing metal compound particles in an electrodeposition base solution, wherein the metal compound particles are made of any one of aluminum oxide, tungsten carbide or zirconium oxide, the diameter of the metal compound particles is 10-38 mu m, a chromium plating solution is selected as the electrodeposition base solution, electrochemical deposition texturing treatment is carried out on the surface of a strip steel substrate under the conditions of stirring and the temperature of 55 ℃ and the current density of 25-35A/dm 2, and then texturing treatment is carried out on the surface of the strip steel by using a special texturing roller.
Preferably, in the step S5 of multilayer split-layer coating, the front and back coatings of the steel strip are coated with not less than two layers.
The invention has the technical effects and advantages that:
1. according to the invention, the hot-melt plastic self-repairing nano material is innovatively added and researched in the coating formula, and is uniformly distributed in the production, construction and use processes of the formula, the self-repairing nano material is awakened and activated in a fixed temperature range to be in a flowing state, and the product stably exists after being automatically plastic after the temperature is reduced, so that the effect of coating sealing is achieved.
2. According to the invention, after the coating on the front surface and the back surface of the color plate contains the hot-melt plastic self-repairing nano material, the nano particles and the hot-melt self-repairing material in the coating can be used, and the nano particles are formed in the coating grinding manufacturing process; the hot-melt self-repairing material is properly hot-melted to seal the damaged part of the paint film when meeting a high-temperature environment in the use process of the color plate, so that the paint film has continuous protection capability, and the service life of the color plate is effectively prolonged under a corrosive environment.
2. The invention improves the adhesive force of the coating and the base material by carrying out special texturing treatment, surface cleaning and passivation treatment when the color-coated substrate is treated, adds hot-melt plastic self-repairing nano material in the coating material, and simultaneously carries out multilayer staggered coating and baking solidification under the accurate temperature control by utilizing a three-roller reverse coating process, so that the finished product on the surface of the color plate forms a full-continuous closed coating.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A control method for improving the sealing capability of a color coating comprises the following steps:
s1, plating a plate surface: taking a rolled hard steel plate as a substrate, carrying out dip coating on a coating product in a hot-dip galvanizing pot to form a coating on the surface of the strip steel, and simultaneously controlling the weight of a zinc layer on the surface of the strip steel through an air knife and air pressure;
s2, texturing: the preliminary texturing treatment comprises the steps of firstly placing metal compound particles with the diameter of 10-38 mu m into an electrodeposition base liquid, selecting a chromium plating solution as the electrodeposition base liquid, and performing preliminary texturing treatment at the temperature of 55 ℃ and the current density of 25-35A/dm 2 Carrying out electrochemical deposition texturing treatment and deep texturing treatment on the surface of a strip steel substrate under the condition of stirring, carrying out texturing treatment on the surface of the strip steel by using a special texturing roller at the finishing section of the coating strip steel, and precisely controlling the consistency of the surface condition and the product according to the surface roughness index, wherein RPC (remote procedure control) is 75-90, and Ra (remote procedure control) is 0.8-1.0 um;
s3, color coating pretreatment: the surface of the strip steel is pretreated by using a customized surface degreasing treatment agent with the pH value of 8-9 and a brushing device, and then the surface of the strip steel enters a phosphating device, and a layer of water-based chromide is coated on the surface of the strip steel, so that the adhesion between the plate surface and the coating is improved;
s4, preparing the hot-melt plastic self-repairing nano material: weighing 10 parts of thermoplastic polymer nano fiber, 6 parts of sintered epoxy powder, 4 parts of polyrotaxane cyclodextrin, 9 parts of bisphenol compound, 3 parts of polyol compound, 0.5 part of catalyst and 1 part of curing agent according to a proportion; then uniformly stirring the thermoplastic polymer nano-fiber, the sintered epoxy powder and the polyrotaxane cyclodextrin for later use, then pouring the bisphenol compound and the polyol compound, continuously stirring and mixing, and finally pouring a certain amount of catalyst and curing agent, heating and uniformly mixing to form a fluid-like substance;
s5, adding a coating nanoscale treatment and self-repairing material: when the coating material is selected, all product formula materials are subjected to PH value type selection matching, the influence of neutralization reaction on component stability and raw material particle agglomeration is avoided, after the pigment material is selected for fine grinding and filtering, the pigment with the particle size of less than 500 nanometers accounts for 45% and the pigment with the particle size of 1000 nanometers accounts for 85% in the primer pigment, the particle sizes of the product particles are distributed and concentrated in two terms, the quality stability of the product is improved, meanwhile, the hot-melt plastic self-repairing nano material is added into the coating formula, the product is uniformly distributed in the formula production and construction use processes, the self-repairing nano material is awakened and activated within a fixed temperature range of 170 ℃ to be in a flowing state, and the product is stable after automatic plasticity after the temperature is reduced.
S6, multilayer split-layer coating: in color coating, the requirements of actual use environments are combined, the front and back coatings of the strip steel are controlled by 2-coating or 3-coating coatings, and staggered-layer overlapping distribution of solvent volatilization holes is realized through nano-grade material particle arrangement and flow distribution of hot-melt plastic self-repairing nano materials in the coating process;
s7, accurate temperature control: curing and drying the strip steel by accurately controlling the baking temperature, wherein during the process of assembling, the front primer and the back primer are coated and then enter a hanging type curing furnace for drying at the drying temperature of 215-; and after finishing coating the front surface paint and the back surface paint, drying the paint in a finish coating curing furnace at the drying temperature of 215-230 ℃, cooling the steel strip discharged from the furnace in a water quenching tank, and then drying to control the temperature of the steel strip to be 35-45 ℃, so that the chemical catalysis combination curing of the coating is realized, and the activated hot-melt self-repairing material is awakened to flow and distribute to seal and block the solvent volatilization holes.
Example 2
A control method for improving the sealing capability of a color coating comprises the following steps:
s1, plate surface plating: taking a rolled hard steel plate as a substrate, carrying out dip coating on a coating product in a hot-dip galvanizing pot to form a coating on the surface of the strip steel, and simultaneously controlling the weight of a zinc layer on the surface of the strip steel through an air knife and air pressure;
s2, texturing treatment: performing primary texturing treatment, namely firstly placing metal compound particles with the diameter of 10-38 mu m into an electrodeposition base solution, selecting a chromium plating solution as the electrodeposition base solution, performing electrochemical deposition texturing treatment and deep texturing treatment on the surface of a strip steel substrate under the conditions of 55 ℃ temperature, 25-35A/dm 2 of current density and stirring, performing texturing treatment on the surface of the strip steel by using a special texturing roller in the finishing section of a coated strip steel, wherein the surface roughness index requires that RPC is 80-105, Ra is 0.9-1.2um, the condition of the plate surface is precisely controlled to be consistent with the product, and the condition of the plate surface is controlled to be consistent with the product;
s3, color coating pretreatment: the surface of the strip steel is pretreated by using a customized surface degreasing treatment agent with the pH value of 9-11 and a brushing device, and then the surface of the strip steel enters a phosphating device, and a layer of water-based chromide is coated on the surface of the strip steel, so that the adhesion between the plate surface and the coating is improved;
s4, preparing the hot-melt plastic self-repairing nano material: weighing 13 parts of thermoplastic polymer nano fiber, 7 parts of sintered epoxy powder, 7 parts of polyrotaxane cyclodextrin, 10 parts of bisphenol compound, 4 parts of polyol compound, 1.5 parts of catalyst and 1.3 parts of curing agent according to the proportion; then uniformly stirring the thermoplastic polymer nanofiber, the sintered epoxy powder and the polyrotaxane cyclodextrin for later use, then pouring the bisphenol compound and the polyol compound, continuously stirring and mixing, and finally pouring a certain amount of catalyst and curing agent, heating and uniformly mixing to form a fluid-like substance;
s5, coating nanoscale treatment and self-repairing material addition: when the coating material is selected, all product formula materials are subjected to PH value type selection matching, the influence of neutralization reaction on component stability and raw material particle agglomeration is avoided, after the pigment material is selected for fine grinding and filtration, the pigment with the particle size of less than 500 nanometers accounts for 45% and the pigment with the particle size of 1000 nanometers accounts for 85% in the primer pigment, the particle sizes of the product particles are distributed and concentrated in two terms, the quality stability of the product is improved, meanwhile, the hot-melt plastic self-repairing nano material is added into the coating formula, the product is uniformly distributed in the production, construction and use processes of the formula, the self-repairing nano material is awakened and activated within a fixed temperature range of 170 ℃ to be in a flowing state, and the product is stable after automatic plasticity after the temperature is reduced;
s6, multilayer split-layer coating: in color coating, the requirements of actual use environments are combined, the front and back coatings of the strip steel are controlled by 2-coat or 3-coat coatings, and staggered-layer stacking distribution of solvent volatilization holes is realized through nanoscale material particle arrangement and flow distribution of hot-melt plastic self-repairing nano materials in the coating process;
s7, accurate temperature control: curing and drying the strip steel by accurately controlling the baking temperature, wherein during the process of assembling, the front primer and the back primer are coated and then enter a hanging type curing furnace for drying at the drying temperature of 215-; and after finishing coating the front surface paint and the back surface paint, drying the paint in a finish coating curing furnace at the drying temperature of 220-243 ℃, cooling the steel strip discharged from the furnace in a water quenching tank, and then drying to control the temperature of the steel strip to be 40-50 ℃, so that the coating is ensured to realize chemical catalysis combination curing, and the activated hot-melt self-repairing material is awakened to flow and distribute to seal and block the solvent volatilization holes.
Example 3
A control method for improving the sealing capability of a color coating comprises the following steps:
s1, plate surface plating: taking a rolled hard steel plate as a substrate, carrying out dip coating on a coating product in a hot-dip galvanizing pot to form a coating on the surface of the strip steel, and simultaneously controlling the weight of a zinc layer on the surface of the strip steel through an air knife and air pressure;
s2, texturing: performing primary texturing treatment, namely firstly placing metal compound particles with the diameter of 10-38 mu m into an electrodeposition base solution, selecting a chromium plating solution as the electrodeposition base solution, performing electrochemical deposition texturing treatment and deep texturing treatment on the surface of a strip steel substrate under the conditions of 55 ℃ temperature, 25-35A/dm 2 of current density and stirring, performing texturing treatment on the surface of the strip steel by using a special texturing roller in the finishing section of a coated strip steel, and controlling the consistency of the surface condition and the product by using a surface roughness index, wherein the RPC is 90-130 and the Ra is 1.1-1.3 um;
s3, color coating pretreatment: the surface of the strip steel is pretreated by using a customized surface degreasing treatment agent with the pH value of 10-12 and a brushing device, and then the strip steel enters a phosphating device, and a layer of water-based chromide is coated on the surface of the strip steel, so that the adhesion between the plate surface and the coating is improved;
s4, preparing the hot-melt plastic self-repairing nano material: weighing 15 parts of thermoplastic polymer nano fiber, 8 parts of sintered epoxy powder, 9 parts of polyrotaxane cyclodextrin, 11 parts of bisphenol compound, 5 parts of polyol compound, 2.5 parts of catalyst and 1.5 parts of curing agent according to a proportion; then uniformly stirring the thermoplastic polymer nano-fiber, the sintered epoxy powder and the polyrotaxane cyclodextrin for later use, then pouring the bisphenol compound and the polyol compound, continuously stirring and mixing, and finally pouring a certain amount of catalyst and curing agent, heating and uniformly mixing to form a fluid-like substance;
s5, coating nanoscale treatment and self-repairing material addition: when the coating material is selected, all product formula materials are subjected to PH value type selection matching, the influence of neutralization reaction on component stability and raw material particle agglomeration is avoided, after the pigment material is selected for fine grinding and filtering, the pigment with the particle size of less than 500 nanometers accounts for 45% and the pigment with the particle size of 1000 nanometers accounts for 85% in the primer pigment, the particle sizes of the product particles are distributed and concentrated in two terms, the quality stability of the product is improved, meanwhile, the hot-melt plastic self-repairing nano material is added into the coating formula, the product is uniformly distributed in the formula production and construction use processes, the self-repairing nano material is awakened and activated within a fixed temperature range of 180 ℃ and 217 ℃ to be in a flowing state, and the product is stable after automatic plasticity after the temperature is reduced.
S6, multilayer split-layer coating: in color coating, the requirements of actual use environments are combined, the front and back coatings of the strip steel are controlled by 2-coating or 3-coating coatings, and staggered-layer overlapping distribution of solvent volatilization holes is realized through nano-grade material particle arrangement and flow distribution of hot-melt plastic self-repairing nano materials in the coating process;
s7, accurate temperature control: curing and drying the strip steel by accurately controlling the baking temperature, wherein during the process of assembling, the front primer and the back primer are coated and then enter a hanging type curing furnace for drying at the drying temperature of 208-; and after finishing coating the front surface paint and the back surface paint, drying the paint in a fine coating curing furnace at the drying temperature of 226-239 ℃, cooling the steel strip discharged from the furnace in a water quenching tank, and then drying to control the temperature of the steel strip to be 40-51 ℃, so that the coating is ensured to realize chemical catalysis combination curing, and the activated hot-melt self-repairing material is awakened to flow and distribute to seal and block the solvent volatilization holes.
The coatings prepared in examples 1-3 were tested and the following data were obtained:
therefore, after the coating on the front surface and the back surface of the color plate contains the hot-melt plastic self-repairing nano material, the hot-melt plastic self-repairing nano material is properly hot-melted to seal the damaged part of the paint film when the color plate is in a high-temperature environment in the using process, so that the paint film has continuous protection capability, the service life of the color plate is effectively prolonged in a corrosive environment, meanwhile, special texturing treatment, surface cleaning and passivation treatment are carried out to improve the adhesive force between the coating and a base material when the color-coated substrate is treated, the hot-melt plastic self-repairing nano material is added into the coating material, and meanwhile, a three-roller reverse coating process is utilized to carry out multilayer staggered coating and baking and curing under accurate temperature control, so that a full-continuous sealing coating is formed on the finished product on the surface of the color plate.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. A control method for improving the sealing capability of a color coating is characterized by comprising the following steps: the method comprises the following steps:
s1, plating a plate surface: taking a rolled hard steel plate as a substrate, carrying out dip coating on a coating product in a hot-dip galvanizing pot to form a coating on the surface of the strip steel, and simultaneously controlling the weight of a zinc layer on the surface of the strip steel through an air knife and air pressure;
s2, texturing: performing texturing treatment on the surface of the strip steel by using a special texturing roller at the finishing section of the strip steel of the coating, and controlling the consistency of the surface condition and the product through a surface roughness index;
s3, color coating pretreatment: the surface of the strip steel is pretreated by using a customized surface degreasing treatment agent and a brushing device, and then the surface of the strip steel enters a phosphating device, and a layer of water-based chromide is coated on the surface of the strip steel, so that the adhesion between the plate surface and the coating is improved;
s4, coating nanoscale treatment and self-repairing material addition: when the coating material is selected, all product formula materials are subjected to pH value type selection matching, the influence of neutralization reaction on component stability and raw material particle agglomeration is avoided, pigment materials are selected for fine grinding and filtering, so that the pigment with the particle size of less than 500 nanometers accounts for 45% of the primer pigment, the pigment with the particle size of 1000 nanometers accounts for 85%, the particle sizes of the product particles are distributed and concentrated in two terms, the quality stability of the product is improved, and meanwhile, the hot-melt plastic self-repairing nano material is added into the coating formula;
s5, multilayer split-layer coating: during color coating, the front and back coatings of the strip steel are subjected to multilayer coating, and staggered-layer overlapping distribution of solvent volatilization holes is realized through nanoscale material particle arrangement and flow distribution of hot-melt plastic self-repairing nano materials in the coating process;
s6, accurate temperature control: curing and drying the strip steel by accurately controlling the baking temperature, wherein during the process of assembling, the front primer and the back primer are coated and then enter a suspension type curing furnace for drying at the drying temperature of 215-; and after finishing coating the front surface paint and the back surface paint, drying the paint in a finish coating curing furnace at the drying temperature of 215-230 ℃, cooling the strip steel discharged from the furnace in a water quenching tank, and then drying.
2. The control method for improving the sealing capability of a color coating according to claim 1, wherein: the hot-melt plastic self-repairing nano material comprises the following components: 10-15 parts of thermoplastic polymer nano fiber, 6-8 parts of sintered epoxy powder, 4-9 parts of poly-rotaxane cyclodextrin, 9-11 parts of bisphenol compound, 3-5 parts of polyol compound, 0.5-2.5 parts of catalyst and 1-1.5 parts of curing agent;
3. the control method for improving the sealing capability of a color coating according to claim 2, wherein: the hot-melt plastic self-repairing nano material comprises the following components: 10 parts of thermoplastic polymer nano fiber, 6 parts of sintered epoxy powder, 4 parts of polyrotaxane cyclodextrin, 9 parts of bisphenol compound, 3 parts of polyol compound, 0.5 part of catalyst and 1 part of curing agent.
4. The control method for improving the sealing capability of a color coating according to claim 2, wherein: the hot-melt plastic self-repairing nano material comprises the following components: 15 parts of thermoplastic polymer nano fiber, 8 parts of sintered epoxy powder, 9 parts of polyrotaxane cyclodextrin, 11 parts of bisphenol compound, 5 parts of polyol compound, 2.5 parts of catalyst and 1.5 parts of curing agent.
5. The control method for improving the sealing capability of a color coating according to claim 1, wherein: in step S2, texturing: firstly, placing metal compound particles in an electrodeposition base solution, wherein the metal compound particles are any one of aluminum oxide, tungsten carbide or zirconium oxide, the diameter of the metal compound particles is 10-38 mu m, a chromium plating solution is selected as the electrodeposition base solution, and the temperature is 55 ℃, and the current density is 25-35A/dm 2 Performing electrochemical deposition texturing treatment on the surface of the steel substrate under the stirring condition, and then performing electrochemical deposition texturing treatment on the steel substrateThe surface of the strip steel is roughened by a special roughening roller.
6. The control method for improving the sealing capability of a color coating according to claim 1, wherein: in step S5, in the multilayer staggered coating, at least two layers of coating are performed on both the front and back coatings of the strip steel.
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