EP1325089A2 - Procede de pretraitement et d'enduction de surfaces metalliques, avant leur fa onnage, au moyen d'un revetement ressemblant a de la peinture, et utilisation de substrats ainsi enduits - Google Patents
Procede de pretraitement et d'enduction de surfaces metalliques, avant leur fa onnage, au moyen d'un revetement ressemblant a de la peinture, et utilisation de substrats ainsi enduitsInfo
- Publication number
- EP1325089A2 EP1325089A2 EP01985240A EP01985240A EP1325089A2 EP 1325089 A2 EP1325089 A2 EP 1325089A2 EP 01985240 A EP01985240 A EP 01985240A EP 01985240 A EP01985240 A EP 01985240A EP 1325089 A2 EP1325089 A2 EP 1325089A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lacquer
- layers
- coating
- polymer
- corrosion protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- B05D7/16—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 using synthetic lacquers or varnishes
-
- 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
-
- 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
- C23C22/05—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 using aqueous solutions
- C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
-
- 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
- B05D2701/00—Coatings being able to withstand changes in the shape of the substrate or to withstand welding
-
- 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
- B05D3/06—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 exposure to radiation
- B05D3/061—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 exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
-
- 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
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Definitions
- the object is achieved with a method for coating a metallic strip for the automotive, aerospace or space industry, the strip or possibly the strip sections produced therefrom in the following process first with at least one corrosion protection layer and then with at least one layer of a paint-like polymer -containing layer is / are coated, the strip being divided into strip sections after coating with at least one corrosion protection layer or after coating with at least one layer of a varnish-like coating, the coated strip sections then being reshaped, joined and / or with at least one (Another) varnish-like layer or / and varnish layer are coated, the varnish-like coating by coating the surface with an aqueous dispersion which, in addition to water, contains at least one UV-crosslinkable water-soluble and / or water-dispersible resin, at least one wax standard additive, contains at least one photoinitiator and at least one corrosion inhibitor, the coating being dried and cured after formation on the metallic surface, a coating being formed which has a cured layer thickness of up to 10 ⁇ m and which follows one in a mandre
- the object is also achieved with a method for coating a metallic strip for the automotive, aerospace or aerospace industry, the strip being first coated with at least one layer of a lacquer-like polymer-containing layer without a corrosion protection layer being applied beforehand, the Tape after coating with at least one layer of a varnish-like coating to tape is cut into sections, the coated strip sections then being reshaped, joined and / or coated with at least one (further) layer of a lacquer or a lacquer-like layer, the lacquer-like coating being formed by coating the surface with an aqueous dispersion which, in addition to water, is at least contains a UV-crosslinkable water-soluble and / or water-dispersible resin, at least one wax as forming additive, at least one photoinitiator and at least one corrosion inhibitor, the coating being dried and cured after formation on the metallic surface, a coating being formed which cures a Has a layer thickness of up to 10 ⁇ m and that on a mandrel test according to DIN ISO 6860
- At least one water-miscible and / or water-soluble alcohol, a glycol ether, N-methylpyrrolidone and / or water can be used as the organic solvent for the organic polymers.
- a solvent mixture a mixture of at least one long-chain alcohol, such as, for example, propylene glycol, an ester alcohol, a glycol ether and / or butanediol with water, is recommended, otherwise the use of water alone, in particular deionized water, is recommended.
- the organic solvent content can be 0.1 to 5% by weight, preferably 0.2 to 2% by weight.
- the metallic surface can essentially consist of aluminum, iron, copper, magnesium, nickel, titanium, zinc or / and of an alloy containing aluminum, iron, copper, magnesium, nickel, titanium or / and zinc or of several of these metallic substances consist.
- the metallic surface can be cleaned or / and galvanized, in particular freshly cleaned or freshly galvanized, wherein the galvanizing can consist of zinc or of a zinc-containing alloy such as an aluminum and / or iron-containing zinc alloy. It is preferably hot-dip galvanized or electrolytically galvanized or coated with an aluminum-zinc alloy such as for the production of Galfan ® or Galvalume ® .
- this process can be used in such a way that it cannot be used on a separate coil coating system must, but can be applied following, for example, galvanizing on the same system (galvanizing line). This is often even possible without a loss of system capacity.
- the liquid, solution or suspension for at least one of the corrosion protection layers, lacquer layers and / or lacquer-like polymer-containing layers can contain at least one partially hydrolyzed silane, at least one completely hydrolyzed silane and / or at least one siloxane.
- siloxanes form from the silanes.
- appropriate siloxanes can also be added.
- the silanes / siloxanes can either be used alone, in a mixture e.g. with at least one fluoride complex or together with polymers.
- the liquid, solution or suspension for at least one of the corrosion protection layers, lacquer layers and / or lacquer-like polymer-containing layers can contain an organic solvent content in the range from 0.1 to 10% by weight.
- the liquid, solution or suspension for at least one of the corrosion protection layers can contain at least one compound of the type XYZ, where X is a COOH, HSO 3 , HSO 4 , (OH) 2 PO, (OH) 2 PO 2 , (OH) (OR ') PO or (OH) (OR') PO 2 group,
- the liquid, solution or suspension for at least one of the corrosion protection layers can contain at least one of the following compounds of the type XYZ, ⁇ * ⁇ * Z * or / and X * Y * Z * Y * X *: 1 -phosphonic acid-12-mercaptododecane,
- the second hardening preferably takes place thermally, in particular if the sheet is also to be post-hardened.
- the second curing is preferably carried out by actinic radiation, in particular by UV radiation, because the curing often takes place better than by thermal crosslinking alone.
- more than one type of hardening can be used in each of the hardening steps.
- At least one coating of lacquer, a mixture of or with Polymers, paint, adhesive and / or adhesive carrier are applied.
- Electrolytic cleaning with a strong alkaline cleaner to completely remove organic contaminants such as e.g. Clean grease and oil and other dirt.
- the total time for cleaning and pretreatment can be reduced from 20 to 40 minutes to 15 to 30 seconds.
- the layer weight of the pretreatment coating can possibly be reduced from 1.5 to 4 g / m 2 to approximately 0.01 to 2 g / m 2 .
- the chemical consumption during the pretreatment can be reduced from 20 to 40 g / m 2 to 1 to 10 g / m 2 .
- the dry test sheets were provided with a cathodic dip coating and coated with the other layers of a coating structure customary for automobiles (layer structure and coatings corresponding to Daimler Chrysler in moon silver).
- Hot-dip galvanized steel sheets (HDG) with a zinc content of over 95% in the galvanizing sheet were cleaned, degreased and subjected to a surface treatment with the composition described below in the same way as the steel sheets in the examples described above:
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
L'invention concerne un procédé pour enduire une bande métallique dans l'industrie automobile, aéronautique ou spatiale. La bande ou les sections de bande fabriquées selon ledit procédé sont d'abord enduites d'au moins une couche de protection anti-corrosion, puis d'au moins une couche polymère ressemblant à de la peinture. Après l'application de la couche de protection ou après l'application de la couche polymère, la bande métallique est découpée en sections. Ces sections de bande ainsi enduites sont alors façonnées, assemblées et/ou recouvertes d'au moins une (autre) couche ressemblant à de la peinture et/ou d'une couche de peinture. L'enduction avec un produit ressemblant à de la peinture est réalisée avec une dispersion aqueuse contenant, outre de l'eau, au moins une résine réticulant aux UV, hydrosoluble et/ou se dispersant dans l'eau, au moins une cire en tant qu'additif de transformation, au moins un photo-initiateur et au moins un inhibiteur de corrosion. Après avoir été enduit sur la surface métallique, le revêtement est séché et durci. On obtient ainsi une enduction qui, une fois durcie, a jusqu'à 10 mu m d'épaisseur et qui, sur une surface test, à un essai de pliage à la broche conformément à la norme DIN ISO 6860 sans déchirure de la surface de test avec une broche de 3,2 mm à 38 mm de diamètre, ne présente pas de phénomène de corrosion > 5 %, lors d'un test en atmosphère d'essai avec eau de condensation selon DIN 50017 KFW durant 240 h, test effectué immédiatement après l'essai de pliage. L'invention concerne également un procédé d'enduction correspondant, selon lequel la bande métallique est d'abord revêtue d'au moins une couche polymère ressemblant à de la peinture, sans application préalable d'une couche de protection anti-corrosion sous-jacente.
Applications Claiming Priority (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10047686 | 2000-09-25 | ||
DE10047686 | 2000-09-25 | ||
DE10050532 | 2000-10-11 | ||
DE10050532 | 2000-10-11 | ||
DE10110830 | 2001-03-06 | ||
DE10110830 | 2001-03-06 | ||
DE10119606 | 2001-04-21 | ||
DE10119606 | 2001-04-21 | ||
DE10146446 | 2001-09-20 | ||
DE10146446A DE10146446B4 (de) | 2000-09-25 | 2001-09-20 | Verfahren zur Beschichtung von metallischen Oberflächen und Verwendung der derart beschichteten Substrate und der derart hergestellten Beschichtungen |
PCT/EP2001/011083 WO2002024344A2 (fr) | 2000-09-25 | 2001-09-25 | Procede de pretraitement et d'enduction de surfaces metalliques, avant leur façonnage, au moyen d'un revetement ressemblant a de la peinture, et utilisation de substrats ainsi enduits |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1325089A2 true EP1325089A2 (fr) | 2003-07-09 |
Family
ID=27512390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01985240A Withdrawn EP1325089A2 (fr) | 2000-09-25 | 2001-09-25 | Procede de pretraitement et d'enduction de surfaces metalliques, avant leur fa onnage, au moyen d'un revetement ressemblant a de la peinture, et utilisation de substrats ainsi enduits |
Country Status (5)
Country | Link |
---|---|
US (2) | US20030185990A1 (fr) |
EP (1) | EP1325089A2 (fr) |
AU (1) | AU2002220566B8 (fr) |
CA (1) | CA2423137A1 (fr) |
WO (1) | WO2002024344A2 (fr) |
Families Citing this family (96)
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- 2001-09-25 AU AU2002220566A patent/AU2002220566B8/en not_active Ceased
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US20030185990A1 (en) | 2003-10-02 |
WO2002024344A3 (fr) | 2002-11-28 |
AU2056602A (en) | 2002-04-02 |
AU2002220566B2 (en) | 2007-03-08 |
WO2002024344A2 (fr) | 2002-03-28 |
AU2002220566B8 (en) | 2007-09-13 |
CA2423137A1 (fr) | 2003-03-21 |
US20060093755A1 (en) | 2006-05-04 |
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